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aalyn [17]
3 years ago
7

Jessica wants to buy a belt for $18. If there is a 6% sales tax, find the amount of the sales tax on the belt.

Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0
$1.08 because if you multiply the percentage with the original price you will get your answer.
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Solve the system of equations using elimination<br> x-y=3<br> 2x+2y=50
pishuonlain [190]

Answer:

X=14

Y=11

Step-by-step explanation:

14-11=3

14x2=28

11x2=22

22+28=50

Hope that works :)

6 0
3 years ago
Read 2 more answers
A plane flew 360km in 3 hrs when flying with the wind.With no change in the wind,the return trip took 4 hrs.Find the speed of th
morpeh [17]
Speed of the plane: 250 mph
Speed of the wind: 50 mph
Explanation:
Let p = the speed of the plane
and w = the speed of the wind
It takes the plane 3 hours to go 600 miles when against the headwind and 2 hours to go 600 miles with the headwind. So we set up a system of equations.
600
m
i
3
h
r
=
p
−
w
600
m
i
2
h
r
=
p
+
w
Solving for the left sides we get:
200mph = p - w
300mph = p + w
Now solve for one variable in either equation. I'll solve for x in the first equation:
200mph = p - w
Add w to both sides:
p = 200mph + w
Now we can substitute the x that we found in the first equation into the second equation so we can solve for w:
300mph = (200mph + w) + w
Combine like terms:
300mph = 200mph + 2w
Subtract 200mph on both sides:
100mph = 2w
Divide by 2:
50mph = w
So the speed of the wind is 50mph.
Now plug the value we just found back in to either equation to find the speed of the plane, I'll plug it into the first equation:
200mph = p - 50mph
Add 50mph on both sides:
250mph = p
So the speed of the plane in still air is 250mph.
6 0
3 years ago
Which of the following expressions has a sum of 42/100
Yakvenalex [24]

Answer:

i need to know the expressions in order to answer but ill be happy to help otherwise

Step-by-step explanation:


4 0
3 years ago
Demola is two years older than Deji and Tobi is half of Demola's age. The sum of their ages is 23. How old is Deji​
ella [17]

answer is in the picture

7 0
3 years ago
The cross section of a metal ingot is a trapezoid. The cross section has an area of 39 square centimeters. The top base of the c
Fiesta28 [93]
A trapezoid is a polygon of four sides with two parallel sides.

The area of trapezoid is the half sum of the lengths of the paralled sides times the height which is the distance between the parallel sides.

Call b1 and b2 the lengths of the two parallel sides and H the heigth, the formula is [1/2](b1 + b2) H.

We know b1 = 12cm, b2 = 12cm + 2 cm, and the area = 39 cm^2, then we can find H:

39 = [1/2](12 + 14)*H

39 = (13/2)H => H = 2*39 / 13 = 6 cm

Answer: 6 cm
6 0
3 years ago
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