Write the word sentence as an equation. Then solve the equation.
13 subtracted from a number w is 15
\(w - 13 = 2\)
Answers
This is because you can’t subtract a letter by a number, so you do the equation W= 2 + 13 which equals W=15
Related Questions
The human lung has about 80 million alveoli. Give two features of the alveoli that allow large amounts of oxygen to enter the blood.
Answers
Answer:
Alveoli forms the respiratory surface in human body.Each alveolus is sac like structure bounded by a single layer of epithelial cells.It is bound on the outside by a network of capillaries. The pulmonary artery from the heart containing deoxygenated blood enters the lungs and then becomes oxygenated after passing in the capillaries through the lungs.
The sequence of transformations, RO,90° ° rx-axis, is applied to ΔXYZ to produce ΔX''Y''Z''. If the coordinates of Y'' are (3, 0), what are the coordinates of Y?
Y(
,
)
Answers
The needed coordinate of Y when the sequence of transformations, R90° ° Tx-axis, is used on ΔXYZ to make ΔX''Y''Z' is (0, 3)
What is the coordinate?The process of transformation involves the implementation of a fresh range of mathematical coordinates which are expressed as alternative functions of the initial coordinates.
A rotation 90 can be represented by the formula (x, y) —> (-y, x)
Note that the there in the question, the coordinate Y is (3, 0) Of the coordinate is transformed by 90degrees, the given new coordinate will be (0, 3) to (3,0)
So:
3 is the x point.
0 is the y point.
When you replace these two points (switch places) Hence, the x coordinate is 0 and the y coordinate is 3 giving us (3,0)
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If the coordinates of Y'' are (3, 0), then the coordinates of Y is (0, 3)
How to determine the coordinates of Y?From the question, we have the following parameters that can be used in our computation:
The sequence of transformations:
RO,90° rx-axisThis means that we rotate by 90 degrees and we reflect the triangle across the x-axis
The rule of 90° clockwise rotation is (x,y) = (y,-x)
The rule fo rx-axis is (x, -y)
When combined, we have
(x,y) = (y,-x) = (y, x)
using the above as a guide, we have the following:
If the coordinates of Y'' are (3, 0), then the coordinates of Y is (0, 3)
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Help plz!!! USING THE SHAPE TOOL, CIRCLE THE NAME OF THE STUDENT WHO MADE AN INCORRECT STATEMENT
ABOUT EACH ROTATION. THEN, CORRECT AND REWRITE THE STATEMENT IN THE WHITE BOX.
Answers
Answer:
Figure B seems incorrect to me.
I NEED THIS ASAP its geometry ( look at picture).
Answers
Answer:
-1.118 is the required value of tan theta
Select all of the equations below in which a is directly proportional to b.
a=b²
b
= 1/1/20
a=
2
a= ²
b
a=2b
a=b+2
Answers
The equations which show direct proportion between a and b are:
a=2b and a=b/2.
What is direct proportion?Direct proportion or direct variation is the relation between two quantities where the ratio of the two is equal to a constant value. It is represented by the proportional symbol, ∝. In fact, the same symbol is used to represent inversely proportional, the matter of the fact that the other quantity is inverted here.
Example: x and y are two quantities or variables which are linked with each other directly, then we can say x ∝ y. When we remove the proportionality symbol, the ratio of x and y becomes equal to a constant, such as x/y = C, where C is a constant.
Given, two variables a and b
If two variables a and b are in direct proportion
then,
a/b = constant.
1. a = b²
a/b = b
which is not constant
⇒ a is not in direct proportion with b.
2. a = 2b
a/b = 2
which is constant
⇒a is in direct proportion with b.
3. a = b/2
a/b = 1/2
which is constant
⇒ a is in direct proportion with b.
4. a=b+2
a/b = 1+2/b
which is not constant
⇒ a is not in direct proportion with b.
5. a = 2/b
ab = 2
⇒a is inversely proportional to b.
Hence, In equation a=2b and a=b/2, a is directly proportional to b.
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A small square has an area of 40 inches squared. A large square has sides that are 8 times longer than the small square. What is the area of the large square?
Answers
Solution
Given that
Area f small square = 40 inches squared.
