Carmine paid an electrician x dollars per hour for a 5-hour job plus $70 for parts. The total charge was $320. Which equation can be used to determine how much the electrician charged per hour *

Answer:

b=7/33 c= 14/33

Step-by-step explanation:

Repeat all 21 they are repeating decimals

for b its 100x-x=21.21 repeating the 21 -0.21 repeating the 21 = 100x-1x=(21+0.21)-0.21= (100-1)x=21+0.21-0.21 [ stop repeating the 21's up to here] and 99x=21+0 = 99x=21 = 99x/99=21/99 both 99's cancel leaving 3x7 divided by 3x33 = x= cancel both 3's leaving 7 over 33 This should help you learn to solve c good luck

Answer:

8,3

Step-by-step explanation:

Answer:

Y=3

X=9/5

Step-by-step explanation:

(1) 5x=y+6

(2) 5x+2y =3

Replace (1) to (2) => (y+6)+2y=3 => y=3

Replace y=3 to (2) => 5x = 3+6 => 5x=9 => x=9/5

Answer:

a) The y-intercept is 160. It represents the initial distance Jayden was from his home.

b) The x-intercept is 4. It represents the amount of time taken for Jayden to reach his home.

Step-by-step explanation:

The y-intercept can be found by looking at the value of y when x=0. When x=0, y= 160. Since the x-axis is the amount of time in hours, x=0 would mean the initial time. The x-axis is the number of miles from Jayden's home thus, Jayden was 160 miles away from his home when x=0 hours.

The x-intercept can be found by looking at the x value when y=0. When y=0, x=4. This means that it took Jayden 4 hours to reach home or 4 hours to travel 160miles to his house.

Answer:

5.5

Step-by-step explanation:

Sales tax = tax rate × Cost of meal

Sales tax = $1.32

Tax rate = x%

Cost of meal = $24

Sales tax = tax rate × Cost of meal

1.32 = x% × 24

1.32 = x/100 × 24

1.32 = 24x/100

1.32 * 100 = 24x

132 = 24x

x = 132/24

x = 5.5%

= 5.5

Club on white bread

Step-by-step explanation:

Answer:

-3 is a constant.

Step-by-step explanation:

The given equation is :

4x+5y-3 ...(1)

The general equation is :

ax+by+c ...(2)

c is a constant

If we compare equations (1) and (2), we find that.

c=-3

Hence, the constant in this expression is -3.

Answer:

12%

Step-by-step explanation:

The car is sold at a gain because its selling price is greater than cost price

Profit = [(selling price - cost price) / cost price ] x 100

[tex]\frac{504 - 450}{450}[/tex] x 100

[tex]\frac{54}{450}[/tex] x 100 = 12%.

Answer:

100

Step-by-step explanation:

if its the same then its 100

Answer:

the answer is A

Step-by-step explanation:

-17 - (-7) = -24

a = -24

Answer:

b) a = -10

Step-by-step explanation:

a + (-7) = -17

simplify

a - 7 = -17

add 7 to both sides of the equation

a - 7 + 7 = -17 + 7

a = -17 + 7

a = -10

Answer:

maybe. hope this help....

Answer:

C (The lower left one)

Step-by-step explanation:

I saw that the vertex was equal to (-1,1) and that is the only answer that makes sense

The graph of the function y = x shifted 1 unit up and moved 1 unit to the left

so the new function is now y = (x + 1) + 1.

The set of ordered pairings (x, y) where f(x) = y makes up the graph of a function.

These pairs are Cartesian coordinates of points in two-dimensional space and so constitute a subset of this plane in the general case when f(x) are real values.

By observing the figure we conclude that it shifted 1 unit up and moved 1 unit to the left.

If the original graph was y = x now it is y = (x + 1) + 1.

learn more about graphs here :

https://brainly.com/question/2288321

#SPJ5

Answer:

380%

Step-by-step explanation:

Turn into an improper fraction:

3x5=15 15+4= 19/5

You can do two ways

multiply by 20

19      x20            380

------                = ----------

5        x20           100

Other way: put into calculator

3,8

Turn into percent by multiplying by 100

=380

Answer:

it's  equals 7

Step-by-step explanation:

Answer:0.5

Step-by-step explanation:

60➗12

Probability of an event is the measure of its chance of occurrence. The experimental probability of Janice rolling the number four is 0.2

Experimental probability calculates the probability of some event from the results of experiments.

