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melomori [17]
3 years ago
15

Can some please help with this I will give brainliest.​

Mathematics
1 answer:
3241004551 [841]3 years ago
5 0

Answer:

x^{-28}*7^{-56}

Step-by-step explanation:

Firstly, you need to know that raising a fraction to a power raises both the top and the bottom to that power.

Second, a negative power on the top and bottom flips the fraction

Last, raising a power to a power multiplies the powers

So, \frac{7^{-8^{7}}}{x^{4^7}}=\frac{7^{-56}}{x^{28}}=\frac{1}{x^{28}*7^{56}}=x^{-28}*7^{-56}

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2. David and Josh both drove to their grandmother's birthday party. David drove 225 miles and made it in 3 hours. Josh drove 320
AnnyKZ [126]

Answer:

Josh was driving faster

Step-by-step explanation:

Josh was going faster becuase 320 divided by 4 is 80

and 225 divided by 3 is 75.

In conclusion Josh was going faster by 5mph.

6 0
3 years ago
Read 2 more answers
The sum of two consecutive numbers is 77. The difference of half of the smaller number and one-third of
diamong [38]

Answer:

so x+y=77

1/2x-1/3y=6

6 0
3 years ago
The price of a notebook was $3.70 yesterday. Today, the price fell to $3.20 . Find the percentage decrease. Round your answer to
mario62 [17]

Answer:

13.5% Decrease

Step-by-step explanation:

Use formula (change in value / original value) * 100

Change in value = 3.70 - 3.20 =0.50 Change in value is 0.50

Original Value = 3.70

Use the formula (0.50/3.70) * 100 = 13.5 % Decrease

6 0
3 years ago
Shameeka sold her hamsters to a pet store. This doubled the number of hamsters in the store. Then the store got six more hamster
nalin [4]

Answer: shameeka sold 20 hamsters to the store.

Step-by-step explanation:

Let x represent the number of hamsters that shameeka sold to the store.

Let y represent the number of hamsters that the pet store had initially.

Shameeka sold her hamsters to a pet store. This doubled the number of hamsters in the store. It means that

x + y = 2y

x = 2y - y

x = y

Then the store got six more hamsters. If the pet store has 46 hamsters now, it means that

2y + 6 = 46

2y = 46 - 6

2y = 40

y = 40/2

y = 20

Since x = y, then

x = 20

5 0
3 years ago
What are the first two steps in solving the radical equation below? Square root of x plus 1 minus 4 equals 8
sveta [45]

Answer:

x=121

Step-by-step explanation:

√x+1-4=8

1) Combine alike terms:

√x-3=8

2) Add 3 to both sides:

√x=11

3) Cancel the <u>square root</u> by squaring both sides:

x=121

5 0
3 years ago
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