\(\begin{gathered} a=40 \\ \\ \text{ since a}=l^2 \\ \\ \Rightarrow40=l^2 \\ \\ \Rightarrow l=\sqrt{40} \end{gathered}\)Let the side of the large square be L
Since the large square has sides that are 8 times longer than the small square
=> L = 8l
\(\begin{gathered} \Rightarrow L=8l \\ \\ \Rightarrow L=8(\sqrt{40}) \end{gathered}\)Hence, the area of Large square is;
\(A=L^2=(8\sqrt{40})^2=64\times40=256\)Hence, the area of the large square is: 256 inches squared.
Let f(x) be a nonnegative smooth function (smooth means continuously differentiable) over the interval [a, b]. Then, the area of the surface of revolution formed by revolving the graph of y f(x) about the x-axis is given by
S= b∫a πf(x)1√+[f′(x)]^2 dx
Answers
The formula for the surface area of revolution, S, formed by revolving the graph of y = f(x) about the x-axis over the interval [a, b], is given by S = ∫(a to b) 2πf(x) √(1 + [f'(x)]^2) dx.
To calculate the surface area of revolution, we consider the small element of arc length on the graph of y = f(x). The length of this element is given by √(1 + [f'(x)]^2) dx, which is obtained using the Pythagorean theorem in calculus. We can approximate the surface area of revolution by summing up these small lengths over the interval [a, b]. Since the surface area of a revolution is a collection of circular disks, we multiply the length of each element of arc by the circumference of the disk formed by revolving it, which is 2πf(x). Integrating this expression from a to b, we obtain the formula for the surface area of revolution:
S = ∫(a to b) 2πf(x) √(1 + [f'(x)]^2) dx.
This formula takes into account the variation in the slope of the function f(x) as given by f'(x), ensuring an accurate representation of the surface area of revolution. By evaluating this integral, we can determine the precise surface area for the given function f(x) over the interval [a, b].
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This worksheet is a review of circles and lines, and will give you some practice with algebra and with graphing. Also, this worksheet introduces the idea of "tangent lines" to circles. Later on in Math 124, you'll learn how to find tangent lines to many other types of curves. Two circles, called C1 and C2, are graphed below. The center of C_1 is at the origin, and the center of C_2 is the point in the first quadrant where the line y = x intersects C1. Suppose C1 has radius 2. C2 touches the x and y axes each in one point. What are the equations of the two circles?
Answers
The equations of the two circles are (x-0)^2 + (y-0)^2 = 2^2 or x^2 + y^2 = 4 and (x-1)^2 + (y-1)^2 = 1^2 or (x-1)^2 + (y-1)^2 = 1.
The equation of a circle with centre (a,b) and radius r is given by (x-a)^2 + (y-b)^2 = r^2.
C1 has centre (0,0) and radius 2, so its equation is (x-0)^2 + (y-0)^2 = 2^2 or x^2 + y^2 = 4.
C2 touches the x and y axes each in one point, so it must have a centre on the line y=x and a radius equal to the distance from the centre to either of those points of tangency. Since the centre of C2 is on the line y=x and it is in the first quadrant, the coordinates of the centre are (1,1). The distance from the centre to the point of tangency on the x-axis is 1, so the radius is 1. The equation of C2 is (x-1)^2 + (y-1)^2 = 1^2 or (x-1)^2 + (y-1)^2 = 1.
Therefore, The equations of the two circles are (x-0)^2 + (y-0)^2 = 2^2 or x^2 + y^2 = 4 and (x-1)^2 + (y-1)^2 = 1^2 or (x-1)^2 + (y-1)^2 = 1.
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sos!! not sure why my answers not working!!
Answers
positive?
Step-by-step explanation:
..............
Triangle ABC was transformed to create triangle DEF.
2 triangles are shown. Triangle A B C has point A at the top, B on the bottom right, and point C on the bottom left. Triangle D E F has point D at the top, E on the bottom right, and F on the bottom left. The triangles are identical.
Which statement is true regarding the side in the image that corresponds to Side length B A?
Side length B C corresponds to Side length B A because they are about the same length.
Side length E D corresponds to Side length B A because they are in the same position.
Side length E F corresponds to Side length B A because the transformation is isometric.
Side length F D corresponds to Side length B A because the length is not preserved.
Answers
Answer: Side length E D corresponds to Side length B A because they are in the same position.
Step-by-step explanation:
Answer: b
Step-by-step explanation:
"Nine less than four times a number is greater than seventeen." Which inequality is a correct translation of this statement?
Answers
Hi, you didn’t post answer choices but this should be it:
4x - 9 > 17
1.) In creating confidence intervals with 95% confidence, about 5% of the possible intervals will miss the true value of the population parameter. Why do some of the intervals miss the true parameter?
