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SVEN [57.7K]
4 years ago
9

Y is directly proportional to (x+2)2 when x=8 y = 250 find y when x=4

Mathematics
1 answer:
SIZIF [17.4K]4 years ago
8 0

Answer: 150

Step-by-step explanation: K is constant

250= K (8+2)2

250= K (10)2

250= K (20)

250= K20

divide both sides by 20

250/20= K

12.5= K

THEREFORE

Y= K (4+2)2

Y= 12.5 (6)2

Y= 12.5 × 12

Y= 150

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If (7^0)^x = 1, what are the possible values of x? Explain your answer.
Mandarinka [93]

Answer:

Endless

Step-by-step explanation:

There are endless possibilities for x, because 1 to the power of any x will always be 1.

8 0
3 years ago
Compare the two figures. How many times bigger or smaller is the cone to
Gemiola [76]

Answer:

The proportion of the volume of the cone to the volume of the pyramid is: 3.14 times bigger.

Step-by-step explanation:

<u>Given the information of the cone: </u>

  • The height: 12 inches
  • The radius of the base is : 10/2= 5 inches

=> the volume of the cone

= 1/3πr^{2} *h

= 1/3*3.14*5^{2} *12

= 314 cubic inches

<u>Given the information of the pyramid: </u>

  • the height: 12 inches
  • The base is a suqare with a side lengh = 5 inches  

=> the volume of the pyramid:

= 1/3*Bh            (where B is the area of the base)

= 1/3*5*5*12

= 100 cubic inches

<u>The proportion of the volume of the cone to the volume of the pyramid is: </u>

= 314 /100

= 3.14 times bigger.

Hope it will find you well

3 0
3 years ago
Can someone please help me asap?? I’ll mark brainlist !!
nexus9112 [7]

Answer:

It's the same price.

Step-by-step explanation:

20% of $200 is $40. Either way, you get $40 off.

7 0
4 years ago
A new soft drink is being market tested. A sample of 400 individuals participated in the taste test and 80 indicated they like t
romanna [79]

Answer: p-value of the test  = 0.167

Step-by-step explanation:

Given that,

sample size n = 400

sample success X = 80

confidence = 95%

significance level = 1 - (95/100) = 0.05

This is the left tailed test .

The null and alternative hypothesis is

H₀ : p = 0.22

Hₐ : p < 0.22

P = x/n = 80/400 = 0.2

Standard deviation of proportion α = √{  (p ( 1 - p ) / n }

α = √ { ( 0.22 ( 1 - 0.22 ) / 400 }

α = √ { 0.1716 / 400 }

α = √0.000429

α = 0.0207

Test statistic

z = (p - p₀) / α

z = ( 0.2 - 0.22 ) / 0.0207

z = - 0.02 / 0.0207

z = - 0.9661

fail to reject null hypothesis.

P-value Approach

P-value = 0.167

As P-value >= 0.05, fail to reject null hypothesis.

Since test is left tailed so p-value of the test is 0.167. Since p-value is greater than 0.05 so we fail to reject the null hypothesis.

4 0
4 years ago
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exis [7]

Answer:

x-12=24, x=36

Step-by-step explanation:

letter X subtract 12 is 24. Add 12 to both sides, and x=36.

8 0
3 years ago
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