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alukav5142 [94]
3 years ago
15

Suppose that your mom gives you $20 to go to the school supplies store. there is a 6% sales tax on supplies. you need to buy the

following items:pencils = $1.29notebook binder = $5.99paper = $3.49high-lighter pens = $2.35a. how much will the supplies cost?
b. how much change will you receive?
Mathematics
1 answer:
almond37 [142]3 years ago
8 0
20 times .06. Then you add that to 20. Subtract the total of all the supplies needed from 21.20. That will equal your change. Then subtract 9.37 from 21.20. That will be the cost.  <span />
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Factorise 18a³b³- 27a²b³ +36a³b²​
irinina [24]

Answer:

(9a^2b^2(2ab - 3b + 4a).

Step-by-step explanation:

Take out the GCF.

The GCF is 9a^2b^2 so the factors are

(9a^2b^2(2ab - 3b + 4a).

3 0
3 years ago
4. Find the solution for each equation:<br> x + 4 = 16
Alex777 [14]

Answer:

x=12

Step-by-step explanation:

when solving and equation with a variable, you must work backwards and do the opposite of the equation

sooo… you must subtract 4 (opposite of +4 is -4)

16-4=2

x=12

3 0
2 years ago
Read 2 more answers
What is the equation of a line perpendicular to the line y=(4/9)x-2 that passes through the point (4,3)?
Hoochie [10]
<span>y=(4/9)x-2
This is in slope intercept form (y=mx+b), where m is the slope. 
A perpendicular line will have the opposite reciprocal of the slope.
So if the slope here is 4/9, then the perpendicular line's slope will be -9/4.

Now that you have the slope (-9/4) and a point (4, 3), you can use the point-slope formula to find the equation.
y - y</span>₁ = m(x - x₁)
y - 3 = (-9/4)(x - 4)
y - 3 = (-9/4)x + 9
y = (-9/4)x + 12

So the answer will be:
C. <span>y= -(9/4)x+12</span>
3 0
3 years ago
Is the square root of 9 a real number
Keith_Richards [23]
Is 3 because 3 times 3 equals 9
5 0
3 years ago
Can anyone please help me with number 17?
sweet-ann [11.9K]

The answer is G. I know because, 1.75 * 3 (slices of pizza) = 5.25.

13.75 - 5.25 = 8.5

8.5 / 4 (hot dogs) = 2.1 (price per hot dog)

We can apply this to Sarah by saying

2 * 1.75 = 3.5

3 * 2.1 = 6.3

Added equals 9.8 or 9.75 (Sarah's total)

Correct me if I am wrong hope this helps:)

7 0
3 years ago
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