Answer:
The answer is D
3(x+4)(x-i)(x+i)(x-2)
Step-by-step explanation:
Answer: C
Step-by-step explanation:
comments say it's C
The area of castles roof is 985 square feet.If shingles cost $12.50 per square foot, how much money would a cost to completely cover the roof?
Answer:
Step-by-step explanation:
Since there are 985 square feet to cover, and it costs 12.50 per square foot, you multiply 12.50 by 985 to get 12,312.50, the total cost and answer.
Shopping at savers mart, Lisa buys her children four shirts and three pairs of pants for $85.50. She returns the next day and buys three shirts and five pairs of pants for $115.00. What is the price of each shirt and each pair of pants?
Cost of 1 shirt=$7.5 and 1 pant cost=$18.5
What are linear equations?A linear equation is an equation where the optimal strength of the variables is usually unity. 1 Diploma Also known as the equation. The trend form of a single-variable linear equation is of the form Ax + B = 0. where x is a variable, A is a coefficient, and B is a constant. The trendy form of linear equations in variables is of the form Ax + By = C. where x and y are variables, A and B are coefficients, and C is a constant.
Now for the given Question:
Let the cost of shirt and pant be x and y respectively.
Then the linear equations will be;
3x+5y=115 (1)
4x+3y=85.5 (2)
Now we will balance the coefficient of x in both the equation so
multiplying equation 1 and 2 with 4 and 3 respectively then the equations become,
12x+20y=460 (3)
12x+9y=256.5 (4)
subtracting equation 4 from 3 we get
11y=203.5
y=203.5/11
y= $18.5
substituting above value of y in equation 1 we get
4x+5*18.5=85.5
4x+55.5=85.5
4x=85.5-55.5
4x=30
x=30/4
x=$7.5
Hence cost of shirt and pant are $7.5 and $18.5 respectively.
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I need help can you guys answer it the question is which rate describes a unit rate of 8:1???
options:
A: 12 feet for 3 dogs
B:40 miles for 5 hours
C: 70 for 5 umbrellas
D: 45 sit ups in 9 seconds
Answer:
C VOTE BRAINlY
Step-by-step explanation:
Please help you guys, Look at the picture attached
Answer:
Step-by-step explanation:
if (x,y) is the centroid. Then x=(x1+x2+x3)/3,y=(y1+y2+y3)/3
5.
x=(-2+4+10)/3=4
y=(6+0+6)/3=4
centroid=(4,4)
6.
x=(3+5-2)/3=2
y=(3-1+1)/3=1
centroid=(2,1)
I NEED HELP PLEASE ASAP - will give brainliest!!!!!!!
28.) A number cannot have a value equal to its square.
Is this true or false? If false, give a counterexample.
Answer:
false 1 is equal to its own square
Which value of x is a possible solution to (2x−10)(3x+12)=0?
A: r = -36
B: r = -20
C: r = -5
D: r = -4
Answer:
D: x = -4
Step-by-step explanation:
Given equation:
(2x - 10)(3x + 12) = 0
Therefore:
⇒ 2x - 10 = 0
⇒ 2x = 10
⇒ x = 5
And:
⇒ 3x + 12 = 0
⇒ 3x = -12
⇒ x = -4
So the possible solutions of the equation are x = 5 or x = -4
Answer:
D: r = -4
Explanation:
\(\rightarrow \sf (2x-10)(3x+12)=0\)
set to zero
\(\rightarrow \sf 2x-10=0, \:3x+12=0\)
change sides
\(\rightarrow \sf 2x=10, \:3x=-12\)
simplify
\(\sf \rightarrow x=5,\:x=-4\)
How do
you write 0.4 as a fraction?
Answer:
Step-by-Step Solution
0.4 = 2/5 as a fraction
To convert the decimal 0.4 to a fraction, just follow these steps:
Step 1: Write down the number as a fraction of one:
0.4 = 0.41
Step 2: Multiply both top and bottom by 10 for every number after the decimal point:
As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,
0.41 = (0.4 × 10)(1 × 10) = 410.
Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(4,10) = 2. So,
(4÷2)(10÷2) = 2/5 when reduced to the simplest form.
help! i can’t figure it out
Answer:
15
Step-by-step explanation:
x + 2y
Putting x = 7, y = 4, we have
7 + 2(4)
= 7 + 8
= 15
Hope it helps.
If you have any query, feel free to ask.
Step-by-step explanation:
It's saying x = 7 and y = 4, which means everywhere there is an x, you'll place a 7 and everywhere there is a y, you'll place a 4
x + 2y turns into (7) + 2(4)
Now we can answer the bottom question
2(4) = 8
7 + 8 = 15
so...
If x =7 and y=4, then x+2y= 15
find the perimeter of the rectangle in terms of a
I’m marking branliest
Answer:
2a + 3 = 5a
8a - 12 = -4a
5a + 5a + -4a + -4a
10a + -4a + -4a
2a
The results of a two-tailed hypothesis test are reported as follows: t(21) = 2.38, p < .05. What was the statistical decision and how big was the samp
The statistical decision based on the reported results of the hypothesis test is that the null hypothesis was rejected at the α = .05 significance level.
The t-value reported is 2.38, and the degrees of freedom are 21. This suggests that the test was likely a t-test with an independent samples design, where the sample size was n = 22 (since df = n - 1).
The p-value reported is less than .05, which indicates that the probability of obtaining the observed results, or results more extreme, under the assumption that the null hypothesis is true, is less than .05. Therefore, the null hypothesis is rejected at the .05 significance level in favor of the alternative hypothesis.
In conclusion, the statistical decision is that there is sufficient evidence to suggest that the population means are not equal, and the sample size was 22. However, we do not have information about the direction of the effect (i.e., whether the difference was positive or negative).
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Answer this to be Donkey Kong's friend
36x + 324 - 28x + 196
combine like terms: 36x - 28x = 8x and 324 + 196 = 520
8x+520
Complete this fraction into percentage.
1. 25 boys out of 100 children
Answer:
25%
Step-by-step explanation:
25 out of 100 is 25%
the equation y = 3x – 6 and the table shown describe two different linear functions.
Which function has the greatest rate of change? Enter either Equation or Table in the box below. Then, explain.
The function in the equation has a slope of ____ and the function in the table has a slope of ___
Answer:
The slope is 3, the function in the table has a slope of 3.5
Step-by-step explanation:
For the equation, you can just look at the number before x for the slope. For the table, you need to form an equation. (1,5.5) (2,9) are the points that I would use. The equation is y=3.5x-2, the slope is 3.5.
The function in the table has greater rate of change .
Given,
Line equation : y = 3x - 6
Tabular data .
Now,
In line,
y = 3x - 6
Compare it with the standard form of line
y = mx + c
Hence the slope of line is 3 .
Now the slope of table,
m = y2 - y1 /x2 - x1
m = 9 - 5.5 / 2 - 1
m = 3.5
Slope of table is 3.5 .
Thus the table data has greater slope and thus have a greater rate of change than the line .
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Can somebody help me, i would really appreciate it!!
It will take 5 seconds for the waste to hit the ground.
How many seconds will it take for the waste to hit the ground?We know that the bird releases the waste from a height of 400ft, so the height equation is:
\(h(t) = -16t^2 + 400\)
The waste will hit the ground when its height is equal to zero, so we just need to solve the quadratic equation:
\(h(t) = 0 = -16t^2 + 400\\\\16t^2 = 400\\\\t^2 = 400/16 = 25\\\\\)
Now we can apply the square root in both sides:
\(t = \sqrt{25} = 5\)
It will take 5 seconds for the waste to hit the ground.
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There were 16 eagles in an area. Now there's 28 eagles in the area. What is the percent increase?
Answer:
175%
Step-by-step explanation:
175% in a decimal is 1.75 multiply this by 16 and you have 28 there's the percent increase
Match the correct scenario with the correct unit rate format.
