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3 years ago

What is the value of x?

Mathematics

2 answers:

Lesechka [4]3 years ago

7 0

Answer:

Step-by-step explanation:

2x-10/x-3=5/3 X=15

steposvetlana [31]3 years ago

6 0

The answer would be C the value of X is 15

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The tennis racket is $36.75 before tax in the sales tax is 6% what is the finial price

scoundrel [369]

The final price for the racket is $38.96

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3 years ago

A college entrance exam company determined that a score of 24 on the mathematics portion of the exam suggests that a student is

seraphim [82]

Answer:

a) The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at 0.01% level of significance

They score is above 24 on the math portion of the exam

b)

Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

Step-by-step explanation:

Step(i):-

Given random sample 'n' = 250

Given data sample mean x⁻ = 24.5

Standard deviation = 3.3

Null Hypothesis: There is no significance difference between the college level mathematics and math courses in high school

H₀: μ = 24

Alternative Hypothesis: H₁: μ ≠ 24

test statistic

$Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{24.5 - 24}{\frac{3.3}{\sqrt{250} } } = \frac{0.5}{0.2087} = 2.397$

a) 99% or 0.01% level of significance

Level of significance ∝ = 0.01

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} =2.576$

The Z -value 2.397 < 2.576 at 99% or 0.01% level of significance

Null hypothesis is accepted at 0.01% level of significance

They score is above 24 on the math portion of the exam

b) 95% or 0.05% level of significance

Level of significance ∝ = 0.05

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = Z_{0.025} = 1.96$

The Z -value 2.397 > 1.96 at 95% or 0.05% level of significance

Null hypothesis is Rejected at 0.05% level of significance

They score is below 24 on the math portion of the exam

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3 years ago

Help meeeeeee!!!!!!!

Juliette [100K]

A: partial variation

B: Direct variation

C: Direct variation

D: Partial variation

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3 years ago

6.7 more than the product of 5 and n

Jlenok [28]

6.7 5 n More than means + Product of means • So 6.7+(5n)

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4 years ago

A man is driving in a city that is built on a grid his car is at point S(66,17), and he needs to get to a parking lot at point T

liberstina [14]

Answer:

a. (45.5,9)

b.79 units

c.14 units

Step-by-step explanation:

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2 years ago