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Vera_Pavlovna [14]

3 years ago

5

A commuter has $245 in his commuter savings account. This account changes by -15 each week he buys a ticket. In one time period,

the account changed by -240. For how many weeks did the commuter buy tickets

1 answer:

weqwewe [10]3 years ago

7 0

240 divided by 15
= 16

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Solve the proportion for the variable given <br> 4/6=9/x<br> a.10<br> b.6<br> c.1<br> d. 27/2

e-lub [12.9K]

Step-by-step explanation:

Option D is the correct answer because we will cross multiply

4/6 = 9/x

4x = 54

X = 27/2

5 0

3 years ago

Will mark brainliest. only answer if you know it. random answers will be reported.

Alexandra [31]

Answer:

b = 17.55

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + b^2 = 18^2

16 + b^2 = 324

<u>-16 -16</u>

b^2 = 308

square root them

<u>b = 17.55</u>

let me know if it is correct!

8 0

3 years ago

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The ratio of zinc to copper is 3:19,<br> if theres 741 copper how much zinc is there?

oee [108]

Answer:

117

Step-by-step explanation:

For every 3 zinc there would be 19 copper, and for every 19 copper there would be 3 zinc. There are 741 copper, so there would be 741 * 3 / 19 zinc, which turns out to be 117 zinc.

3 0

2 years ago

(Number 5)help plzzz

EleoNora [17]

Answer:

See below.

Step-by-step explanation:

So we want to prove that:

$\sqrt8+\sqrt2=3\cdot 2^{\frac{1}{2}}$

First, simplify √8. This is the same as:

$\sqrt8=\sqrt{4\cdot 2}=\sqrt4\cdot\sqrt2=2\sqrt2$

Therefore, our equation is now:

$2\sqrt2+\sqrt2=3\cdot2^{\frac{1}{2}}$

Combine like terms on the left:

$3\sqrt2=3\cdot 2^\frac{1}{2}}$

The square root of something is the same as taking that number to the one-half power. Thus:

$3(2)^\frac{1}{2}}=3\cdot 2^\frac{1}{2}}$

Rewrite:

$3\cdot2^\frac{1}{2}}\stackrel{\checkmark}{=}3\cdot2^\frac{1}{2}}$

And we're done!

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quester [9]

The answer is C) 6^5 + 9^5

6 0

3 years ago

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