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3 years ago

Solve these and show your work pls!

Mathematics

1 answer:

sertanlavr [38]3 years ago

3 0

Answer :the 1st and 3rd are true

Step-by-step explanation:

you do the math how their set up so just right those and you can get your answer that way. (if your adding a positive and negative your basically subtracting so just write in the order their in; if you subtracting a negative from a positive it equals a positive; if your subtracting a negative from a negative or the answer is positive; if your subtracting a positive from a negative its negative) i hope this helps if u have any more questions just message me and i will be happy to help you anytime!!! <3

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Evaluate expression: evaluate each expression when a = "-2" b=4 and c=-10

densk [106]

Answer:

2a+b=0

ac-b=16

a+b/a=-4

8a+5b=-4

-4a-b =4

3c/-5=6

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3 years ago

4 Select the correct answer. Which of these mappings is a function?

melomori [17]

Answer:

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Step-by-step explanation:

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3 years ago

In which question is r = -17 a solution?

devlian [24]

Answer:

None

Step-by-step explanation:

Simply solve each linear equation and get value of R.

Or another way can be to put value of R in all four options and find whether left hand side is equal to right hand side or not.

A) $3-\frac{2R}{4}=10$

$-\frac{R}{2}=7$

R = -14

B) $\frac{3}{4}-2R =10$

$-2R=10-\frac{3}{4}$

R = -37/8

C) $3(R-4)=10$

$R-4=\frac{10}{3}$

$R=4+\frac{10}{3}$

R = 22/3

D) $3-\frac{R}{4}=10$

R = -28

So, none of the option's are having solution R =-17.

7 0

3 years ago

It is believed that 43% of the US population can play the piano, 28% can play the guitar, 15% can play the harmonica, 12% can pl

LenaWriter [7]

43% = 'Piano'

28% = 'Guitar'

15% = 'Harmonica'

12% = 'Drums'

2% = ...Other Instruments

- '2' Does seems as to be the smallest but it could be a trick.

- '43' Is the largest percentage out of the whole group.

- '100' Is what you get when you add all of the percentages together.

- And if you try to evaluate the percentages together in either way it'll end up to be '0.00004334' so that executes '250' and '150' from out of the question.

I'm not sure exactly what the actual answer could be but I'm assuming since it said "What is the smallest number of people required for the sample to meet the conditions for performing inference" Then my assumption is '2'.

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3 years ago

Read 2 more answers

Simplify the product. Write the answer in standard form. (x2 + 4)(x+3)

Citrus2011 [14]

Answer:

x^3 + 3x^2 + 4x + 12

7 0

3 years ago