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Zielflug [23.3K]
3 years ago
6

If he simplifies the expression, which statements are true about the parts of the simplified expression? Check all that apply. 3

x + x + 5 – 2x
Mathematics
1 answer:
frutty [35]3 years ago
6 0
<span>3x + x + 5 – 2x =

= 3x + x - 2x + 5

= 2x + 5
</span>
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What value or values of x satisfy 2|x+5.3|=4.2
exis [7]
We have, /x+5.3/ = 2.1;
Then, x + 5.3 = 2.1 or  x + 5.3 = -2.1;
x = 2.1 - 5.3; x = -3.2;
x = -2.1-5.3; x = -7.4;
The correct answer is c.
4 0
2 years ago
Read 2 more answers
David is buying 3 books in a trilogy set for $24.81. He will save $6.69 by buying the trilogy set instead of buying individual b
Ainat [17]

Answer:

Cost of each individual book = $10.5

Step-by-step explanation:

Given:

Cost of 3 book set = $24.81

Amount save = $6.69

Find:

Cost of each individual book

Computation:

Assume:

Cost of each individual book = a

Total cost = 3a

So,

Total cost = $24.81 + $6.69

Total cost = $31.5

So,

3a = $31.5

a = $10.5

Cost of each individual book = $10.5

4 0
2 years ago
I’m confused on this one
Alenkinab [10]

So remember that the area of a trapezoid is A=\frac{b_1+b_2}{2}h , with b = bases and h = height. Before we can do the equation, however, we have to find the height. Using the right triangle, we can use the pythagorean theorem, which is leg^2+leg^2=hypotenuse^2 .

Since we know that the hypotenuse is 13 and one of the legs is 12, we can solve for the other leg. Our equation will look like this: x^2+12^2=13^2

Firstly, solve the exponents: x^2+144=169

Next, subtract 144 on both sides: x^2=25

Next, square root both sides, and your height will be: x = 5

Now that we know both the height, 5, and the bases, 30 and 40, we can solve for the area of the trapezoid. Our equation will look like this: A=\frac{30+40}{2}*5

Firstly, combine everything on the numerator: A=\frac{70}{2}*5

Next, divide the fraction: A=35*5

Next, multiply, and your answer will be A = 175 un^2.

3 0
3 years ago
Worth 10pts!!! Can someone help?
gulaghasi [49]

Answer:

-4

Step-by-step explanation:

The average rate of change of the interval [a,b] is (f(b)−f(a)) / (b−a)

Replacing a=−5, b=4, f(x)=−x^2−5x+12.

 (f(b)−f(a))/(b−a) =12−5x4− 4^2 − (12−5 x(−5)−(−5)^2)/ (4−(−5))= −4.

3 0
2 years ago
Which answer is not a main function of the skin?
Iteru [2.4K]

Answer:

First you choose a wrong section, second, the answer is: helps the body move.

7 0
3 years ago
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