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Vlada [557]
3 years ago
6

Two true or false :)

Mathematics
1 answer:
asambeis [7]3 years ago
4 0
1. false because they have the same slope and y-intercept so they have infinite number of solutions
2. true
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NEED HELP ASAP!!!!!
Law Incorporation [45]

Answer:the length 7

Step-by-step explanation:each one is times 3 6x3 8x3 3x7=21

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1 year ago
The sum of 3 consecutive numbers is 27 what is the smallest number?
grandymaker [24]

Answer:

8

Step-by-step explanation:

8 plus 9 plus 10 equals 27. so 8 is the smallest.

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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

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5,84

6,70

7,60

10,42

12,35

14,30

15,28

20,21

Calculate the sum for each pair.

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2+210=212

3+140=143

4+105=109

5+84=89

6+70=76

7+60=67

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12+35=47

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The solution is the pair that gives sum 41.

a=20

b=21

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

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

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3 years ago
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tatuchka [14]

Answer:

The answer is D

Step-by-step explanation:

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3 years ago
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The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h. Solve for a
den301095 [7]

Answer:

a=\frac{2A}{h}-b

Step-by-step explanation:

we know that

The formula to calculate the area for a trapezoid is equal to

A=\frac{1}{2}(a+b)h

where

a and b are the parallel bases

h is the height of trapezoid

A is the area

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That means ----> isolate the variable a

Multiply by 2 both sides to remove the fraction in the right side

2A=(a+b)h

Divide by h both sides

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Subtract b both sides

\frac{2A}{h}-b=a

Rewrite

a=\frac{2A}{h}-b

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