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alekssr [168]
3 years ago
12

Rewrite using a single positive exponent. 7^9 x 7^-2

Mathematics
1 answer:
lidiya [134]3 years ago
6 0

Answer:

7^7

Step-by-step explanation:

When you multiply exponents with the same base, you add the exponents

Hope it helped!

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What is the surface area of a square pyramid that has a base length of 5 inches and triangular faces that are 9 inches tall
scZoUnD [109]

Answer:

115 in²

Step-by-step explanation:

SA = Area of triangular surfaces + area of the square base

SA= 2bh + b²

SA = 2(5)(9)+5²

SA = 90+25

SA = 115

7 0
3 years ago
Show how the following sequences is an arithmetic or not <br>please help me ​
serious [3.7K]

Answer:

not arithmetic

Step-by-step explanation:

An arithmetic sequence has a common difference d between consecutive terms.

Given

T_{n} = 2n² - 1

Substitute in n = 1, 2, 3, 4 to generate the first 4 terms of the sequence

T_{1} = 2(1)² - 1 = 2 - 1 = 1

T_{2} = 2(2)² - 1 = 8 - 1 = 7

T_{3} = 2(3)² - 1 = 18 - 1 = 17

T_{4} = 2(4)² - 1 = 32 - 1 = 31

check the difference between consecutive terms

7 - 1 = 6

17 - 7 = 10

31 - 17 = 14

The differences are not common hence not an arithmetic sequence

5 0
3 years ago
What is the surface area of the cube shown above?
Neporo4naja [7]

Answer:

The answer is B 54

Step-by-step explanation:

A=6(3)*2

equal 54

3 0
3 years ago
Read 2 more answers
Tyina is buying 12 shirts for the drama club. She will
Stolb23 [73]
Answer: if you times 12x2.75 I got 33 some she can spend $33.00 and not go over.

3 0
3 years ago
Find the value of x if h(x) = -25 in the function h(X) = 1/5x + 10
Dmitry_Shevchenko [17]

Answer:

x = -175

Step-by-step explanation:

Step 1: Define

h(x) = -25

h(x) = 1/5x + 10

Step 2: Substitute and Evaluate

-25 = 1/5x + 10

-35 = 1/5x

x = -175

3 0
3 years ago
Read 2 more answers
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