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disa [49]
3 years ago
13

Evaluate. (-2 1/4) to the second power •khan academy •10 points

Mathematics
2 answers:
san4es73 [151]3 years ago
8 0

Answer:

5.0625

Step-by-step explanation:

just multiply it by itself

azamat3 years ago
6 0
The answer is 5.0625
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Solve these equations.<br> |x-7|=x-7
Cloud [144]

Answer:

x ≥ 7

Step-by-step explanation:

|x - 7| = x - 7

A. For each absolute, find the intervals

x - 7 ≥ 0     x - 7 < 0

     x ≥ 7           x < 7

If x ≥ 7, |x - 7| = x - 7 > 0.

If x < 7, |x - 7| = x - 7 < 0. No solution.

B. Solve for x < 7

Rewrite |x - 7| = x - 7 as

+(x - 7) = x - 7

      x - 7 = x - 7

-x + 14 = x

        14 = 2x

          x = 7

7 ≮7. No solution

C. Solve for x ≥ 7

Rewrite |x - 7| = x - 7 as

+(x - 7) = x - 7

      x - 7 = x - 7

True for all x.

D. Merge overlapping intervals

No solution or x ≥ 7

⇒ x ≥ 7

The diagram below shows that the graphs of y = |x - 7| (blue) and of y = x - 7 (dashed red) coincide only when x ≥ 7.

6 0
3 years ago
Samantha measured two of the angles in PQR and found that they had measures of 65° and 70°. Then, she measured two of the angles
Vlad [161]
The two triangles are similar.

The angles of a triangle sum to 180°.  Using the known angles in the first triangle, we find the missing angle measure:
180-(65+70) = 180-135 = 45

We do the same for the second triangle:
180-(65+45) = 180 - 110 = 70

Any two triangles that have all 3 angles congruent is similar by AAA.
6 0
4 years ago
Read 2 more answers
What are the x-intercepts of the graph of the quadratic function f(x) = 3(x − 1)(x + 3)?
creativ13 [48]

Answer:

-3, 1

Step-by-step explanation:

f(x) = 3(x − 1)(x + 3)

To find the x intercepts, set the equation equal to zero

0 = 3(x − 1)(x + 3)

Using the zero product property

x-1 = 0     x+3 =0

x=1            x=-3

6 0
4 years ago
Read 2 more answers
A doctor visits a patient in morning rounds. In how many different ways can the doctor visit 5 patients during morning rounds
LuckyWell [14K]
10 times because 5 times 2 is 10
4 0
4 years ago
Which graph shows the asymptotes of the function f(x) = 4x-8/2x+3
vova2212 [387]

Answer:

D. is the answer to your question

7 0
2 years ago
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