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Luba_88 [7]
3 years ago
6

Making Sense of Slope - Item 32544

Mathematics
1 answer:
Alexeev081 [22]3 years ago
8 0

Answer:

the train track is straight

Step-by-step explanation:

i had that too

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Please Help Me With All Four ​
svetlana [45]

Answer:

answer below

Step-by-step explanation:

a is: 0.8

b is : 2

c is: 5

d is: 12.5

6 0
3 years ago
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15x^2 + 41x + 28 <br><br>STEP BY STEP ANSWER PLSSS​
maria [59]

Answer:

(3x+4)(5x+7)

Step-by-step explanation:

15x^2 +41x+28

Factor the expression by grouping. First, the expression needs to be rewritten as 15x^2 +ax+bx+28. To find a and b, set up a system to be solved.

a+b=41

ab=15×28=420

Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 420.

1,420

2,210

3,140

4,105

5,84

6,70

7,60

10,42

12,35

14,30

15,28

20,21

Calculate the sum for each pair.

1+420=421

2+210=212

3+140=143

4+105=109

5+84=89

6+70=76

7+60=67

10+42=52

12+35=47

14+30=44

15+28=43

20+21=41

The solution is the pair that gives sum 41.

a=20

b=21

Rewrite 15x^2 +41x+28 as (15x^2 +20x)+(21x+28).

(15x^2 +20x)+(21x+28)

Factor out 5x in the first and 7 in the second group.

5x(3x+4)+7(3x+4)

Factor out common term 3x+4 by using distributive property.

(3x+4)(5x+7)

7 0
3 years ago
Read 2 more answers
Combine like terms to create an equivalent expression.<br> -5.8c+4.2-3.1+1.4c−5.8c+4.2−3.1+1.4c
nordsb [41]

Answer:

Step-by-step explanation:

-11.6+8.4-15.5+2.8

8 0
3 years ago
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The arena has come to an agreement with the Sleaford Rockers to pay them according to this formula: b = tp- ( s + 2,000)
Anna35 [415]

if I am not mistaken your answer is 92,000. I hope this helps you good luck with l=your mathematics.

7 0
3 years ago
What is the square root of 78
Pavel [41]
The square root of 78 is an irrational number, so the exact number
can't be written down, no matter how long you make the decimal.

If I say it's  8.8318, then my answer is too big, but only by about 0.0004 percent.
8 0
3 years ago
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