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rodikova [14]
4 years ago
14

What number should be added to -3 to get a sum of 7?

Mathematics
1 answer:
Dafna1 [17]4 years ago
7 0

Answer:

4 is the answer to the question

Step-by-step explanation:

-7 + 4 = - 3

You might be interested in
Solve the simultaneous equations
Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

  1. Elimination
  2. Substitution
  3. Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3

Putting y = 3 in equation 2

3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x =  6

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

7 0
3 years ago
ANSWER PLEASE!!!
Dmitry_Shevchenko [17]

Answer:

distributive property

Step-by-step explanation:

8 0
3 years ago
If 90 is 80% of a value, what is that value?
salantis [7]
90 = 0.8*w \\ w =  \frac{90}{0.8}  \\ w = 112.5
3 0
3 years ago
7. Sandra had a coupon for 20% off. It took off $60 from the total cost. What was the original price of the item? Proportion Sol
Liula [17]
I’m pretty sure it’s b tell me if I’m wrong tho~~
6 0
3 years ago
Tell me how to shade the area on the grid that shows 7/8x3/4
viva [34]
If the grid is an 8x8: 

To solve this we need to convert 3/4 into a fraction x/8 so that they have the same denominator.

To do this we can set a porportion and find a common denominator. 4 x 2 = 8 so the common denominator would be 8 and the rule would be x 2 so 4 x 2 = 8 and 3 x 2 = 6

So we get 7/8 and 6/8

From top to bottom shade 7 spaces in a row

From left to right shade 6 spaces in a row

Fill in the spaces in between to make a square

I hope this helps!
8 0
3 years ago
Read 2 more answers
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