Answer:
22.75 hours per week
Step-by-step explanation:
We can see from the question that the target amount of money is $190.00 per week.
If Lauren Rodriguez earns $8.35 in one hour
then $190.00 will be earned in x hours
8.35x = 190.00
x = 190.00/8.35
x = 22.75 hours per week
below. a) Which of the boxes has the smaller range of masses? b) What is the value of this range? Give your answer in grams (g). Box A 97653 4 Box A Box B 15 1469 5 6 2 478 39 835 8762 7 Box B Key 35 represents a mass of 53 g 51 represents a mass of 51 g
Box B has the smaller range of masses, with a range of 49 grams, compared to Box A's range of 97,649 grams.
The question asks which of the boxes has the smaller range of masses and what is the value of this range in grams (g).
To find the range, we need to subtract the smallest value from the largest value in each box.
In Box A, the smallest value is 4 and the largest value is 97653. So, the range in Box A is 97653 - 4 = 97649 g.
In Box B, the smallest value is 2 and the largest value is 8762. However, we are given that key 35 represents a mass of 53 g and key 51 represents a mass of 51 g. So, the actual largest value in Box B is 51. Therefore, the range in Box B is 51 - 2 = 49 g.
Comparing the ranges, we can see that the range in Box B (49 g) is smaller than the range in Box A (97649 g).
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trace metals in drinking water can affect the flavor, and pose a health hazard, if found in unusually high concentrations. ten pairs of measurements were taken around the city of the zinc concentration in water. each pair consisted of a measurement from the bottom of the water column as well as one from the surface. at the 5% level of significance, does the data suggest that the average zinc concentration in the bottom of the water column exceeds that in surface water?
At the 5% level of significance, the data suggests that the average zinc concentration in the bottom of the water column exceeds that in surface water.
To determine if the average zinc concentration in the bottom of the water column exceeds that in surface water, you can perform a paired t-test. The null hypothesis (H0) would be that the average zinc concentration in the bottom of the water column is equal to or less than that in surface water.
To perform the test, you would calculate the difference between each paired measurement (bottom - surface) and then calculate the mean and standard deviation of these differences. Using these values, you can calculate the t-statistic and compare it to the critical value from the t-distribution table at the 5% level of significance.
If the calculated t-statistic is greater than the critical value, you would reject the null hypothesis and conclude that the average zinc concentration in the bottom of the water column exceeds that in surface water at the 5% level of significance.
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Solve the equation for the variable.
\( - 5v + 9 = - v + 17\)
v = [?]
Answer:
v= - 2
Step-by-step explanation:
...............
c. Will bought a tennis racket on sale for $24.60. If the sale was 20% off,
how much was the tennis racket originally?
Answer:
$30.75
Step-by-step explanation:
Since the sale was 20% off, the tennis racket is 80% of its original price.
\(.8p = 24.60\)
\(p = 30.75\)
Summet uses 0.4 gallon of gasoline each hour
Answer:
1.68 gallons.
Step-by-step explanation:
So, without mincing words let's dive straight into the solution to the problem above. We are given from the question that the person that is Summet make use of gasoline to mow lawns and the amount of gasoline that Summet uses per hour = 0.4 gallon.
If Summet uses 0.4 gallon of kerosene in 1 hour. Then, Summet will use x gallons of gasoline in 4.2 hours, that is:
0.4 -----------------------> 1 hour.
x ---------------------------> 4.2 hours. Then,
x = 4.2 × 0.4 = 1.68 gallons of gasoline.
Hence, Summet uses 1.68 gallons of gasoline in 4.2 hours.
Write the equation of the line, given the y and x-intercepts.
y-intercept = –2, x-intercept = –3
(need help asap so please hurry thank you!!)
