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ch4aika [34]
3 years ago
13

Natalie made more than $57 washing cars. She charged $7.50 a car and earned $22 in tips. What is the minimum number of cars that

she washed?
Mathematics
1 answer:
Ivahew [28]3 years ago
7 0

Answer:

4

Step-by-step explanation:

57 = 7.50x + 22

subtract 22 from both sides

35 = 7.50x

divide both sides by 7.50

4.66666666667 = x

since you cant have .666667 of a car, you would round it down to 4

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Nikolay [14]

Answer:

The answer is the letter B.

The first column represents the x-values, and the second row represents the y-values.

For that reason, if we have:

2x - 7y = -1

x + 3y = -5

Then, the matrix will be given by:

[ 2      -7

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[ -1

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So the correct option is the letter B.

3 0
3 years ago
Read 2 more answers
Tomas is a commercial real estate agent who earns a yearly salary of $82,500 and a 2.5% commission on his total sales. If Tomas
Nikitich [7]

Answer:

Step-by-step explanation:

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7 0
3 years ago
Could 10.3cm 4.4cm and 8.3 cm be the side lengths of a triangle yes or no
evablogger [386]

Answer:

No

Step-by-step explanation:

As you probably know, triangles have 3 sides. The longest side is called the hypotenuse. In this case, the hypotenuse is 10.3. Now, you might or might not know the pythagorean theorem, which states that the <em>a² + b² =c ². </em>

In this case, we can say that 4.4 is <em>a </em>and 8.3 is <em>b. </em>Now if we square 4.4 and add it to 8.3 squared, we get 88.25. However, if you square 10.3, you get 106.09. Thus, the values cannot be this way. So, your answer is no.

3 0
3 years ago
Find the factors<br> 4x^2+9
Vlad [161]

Step-by-step explanation:

So 4x2+9 has no linear factors with Real coefficients. It is possible to factor it with Complex coefficients.

7 0
3 years ago
The 6 consecutive integers below add up to 447. x − 2 x − 1 x x + 1 x + 2 x + 3 what is the value of x ? f. 72 g. 73 h. 74 j. 75
IrinaVladis [17]
(x-2) + (x-1) + x + (x+1) + (x-2) + (x+3) = 447
6x + 3 = 447
6x = 447 - 3
6x = 444
x = 444/6
x = 74
3 0
3 years ago
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