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nikklg [1K]
3 years ago
15

Jogging shoes listed at $70 were on sale for $45 what percent of the regular price for soup

Mathematics
1 answer:
OLEGan [10]3 years ago
7 0
If you’re asking what percentage was taken off, it would be 31.5%. (70*.45=31.5)
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Make x the subject of the formula<br> Y=3x+2
andrew-mc [135]

Answer:

(y-2)÷3=x

Step-by-step explanation:

y=3x+2

y-2=3x

(y-2)÷3=x

This answer could also be written as a fraction: y-2 over 3, equals x.

5 0
3 years ago
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans an
Liula [17]

Answer:

Adult required in the case of “a” 28 and in the case of “b” the adult requirement is 19.

Step-by-step explanation:

(a) The percentage of adult that support the change is 20 percent.

Now calculate the number of adult required.

Given p = 0.20

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.20 (1 – 0.20) = 10 \\n = 63 round off

Since 35 adults are already there so required adults are 63 -35 = 28

(b) The percentage of adult that support the change is 25 percent.

Now calculate the number of adult required.

Given p = 0.25

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.25 (1 – 0.25) = 10 \\n = 54 (round off)

Since 35 adults are already there so required adults are 54 -35 = 19 .

6 0
3 years ago
Which of the following is the equation of a line perpendicular to the line y=-10×+1 passing through the point (5,7)
Juliette [100K]
Y = -10x + 1...slope here is -10. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal of a number, flip the number and change the sign. So our perpendicular line will need a slope of 1/10.

y = mx + b
slope(m) = 1/10
(5,7)....x = 5 and y = 7
now sub and find b, the y int
7 = 1/10(5) + b
7 = 1/2 + b
7 - 1/2 = b
14/2 - 1/2 = b
13/2 = b

so ur perpendicular line going thru (5,7) is y = 1/10x + 13/2
3 0
3 years ago
What’s the commutative property of addition ?
spin [16.1K]

Answer:

Its when you just swthc your thingy

Step-by-step explanation:

2+4=6

turns into

4+2=6

6 0
2 years ago
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For the following right triangle, find the side length x. Round your answer to the nearest hundredth.
Agata [3.3K]

Answer:

x is equal to 15.62 .......

3 0
2 years ago
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