Answer:
y = -(2/3)m - 2
Step-by-step explanation:
recall that the general equation of a straight line in slope-intercept form is
y = mx + b
where, m is the slope and b is the y - intercept
here we are given that the y - intercept is -2, hence the equation becomes:
y = mx + (-2)
or
y = mx -2
we are also given that the x-intercept is -3, which means that when y = 0, x = -3 (simply substitute this into our new equation to solve for m)
0 = m(-3) -2
0 = -3m - 2 (add 3m to both sides)
3m = -2 (divide both sides by 3)
m = -(2/3)
hence our equation is now
y = -(2/3)m - 2
The purchase value of an office computer is $12,350. Its annual depreciation is $1,930.The value of the computer after 9 years is $
The purchase value of an office compute
Value= 12350
Anuall depreciation = 1930
Value of computer in 9 years t=9
then we can create the formula
\(V(t)=12350-1930t\)then
after 9 years the value of the computer is
\(V(9)=12350-1930(9)\)\(V(9)=12350-17370\)\(V(9)=-5020\)since we have a negative value, the minimum value of the computer is 0
then 3
the value after 9 years of the computer is
$0
New question
V=12780
Depreciation=1947
time = 6 years
\(V(t)=12780-1947t\)\(V(6)=12780-1947(6)\)\(V(6)=12780-11682\)\(V(6)=1098\)in 6 years The value of the computer is 1098
For each of the following elliptic curves E and finite fields Fp, make a list of the set of points E(F (a) E :Y^2 = X^3 + 3X + 2 over F7. (b) E: Y^2 = X^3 + 2X + 7 over F11
a. The set of points on E(F7) is:
{(0, 1), (0, 6), (1, 0), (1, 6), (2, 0), (2, 1), (3, 2), (3, 5), (4, 3), (4, 4), (5, 2), (5, 5), (6, 0), (6, 1)}
b. The set of points on E(F11) is:
{(0, 4), (0, 7), (1, 5), (1, 6), (2, 0), (3, 2), (3, 9), (4, 2), (4, 9), (5, 3), (5, 8), (6, 2), (6, 9), (7, 0), (8, 1), (8, 10), (9, 4), (9, 7), (10, 6)}.
a)\(E: Y^2 = X^3 + 3X + 2 over F7:\)
To find the set of points on this elliptic curve over F7, we can substitute each value of x from 0 to 6 into the equation and check whether there exists a corresponding y that satisfies the equation.
The set of points on E(F7) is:
{(0, 1), (0, 6), (1, 0), (1, 6), (2, 0), (2, 1), (3, 2), (3, 5), (4, 3), (4, 4), (5, 2), (5, 5), (6, 0), (6, 1)}
(b)\(E: Y^2 = X^3 + 2X + 7 over F11:\)
To find the set of points on this elliptic curve over F11, we can similarly substitute each value of x from 0 to 10 into the equation and check whether there exists a corresponding y that satisfies the equation.
The set of points on E(F11) is:
{(0, 4), (0, 7), (1, 5), (1, 6), (2, 0), (3, 2), (3, 9), (4, 2), (4, 9), (5, 3), (5, 8), (6, 2), (6, 9), (7, 0), (8, 1), (8, 10), (9, 4), (9, 7), (10, 6)}.
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What are binary integer variables?
a. Variables with any two values, a and b.
b. Variables with values 0 and 1.
c. Variables whose sum of digits is 2.
d. Variables with values between 0 and 1.
Binary integer variables are variables whose values consist of two values, 0 and 1.
Correct answer will be :- b. Variables with values 0 and 1.
These values are also known as bits, which are represented as 0 and 1 in computers. Binary integer variables are used in computing as a way to represent numbers, characters, and instructions. Binary integer variables are used to represent information in digital systems, because they can be used to represent any value with a single bit.
For example, a single bit can represent a number, letter, or instruction. Binary integer variables are also used in computer programming, as they can be used to represent boolean values, such as true and false. Additionally, they can be used to represent various types of data, such as numbers, characters, and images.
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please help!!
In a survey, 90% of dentists recommended sugarless gum for their patients who chew gum. If the total number of dentists surveyed was 80, how many dentists recommended chewing sugarless gum?
(Hint: What is 90% of 80?)
Answer:
72
Step-by-step explanation:
80x.90= 72
Answer:
72 is your answer
Step-by-step explanation:
DUE FRIDAY NEED HELP NOW!!!