Select one:
A. Because the parent population is skewed and about 5% of the distribution is in the tail of the distribution.
B. Because the standard deviation of the sample is about 5% smaller than the population standard deviation.
C.Because some samples are taken in an incorrect way and we know from experience that this happens about 5% of the time.
D.Because about 5% of possible samples lead to a statistic in the extreme tails of the sampling distribution.
Answers
Answer:
D.Because about 5% of possible samples lead to a statistic in the extreme tails of the sampling distribution
(since the confidence interval is 95%)
Step-by-step explanation:
Please I need help anything
Answers
Step-by-step explanation:
g(x)=5/4(2)^x
Make a table of points. Choose any 5.
X. Y
0 5/4. 5/4*2^0
1. 5/2. 5/4*2^1
2. 5. 5/4*2^2
3. 10. 5/4*2^3
4. 20. 5/4*2^4
The x, y table above are x, y coordinates to plot. To the right is just solving the equation with different values for the power of 2
8. The volume of a figure is 975 ft. If the
dimensions are multiplied by 2/5, what will be
the volume of the new figure
Answers
New figure is approximately 31.05 ft.
What is the bethe volume ?To solve this problem, we can use the fact that the volume of a figure is given by:
V = l × w × h
where V is the volume, l is the length, w is the width, and h is the height.
If the dimensions of the figure are multiplied by a factor of k, then the new volume V' is given by:
V' = (kl) × (kw) × (kh)
= k^3 × V
In this case, the dimensions are multiplied by 2/5, so k = 2/5. Thus, the new volume V' is given by:
V' = (2/5)^3 × 975
= 31.05 ft
Therefore, the volume of the new figure is approximately 31.05 ft.
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Need help asap thank u !!! Finding the measure of angle N
Answers
Answer:
Its 20
Step-by-step explanation:
In the formula P = 2L + 2W, what does the P represent? What does the L represent? and what does the W represent?
Answers
Someone help me SHOW WORK pleass
Answers
Answer:
2 y
3x²
Step-by-step explanation:
4xy³
6x³y²
lowest term 4 and 6
Rule on dividing exponents: subtract them
Verify each identity. Give the domain of validity for each identity. cscθ-sin θ=cotθcosθ.
Answers
The identity cscθ - sinθ = cotθcosθ can be verified by manipulating the given expressions and simplifying them. The domain of validity for this identity is where both sides of the equation are defined, which is when θ is not equal to multiples of π.
To verify the identity cscθ - sinθ = cotθcosθ, we start by expressing each term in terms of sine and cosine.
cscθ is the reciprocal of sinθ, so cscθ = 1/sinθ.
cotθ is the reciprocal of tanθ, so cotθ = 1/tanθ = cosθ/sinθ.
Now, we substitute these expressions back into the identity:
1/sinθ - sinθ = (cosθ/sinθ)cosθ.
To simplify, we get:
(1 - sin²θ)/sinθ = cos²θ/sinθ.
Using the Pythagorean identity sin²θ + cos²θ = 1, we can replace (1 - sin²θ) with cos²θ:
cos²θ/sinθ = cos²θ/sinθ.
Therefore, we have verified the identity cscθ - sinθ = cotθcosθ.
The domain of validity for this identity is when both sides of the equation are defined. Since cscθ is not defined when sinθ equals zero and cotθ is not defined when sinθ equals zero, the domain of validity for this identity is when θ is not equal to multiples of π. In other words, the identity holds for all values of θ except when sinθ equals zero.
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Q
is the midpoint of PR¯¯¯¯¯¯¯¯
. If PQ=4x+5,
andQR=2x+25
, what is the value of x
Answers
Answer:
x = 10
Step-by-step explanation:
Q is the midpoint of PR: PQ = QR
4x + 5 = 2x + 25
2x = 20
x = 10
Answer the following questions. when you have finished, submit this assignment to your teacher by the due date for full credit.
total score: ____ of 10 points
(score for question 1: ___ of 5 points)
1. describe where genes are located and the function of genes.
type your answer here:
(score for question 2: ___ of 5 points)
2. describe how changes (mutations) to genes can result in changes to proteins.
Answers
Genes are located on chromosomes, which are structures found in the nucleus of cells. Each gene is a specific segment of DNA that contains instructions for building and maintaining proteins, the functional molecules in our bodies.
Genes play a crucial role in determining various traits and characteristics of an organism, including physical features, biochemical processes, and susceptibility to certain diseases.
