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2 years ago

Solve for y.8^3-3y=256^4y

1 answer:

3 0

$8^{3-3y}=256^{4y}\\\\(2^3)^{3-3y}=(2^8)^{4y}\\\\2^{3(3-3y)}=2^{8\cdot4y}\\\\2^{9-9y}=2^{32y}\iff9-9y=32y\\\\-9y-32y=-9\\-41y=-9\ \ \ \ /:(-41)\\\\y=\frac{9}{41}$

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there are 153 people in line for a ride at an amusement park the ride can take 40 people at a time how many times will the ride

krek1111 [17]

Answer:

Step-by-step explanation:

we need to divide

153/40=3.825

the ride needs to run 4 times

8 0

2 years ago

"!I NEED HELP WITH MY MATH PROBLEMS, PLEASE!" (27 POINTS)

Len [333]

25. yes it's direct variation
26. yes

5 0

2 years ago

Read 2 more answers

Given: r is inversely proportional to s. If r = 16 when s = 3, then write the formula for the relation between r and s.

riadik2000 [5.3K]

Answer:

Step-by-step explanation:

Given that r is inversely proportional to s then the equation relating them is

r = $\frac{k}{s}$ ← k is the constant of proportion

To find k use the condition r = 16 when s = 3

k = rs = 16 × 3 = 48

r = $\frac{48}{s}$ ← equation of variation → B

3 0

2 years ago

Sophia exchanged 1000 U.S. dollars for the South African currency, which is called the rand. The exchange rate was 7.15 rand to

dolphi86 [110]

Part a:-

7.15 rands = 1 dollar

So we are going to MULTIPLY to find out how many rands there are going to be.

1000 × 7.15 = 7150

So, 7150 rands is your answer.

Part b:-

To do this first we will DIVIDE.

6274 ÷ 7.15 ≈ 877.482.......

So, 6274 rands is ABOUT $878.

Par a:- 7150 rands

Part b:- about $878.

Hope I helped ya!!!!!

3 0

3 years ago

Need help, please explain the answer

stellarik [79]

Answer:

7 - x meters

Step-by-step explanation:

This is a difference of squares. The formula for difference of squares is

a^2-b^2 = (a-b)(a+b)

So plug the numbers we know into this formula.

Area = lw

49 - x^2 = (a-b)(7+x)

49 - x^2 = (7-x)(7+x)

The length is 7 - x meters.

7 0

3 years ago