1. meters/second
2. $/pound
3. $/ tire
4. people/class
5. miles/gallons
6. calories/serving
The manufacturers of can of salted mixed nuts state that the ratio of peanuts to other nuts is 6 to 5 . If 414 peanuts are in a can how many other nuts should also be in the can
Answer:
345 other nutsStep-by-step explanation:
Ratio problem, we are going to use the part to all approach
Step one:
given data
the ratio of peanuts to other nuts is 6 to 5
otherwise expressed as 6:5
the total ratio is 6+5= 11
the total number of peanut is 414
let the other nuts be x
6/5=414/x
cross multiply we have
414*5= 6x
2070=6x
divide both sides by 6
x=2070/6
x=345
345 other nuts
Kyle earns $6 per hour babysitting. Select the answer that shows the dollars Kyle will earn babysitting for h hours and for 4 hours.
Answer: Kyle will earn 6h dollars babysitting for h hours, and 6 x 4 = 24 dollars babysitting for 4 hours.
Step-by-step explanation:
Answer:
Step-by-step explanation:
please, please help me with this!! it’s very important.
The parabola's vertex is located at (-2, 8). The parabola's graph is then depicted below.
Let a be the leading coefficient and the parabola's vertex be the point (h, k). The parabola's equation will therefore be stated as,
y = a(x - h)² + k
The parabola's equation is stated as,
y = -(x + 2)² + 8
The downward-pointing parabola is represented by the negative sign.
The vertex of the parabola is at (-2, 8), according to the equation above. The parabola's graph is then depicted below.
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There are 60 inches in 5 feet. How many inches are in 8 feet?
63 inches
72 inches
96 inches
80 inches
Answer:
96
Step-by-step explanation:
multiply by 12 because thats how many inches are in a foot
There are 96 inches in 8 feet.
feet to inches:1 foot = 12 inchesThere are 60 inches in 5 feet. Therefore,
5 feet = 60 inches
8 feet = ?
cross multiply
length in inches = 60 × 8 / 5
length in inches = 480 / 5
length in inches = 96 inches.
Therefore, there are 96 inches in 8 feet.
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pls help if you can asap!!!!
Answer: A
Step-by-step explanation: I would say A because the angle is greater than 90 degrees
Answer:
We have supplementary angles.
76 + 3x + 2 = 180
3x + 78 = 180
3x = 102
x = 34
in a simple linear regression model, which of the coefficients in the estimated sample regression equation indicates the change in the predicted value of y when x increases by one unit?
In a simple linear regression model, the coefficient of the independent variable (x) in the estimated sample regression equation indicates the change in the predicted value of the dependent variable (y) when x increases by one unit. This coefficient is also known as the slope of the regression line. Therefore, to calculate the predicted value of y, we multiply the coefficient by the value of x and add the intercept.
In a simple linear regression model, the coefficient that indicates the change in the predicted value of y when x increases by one unit is the "slope coefficient" or the "regression coefficient" (usually denoted as b1). This coefficient represents the relationship between the independent variable x and the dependent variable y.
The linear regression equation is given as:
y = b0 + b1 * x
Where:
- y is the predicted value of the dependent variable
- b0 is the intercept coefficient (where the line intersects the y-axis)
- b1 is the slope coefficient (the change in y when x increases by one unit)
- x is the independent variable
In this equation, b1 indicates the change in the predicted value of y when x increases by one unit.
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Write the product using exponents.
(−7) (−7) (−7) (−7) (−7) (−7) (−7) (−7)
Answer:
(-7)^8
Step-by-step explanation:
You write as (-7) to the power of n where n is the #of times you write (-7)
Answer:
-7
Step-by-step explanation:
A car travels at a constant speed of 112 km per hour. Calculate how far the car will travel in 15 minutes.
The distance, that car will travel in 15 minute, is 28 km.
What is speed, distance and time?The formula used to explain the relationship between speed, distance, and time is speed distance time.
That is speed = distance/ time
So, distance = speed * time
Alternatively, you can calculate the time by dividing the distance traveled by the speed. You can figure out the third input if you know two of the inputs.
Given Speed of car = 112 km per hour
Time = 15 minutes = 15/60 hour
Time = 1/4 hour
Distance traveled by car in 15 minute = Speed of car * time
Distance = 112 * 1/4
Distance = 28 km
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a sample of 400 observations will be taken from an infinite population. the population proportion equals 0.8. find the probability that the sample proportion will be greater than 0.78.
