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krek1111 [17]
3 years ago
15

Sophia is saving money for a new bicycle. The bicycle will cost at least $623. Sophia makes $8.22 per hour. Which inequality cou

ld be used find the number of hours Sophia needs to work to make enough money to buy a new bicycle? $8.22h > $623 $8.22h ≤ $623 $8.22h ≥ $623 $8.22h < $623​
Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

The awnser would be B.

Step-by-step explanation:

If she needs to make 623$ Then she would have to make more than or equal to the number she needs. $8.22h ≥ $623 represents this because its greater than of equal to. :)

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Marine fuel is a combination of gasoline and motor oil. The standard gasoline and oil mixture is about 98% gasoline and about 2%
Georgia [21]

Answer:

0.98g+ 0.02m= 7.1224 gallons standard mixture

0.96g+ 0.04m= 6.25 gallons break oil

3.92 gallons of gasoline  is required for  4 gallons the standard mixture

Step-by-step explanation:

If we have to use 6 gallons of gasoline this means that 98%= 6 gallons and 2% would be 6/98*2

Gasoline: Motor oil

6              :    x

98        : 2

Using the product rule

x= 6*2/98= 0.1224 gallons of motor oil is required.

Let the gasoline be represented by g and motor oil by m then for the standard oil the equation would be

0.98g+ 0.02m= 7.1224 gallons standard mixture

For break in oil

Gasoline: Motor oil

6              :    x

96        : 4

Using the product rule

x= 6*4/96= 0.25 gallons of motor oil is required.

Let the gasoline be represented by g and motor oil by m then for the break oil the equation would be

0.96g+ 0.04m= 6.25 gallons break oil

Part b. For  4 gallons of the "break in" mixture

96% of the 4 gallons of the "break in" mixture is gasoline =  3.84 gallons of gasoline

4% of 4 = 0.16 gallons of motor oil

Now the standard mixture 4 gallons would contain 98 % of gasoline and 2 % of motor oil

98% of 4 gallons= 3.92 gallons of gasoline

2% of  4 gallons= 0.08 gallons of motor oil.

6 0
3 years ago
Kelsey received a gift card for $20 to Games R Us. She plans to buy at least 1 doll but might want to buy more. Each doll costs
miv72 [106K]

Answer:

she can buy 6 dolls

Step-by-step explanation:

7 0
4 years ago
What is the solution to the inequality x + 4 + 2x ≤ 20 + 5x – 32
Illusion [34]

Answer:

x+4+2x = 20+5x-32

Step-by-step explanation:

x+4+2x

= 3x + 4

20+5x-32

= 20-32+5x

= 5x-12

Finding the value of X

3x+4 = 5x-12

= 4+12 = 5x-3x

= 16 = 2x

= 16/2 = X

= 8 = X

By putting the value of X in the equation

(3×8)+4

= 24 +4

= 28

(5×8)-12

= 40-12

28

28 = 28

so the X+4+2x < 20+5x-32 is wrong

5 0
3 years ago
25 points please help!!!
MAVERICK [17]

Answer: A) y=25,   B) y=10  C) y=-5  D)y=-20

Step-by-step explanation:

So whenever you have a question like this just plug in the values.

A) x=0

y= -3x+25 will now turn into y=0+25, so y=25

B) x=5

y= -3x+25 is now y= -15 +25, so y=10

C) x=10

y= -3x+25 is now y= -30+25, so y=-5

D) x=15

y=-3x+25 is now y= -45+25, so y=-20

6 0
3 years ago
Read 2 more answers
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grandymaker [24]

Answer:

Step-by-step explanation

$20 but im not for sure so if im wrong im sorry

5 0
3 years ago
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