Mutations, or changes, in genes can lead to alterations in the corresponding proteins. Proteins are synthesized by the ribosomes using the information encoded in genes.
Mutations can affect the DNA sequence of a gene, resulting in changes to the mRNA transcript during gene expression. These changes can lead to modifications in the amino acid sequence of the protein, which can impact its structure, function, or stability. Depending on the specific mutation, protein function may be impaired, enhanced, or completely altered, which can have significant consequences for cellular processes and overall organismal function.
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can someone help with this q3
Answers
3 because 6x3 +2 =20 and -3+23=20
Answer:
AC=20
Step-by-step explanation:
6y+2 = -y+23
move y to one side
7y+2=23
move 2 to the other side
7y=21
divide by 7 on both sides to isolate y
y=3
Substitute y in
-3+23=20
Check your work,18+2=20
E
What is the value of d to the nearest hundredth?
d
7.2
D
42°
d
Answers
The triangle has 3 sides and angles. The measure of "d" from the given diagram is 6.48
Application of SOH CAH TOAThe given diagram is a triangle. According to the SOH CAH TOA identity;
tan theta= opp/adj
Given the following
opp = d
adj = 7.2
Substitute
tan 42 = d/7.2
d = 7.2tan42
d = 6.48
Hence the measure of "d" from the given diagram is 6.48
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Find the measure of the arc or angle indicated. Assume that lines which appear tangent are tangent.
Answers
Answer:
? = 50°
Step-by-step explanation:
You want the measure of the unknown intercepted arc where chords cross at an angle of 125° intercepting one arc that is 200° and another that is unknown.
Angle at chordsThe angle where the chords cross is the average of the intercepted arc measures.
(ED +VC)/2 = 125°
200° +VC = 250° . . . . . multiply by 2
VC = 50° . . . . . . . . . . subtract 200°
The unknown arc VC has measure 50°.
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Dave wants to sketch a scale drawing of the porch. Choose a reasonable scale and make a scale drawing of the porch. Label the demensions of the model
Answers
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photo.
My answer:
Given the information:
20 feet long 6 feet widthA reasonable scale and make a scale drawing of the porch could be :
1 inch =4 feet
<=> the length side: 20:4 = 5 inches
<=> the width side: 6:4 = 1.5 inches
Hope it will find you well.
A basket contains 6 peaches and 8 plums.
What is the ratio of peaches to total pieces
of fruit? (Lesson 4.2)
How do this
Answers
Find total pieces of fruit:
6 + 8 = 14 total pieces of fruit.
The ratio of peaches to total fruit is written as a fraction with the number of peaches over the total number of fruit:
6/14
Both numbers are divisible by 2, so 6/14 gets reduced to 3/7
The answer is 3/7
Answer:
3:7
Step-by-step explanation:
First, you have to add the number of peaches and plums to get your total amount of fruit, you would get 14 once you add 6 peaches and 8 plums.
Because you have 6 peaches and 14 total pieces your answer would narrow down to 6:14. After you reduce, you get 3:7.
Hope this helps.
Find the measure of the arc or angle indicated.
Answers
Answer:
Step-by-step explanation:
17) ∠V is half the difference of long arc TW and short arc UW... (198° - UW)/2 = 69°.. 198° -138° = UW = 60° (C)
2 x seminggu (3 x 40 menit)
Answers
Answer:2x fhfha
Step-by-step explanation:
ok so you need to do the sat of the something
What is the sum?
- 1 1/8 + (-1/2) = -1 1/8 + ( - 4/8) = ?
Answers
Answer:
\(-1\frac{5}{8}\)
Step-by-step explanation:
-1 1/8 - 1/2 =- 1 1/8 -4/8
= -9/8-4/8
=-13/8
=-1 5/8
Hopes this helps please mark brainliest
help me solve both questions
Answers
Answer:
Step-by-step explanation:
are u on russian math?
There were 127 birds on the endangered species list in some year. This is more than twice the number of reptiles on the list. How many reptiles were on the endangered species list in this year?
Answers
r = number of reptiles on the endangered species list
2r = twice that number
2r < 127 since the 127 is more than twice the number of reptiles
Solve for r by dividing both sides by 2
2r < 127
r < 127/2
r < 63.5
If r is a positive whole number, then r could be anything from this set: {1, 2, 3, ..., 62, 63}
Unfortunately there isn't enough information to fully pin down what r is.
I would ask your teacher for further clarification.