4 years ago

Help pelaseeeeeeeee

Mathematics

1 answer:

monitta4 years ago

5 0

Answer:

A or C

Step-by-step explanation:

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The value of y varies jointly with the values of x and z. When x = 4 and z = 16, the value of y is 320. When x = 8 and z = 10, t

Viktor [21]

When x is doubled, y is doubled. When z is multiplied by 5/8, so is y. The result of both changes is that y is multplied by 2·(5/8) = 5/4. The new value of y is

... y = 5/4·320 = 400

_____

If you really want to, you can use the formula

... y = kxz

and compute the value of k as

... k = y/(xz) = 320/(4·16) = 5

Then use this formula with the new values of x and z:

... y = 5·8·10 = 400

8 0

4 years ago

Please help and show work

melisa1 [442]

Answer:

first one is simnple cross multiply and divide

12*7=4x

84=4x

x=21

2nd same process but more steps

7x=5(x+8)

7x=5x+40

7x-5x=40

2x=40

x=20

Step-by-step explanation:

4 0

3 years ago

Use the absolute value to express the distance between -10 and 16 on the number line.

shusha [124]

Answer:

Step-by-step explanation:

|-10|+16

10+16

6 0

3 years ago

ILL GIVE BRAINLIEST! PLEASE ANSWER IF YOU SEE THIS!!! David has a container filled with quarters and nickels. He has 29 coins wh

masha68 [24]

22 quarters and 7 nickels

5 0

3 years ago

Read 2 more answers

This is my question

Talja [164]

Answer/Step-by-step explanation:

∆ABC is similar to ∆CDE. Therefore, the ratio of their corresponding sides are proportional.

This,

$\frac{DE}{AB} = \frac{DC}{AC}$

$\frac{4}{3} = \frac{x + 3}{x + 1}$

Solve for x

$4(x + 1) = 3(x + 3)$

$4x + 4 = 3x + 9$

$4x + 4 - 4 = 3x + 9 - 4$

$4x = 3x + 5$

$4x - 3x = 3x + 5 - 3x$

$x = 5$

Use the value of x to find AC and DC

$AC = x + 1 = 5 + 1 = 6$

$DC = x + 3 = 5 + 3 = 8$

4 0

3 years ago

Help pelaseeeeeeeee​

Help pelaseeeeeeeee