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KatRina [158]
3 years ago
7

For what value of a does (1/9)a+1=81a+1•27^2-a

Mathematics
1 answer:
Yanka [14]3 years ago
8 0

Answer:19

Step-by-step explanation:

again add den mutiply subtaract

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Rewrite, using the distributive property. -3(20 + -29d) = [?] + [ ]d​
tiny-mole [99]

Answer:

-60+87d

     or

87d-60

Step-by-step explanation:

-3(20+-29d)=

-60+87d

3 0
3 years ago
Find the average rate of change for the given function from x = 1 to x = 2.
Akimi4 [234]

Answer:

d. 2

Step-by-step explanation:

The average rate of change is found from ...

... (f(x2) -f(x1))/(x2 -x1) = (5 - 3)/(2 -1) = 2/1 = 2

3 0
3 years ago
Please answer correctly thank you!
Nina [5.8K]

If you rotate the triangle so that the 6 is on the bottom, the two sides are both 6.2.

Because the two sides are equal the two angles at the bottom would also be equal. One is given as 61 degrees, so the other bottom angle is also 61 degrees.

The three inside angles of a triangle need to equal 180, so X would equal 180 minus the two bottom angles.

X = 180 - 61 - 61 = 58 degrees.

5 0
3 years ago
A survey is being planned to determine the mean amount of time corporation executives watch television. a pilot survey indicated
Natali [406]
Missing question: How many executives should be surveyed?

Solution:
Mean = 13 hours
SD = 3 hours
Confidence level = 95%

Mean viewing time within a quarter of an hour = 0.25 = 1.96*3/sqrt (N)

Where N = Sample population

N = {(1.96*3)/0.25}^2 = 553.19 ≈ 554

Therefore, 554 executives should be surveyed to yield such results.
5 0
3 years ago
What is the area of the object above?
stepan [7]

Answer:

Option C

Step-by-step explanation:

You need to begin by separating the shape into two distinct rectangles. The larger one has dimensions 15 cm * 8cm, while the smaller one has dimensions 7cm * 5cm. Adding these together, you get 15*8+7*5=155 square centimeters, or option C. Hope this helps!

6 0
3 years ago
Read 2 more answers
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