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vova2212 [387]
3 years ago
7

suppose you go to a concert and purchase three identical t-shirts and a hat that hat cost $21 and you spend $60 an hour how much

does each t-shirt cost?
Mathematics
2 answers:
ra1l [238]3 years ago
8 0
60-21=39
39 divided by 3=13
each t-shirt cost $13.

to check:
13 times 3=39 
39+21=60

hope I helped :)

Anit [1.1K]3 years ago
4 0
Each shirt costs $13.
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Negative four times the sum of a number and 3 is at least 28, translate.
user100 [1]

Answer: -4 * (n+3) \geq 28

Step-by-step explanation:

Negative four -> -4

Times the sum of a number and 3 -> -4 * (n + 3)

Is at least 28 -> -4 * (n+3) \geq 28

5 0
3 years ago
The RideEm Bicycles factory can produce 100 bicycles in a day at a total cost of $10,900, and it can produce 120 bicycles in a d
Minchanka [31]

Answer:

c(x) = 40 (x) + $6,900

Step-by-step explanation:

According to the scenario, given data are as follows,

Total cost of 100 bicycles (x1) = $10,900

Total cost of 120 bicycles (x2) = $11,700

Let Number of bicycles = X

Than cost of X bicycles = c(X)

let, fixed cost be F and variables cost be V, than

c(X) = V(X) + F

So, we can calculate variable cost by using following method,

V = c(x2) - c(x1) ÷ ( x2 - x1)

= ( $11,700 - $10,900) ÷ ( 120 - 100)

= $800 ÷ 20

= $40

So, calculate fixed cast by putting value to equation,

$10,900 = ($40 ×100) + F

F = $10,900 - $4,000 = $6,900

So, For x number of bicycles, cost equation will be,

c(x) = 40 (x) + $6,900

4 0
3 years ago
Evaluate 3p+2q. when p=3 and <br> ————<br> 2<br> q=5
nataly862011 [7]

Answer:

the answer to this problem 19

3 0
2 years ago
8x + 20y = 20<br> 14x + 35y = k<br> For the above system of equations to be consistent, k must equal
Goshia [24]

Answer:

  35

Step-by-step explanation:

The equations will be "consistent" when they describe lines that are not parallel.

<h3>Slopes</h3>

The slope of a line whose equation is written in this form is the opposite of the ratio of the y-coefficient to the x-coefficient:

  line 1 slope = -8/20 = -2/5

  line 2 slope = -14/35 = -2/5

These lines have the same slope, so will be parallel unless they have the same y-intercept.

<h3>Y-intercept</h3>

The y-intercept of each line is the ratio of the constant to the y-coefficient:

  line 1 y-intercept = 20/20 = 1

  line 2 y-intercept = k/35

We want these lines to have the same y-intercept so that they are not inconsistent. This requires ...

  k/35 = 1

  k = 35

For the equations to be consistent, we must have k = 35.

__

<em>Additional comment</em>

Linear equations are generally categorized as "consistent" or "inconsistent," and "dependent" or "independent."

Equations are "inconsistent" if there are no values of the variables that satisfy all of the equations. They are "dependent" if they describe exactly the same relation between the variables. "Consistent" equations may be "dependent" (describing the same line, as here), or "independent" (describing lines with different slopes.)

7 0
2 years ago
I want to be a teacher some day and i know this question----------What is -15 -(-8)=? remember a negitive plus a negitive equals
irina [24]
Answer is -7 because -15+8=-7
8 0
3 years ago
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