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olasank [31]
3 years ago
13

Nicole sells T-shirts, t, for $7.50, and sells sweatshirts, s, for $15. She earns

Mathematics
2 answers:
Elodia [21]3 years ago
5 0

An equation that would represent the relationship between cost and revenue would be: 7.50t + 15s = 525

Hope this helps!! :)

user100 [1]3 years ago
4 0

7.50  + 15 = 525  is the equation

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Danica wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest
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She wants all her rows in 6 so she needs a number of cars divisible by 6 which the next one would be 24 so she needs 1 additional car
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3 years ago
What is the solution to the following system of equations?
adelina 88 [10]
-x^2 - 5x - 4 = -x^2 + 9x - 18
-5x - 9x = -18 + 4
-14x = -14
x = -14/-14
x = 1 <====

y = -x^2 - 5x - 4
y = (-1^2) - 5(1) - 4
y = 1 - 5 - 4
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8 0
3 years ago
An engineer needs to determine the distance across a river without swimming to the other side. The engineer notices a tree on th
nasty-shy [4]

Answer:

Step-by-step explanation:

The engineer can use a clinometer to measure the angle of elevation of the top of the tree. Let the height of the tree be represented by x, the she could determine the distance across the river, d, by applying the trigonometric function.

Tan θ = \frac{opposite}{adjacent}

           = \frac{x}{d}

the the distance, d = x ÷ Tan θ

Assume the angle of elevation of the top of the tree is 30^{o}, and the height of the tree is 10 m, then the distance, d, across the river would be;

d = \frac{10}{0.5774}

  = 17.3190

d = 17.32 m

The sketch to the explanation is attached to this answer for more clarification.

4 0
3 years ago
Figure A is a scale image of figure B. Figure A maps to figure B with a scale factor of 0.80. What is the value of x?
Ivan

Answer:

4

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to the given line and passes through the given point. Enter your answer in s
vagabundo [1.1K]

Answer:

y = -0.2x - 5.8

Step-by-step explanation:

If a line is given in the form y = mx + b, the "m" is the slope.

For the line given y = 5x, the slope is 5

The line that is perpendicular to this will have slope that is "negative reciprocal of that".

So, the perpendicular line will have slope of  -\frac{1}{5}

So, the Perpendicular Line will have equation:

y = -1/5x + b

Let's find b by replacing x with 6 and y with -7 [the point given]. So we have:

y=-\frac{1}{5}x+b\\-7=-\frac{1}{5}(6)+b\\-7=-\frac{6}{5}+b\\b=-7+\frac{6}{5}\\b=-5.8

So the equation of perpendicular line = y = -0.2x - 5.8

4 0
3 years ago
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