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MissTica
4 years ago
14

Write an expression that can be used to find 4 *275 using mental math and properties of numbers.

Mathematics
1 answer:
Nadya [2.5K]4 years ago
8 0
275+275+275+2751=1100
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In the diagram of right triangle ABC shown below, AB = 14 and AC = 9. What is the measure of angle A to the nearest degree?
olga_2 [115]

This question is incomplete because it lacks the diagram of the right angled triangle. Find attached to this answer the diagram of the right angle triangle.

Answer:

d-50

Step-by-step explanation:

Looking at the attached diagram, the only way to solve for this is the use of the trigonometric function. The trigonometric function to be used is the cosine function.

From the diagram, we are given

Hypotenuse = AB = 14

Adjacent = AC = 9

The measure of angle A to the nearest degree is calculated as:

cos θ = Adjacent / Hypothenuse

cos θ = 9/14

θ = cos -¹ (9/14) or arccos(9/14)

θ = 49.994799115°

To the nearest degree = 50°

Therefore,the measure of angle A to the nearest degree = 50°

7 0
3 years ago
7 times a number is 8 less than the square of that number. Find the negative solution.
charle [14.2K]

Answer:

  -1

Step-by-step explanation:

The required relation is ...

  7n = n^2 -8

  0 = n^2 -7n -8 . . . . put in standard form

  0 = (n -8)(n +1) . . . . factor

Solutions are n=8 and n=-1.

The negative solution is -1.

7 0
3 years ago
write two different fraction names for the dot on the number line. you may use halves, thirds,fourths,fifths,sixth eighths,or te
tino4ka555 [31]
4 the first one it would be 1/5 or 2/10 and the second one would be 4/5 or 12/15 Ana the third one would be 3/or 1/2
3 0
3 years ago
Bank A: Monthly fee of $4.95 or no fee if minimum balance is $500 or greater.
Crazy boy [7]

Answer:

A

Step-by-step explanation:

3 0
4 years ago
Find the value of each variable
Klio2033 [76]

Answer:

m∠P = m∠Q = m∠R = 60º

Step-by-step explanation:

Because each of the sides are congruent, the angles are congruent. A triangle must add up to 180º, so when you divide 180 by 3, you get 60. Therefore, each angle is 60º.

4 0
3 years ago
Read 2 more answers
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