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3 years ago

Do all 4 for 50 points i

Mathematics

2 answers:

poizon [28]3 years ago

7 0

Answer:

Question 17.=-4

Question 18.=4

Question 19.=5

Question 20.=5

Step-by-step explanation:

$hope \: this \: helps \: you....$

lara31 [8.8K]3 years ago

3 0

Answer:

1) -9

2) 10

3) -2

4) 9

Step-by-step explanation:

Simple mathematics

Note: -(- is a plus symbol, it also makes a + symbol as well...

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Joseph has $22 in his bank account and deposits $11.50 each week. At the same time Annie has $218 but i

Juliette [100K]

Joseph: 11.5x+22
Annie: 13x+218

7 0

3 years ago

Read 2 more answers

I need so.e help with this

Flauer [41]

Answer:

(3,7) is not a solution

Step-by-step explanation:

You fill in the values x=3 and y=7 in both equations and see if you end up with something that is true.

-5·3 - 2·7 = 23 is not true, because it simplifies to -29 = 23

no need to look further, but if you would, the second equation is also false:

3 + 4·7 = -19 is also not true.

The real solution by the way is (-3, -4).

3 0

3 years ago

Square root of -24 to the nearest integer

Leya [2.2K]

The answer is 5

explanation: sq rt of -24 equals 4.8

6 0

3 years ago

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The width of a dining room floor in a scale drawing is 6in. The actual width is 30 ft. What is the scale of the floor plan?

sasho [114]

Answer:

Scale = 5ft/in

Step-by-step explanation:

Given

Scale Measurement = 6in.

Actual Width = 30ft

Required

Scale Ratio.

The scale ratio can be calculated as thus:

Scale Ratio = Actual Measurements ÷ Scale Measurements

Scale Ratio = 30ft ÷ 6in

Scale Ratio = 30ft/6in

Simplify to lowest terms

Scale Ratio = 5 ft/1 in

Scale Ratio = 5ft/in

This can also be represented as follows;

Scale Ratio = 5ft : 1in

This means that 5 ft on the actual measurements is represented by 1inch on the scale.

6 0

3 years ago

Factor completely 2x^2 − 2x − 40.

zubka84 [21]

Step-by-step explanation:

Hey there!

Given;

$= 2 {x}^{2} - 2x - 40$

Solve it by using mid-term factorization.

$= 2 {x}^{2} - 2x - 40$

$= 2 {x}^{2} - (10 - 8)x - 40$

$= 2 {x}^{2} - 10x + 8x - 40$

Take common and simplify them to get answer.

$2x(x - 5) + 8(x - 5)$

$= (2x + 8)(x - 5)$

$= 2(x + 4)(x - 5)$

Therefore the answer is option D.

Hope it helps..

3 0

4 years ago