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zhenek [66]
3 years ago
12

You can work a total of no more than 10 hours each week at your two jobs. Housecleaning pays $7.50 per hour that you clean and y

our retail job pays $10.00 an hour. You need to earn at least $56 each week to pay your bills. Write a system of inequalities that shows the various numbers of hours that you can work at each job and still pay your bills.

Mathematics
1 answer:
kotykmax [81]3 years ago
6 0

Answer:

c + r \leq 10

7.5c + 10r \geq 56

Step-by-step explanation:

Given

Hours = not more than 10

Earnings = At least 56

Required

Represent this as a system of inequalities

Let c represents the cleaning job

Let r represents the retail job

The number of hours

Not more than means \leq 10

So:

c + r \leq 10

Earnings

c = 7.50 per hour

r = 10 per hour

Earnings = At least 56

At least 56 means \geq 56

So;

7.5c + 10r \geq 56

Hence, the system is:

c + r \leq 10

7.5c + 10r \geq 56

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find the area of field in a form of trapezium whose parallel sides are 10 and 12 and perpendicular distance between them is 6 me
IRISSAK [1]

Answer:

66 m²

Step-by-step explanation:

A = ½ (a + b) h

A = ½ (10 + 12) (6)

A = 66

The area is 66 m².

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4 years ago
Steven, Lisa and Mark want to buy a pizza. Steven said he could pay twice as much as Lisa. Mark said he could pay the remaining
34kurt

Answer:

$5

Step-by-step explanation:

8 0
3 years ago
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Footballs cost $22.00 each. The athletic director has $277.00 in his budget to spend on footballs there is a $13.00 shipping fee
ZanzabumX [31]

Answer:

16

Step-by-step explanation:

x = number of footballs he can order

22*x + 13 (shipping fee) = 277

22x = 264       Subtract 13 from both sides

x = 16               Divide both sides by 22

Our solution is 16 footballs

5 0
3 years ago
Nelson needs 3 and 3/4 cups of flour to make a loaf of bread and 2 and 2/3 cups of flour to make pretzels. How many cups of flou
matrenka [14]

Answer:

that is 6 and 5/ 12 cups of flour are required

Step-by-step explanation:

total number of cups required to make a loaf of bread

= 3 + ¾

making their denominators equal and that to 4

= 12/ 4 + 3/ 4

adding numerators

= (12 + 3)/ 4

= 15/ 4

total cups of flour required to make pretzels

= 2 + ⅔

making their denominators equal and that to 3

= 6/ 3 + 2/ 3

adding nunerators

= (6 + 2)/ 3

= 8/ 3

Total cups required:-

= 15/ 4 + 8/ 3

taking lcm of denominators to make the fractions equivalent

= {(15 × 3) + (8 × 4)}/ 12

= {45 + 32}/ 12

= 77/ 12

6 \frac{5}{ 12}

<em>that is 6 and 5/ 12 cups of flour are required</em>.

4 0
3 years ago
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How is the graph of the parent quadratic function transformed to produce the graph of y = negative (2 x + 6) squared + 3?
bearhunter [10]

We start with the parent function

f(x)=x^2

The first child function would be

g(x)=(2x)^2

We have multiplied the input of the function by a constant: we have

g(x)=f(2x)

This kind of transformation result in a horizontal stretch/compression. If the multiplier is greater than 1, we have a compression. So, this first child causes a horizontal compression with compression rate 2.

The second child function would be

h(x)=(2x+6)^2

We added 6 to  the input of the function: we have

h(x)=g(x+6)

This kind of transformation result in a horizontal translation. If the constant added is positive, we translate to the left. So, this second child causes a translation 6 units to the left.

The third child function would be

l(x)=-(2x+6)^2

We changed the sign of the previous function (i.e. we multiplied it by -1): we have

l(x)=-h(x)

This kind of transformation result in a vertical stretch/compression. If the multiplier is greater than 1 we have a stretch, if it's between 0 and 1 we have compression. If it's negative, we reflect across the x axis, and then apply the stretch/compression. In this case, the multiplier is -1, so we only reflect across the x axis.

The fourth child function would be

m(x)=-(2x+6)^2+3

We added 3 to previous function: we have

m(x)=l(x)+3

This kind of transformation result in a vertical translation. If the constant added is positive, we translate upwards. So, this last child causes a translation 3 units up.

Recap

Starting from the parent function y=x^2, we have to:

  • Compress the graph horizontall, with scale factor 2;
  • Translate the graph 6 units to the left;
  • Reflect the graph across the x axis;
  • Translate the graph 3 units up

Note that the order is important!

5 0
3 years ago
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