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Elena-2011 [213]
4 years ago
8

When angles complementary,the sum of their mesures is 90 degrees. Two complementary angles have measures of 2x-10 degrees and 3x

-10 degrees. Find the measures of each angle.
Mathematics
1 answer:
kykrilka [37]4 years ago
4 0

Answer:

34 degrees and 56 degrees

Step-by-step explanation:

As the two given angles are complementary,

2x-10+3x-10=90

5x-20=90

5x=90+20=110

x=110/5=22

x=22

Now each angle

2x-10=2*22-10=34 degrees

and

3x-10=3*22-10= 56 degrees

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8.EE.1.2
Semenov [28]

Considering that the square root of 9 is of 81 and of 10 is of 100, we have that the expression that has a value between 9 and 10 is given by:

B.) √89

E.) \sqrt[3]{750}

F.) \sqrt[3]{999}

<h3>How the square root of a number is used to solve this question?</h3>

We suppose numbers n and m, with square roots given, respectively, by n² and m².

Then, the square roots of all numbers between n² and m² have values between n and m.

In this problem, the square roots are given by:

  • 9² = 81.
  • 10² = 100.

Hence, the square root of all values between 82 and 99 are values between 9 and 10, thus option B is correct.

As for the cubic root, we apply the same logic and have that:

  • 9³ = 729.
  • 10³ = 1000.

Hence options E and F are also correct, as the values between 730 and 999 have cubic roots between 9 and 10.

More can be learned about the value of a expression at brainly.com/question/25537936

#SPJ1

4 0
2 years ago
Which equation represents a parabola that has a focus of (0 0) and a directrix of y = 2
mel-nik [20]

ANSWER

x ^{2}  =  - 4(y - 1).

EXPLANATION

Since the parabola has the (0, 0) and the directrix at y=2.

The equation is of the form

{(x - h)}^{2}  =  - 4p(y - k)

where (h,k) is the vertex.

The vertex is half way between the directrix and the focus.

The vertex will be at (0,1)

and is the distance from the vertex to the focus which is 1.

{(x - 0)}^{2}  =  - 4(1)(y - 1)

x ^{2}  =  - 4(y - 1)

7 0
3 years ago
Please help me!!! ill give brainliest
BlackZzzverrR [31]
B

Graph b is the only graph showing a pair of parallel lines.
Graph A are perpendicular lines and the other two are graphs that intersect. Parallel lines do not intersect each other.
5 0
3 years ago
Which two operations are needed to write the expression that represent eight more than the product of a number and two
lakkis [162]
Addition and multiplication
hope this is correct and helps
6 0
3 years ago
Help me please I’m stuck
Anna35 [415]

Answer:

103

Step-by-step explanation:

There is 540 degrees total in a pentagon. To find the missing angle, you must subtract all the known angles from 540. 540-100-117-105-115=103

6 0
3 years ago
Read 2 more answers
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