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3 years ago

Heyyyy any one wanna help me?!?!?!

Mathematics

1 answer:

inessss [21]3 years ago

4 0

Answer:

A'(1,7)

B'(7,2)

C'(2,-2)

Step-by-step explanation:

Multiply the scale factor to each coordinate to get the new coordinates.

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I really need help !!!!!!!!!!!

Y_Kistochka [10]

Ln20+ln5=2ln x
ln(20*5) = ln x^2
ln 100 = ln x^2
100 = x^2
x = 10 second option

6 0

3 years ago

The graph shows the movement of a spacecraft which has fired its “reverse thrusters.” Where will the ship be located relative to

zhenek [66]

Let X(t)=the position function with respect to time, t.

We're given:

X(0)=12 (from graph)

v(0)=0

X(2.5)=7

There is enough information to construct X(t).

In general,

X(t)=kt^2+v(0)(t)+x0

where initial velocity=v(0)=velocity at time 0 = 0 (given)

x0=initial position at time 0 = 12 (from graph)

Substituting values, the position equation is

X(t)=kt^2+12

Substituting given value X(2.5)=7 => 7=k(2.5^2) + 12

Solve for k to get k=(12-7)/6.25 = -4/5

The position equation now becomes

X(t)=-4t^2/5+12

For t=25,

X(25)=-4(25^2)/5+12=-500+12 = 488 m

5 0

3 years ago

Read 2 more answers

Heather, a sociology major is interested in studying mass media topics. She is particularly interested in the percentage of mass

Serhud [2]

Answer:

Null hypothesis: $p=0.72$

Alternative hypothesis: $p \neq 0.72$

$p_v = 2*P(|z|>z_{calc})$

And the best answer for this case is:

C. p-value

Step-by-step explanation:

Data given and notation

n represent the random sample taken

$\hat p$ estimated proportion of interest

$p_o=0.72$ is the value that we want to test

$\alpha=0.05$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the true proportion i 0.72 or no.:

Null hypothesis: $p=0.72$

Alternative hypothesis: $p \neq 0.72$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

For this case the only probability that can be calculated from the statistic calculated is the p value given by:

$p_v = 2*P(|z|>z_{calc})$

And the best answer for this case is:

C. p-value

3 0

2 years ago

State whether the number is a solution to the giving inequality.

Sloan [31]

Yes -14 is greater than -17

3 0

2 years ago

Read 2 more answers

Which of the following are debt collectors allowed to do when they’re attempting to collect debts?

sammy [17]

??? do u have any answer choices

4 0

3 years ago