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Andrei [34K]
3 years ago
5

Simplify the expression (7x+1/2)+(6x-9 1/2)

Mathematics
1 answer:
monitta3 years ago
3 0
To make this easier to read, I'll be substituting 1/2 for .5; they mean the same thing, but it's less confusing to type it in its decimal form.
7x + .5 + 6x - 9.5
Combine like terms (x's can be added together, and so can reg. numbers)
(7x + 6x) + (.5 - 9.5)
13x - 9
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2) Which choice best represents:<br> Divide 8 by N<br> A. 8-N<br> B. N -8
Nataly_w [17]

Answer: A

Step-by-step explanation:

4 0
3 years ago
A triangle has an angle that measures 25. The other two angles are in a ratio of 11:20. What are the measures of those two angle
frozen [14]

Answer:

The measures of the two angles are 55 and 100 degrees.

Step-by-step explanation:

The three interior angles of a triangle always add up to 180.

So if one angle is 25 degrees

180 - 25 = 155

The two other angles must add up to 155.

If the ratio is 11:20

That means there are 31 equal parts between the two angles

So 155/31 =5

Whic means

11 x 5 = 55

20 x 5 = 100

The two missing angles are 55 and 100 degrees.

Hope this explanation helped you!

5 0
2 years ago
Determine if the function f(x) = 4√x − 3x satisfies the Mean Value Theorem on [4, 49]. If so, find all numbers c on the interval
Vedmedyk [2.9K]

Answer:

c

Step-by-step explanation:

The mean value theorem states that for a continuous and differentiable function on a interval there exists a number c from that interval, that

f'(c)=(f(b)-f(a))/(b-a)

First we must determine the endpoints:

f(49)=-119

f(4)=-4

We find the derivative of the function, f'(c)

f'(c)=3+2\sqrt{c}

Therefore:

3+2\sqrt{c}=((-119)-(-4))/((49)-(4))

Simplify:

3+2\sqrt{c}=-23/9

c=81/4

7 0
3 years ago
Someone help me with finding the similarity statement and ratios of the side lengths cuz idk if it’s similar
andreyandreev [35.5K]

When triangles are similar, ratios of corresponding side lengths are the same. The side lengths you know are CD, DU, VW, WU. (You also know CU, but you do not know the corresponding length VU.)

The ratios can be formed in any convenient way, but it is already clear that the triangles are not similar. CD = 73 is a prime number, and neither DU nor VW is a multiple of that. For example, ...

... CD/VW = 73/84 ≠ 48/55 = DU/WU

5 0
3 years ago
Which of the following represents a pair of proportional ratio or rate?
monitta

C is the answer . 81/3 = 27 and 54/2= 27

6 0
3 years ago
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