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3 years ago

8/10 = z/30 what does z equal

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

8 0

8×30=10×z

10z=240

z=24

Hence the value of z is 24

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Choose all statements that show correct reasoning for finding 15 divided by 2/9

skelet666 [1.2K]

Answer:

The second and the last options.

Step-by-step explanation:

15/ 2/9 =67.5 Solve the original problem

15*2/9 =3.33333333333

15*9/2 =67.5

(15* 1/9) /2=0.833333333333333

15*9* 1/2 =67.5

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3 years ago

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Answer:

I think 52% of students chose art

Step-by-step explanation:

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3 years ago

William is going on vacation and taking his dog Pickles along. Pickles eats 3 cups of Hungry

prohojiy [21]

Answer:

5 days

Step-by-step explanation:

He eats 3 cups a day and its a 15 cup bag,

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3 years ago

Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley

lisabon 2012 [21]

Answer:

<em>Riley has 72 tokens</em>

Step-by-step explanation:

<u>System of Equations </u>

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

$x+y=135$

Solving for y

$y=135-x$

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

$\displaystyle \frac{x}{y}=\frac{8}{7}$

Or equivalently

$7x=8y$

Replacing y from the first equation

$7x=8(135-x)$

Operating

$7x=1080-8x$

Simplifying

$15x=1080$

$\boxed{x=72}$

Riley has 72 tokens

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3 years ago

What is 8 × 3/4 hour?

Lesechka [4]

Answer:

6 hours

Step-by-step explanation:

8 × 3/4 hours

= (8 x 3) / 4

= 24/4

= 6 hours

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3 years ago

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