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3 years ago

What is the distance between (3,-4) and (-2,5)

Mathematics

1 answer:

IgorLugansk [536]3 years ago

8 0

Answer:

Distance between points (4, 3) and (3, -2) is 5.099

Step-by-step explanation:

sorry if i'm wrong can you mark me brainless plz

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Simplify- 5+2{3x+7(2-x)}

oksano4ka [1.4K]

Answer:

16x+19

Step-by-step explanation:

i might be wrong and its gonna take so long to explain it

4 0

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

The function f is continuous on the interval [3, 13] with selected values of x and f(x) given in the table below. Find the avera

Lelechka [254]

The average rate of change of $f(x)$ over the interval [3, 13] is given by the ratio

$\dfrac{f(13)-f(3)}{13-3}=\dfrac{22-2}{13-3}=\dfrac{20}{10}=2$

3 0

3 years ago

What is the slope of this line? It has the points of (-8,2) (0,2) and (7,2)

tresset_1 [31]

Answer:

Well the slope would be 0 because the y doesn't change. So if y is same it is 0, if x remains the same Slope is undefined, and then there is normal slope.

Step-by-step explanation:

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3 years ago

What is x^2-28-3x ? ( x^2 means x squares )

Verizon [17]

This is the way to solve the problem

3 0

4 years ago

Read 2 more answers