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Greeley [361]
3 years ago
5

Which first step for solving the given system using substitution results in an equation without fractions? Solve for x in the fi

rst equation. Solve for y in the first equation. Solve for x in the second equation. Solve for y in the second equation.
Mathematics
2 answers:
AfilCa [17]3 years ago
7 0

Answer:

b

Step-by-step explanation:

edit:

the one after that is b

A= 1

B= 2

C= below

lianna [129]3 years ago
5 0

Answer:

solve for x in the second equation is correct

Step-by-step explanation:

Here is the complete question

Which first step for solving the given system using substitution results in an equation without fractions?

(2x+6y=7

(6x + 18y = 24.... 2

Solve for x in the first equation,

Solve for y in the first equation,

Solve for x in the second equation

The best equation to she will be equation 2 since all the coefficients are end numbers

Let us make x t subject f the formula from equation 2;

From 2: 6x+18y = 24

Subtract 18y from both sides

6x+18y-18y = 24-18y

6x = 24-18y

Divide through by 6

6x/6 = 24/6 - 18y/6

x = 4-3y.

You can see that the resulting expression of x is not a fraction. Hence solve for x in the second equation is correct

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the total cost of 4 pens and 7 mechanical pencials is 13.25 the cost of each penical is 75cent use the arithmetic to find the co
9966 [12]

Answer:

$2 per pen

Step-by-step explanation:

mechanical pencils: 5.25

all pens: 8

5.25+8= $13.25

:)

4 0
3 years ago
A rubber ball is dropped from a height of 50 feet. Assume that each bounce of the ball is vertical
Julli [10]

Answer:

You left out a critical piece of information in the question.

"reaches a height of of the maximum height"

Step-by-step explanation:

4 0
3 years ago
Solve for w, simplify your answer as much as possible
Akimi4 [234]

Answer:

W=3

Step-by-step explanation:

(6w + 4w)/48=5/8(taking lcm)

6w+4w=5/8*48

10w=30

W=3

Thanks for putting qsn, makes me remember this againa

6 0
3 years ago
Which number line shows the correct placement of 20%, 1/3, and 2/3?
BigorU [14]

Answer with Step-by-step explanation:

We are given that

20%

When we change percent into fraction we will divide the percent by 100

\frac{20}{100}=\frac{1}{5}

\frac{1}{3}

\frac{2}{3}

We have to find the line which shows the correct placement of given numbers.

Lcm(3,5)=15

\frac{1\times 3}{5\times 3}=\frac{3}{15}

\frac{1\times 5}{3\times 5}=\frac{5}{15}

\frac{2\times 5}{3\times 5}=\frac{10}{15}

7 0
3 years ago
Jasmine borrowed $15,000 for 8 years and she paid $6,600 in interest. What was the interest rate for Jasmine's loan?
weeeeeb [17]

Answer:

5.5%

Step-by-step explanation:

To find the interest rate, use the equation:  I = prt

I = Interest = $6,600

p = principal = $15,000

r = rate = unknown

t = time = 8 years


Now plug the numbers into the equation.

6,600 = 15,000 * r * 8

6,600 = 120,000 * r


Now isolate the variable by dividing both sides of the equation by 120,000.

0.055 = r


Now change the rate to a percent by moving the decimal point 2 digits to the right.

5.5% = r   OR   r = 5.5%

4 0
3 years ago
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