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3 years ago

Can someone please help me with this

Mathematics

2 answers:

KatRina [158]3 years ago

7 0

Answer:

13)5m-10

14)8y+16

15)-3m-12

16)a²+3a

17)h²-2h

18)2m²+8m

19)-2z+16

20)-4x²+40x

21) 12x and 60

22)x and 4

Degger [83]3 years ago

7 0

13.5m-10
14.8y+16
15.-3m-12
16.a^2+3a
17.h^2-2h
18.2m^2+8m
19.-2z+16
20.-4x^2+40
21. sum 2x+46
product 60x
22 sum 2x+18
product20x

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3 years ago

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A triangle contains angles mesuring 28 degrees and 37 degrees. How many degrees is the third angle?

Orlov [11]

Answer:

115°

Step-by-step explanation:

We know that:

Angles ∠A and ∠B are 28° and 37°.

We don't know:

Angle ∠C's angle

So, we do this:

Add the 180°
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2 years ago

If three quarters of a number decreased by twenty is equal to eighty two, what is that number?

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A number is :

$x$

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Three quarters of it means :

$\frac{3}{4}x \\$

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Decrease by 20 means :

$\frac{3}{4}x - 20 \\$

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Equals to 82 means :

$\frac{3}{4}x - 20 = 82 \\$

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What is that number ?

x asked so we must solve the above equation for x.

Let's do it....

$\frac{3}{4}x - 20 = 82 \\$

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$\frac{3}{4}x = 82 + 20 \\$

$\frac{3}{4}x = 102 \\$

Multiply sides by 4

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3 years ago

Hello can you please help me posted picture of question

ollegr [7]

The correct option is (B) 4x^2 + 18x + 18

Explanation:
The area is given as:
(3+2x)(6+2x)

To find the polynomial just simplify it.
3(6+2x) + 2x(6+2x)

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3 years ago

-x+6y=15 and -2x-3y=0

abruzzese [7]

-x+6y=15

x = -15

y = 5/2

-2x-3y=0

x = 0

y - 0

8 0

2 years ago