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Ksju [112]
2 years ago
15

7. Susan spent 30% of the money she earned mowing lawns last summer. If Susan spent $51, what was the total

Mathematics
1 answer:
KatRina [158]2 years ago
7 0

Answer:

$170

Step-by-step explanation:

30% of the money was equal to 51

so:

\frac{30}{100}  =  \frac{51}{x}  \\  \\ x =  \frac{5100}{30}  =  \frac{510}{3}  = 170

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pychu [463]
I think the answer would be B
5 0
3 years ago
Describe and correct the error in writing an equation of the line shown
Rudiy27

Answer:

y  = -\frac{3}{5}x+4

Step-by-step explanation:

Given:

(x_1,y_1) = (0,4)

(x_2,y_2) = (5,1)

The attachment completes the question

From the attachment, the slope of the line was calculated as:

m = \frac{1-4}{0-5}

This step is inaccurate because the slope of a line is calculated using

m = \frac{y_2-y_1}{x_2-x_1}

Which gives

m = \frac{1-4}{5-0}

m = \frac{-3}{5}

m = -\frac{3}{5}

The line equation is then calculated using:

y -y_1 = m(x - x_1)

Substitute values for m, x1 and y1

y - 4 = -\frac{3}{5}(x - 0)

y - 4 = -\frac{3}{5}(x)

Open bracket

y - 4 = -\frac{3}{5}x

Make y the subject

y  = -\frac{3}{5}x+4

6 0
2 years ago
Maria used one bag of flour. She baked
adell [148]

Answer:

48 pounds

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How many one thirds are in three fifths
drek231 [11]
3/5 divided by 1/3 is 9/5 or 1 4/5
Therefore the answer is 1 and 4/5
7 0
3 years ago
How to use substitution to solve system of equations
svlad2 [7]

Answer: See explanation.

Step-by-step explanation:

Let's assume that you have a System of two equations. You can solve this System using the Substitution Method.

In order to use that method to solve the System of equations, you can follow the steps shown below:

Step 1: You must choose one of the equations of the system and solve for one of the variables. Let's call this new equation "Equation A"

Step 2: Then you must substitute"Equation A" into the other equation.

Step 3: Now you must solve for the other variable in order to find its value.

Step 4: Finally, you need to substitute the value of the variable obtained in the previous step, into the "Equation A" and then evaluate in order to find the value of the other varibale.

(Note: You can also substitute the value of the variable calculated in Step 3 into any original equation and solve for the other variable to find its value).

4 0
2 years ago
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