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leva [86]
3 years ago
6

30% of the students in sixth grade have a pet. There are 130 students in the sixth grade how many of them have a dog as a pet?

Mathematics
1 answer:
Zigmanuir [339]3 years ago
3 0
39 students have a pet because 130 times .30 which represents thirty percent gives you the answer

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What is the formula for the area of a rectangle?
PtichkaEL [24]

Answer:

The area of a rectangle is length*width

Step-by-step explanation:

The answer is A

This is simple

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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.

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4+105=109

5+84=89

6+70=76

7+60=67

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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)

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3 years ago
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alukav5142 [94]

Step-by-step explanation:

The sum of the three angles in a triangle must be 180. Since this triangle has a right angle, we know that it is 90°, so the sum of the remaining two angles must be 90.

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(x + 28) + x = 90

2x + 28 = 90

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x = 31

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3 years ago
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There were 40 fingers total on the number of gloves Mrs. Edwards knitted. How many gloves did Mrs.Edward knit.
GarryVolchara [31]
40 ÷10 = 4

Mrs Edward knitted 4 pairs of gloves.
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PLS HELP ILL GIVE BRAINLEST <br> 1/4 ÷ 3/8<br> divide. i need it in fraction form for an answer
Advocard [28]

Answer:

answere=2/3

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