Let P, Q, R, and S be the midpoints of sides AB, BC, CD, and DA, respectively. Use a ruler to locate these points as precisely as you can, and join them to form a new quadrilateral PQRS. What do you notice about the quadrilateral PQRS?
ABCD is a rectangle, and P, Q, R, and S are mid points of the sides AB, BC, CD, and DA, respectively. show that the quadrilateral PQRS is a rhombus
Can someone help me please
Answer:
4 to the power of 13
Step-by-step explanation:
In the country of United States of Heightlandia, the height measurements of ten-year-old children areapproximately normally distributed with a mean of 54.8 inches, and standard deviation of 4.9 inches.What is the probability that the height of a randomly chosen child is between 51.05 and 54.75 inches? Do notround until you get your your final answer, and then round to 3 decimal places.
m = 54.8 inches
std = 4.9 inches
We can standarize the variable as:
(X - m)/std
So, the probability of a height randomly choosen is between 51.05 and 54.75 inches is:
P[ 51.05 < X < 54.75]
Standarizing those values:
(51.05 - m)/std = (51.05 - 54.8)/4.9 = -75/98...
(54.75 - m)/std = (51.05 - 54.8)/4.9 = -1/98...
So, the new probability is:
P[ -75/98 < Z < -1/98] = Phi(-1/98) - Phi(-75/98)
Where Z is the new standarized variable.
We can find these Phi values from tables of the standarized normal distributions:
Phi(-1/98) = 0.77796
Phi(-75/98) = 0.49593
So the probability is:
P[ -75/98 < Z < -1/98] = Phi(-1/98) - Phi(-75/98) = 0.77796 - 0.49593
P[ 51.05 < X < 54.75] = 0.28203 = 0.282
And that is the answer
A fifth grade class is rising money to buy a microscope for their classroom. They grew tomato plants to sell for 2.75 each.
Part A On one day, they raised 79.75 from selling tomato plants. How many plants did they sell?
Part B The next day, they sold the last 4 plants they had grown. How much money in dollars did they raise in all?
Answer:
Part A -- 29 plants
Part B -- 90.75$
Step-by-step explanation:
79.75 / 2.75 = 29
4 x 2.75 = 11
79.75 + 11 = 90.75
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
what is y/x 2 to the second power
The value of the expression y/x 2 to the second power is y^2/x^4
What are expressions?Expressions are mathematical statements that are represented by variables, coefficients and operators
How to evaluate the expression?The expression is given as
y/x 2 to the second power
Rewrite the above expression properly as:
y/x^2 to the second power
The second power means ^2
So, we have
(y/x^2)^2
Evaluate
y^2/x^4
Hence, the value of the expression y/x 2 to the second power is y^2/x^4
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plzz helpp mee in this question!!!
Answer:
Please see attached picture for full solution.
Please fill in all of the blanks
Answer:
The perimeter of this trapezoid is
7 + 5 + 3 + 7 + 4 = 26 cm
rectangle, A = lw, 4 × 7 = 28 square cm
triangle, A = (1/2)bh, (1/2) × 3 × 4 =
6 square cm
(1/2)(4)(7 + 10) = (1/2)(4)(17) = 34 square cm = 28 square cm + 6 square cm
Between which interval is the charge a fixed rate?
Answer:
m
Step-by-step explanation:
grbdytjtyhdyt 2nd option 4-8
Un puente colgante tiene un cable en forma de parábola. El puente se apoya en dos torres. Hay 136 metros de distancia entre las torres. Si el cable está a 17 metros de altura cuando está a 34metros de distancia del centro del puente, ¿cuál es la altura de una de las torres?
If y varies directly with x and y=-16 when x=8, find y when x=2
Answer:
y=-4
Step-by-step explanation:
The answer is going to be -4 as when y=-16 x=8.
The distance of planet Mercury from the Sun is approximately 5.8. 10 kilometers, and the distance of Earth from the Sun is 1.5. 108 kilometers. About how many more kilometers is the distance of Earth from the Sun than the distance of Mercury from the Sun?
