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tiny-mole [99]
3 years ago
15

Find the sum. (13x2 + 5x) + 8x2 =

Mathematics
1 answer:
Julli [10]3 years ago
4 0
The sum is the total of the given values being added.
Given the expressions above, to add them, you just have to add the numbers with the same terms. 13x2 and 8x2 have the same terms which is x2, therefore, you can add both and the result is 21x^2 then just copy 5x so the sum would be 21x2 + 5x. Hope this answer helps.
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PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!
amid [387]

Answer:

0.44

Step-by-step explanation:

This is a right angled triangle, so it yields:

                                             \cos \angle V = \frac{adjacent}{hypotenuse}

The value of <em>adjacent </em>is 39.

We will use the Pythagorean rule to obtain the length of hypotenuse:

                                         hypotenuse^2 = 39^2 + 80^2\\hypotenuse^2 = 1521 + 6400\\hypotenuse^2 = 7921\\hypotenuse = \sqrt{7921}\\hypotenuse = 89

Now we can insert that into \cos \angle V:

\cos \angle V = \frac{39}{89} =0.44

8 0
3 years ago
PLEASE help me with this question! This is really urgent! No nonsense answers please.
stepan [7]

Answer:

The last answer choice: Phillip will lose (1/2) of his points in his next crash.

Step-by-step explanation:

For every crash, Phillips points will continue to reduce by (1/2) the amount that he currently has.  That means after 1 crash, he will 5,000 points left.  After 2 crashes, he will have 2,500 points left.  After 3 crashes, he will have 1250 points left.  After 4 crashes, he will have 625 points left, and so on like that.

6 0
3 years ago
A plumber charges $15 for a service call plus $20 per hour of service. Write an equation in slope-intercept form for the cost, y
artcher [175]

Answer:

Y=20x+15 & 175 dollars

Step-by-step explanation:

The word problems says $20 per hour, so that means 20 times the amount of hours. If yo multiply 20 times 8 you get 160. Add 15 to 160, you end up with $175.

6 0
3 years ago
7 2/15 + 5 2/3 +9 13/15
crimeas [40]

21+

15

2

+

3

2

+

15

13

LCD = 1515

21+

15

2

+

3×5

2×5

+

15

13

21+

15

2+10+13

21+1

15

10

22

15

10

15

10

3

2

22

3

2

done

the answer of this question is last one

4 0
2 years ago
If f(x)=x+8 and g(x)=-4x-3 find (f+g)(x)
nydimaria [60]

Answer:

for this case we have the following functions:

f (x) = x + 8

g (x) = -4x - 3

Subtracting the functions we have:

(f - g) (x) = f (x) - g (x)

(f - g) (x) = (x + 8) - (-4x - 3)

Rewriting:

(f - g) (x) = x + 8 + 4x + 3

(f - g) (x) = 5x + 11

Answer:

D. (f - g) (x) = 5x + 11

7 0
3 years ago
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