2 years ago

I need help with these...

1 answer:

7 0

All you have to do is do the distributive property. So, for the first one you would do 5 times x which equals 5x and then you would do 5 times 4 which equals twenty. All you are left with is the addition sign. Your full equation now would be 5x+20

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Isolating a variable in two equations is easiest when one of them has a coefficient 1.

Tomtit [17]

Answer:

Option C.

Step-by-step explanation:

The given equations are

$3A-B=5$

$2A+3B=-4$

We need isolate one of the variables, such that it appears by itself on one side of the equation.

Isolating a variable in two equations is easiest when one of them has a coefficient 1.

In equation 1, coefficient of B is 1. So, we can easily isolate one of the variables.

The equation is

$3A-B=5$

Subtract 3A from both sides.

$-B=5-3A$

Multiply both sides by -1.

$B=3A-5$

Therefore, the correct option is C.

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3 years ago

Carmen wins $35 was in the contest. Tubes of her favorite brand of paint cost $4.80 each. Paint brushes cost $6.70 each. How man

Zanzabum

6.70 for paint brushes. for 2 is 6.70×2=$13.40

35-13.40=$21.60 left after 2 paint brushes

4.80×4=$19.20 for 4 tubes of paint

21.60-19.20=$2.40 left after 4 tubes of paint and 2 paint brushes

6 0

3 years ago

The top deck of a boat is 9.5 feet above the surface of a lake, while the bottom of the boat is 24 feet below the surface of the

ss7ja [257]

9.5 feet + 24 feet = 33.5 feet

Ans: 33.5 feet

4 0

3 years ago

48 cookies 25% increase

9966 [12]

Answer:

Step-by-step explanation:

48 multiplied by 25% = 48 multiplied by 0.25 = 12

48 plus the increase = 60

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2 years ago

A suit with an original price of $290 was marked down 33%. You have a coupon good for an additional 36% off. What is the final c

TiliK225 [7]

Answer:

$20.01

Step-by-step explanation:

x 69

------ × --------

290 100

69 = 33 + 36

multiply 290 ×69 then divide by 100 to find c

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2 years ago