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ValentinkaMS [17]
2 years ago
8

at a hardware store, 5 gallons of paint and 5 paintbrushes cost $120, while 2 gallons of paint and 6 paintbrushes cost $64. Find

the cost of 1 paintbrush
Mathematics
1 answer:
Katyanochek1 [597]2 years ago
7 0
Well the answer is 9 for 1 paintbrush
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Order the fractions and decimals from least to greatest.
Dmitry [639]

Answer:

0.45, 0.95, 3, 4, 5, 10

Step-by-step explanation:

You would do the decimals first, then the whole numbers from how they would go on a number line 1-9

7 0
3 years ago
Evaluate f (x) = 2 x torx =-5.
Bingel [31]

Answer:

-10.

Step-by-step explanation:

f(x) = 2x, x = -5.

f(-5) = 2(-5)

= 2 * (-1) * 5

= 10 * (-1)

= -10.

Hope this helps!

4 0
3 years ago
Johanna wrote the system of equations. 4 x - 3 y = 1, 5 x + 4 y = 9. If the second equation is multiplied by 4, what should the
polet [3.4K]

Answer:

The first equation must be multiplied by -5 to eliminate x variable by addition

Step-by-step explanation:

4 x - 3 y = 1 (1)

5 x + 4 y = 9 (2)

If the second equation is multiplied by 4

5x+4y=9. ×4

We have,

20x+16y=36 (3)

The first equation should be multiplied by -5 to eliminate x variable by addition

4x-3y=1 × -5

We have

-20x+15y=-5 (4)

Add equation (3) and (4) to eliminate x variable

20x+16y=36

-20x+15y=-5

31y=31

Divide both sides by 31

y=1

Substitute y=1 into equation (1)

4 x - 3 y = 1

4x-3(1)=1

4x-3=1

4x=1+3

4x=4

Divide both sides by 4

x=1

4 0
3 years ago
Read 2 more answers
Mr. Romero is buying a cell phone that has a regular price of $649. The cell phone is on sale for 15% off the regular price. Wha
Dafna11 [192]

Answer:

15 \div 100 \times 649 = 97.35 \\ 649 - 97.35 = 551.65

therefore the new price is $551.65

6 0
2 years ago
Plz solve I’ve been stuck on how to start it and I just can’t
AleksAgata [21]

Answer:

x and y = 0

the question looks weird and almost wrong because when you subtract the equations, you are left with nothing

Step-by-step explanation:

Multiply the top equation by 3 to make the -x a -3x instead.

Then do the top equation - the bottom equation

At this point you should be left with x

7 0
3 years ago
Read 2 more answers
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