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3 years ago

4x+5=x+8 Please help thx

Mathematics

2 answers:

emmainna [20.7K]3 years ago

6 0

Answer:

I dont know if you want the answer of it or what x is but X is 1 I believe!

Step-by-step explanation:

Subtract 5

from both sides of the equation

'4+5−5=+8−5' and subtract x from both sides(I'm not well at explanation lol)

adoni [48]3 years ago

3 0

Answer:

x=1

Step-by-step explanation:

you can also use mathpapa it's a calculator that gives you the answer and solves it for you step by step.

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For which situations is it appropriate to use a sample? Select three options.

maw [93]

Answer:

B C D

Step-by-step explanation:

We use samples when using an entire population is not feasible.

It is not reasonable to ask every pick-up truck driver what they want their next purchase to be; there are too many owners of pick-up trucks. This means we should use a sample.

Many people drive a highway that connects two large cities. It is not reasonable to survey every person that drives it, so we should use a sample.

On a busy road, we may have many pedestrians; this means we should use a sample instead of the entire population.

XOXO

Kit

brainly.com/question/17113732 <-- hopes this link helps ya ^w^

7 0

3 years ago

1. Let the test statistics Z have a standard normal distribution when H0 is true. Find the p-value for each of the following sit

Nonamiya [84]

Answer:

1 a $p -value = 0.030054$

1b $p -value = 0.0029798$

1c $p -value = 0.0039768$

2a $p-value = 0.00099966$

2b $p-value = 0.00999706$

2c $p-value = 0.0654412$

Step-by-step explanation:

Considering question a

The alternative hypothesis is H1:μ>μ0

The test statistics is z =1.88

Generally from the z-table the probability of z =1.88 for a right tailed test is

$p -value = P(Z > 1.88) = 0.030054$

Considering question b

The alternative hypothesis is H1:μ<μ0

The test statistics is z=−2.75

Generally from the z-table the probability of z=−2.75 for a left tailed test is

$p -value = P(Z < -2.75) = 0.0029798$

Considering question c

The alternative hypothesis is H1:μ≠μ0

The test statistics is z=2.88

Generally from the z-table the probability of z=2.88 for a right tailed test is

$p -value = P(Z >2.88) = 0.0019884$

Generally the p-value for the two-tailed test is

$p -value = 2 * P(Z >2.88) = 2 * 0.0019884$

=> $p -value = 0.0039768$

Considering question 2a

The alternative hypothesis is H1:μ>μ0

The sample size is n=16

The test statistic is t = 3.733

Generally the degree of freedom is mathematically represented as

$df = n - 1$

=> $df = 16 - 1$

=> $df = 15$

Generally from the t distribution table the probability of t = 3.733 at a degree of freedom of $df = 15$ for a right tailed test is

$p-value = t_{3.733 , 15} = 0.00099966$

Considering question 2b

The alternative hypothesis is H1:μ<μ0

The degree of freedom is df=23

The test statistic is ,t= −2.500

Generally from the t distribution table the probability of t= −2.500 at a degree of freedom of df=23 for a left tailed test is

$p-value = t_{-2.500 , 23} = 0.00999706$

Considering question 2c

The alternative hypothesis is H1:μ≠μ0

The sample size is n= 7

The test statistic is ,t= −2.2500

Generally the degree of freedom is mathematically represented as

$df = n - 1$

=> $df = 7 - 1$

=> $df = 6$

Generally from the t distribution table the probability of t= −2.2500 at a degree of freedom of $df = 6$ for a left tailed test is

$t_{-2.2500 , 6} = 0.03272060$

Generally the p-value for t= −2.2500 for a two tailed test is

$p-value = 2 * 0.03272060 = 0.0654412$

4 0

3 years ago

Is the conditional statement true? If not, find the counterexample. (1 point)

Alla [95]

Is the conditional statement true? If not, find the counterexample. (1 point)

If a vegetable is green, then it is broccoli.

A. The statement is true

B. No a counterexample is a carrot.

C. No a counterexample is a pea

D. No a counterexample is a kiwi

ANSWER:

We know that not all vegetables are green so answer will be (B. No a counterexample is a carrot). Because carrot is not green.

----------------------------------------------------------------------

Rewrite the following definition as a bi-conditional: (1 point)

Points that lie on the same line are collinear.

A. If a point lies on a line, then it is collinear.

B. If a point lies on a line with another point, then the two points are collinear.

C. If two points are collinear, then they lie on the same line.

D. Points lies on the same line if and only if the points are collinear.

ANSWER:

Bi-conditional statemensts are written in form of "if and only if". Choice D) matches with that format and also means same thing as the given statement.

Hence (D. Points lies on the same line if and only if the points are collinear.) is the final answer.

----------------------------------------------------------------------

Rewrite the following statement as a conditional statement: (1 point)

Apples grow on trees.

A. If it grows on a tree, it is an apple.

B. If a fruit is an apple, then it grows on a tree.

C. Apples are a fruit if an only if they grow on a tree.

D. If it is not a fruit, then it is not an apple.

ANSWER:

Conditional statement is written in form of "if p then q". Now reading the given choices and comparing with real life situation, we will find that only choice B "If a fruit is an apple, then it grows on a tree." is correct.

As not all fruits growing on tree are apple so choice A is not possible. There are many fruits other than apple so choice D is also wrong. choice C not in form of If p then q so it is also wrong.

3 0

3 years ago

Read 2 more answers

PLEASE HELP!!!!! I WILL MARK YOU BRAINLIEST IF YOU ARE RIGHT!!!!!!

Anvisha [2.4K]

Answer:

Step-by-step explanation

Its c trust me.

4 0

3 years ago

The perimeter of an isosceles triangle is 15.6 m. Find the lengths of its sides, if: Chapter Reference a The base is 3 m smaller

SSSSS [86.1K]

We know that an isosceles triangle has 2 equal sides.

We can represent the equal sides with x, and the base with y:

2x + y = 15.6

Given states that y = x - 3, so:

2x + x - 3 = 15.6

3x = 18.6

x = 6.2

y = 3.2

The sides are 6.2 m, and the base is 3.2 m.

4 0

3 years ago