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solong [7]
3 years ago
6

“find the measure of angle A” whats the answer for both of them?

Mathematics
1 answer:
enyata [817]3 years ago
5 0

Answer:

  255) 36°

  257) 30°

Step-by-step explanation:

The sum of the angle measures in a triangle is 180°.

__

<h3>255)</h3>

(x +43) +(x +77) +74 = 180

2x = -14 . . . . . . . . . . . subtract 194

x = -7

∠A = -7 +43 = 36°

__

<h3>257)</h3>

5x +(3x +2) +130 = 180

8x = 48 . . . . . . . . . . . . . . subtract 132

x = 6

∠A = 5·6 = 30°

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Select the correct answer.
jenyasd209 [6]

The expression which represents the other factor, or factors, of the given polynomial is option (C) (2x-1)(x+1)

A cubic equation in algebra is a one-variable equation of the form ax3+bx2+cx+d=0 where an is nonzero. The roots of the cubic function defined by the left side of this equation are the solutions to this equation.

Given expression 2x³-3x²-3x+2 whose one of factor is (x-2)

We have to find second factor of given equation

First we will be rational root theorem to given expression so will get following expression:

\left(x+1\right)\frac{2x^3-3x^2-3x+2}{x+1}

So one factor is (x-1) and now simplifying \frac{2x^3-3x^2-3x+2}{x+1}  we get              2x² - 5x +2 and the factor of 2x² - 5x +2 will be (2x-1)(x-2)

Hence the expression which represents the other factor, or factors, of the given polynomial is option (C) (2x-1)(x+1)

Learn more about Polynomial here:

brainly.com/question/4142886

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4 0
2 years ago
Three percent of the caterpillars metamorphosed into butterflies. If Ramona could count 120 butterflies, how many caterpillars h
Harman [31]
The answer to your problem would be 400 because to find the answer you need to multiply 120 by .3 to get the answer because 3 % means per 100 and that is why you make it .3 hope i help.
3 0
3 years ago
Solve the proportion for x.
BabaBlast [244]
The answer for the question is x=1
3 0
3 years ago
What is the simplified form of the equation 4/5n - 1/5 = 2/5n ?
Whitepunk [10]
To answer the given above, multiply the whole equation with least common multiple of the denominators which is 5n. Shown below, 
 
                                           (4/5n - 1/5 = 2/5n) x 5n

                                                4 - 1(n) = 2

                                                  -n = -2, n = 2

The answer is not among the choices, it could have been letter A except that the constant in A is negative. 


3 0
3 years ago
Will give brainlisted whoever is correct first. please hurry.
kipiarov [429]

Answer:

32.33 <= m

Step-by-step explanation:

Since we are dealing with below sea level our initial starting point and max level will both be negative values, while our descending rate will also be negative because we are going down. Using the values provided we can create the following inequality...

-400 <= -12m - 12

Now we can solve the inequality to find the max number of minutes that the submarine can descend.

-400 <= -12m - 12   ... add 12 on both sides

-388 <= -12m   ... divide both sides by -12

32.33 <= m

3 0
2 years ago
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