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sammy [17]
2 years ago
8

Please help I'll mark brainliest ​

Mathematics
1 answer:
Anon25 [30]2 years ago
3 0

Answer:

32

Step-by-step explanation:

Add up all the numbers and then divide by how many numbers there are.

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I tried this few times can i get some help
mihalych1998 [28]

Answer:

Y=4 X= -6 or (-6,4)

Step-by-step explanation:

Okay so

3x+10y=22

-3x-8y=-14

  1. basically, it's like one big equation. First, subtract 3x from -3x which cancels out and gives us 0
  2. 10y minus 8y gives us 2y.
  3. 22 minus 14 gives us 8

3x+10y=22

<u>-3x-8y=-14</u>

0+2y=8

Now that we have this, we can solve for y. in order to do this, we have to divide both sides by 2.

\frac{2y}{2}  =  \frac{8}{2}

From here we know that y=4 because the 2s cancel out leaving y and 8 divided by 2 is 4.

y= 4

Now we can fill in. You can pick any equation for this but I'm going to chose the first one.

3x+10y=22

we can fill in 4 for y

3x+10(4)=22

3x+40=22

Next we are going to subtract 40 on both sides.

3x+40=22

-40 -40

3x= -18

Next, we're going to divide -18 by 3.

\frac{3x}{3}  =  \frac{  - 18}{3}

The 3s cancel out leaving us x. -18 divided by 3 is -6.

x= -6

Hope this helped!! :)

6 0
3 years ago
45% of what number is 17.1?<br> Please help <br> 20 points
vitfil [10]

45% × ? = 17.1

17.1 ÷ 45% =

17.1 ÷ (45 ÷ 100) =

(100 × 17.1) ÷ 45 =

1,710 ÷ 45 =

38;

so 45% of 38 = 17.1

7 0
3 years ago
Read 2 more answers
Evaluate x-2y when x=3,y=-3
adelina 88 [10]

Answer: 9

Step-by-step explanation:

3-2x-3

2x-3=-6

3--6=3+6=9

8 0
3 years ago
Read 2 more answers
The value of the 7 in 0.076 is 1/10 the value of the 7 in 2.79
lesantik [10]

Answer:

true

Step-by-step explanation:

the second 7 is in the tenth place and the first 7 is in the hundredth place, which is 1/10 the tenth place

3 0
2 years ago
Read 2 more answers
Which expression equals 6 when a = 5 and b = 1/3? Circle all that apply.
Troyanec [42]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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