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Rus_ich [418]
3 years ago
10

-7x – 4y = 11 7x + 4y = 20

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
7 0

9514 1404 393

Answer:

  no solution

Step-by-step explanation:

Adding the two equations gives you ...

  (-7x -4y) +(7x +4y) = (11) +(20)

  0 = 31 . . . . . . false

No values of the variables will make this equation true. There is no solution.

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10.35035 TVs were manufactured by a company. About 9000 TVs were sold during the
Art [367]

Answer:

26035 assuming that it was question 10 and saying 35035 tvs were made not that there were 10.35035 tvs made

Step-by-step explanation:

8 0
3 years ago
Find the circumference of a circle with a radius of 18.59 inches to the nearest tenth of an inch.
____ [38]

Answer:

116.7 inches

Step-by-step explanation:

C=2πr(radius)

2×8.59=37.18

37.18×3.14=116.745

6 0
3 years ago
This one too<br> Solve for x<br> z=xy
ki77a [65]

x=z/y divide by y on both sides


6 0
3 years ago
Read 2 more answers
Which equation shows an example of the associative property of addition?
Nat2105 [25]

The associative property states that we can regroup the terms of an expression and obtain the same result.

We have then:

a + (b + c) = (a + b) + c

The expression that complies with this property is given by:

(-4 + i) + 4i = -4 + (i + 4i)

Answer:

An equation that shows an example of the associative property of addition is:

a. (- 4 + i) + 4i = -4 + (i + 4i)

6 0
3 years ago
Read 2 more answers
5x + 3y = 41<br> 2x + 3y = 20<br> show me step by steps how to do this
kompoz [17]

Answer:

x=7 and y=2

Step-by-step explanation:

In this case, you want to use elimination

1. multiply the second equation by -1

       5x + 3y = 41

       2x + 3y = 20

turns into

       5x + 3y = 41

       -2x + 3y = 20

2. combine the equations

       3x=21

3. solve for x

3x=21

3x/3=21/3

x=7

4. Now you want to plug x back into the original equation

5x+3y=41

turns into

5(7)+3y=41

5. Then solve for y

35+3y=41

35+3y-35=41-35

3y=6

3y/3=6/3

y=2

6. results

x=7 and y=2

5 0
2 years ago
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