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Fudgin [204]
2 years ago
9

Mary gets a $15 allowance each week. She also earns extra money by washing cars. She earns $5 for every car she washes. Each wee

k, Mary sets aside $4 for her movie streaming service and keeps $10 for spending money. She also has a goal to save $16 a week for college. How many cars does Mary need to wash each week to reach her goal?
Mathematics
1 answer:
statuscvo [17]2 years ago
6 0

Answer:

Step-by-step explanation:

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A number x divided by -1 is at least -4
Vinil7 [7]
A number x divided by -1 is at least -4.

x / -1 ≥ -4

Multiply both sides by -1.

x ≤ 4

Remember, when multiplying or dividing by a negative, you must change the sign's direction.

~Hope I helped!~
7 0
2 years ago
3(y−1.5)=9.9–4.2y Please help. Solve for y
AVprozaik [17]

Answer:

2

Step-by-step explanation:

8 0
3 years ago
On ITV's Homework Hotline, it's time for "Rudolf's Rules." If you guess what rule Rudolf is using you get a prize. Someone puts
oee [108]

Answer:

y = 3x -18 ( where y =  balls sent back by Rudolf; x= balls  given to Rudolf)

Step-by-step explanation:

x (Balls given)       y( Balls sent back)

8                             6                    Δy/Δx  = (27-6)/(15-8) =  3

15                            27

25                           57                 Δy/Δx  = (57-27)/(25-15) =  3

Observing the number sequence shows constant gradient and as such we can use equation of a straight line to relate the two variables.

Using the equation of a straight line we have:

(y-y1)/(x-x1) =  (y2-y1)/(x2-x1)

y-6/x-8  =       (27-6)/(15-8)

y-6/x-8  =    3

y-6        =  3(x-8)

y-6  = 3x - 24

y = 3x-18

7 0
3 years ago
If 2:7 is expressed in the form for 4. Find the value of x.​
Lelechka [254]

Answer:

x = 14

Step-by-step explanation:

Given that,

2:7 is expressed in the form for 4:x.

We need to find the value of x.

2:7 must be equated to 4:x.

So,

2:7=4:x\\\\or\\\\\dfrac{2}{7}=\dfrac{4}{x}\\\\x=\dfrac{7\times 4}{2}\\\\x=14

So, the value of x is equal to 14.

5 0
2 years ago
Simplify 14 to the 15th power over 14 to the 5th power
stiks02 [169]

Answer:

d) 14^10.

Step-by-step explanation:

14^15 / 14^5

= 14^(15-5(

= 14^10.

6 0
3 years ago
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