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3 years ago

Pleease help with this one math question?

Mathematics

2 answers:

dmitriy555 [2]3 years ago

7 0

Answer:

square root 12^5

Step-by-step explanation:

ycow [4]3 years ago

6 0

Answer:

$\sqrt(12)^{5} }$

Step-by-step explanation:

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Devin is on his school's swim team. During his 2-week winter break, he swims 30 laps each week to stay in shape. If each lap is

tamaranim1 [39]

I think... 1500

Step-by-step explanation:

multiply 30 and 25 then times 750 as your answer by 2 to get 1500

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3 years ago

Sara pays $11 for 2.75 pounds of cheese.what is the cost per pound

deff fn [24]

0.25 cents per pound

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3 years ago

Read 2 more answers

Need help with this math

sveta [45]

This is an arithmetic sequence, as there is a common difference of 21 between terms.

By using the formula, the 18th term of the sequence is

= 1st term + (18 - 1)(21)

= 15 + 17 * 21

= 372

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3 years ago

Given that 2x+y= y+x+1 and y =2x+2y solve for x and y

Pachacha [2.7K]

Answer:

x=1,y=-2

Step-by-step explanation:

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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

6 0

3 years ago