We have that the distance of planet Mercury from the Sun is approximately:
\(d_{MS}=5.8\cdot10\operatorname{km}\)and the distance of Earth from the Sun is:
\(d_{ES}=1.5\cdot10^8\)b. in general, when dealing with inferences for two population proportions, which two of the following are equivalent: confidence interval method; p-value method; critical value method?
The confidence interval and critical value methods are equivalent in providing an interval estimate, the p-value method is used for hypothesis testing and evaluates the strength of evidence against the null hypothesis.
What is the confidence interval?
A confidence interval is a range of values that is likely to contain the true value of an unknown population parameter, such as the population mean or population proportion. It is based on a sample from the population and the level of confidence chosen by the researcher.
In general, when dealing with inferences for two population proportions, the confidence interval method and the critical value method are equivalent. These two methods provide a range of plausible values (confidence interval) for the difference between two population proportions and involve the calculation of critical values to determine the margin of error.
On the other hand, the p-value method is not equivalent to the confidence interval and critical value methods. The p-value method involves calculating the probability of observing a test statistic as extreme as, or more extreme than, the one obtained from the sample data, assuming the null hypothesis is true. It is used in hypothesis testing to determine the statistical significance of the difference between two population proportions.
To summarize:
- Confidence interval method: Provides a range of plausible values for the difference between two population proportions.
- Critical value method: Uses critical values to determine the margin of error in estimating the difference between two population proportions.
- P-value method: Determines the statistical significance of the observed difference between two population proportions based on the calculated p-value.
Hence, the confidence interval and critical value methods are equivalent in providing an interval estimate, the p-value method is used for hypothesis testing and evaluates the strength of evidence against the null hypothesis.
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pls help !!!!! i'll mark brainliest
Answer:
Last year there were 550 bison in the heard and this year it is 10% larger.
10% is also 10/100 or 0.10
To find 10% of the heard last year
550 x.0.10 = 55. To find the number in the heard this year add 550 (last year) + 55 (10% growth) = 605 or,
to find how many there are now last years heard size was 100% of the heard or 1.00. To find any percent more add it to 1.00 and multiply by the starting amount.
550 x 1.10 = 605
For the second example.
If there are 550 bison in the heard this year, and this year was a decrease of 10% from last year we can express last year's number like this.
550 = (x - (x * 0.10)) simplify;
550 = 1x - 0.10x
550 = 0.90x
Divide both sides by 0.90
x = 611.11 but it's hard to have 0.11 of a bison so realistically 611 bison last year. Subtract 10% or 61 and you indeed have 550 this year.
Find the value of x.
please.
Answer:
130°
Step-by-step explanation:
1. 59 + 71 (We do this because we want to find out their total to help us find out what the angle next to x is)
2. This should have given you 130°. Then, we will subtract 130 from 180 (180-130) (We do this because angles in a triangle add up to 180, so we want to find out what the single angle is).
3. This should have given you 50°. Since we know that angles on a straight line add up to 180°, we subtract 50 from 180 (180-50), and will eventually end up with 130°, so x=130°.
Let's look at the image and think about it for a second. We are given an exterior angle, and two opposite interior angles.
The sum of all angles in a triangle are equal to 180˚. If we look at angle ∠x , we notice something: it is a supplementary angle! ∠x + its supplementary angle is equivalent to 180. Conveniently enough, this supplementary angle is also an interior angle of the triangle.
You might be thinking, "Okay, so ∠x is a supplementary angle. Cool, so what?" Allow me to explain. Let's represent the unknown interior angle inside the triangle as 'n' (this isn't necessary to solve for x, but I'm just trying to prove how the solution works so you'll understand how to do these)
∠x + ∠n = 180˚ (These angles are supplementary)
∠n + 59˚ + 71˚ = 180˚ (The sum of interior angles of a triangle is 180˚)
If we isolate ∠n in both equations, then:
∠n = 180˚ - ∠x
∠n = 180˚ - 59˚ - 71˚
Since the right sides of both equations are equal, we can turn it into a single equation:
∠n = ∠n
180˚ - ∠x = 180˚ - 59˚ - 71˚
Isolate ∠x:
∠x = 59˚ + 71˚
So, what does this mean? This proof, essentially, establishes the fact that an exterior angle is equivalent to the sum of the two opposite interior angles. As you can see with the proof we made, ∠x is equal to the two opposite angles in the triangle, 59˚ and 71˚.
