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3 years ago

write the equation of a line that is perpendicular to the line y=-3/7-15 and that passes through the point (9,2)

Mathematics

1 answer:

SashulF [63]3 years ago

8 0

Answer:

Step-by-step explanation:

First substitue the coordinates to the equation so

x=9, y=2

you would get

2=-3/7(9) + b

we put b because we are trying to find the new slope

multiply the two numbers above

2=-3/6/7 + b

subtract the whole number from both sides

b= 5/6/7

in equation would be

y= -3/7 + 5/6/7

Let me know if there is an error.

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A jacket is on sale for 40% off .The sale price is $90.00.What is the original amount of the jacket

34kurt

Set up a proportion
90/x = 60/100
60x = 9000
x = 150

if you're wondering why I used 60 instead of 40 in the proportion it is because $90 is 60% of the original price, not 40%

hope this helps!

6 0

3 years ago

Two hundred fifty tickets are sold at a fund raiser. If Sarah buys 15 tickets, the probability that she will win the prize quilt

Semmy [17]

Answer:

Step-by-step explanation:

15/250=3/50 or 6%

5 0

2 years ago

1/8(5y+64)=1/4(20+2y)

marin [14]

Answer:

y=−24

Explanation:

18(5y+64)=14(2y+20)

multiply both sides by 8:

5y+64=2(2y+20)

multiply out brackets:

5y+64=4y+40

subtract 4y from both sides:

y+64=40

subtract 64:

y=40−64=−24

y=−24

3 0

3 years ago

denis23 [38]

Answer:

$B = 325$

Step-by-step explanation:

Given

Total = 900

Singing = 600

Dancing = 500

None = 125

Required

Determine the number of students that participate in both

Representing; Singing with S, Dancing with D, Both singing and dancing with B and None with N;

In Set Notation;

$Total = (S - B) + (D - B) + N + B$

Substitute 900 for Total, 600 for S, 500 for D and 125 for N

$900 = (600 - B) + (500 - B) + 125$

Open Brackets

$900 = 600 - B + 500 - B + 125 + B$

Collect Like Terms

$900 = 600 + 500 + 125 - B - B + B$

$900 = 1225- B - B + B$

$900 = 1225- B$

Collect Like Terms

$900 - 1225 = -B$

$-325 = -B$

Multiply both sides by -1

$-1 * -325 = -B * -1$

$325 = B$

Reorder

$B = 325$

Hence, the number of students that do not participate in both is 325

4 0

3 years ago

Point R is on line segment QS. Given RS = 13 and QS = 20, determine the length of QR

Aleksandr-060686 [28]

Answer:

Length of QR = 7

Step-by-step explanation:

20 - 13 = 7

6 0

3 years ago