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3 years ago

7.) 5k - 26 = 18k Need help pls

Mathematics

1 answer:

Orlov [11]3 years ago

4 0

The answer would be -2k

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dem82 [27]

D is correct because you could put in a value for x and get a true value for y

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x=3
y=14(3)-9
y=42-9
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3 years ago

Alison's solar panels have a 10-year guarantee. For how many months is the guarantee good?

ladessa [460]

Answer:

120

Step-by-step explanation:

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3 years ago

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Liliana is making a vase with a circular base. She wants the area of the base to be between 135 cm2 and 155 cm2. Which circle co

Umnica [9.8K]

Answer:

(b) Circle C is shown. Line segment A C is a radius with length 7 centimeters.

Step-by-step explanation:

Given

$Minimum\ Area = 135cm^2$

$Maximum\ Area = 155cm^2$

$\pi = 3.14$

Required

Which circle could she use

To do this, we simply calculate the areas of all the given circles

The area of a circle is:

$Area = \pi r^2$

Where

$r = radius$

$a.\ r = 6cm$

The area is calculated as thus:

$Area = \pi r^2$

$Area = 3.14 * (6cm)^2$

$Area = 3.14 * 36cm^2$

$Area = 114.04cm^2$

$b.\ r = 7cm$

The area is calculated as thus:

$Area = \pi r^2$

$Area = 3.14 * (7cm)^2$

$Area = 3.14 * 49cm^2$

$Area = 153.86cm^2$

$c.\ r = 8cm$

The area is calculated as thus:

$Area = \pi r^2$

$Area = 3.14 * (8cm)^2$

$Area = 3.14 * 64cm^2$

$Area = 200.96cm^2$

$d.\ r = 9cm$

The area is calculated as thus:

$Area = \pi r^2$

$Area = 3.14 * (9cm)^2$

$Area = 3.14 * 81cm^2$

$Area = 254.34cm^2$

From the calculations above; only the circle in option (b) has an area within the required range of 135 to 155cm^2

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3 years ago

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HELP ME I DON'T UNDERSTAND IT :(

a_sh-v [17]

Answer:

Step-by-step explanation:

A is (-8,8) so you would divide each 8 by 4 because 8 divided by 1/4 so you will have (-2,2)

B is (-8,4) so divide the by 1/4 which would be (-2,1)

C is (4,-4) so divide that and and you get (1,-1)

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3 years ago

Question in pic! help asapp! will give brainliest!

Yuliya22 [10]

Answer:

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Step-by-step explanation:

4x^-7 = 4* x^-7 = 4* 1/x^7 = 4/x^7

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3 years ago

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