For an event E, we get the experimental probability of that event

[tex]P_e(E) = \dfrac{\text{Number of times E occurred}}{\text{Number of times experiments was done}}[/tex]

where, [tex]P_e(E)[/tex] is denoting experimental probability of occurrence of E.

For this case, we're specified that:

The event in consideration is "Rolling the number 4"

The times she rolled the number 4 is: 12

She got four 12 times in 60 rolls of the considered cube.

Thus, we have:

Thus, we get:

[tex]P_e(E) = \dfrac{\text{Number of times E occurred}}{\text{Number of times experiments was done}} = \dfrac{12}{60} = \dfrac{1}{5} = 0.2[/tex]

Thus, the experimental probability of Janice rolling the number four is 0.2

Learn more about experimental probability here:

https://brainly.com/question/2547434

Answer:

61

Step-by-step explanation:

1/5 = .2

so you do 12.2 / .2 which gives you 61

Answer:

Your answer is 61

Step-by-step explanation:

Step 1.  Convert 12.2 into a fraction. (I chose to put 12.2 over 10 so in the end it's 122/10.)

Step 2. Layout your problem

Remeber when dividing fractions it Keep, Change, Flip.

122/10 x 5/1

Step 3. Solve

122/10 x 5/1 = 61

That should be your answer to the problem :)

Answer:

Around 21 cents per bottle.

Good price!

Answer:

40.5

Step-by-step explanation:

a cube has 6 faces so 6.75 x 6 = 40.5

Answer:

5,022 Students

Step-by-step explanation:

All you have to do it multiply!

Like so:

81*62= 5,022

Answer:

p=78

Step-by-step explanation:

73+p=151

73-73+p=151-73

p=78

Answer and explanation:

Given the above, we find y in terms x

change in y change in x = 0.5

The formula for a straight line is y= mx+b where m is slope of the line and b is the y intercept

We substitute given values above in the straight line equation:

y=mx+b

1.5= 0.5×3+b

1.5=1.5+b

b= 0

y in terms of x for the line is therefore given by the formula :

y=0.5x+0

Answer:

y=-x-1

Step-by-step explanation:

Answer:

$26.98 each

Step-by-step explanation:

Answer:

Approximately $26.98 each

Step-by-step explanation:

Divide 188.88 by 7 to get the cost for each. The round to the nearest hundredth.

Answer:3:40 ratio

Step-by-step explanation:

Answer: Perpendicular

Step-by-step explanation:

Answer:

HCF 8, 12, 16 = 4

HCF 14, 28 = 14

14 - 4 = 10

Answer:

hmmmmmmmmmmmmmm ,   hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Answer:

(-3,-1)

Step-by-step explanation:

6x-12y=-6

6x=12y-6

x=2y-1

9(2y-1)-6y= -21

18y-9-6y=-21

12y= -12

y=-1

6x-12(-1)=-6

6x+12= -6

6x=-18

x=-3

Answer:

x = -3 ; y = -1

Step-by-step explanation:

Let 9x - 6y = -21 be eqn.1 & let 6x - 12y = -6 be eqn.2 .

Lets find the value of x from eqn.1

[tex]9x - 6y= -21[/tex]

[tex]=> 3(3x - 2y) = -21[/tex]

[tex]=> 3x - 2y = \frac{-21}{3} = -7[/tex]

[tex]=> x = \frac{2y - 7}{3}[/tex]

Now , lets put the value of x (which we got from eqn.1) in eqn.2 :-

[tex]6x - 12y = -6[/tex]

[tex]=> 6(x - 2y) = -6[/tex]

[tex]=> x - 2y = \frac{-6}{6} = -1[/tex]

(Putting x here)

[tex]=> \frac{2y - 7}{3} - 2y = -1[/tex]

[tex]=> \frac{2y - 7 - 6x}{3} = - 1[/tex]

[tex]=> -4 y - 7 = -1 \times 3 = -3[/tex]

[tex]=> -4y = 7 - 3 = 4[/tex]

[tex]=> y = \frac{-4}{4} = -1[/tex]

Now , lets find the value of x.

[tex]x = \frac{2y - 7}{3}[/tex]

Putting y = -0.5 gives ,

[tex]x = \frac{[2 \times (-1)] - 7}{3}[/tex]

[tex]=> x = \frac{-2 - 7}{3} = \frac{-9}{3} = -3[/tex]