The probability that the sample proportion will be greater than 0.78 is:
78% of 400 is 0.78× 400 = 312.
So this probability is 1 subtracted by the p value of Z when x = 312
Z = (X - μ)/σ
We are going to approximate the binomial distribution to the normal.
Binomial probability distribution-
Probability of exactly x sucesses on n repeated trials, with p probability.
Can be approximated to a normal distribution, using the expected value and the standard deviation.
The expected value of the binomial distribution is:
E(X) = np
The standard deviation of the binomial distribution is:
√V(X) = √np(1 - p)
Normal probability distribution-
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation o, the zscore of a measure X is given by:
Z = (X-μ)/σ
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z- score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
When we are approximating a binomial distribution to a normal one, we have that-
μ = E (X), σ = √V√(X).
In this problem, we have that:
n=400, p=0.8
So = E(X)=np=400-0.8=320
σ = √V(X) = √np(1-p)=√400×√0.8×√0.2=8
Hence, the probability that the sample proportion will be greater than 0.78 is:
78% of 400 is 0.78× 400 = 312.
So this probability is 1 subtracted by the p value of Z when x = 312
Z = (X - μ)/σ
Z = (312- 320)/8.
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answerrrrrr plssss ill giveee brainliesttttt
\(m\angle E=\sin \dfrac{\sqrt{10}}{2\sqrt5}=\sin \dfrac{\sqrt2}{2}=45^{\circ}\)
Identify the number as prime, composite or neither. If the number is composite, write it as the product of prime factors. 540
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The number is prime.
B. The number is composite. Its prime factors written as a product are ( )
C. The number is neither prime nor composite.
Answer:B. The number is composite. Its prime factors written as a product are (5*3^3*2^2)
Step-by-step explanation:
Since 540 is an even number, that means it can be divided by 2. This means that the number is composite.
You can keep dividing it by 2 until you can't anymore.
Once you divide 540 by 2 twice, then you get 135.
You can divide it by 5 because the ones digit is 5.
Then you get 27, which is 3 times itself 3 times.
You finally multiply the numbers you divided by, and you get 2*2*5*3*3*3, which is 5*3^3*2^2.
what the metric system of measurement is based on the number?
The metric system of measurement is based on the number 10.
This system is also known as the International System of Units (SI) and is used in most countries around the world. In the metric system, various units of measurement are defined as multiples or fractions of a base unit, which is defined for each quantity being measured. For example, the base unit for length is the meter, and the base unit for mass is the kilogram. Prefixes such as kilo-, centi-, and milli- are used to indicate multiples or fractions of the base unit, based on factors of 10. For example, a kilometer is 1000 meters, a centimeter is 1/100 of a meter, and a milligram is 1/1000 of a gram. This makes the metric system easy to use and convert between units, as well as consistent and universally recognized.
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In Exercises 40-45, find the projection of v onto u. Draw a sketch in Exercises 40 and 41. 40. u = [-1 1], v = [-2 4] 41. u = [3/5 -4/5], v [1 2]
Exercise 40: u = [-1 1], v = [-2 4]
The projection of v onto u is -1/2, as it is the component of v in the same direction as u.
Exercise 41: u = [3/5 -4/5], v [1 2]
The projection of v onto u is -4/5, as it is the component of v in the same direction as u.
Exercise 40: u = [-1 1], v = [-2 4]
The projection of v onto u is -1/2, as it is the component of v in the same direction as u. To draw a sketch, draw two vectors with the given coordinates, and then draw a vector from the tail of v that is one half of the length of u.
Exercise 41: u = [3/5 -4/5], v [1 2]
The projection of v onto u is -4/5, as it is the component of v in the same direction as u. To draw a sketch, draw two vectors with the given coordinates, and then draw a vector from the tail of v that is four fifths of the length of u.
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What is the distance between the following points?
y
5
3
2
1+
++
-9-8-7 -6 -5 -4 -3 -2
-24
-3
-4+
.
Answer: c. √65
Step-by-step explanation:
that’s what’s right on khan