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Blizzard [7]
2 years ago
5

Factor 20a + 45.............................................

Mathematics
2 answers:
faust18 [17]2 years ago
7 0

Answer: 5(4a+9)

Step-by-step explanation: 5(4a+9)

20a+45

Delvig [45]2 years ago
3 0

Answer:5(4a+9)

Step-by-step explanation:

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What is the answer?​
charle [14.2K]

Answer:

x = 20 but see below.

Step-by-step explanation:

Remark.

This is not well enough marked to know whether D = A or whether you have to do some algebra to find the relationship between A and D. So I will assume A = D and then I'll solve it so you have to manipulate A and D.

A = D

3x - 10 = 2x + 10                     Add 10 to both sides

3x - 10 + 10 = 2x + 10 + 10     Cancel

3x = 2x + 20                           Subtract 2x from both sides

3x-2x=2x-2x + 20

x = 20

A = E

If A = E then to find x you have to add 3 angles together.

E + D + 45 = 180                  Add the three angles of the triangle

E + D = 180 - 45                  Subtract  45 from both sides

E + D = 135                          Substitute for D and E

3x - 10 + 2x + 10 = 135        Combine like terms

5x = 135                              Divide by 5

x = 135 / 5

x = 27

Answer

I'd go with the first one.

5 0
3 years ago
The line passing through (-2,5) and (2,p) has a gradient of -1/2. <br><br> Fnd the value of p
makkiz [27]

Given:

The line passing through (-2,5) and (2,p) has a gradient of -\dfrac{1}{2}.

To find:

The value of p.

Solution:

If a line passes through two points, then the slope of the line is:

m=\dfrac{y_2-y_1}{x_2-x_1}

The line passing through (-2,5) and (2,p). So, the slope of the line is:

m=\dfrac{p-5}{2-(-2)}

m=\dfrac{p-5}{2+2}

m=\dfrac{p-5}{4}

It is given that the gradient or slope of the line is -\dfrac{1}{2}.

\dfrac{p-5}{4}=-\dfrac{1}{2}

On cross multiplication, we get

2(p-5)=-4(1)

2p-10=-4

2p=-4+10

2p=6

Divide both sides by 2.

p=3

Therefore, the value of p is 3.

4 0
3 years ago
You want to purchase a ticket to the movies. A ticket costs at least $12. You have $3. How much more money do you need to purcha
BaLLatris [955]

Answer:

I think the answer is$12 - $3 = $9

the amount u need is $9 to have the complete amount u need to purchase the ticket

6 0
2 years ago
Read 2 more answers
(5x2)x7?<br> What is the answer??????????????????????????????????????????????????????????????????
AlexFokin [52]

Answer:

70

Step-by-step explanation:

(5x2) x 7

(10) x 7 = 70

5 0
3 years ago
Add the following fractions and simplify if needed<br> 2/3 + 1/5 =
masha68 [24]

Answer:

13/15

Step-by-step explanation:

2/3 + 1/5

You first,

  1. Find the L. C. M, i hope u know the full name, if u don't, let me know in the comment section.
  2. the L. C. M is 15
  3. therefore it will be 10+3/15
  4. 13/15
5 0
2 years ago
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