Now, let's get ourselves a definitive answer:
∠x = (59˚ + 71˚)
∠x = 130˚
If you have any further questions on how I got to the answer, just ask in the comments! Good luck!
- breezyツ
acid solution a has a 50% acid concentration, and acid solution b has a 20% acid concentration. how many ounces each of solution a and solution b must be mixed to produce 100 ounces of an acid solution with a 41% acid concentration?
Solution a needed 70 ounces and solution b needed 50 ounces
What does "1 ounce" mean?
One ounce weighs 437.5 grains or 28.349 grams and is a sixteenth of a pound (avoirdupois) of weight.
One ounce, abbreviated "oz," equals 480 grains, or 31.103 grams, and is one-twelfth of a Troy or Apothecaries' pound in weight. abbreviation for fluid ounce. a tiny amount or percentage.
So, let x=the of ounces of the 50% acid solution. The total volume after both are mixed is 100 ounces so the amount of the 20% solution will be 120-X. The equation will therefore be:
50% * x + 20% * (100-x) = 41% * 100
Dropping the ‘%’ we get
50x + 2000 - 20x = 4100
30x = 2100
x = 2100/30 = 70
Hence 70 ounces will be needed
Solution a = 70 ounces
Solution b = 50 ounces
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I need help on this question please. This is non graded.
Given the equation:
\(x^2=225\)Let's solve using the square root method.
Take the square root of both sides:
\(\begin{gathered} \sqrt{x^2}=\pm\sqrt{225} \\ \\ x=\pm15 \end{gathered}\)Therefore, the solution to the equation is:
\(x=\pm15\)ANSWER:
\(x=\pm15\)Please someone help
Answer:
D
Step-by-step explanation:
They just proved that m< 3 =m< 7 and m< 4=m< 8
So if m< 8=m< 5 and m< 7=m< 6
You can plug in m<5 for m< 8 and m<6 for m<7
Therefore:
m<6=m<3
m<5=m<4
Also, the angles that were proved congruent were vertical angles so the theorem they put works
using the rule y= 7 x-5,find the value of y when x is 3
Answer:
16
Step-by-step explanation:
If x = 3, then all we must do is substitute.
y=7(3)-5
y= 21 -5
y= 16
---
Hope I helped :)
Select the correct answer from the drop-down menu.
A
The diagram shows a stage in the construction of a line perpendicular to GH through point A.
The next step in this construction is
Reset
Next
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The diagram is missing and so i have attached it.
Answer:
Next step is;
to keep the same compass width and draw an arc centered at H crossing the previous arc in the image.
Step-by-step explanation:
A perpendicular line is to be drawn to line GH through point A.
The steps are;
1. Identification of the two end points of the line which has been done.
2. Place one leg of the compass at point G and draw a small arc above the line GH. This has been done.
3. Without changing the span of the compass, place the same leg of the compass at point H and draw another small arc above the line GH to intersect the previously drawn small arc.
4. Make use of a straight object to connect the point of intersection of the two small arcs to the point A.
This line is the perpendicular line to GH.
In the figure attached, they have just finished point 2 I wrote above. Thus, the next step is point 3.
Answer:
to keep the same compass width and draw an arc centered at H crossing the previous arc in the image.
Step-by-step explanation:
Tank A holds 430 liters of liquid. Tank B holds 3.7 * 10^6 milliliters of liquid.
How much liquid do the tanks hold altogether? Express your answer in scientific notation.
Answer:
4130 liters OR 4130000 millileters
Step-by-step explanation:
3.7*10^6 is 3700000 mil
1000mil in one liter
3700000/1000=3700liters
3700+430=4130 liters