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Ber [7]
3 years ago
7

Daniel is enrolling for a test prep class. The expression below represents the hourly charges, including the cost for the materi

als. $30x + $65
1. The constant of the expression represents the ___ A. cost of materials
B. Cost per hour
C. Number of hours
2. and the coefficient of x represents the__ A. Cost per hour
B. cost of materials
C. number of hours
Mathematics
2 answers:
kkurt [141]3 years ago
7 0

Answer:

(1) The constant of the expression represents the cost of material .

Option (A) is correct .

(2)  The coefficient of x represents the cost per hour .

Option (A) is correct .

Step-by-step explanation:

As given the expression

Total cost of hourly wage including the cost for the material = $30x + $65

(1) The constant of the expression represents the cost of material .

Option (A) is correct .

(2)  The coefficient of x represents the cost per hour .

Option (A) is correct .


Phoenix [80]3 years ago
5 0
1. Cost per hour does not change (It will always be 30 dollars per hour)


2. The number of hours (the number of hours depends on the amount of time he stays there)

hope this helps
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10(x+1) = 56 - 2(x-1) what’s the equation
bixtya [17]

Answer:x=4

Step-by-step explanation:

To solve

10(x+1)=56-2(x-1)

Open the brackets

10x+10=56-2x+2

Collect like terms

10x+2x=56-10+2

12x=48

Divide through by 12

x=4

3 0
3 years ago
Read 2 more answers
MZRSK = x + 53, m KST = x + 109,<br> and mZRST = 156º<br><br><br> Find x.
Dahasolnce [82]

Answer:

-3 = x

Step-by-step explanation:

Since we are not given a midpoint, we use the Angle Addition Postulate:

156 = [x + 109] + [x + 53]

156 = 162 + 2x

-162 - 162

_______________

−6 = 2x

___ ___

2 2

−3 = x

[−3 + 53] + [−3 + 109] = 156

50 106

156 = 156 ☑

Therefore, -3 = xis a genuine statement.

I am joyous to assist you anytime.

4 0
3 years ago
Max and Sasha exercise a total of 20 hours each week. Max exercises 15 hours less than 4 times the
navik [9.2K]

Answer:

Max exercises 13 hours a week, and Sasha 7.

Step-by-step explanation:

To find the number of hours each of them exercises during the week, we solve the system of equations.

In the second equation:

x = 4y - 15

Replacing in the first equation:

x + y = 20

4y - 15 + y = 20

5y = 35

y = \frac{35}{5}

y = 7

So Sasha exercises 7 hours per week.

Max:

x + y = 20

x + 7 = 20

x = 13

Max exercises 13 hours a week.

6 0
3 years ago
Elimination method: ax+by=r, -bx+cy=s
Alex17521 [72]
\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]

Isolate x for ax+by=r

x= \frac{r-by}{a} ; a \neq 0

Subsititute x= \frac{r-by}{a}

-b \frac{r-by}{a} +cy=s

Isolate r for : -b \frac{r-by}{a}+cy=s

r=- \frac{as-acy-b^2y}{b} ; a \neq 0;b \neq 0

For x : \frac{r-by}{a}

Subsititute r = - \frac{as-acy-b^2y}{b}

x= -\frac{as-acy-b^2y}{b}/a

x =  \frac{cy-s}{b}

The solutions to the system of equations are:

r= -\frac{as-acy-b^2y}{b} and <span> x = \frac{cy-s}{b}
</span>
hope this helps!


3 0
3 years ago
The solution of [5x(4+6)-9]
Anna35 [415]

Answer:

41

Step-by-step explanation:

BIDMAS

[5 x (4 + 6) - 9]

Brackets first

4 + 6 = 10

[5 x (10) - 9]

Multiply next

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Subtract last

50 - 9 = 41

3 0
3 years ago
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