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2 years ago

Solve. -5p + 28= 13 p =

Mathematics

2 answers:

klio [65]2 years ago

6 0

Answer:

p=3

Step-by-step explanation:

-28 on both sides. should come up with this:

-5p = -15

now divide 5 with both sides. should come up with this

p=3

then youre done!!! hope this helps have a good day :)

Ainat [17]2 years ago

4 0

Answer:

Step-by-step explanation:

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Which of the following statements is true?

ziro4ka [17]

Option b is true among all options.

Step-by-step explanation:

We need to identify the true statement.

Checking each option:

a) The quotient of two negative numbers is negative.

This is false because the quotient of two negative numbers is positive.

for example: $=\frac{-4}{-2} \\=2$

b) The product of two negative numbers is positive.

This is true. If we multiply two negative numbers the result is positive.

For example: $=(-3)*(-2)\\=6$

c) The quotient of a positive number and a negative number is positive.

This is false because the quotient of a positive number and a negative number is negative.

for example: $=\frac{-4}{2} \\=-2$

d) The product of two positive numbers is negative.

This is false because the product of two positive numbers is positive.

For example: $=(3)*(2)\\=6$

So, Option b is true among all options.

Keywords: Integers

Learn more about Integers at:

#learnwithBrainly

4 0

3 years ago

Lucky Joe won $32,000,000 in a lottery. Every year for 10 years he spent 50% of what was left. How much did Lucky Joe have after

Phantasy [73]

Answer:

160,000,000

Step-by-step explanation:

(32000000)50/100(10)

5 0

3 years ago

This my lil sis work help her

Sholpan [36]

Answer:

Option D is your answer

6 0

3 years ago

Read 2 more answers

What is the coefficient in the expression below 42+2c

svp [43]

Answer:

the coefficient is 2

Step-by-step explanation:

3 0

3 years ago

Either use technology to find the P-value or use

Akimi4 [234]

Answer:

The first step is calculate the degrees of freedom, on this case:

$df=n-1=21-1=20$

Since is a one side left tailed test the p value would be:

$p_v =P(t_{(20)}$

And we can use the following excel code to find it: "=T.DIST(-0.024,20,TRUE)"

Step-by-step explanation:

Data given and notation

$\bar X$ represent the mean

$s$ represent the sample standard deviation

$n=21$ sample size

$\mu_o =140$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

t=-0.024 would represent the statistic (variable of interest)

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

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean for the widths of tornadoes is lower than 140 yd, the system of hypothesis would be:

Null hypothesis: $\mu \geq 140$

Alternative hypothesis: $\mu < 140$

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

The statistic is given by: $t = -0.024$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=21-1=20$

Since is a one side left tailed test the p value would be:

$p_v =P(t_{(20)}$

And we can use the following excel code to find it: "=T.DIST(-0.024,20,TRUE)"

Based on the p value obtained we can conclude that we FAIL to reject the null hypothesis at any significance level selected $\alpah=0.01,0.05,0.1$

7 0

3 years ago