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3 years ago

4) At a store, pears cost $0.74 per pound. How much will 3.5 pounds of pears cost?

Mathematics

1 answer:

erica [24]3 years ago

3 0

Answer:

$2.59

Step-by-step explanation:

.74 per pound

pounds=3.5

.74x3.5=$2.59

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Rearrange the equation so n is the independent variable.<br> m+1=-2(n+6)<br> m=

S_A_V [24]

Answer:

m=-2n-13

Step-by-step explanation:

m+1=-2(n+6)

m+1=-2n-12

-1. -1

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m=-2n-13

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3 years ago

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Jay made a name tag that was 15.24 centimeters long. What is the length of the tag in millimeters?

Georgia [21]

1cm = 10mm

15.24cm x 10 = 152.4mm

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3 years ago

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PLEASE HELP!!! this test will bring my grade up!! (question in picture)

kipiarov [429]

Answer:

Step-by-step explanation:

I think it's SAS

It is because O is the common angle and the two sides are similar.

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3 years ago

Find a parametric representation for the part of the cylinder y2 + z2 = 49 that lies between the planes x = 0 and x = 1. x = u y

sweet-ann [11.9K]

Answer:

The equation for z for the parametric representation is $z = 7 \sin (v)$ and the interval for u is $0\le u\le 1$ .

Step-by-step explanation:

You have the full question but due lack of spacing it looks incomplete, thus the full question with spacing is:

Find a parametric representation for the part of the cylinder $y^2+z^2 = 49$ , that lies between the places x = 0 and x = 1.

$x=u\\ y= 7 \cos(v)\\z=? \\ 0\le v\le 2\pi \\ ?\le u\le ?$

Thus the goal of the exercise is to complete the parameterization and find the equation for z and complete the interval for u

Interval for u

Since x goes from 0 to 1, and if x = u, we can write the interval as

$0\le u\le 1$

Equation for z.

Replacing the given equation for the parameterization $y = 7 \cos(v)$ on the given equation for the cylinder give us

$(7 \cos(v))^2 +z^2 = 49 \\ 49 \cos^2 (v)+z^2 = 49$

Solving for z, by moving $49 \cos^2 (v)$ to the other side

$z^2 = 49-49 \cos^2 (v)$

Factoring

$z^2 = 49(1- \cos^2 (v))$

So then we can apply Pythagorean Theorem:

$\sin^2(v)+\cos^2(v) =1$

And solving for sine from the theorem.

$\sin^2(v) = 1-\cos^2(v)$

Thus replacing on the exercise we get

$z^2 = 49\sin^2 (v)$

So we can take the square root of both sides and we get

$z = 7 \sin (v)$

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3 years ago

Which number is located at Point A on the number line?

taurus [48]

Answer:

-4

Step-by-step explanation:

-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10

^ ^

the ^ on the left is -5 and one number over is 4 which is the ^ on the right

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3 years ago