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Advocard [28]
3 years ago
10

Answer this for me please

Mathematics
1 answer:
dybincka [34]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

You cant count the spaces up (9) and over (-3) between the two points and do up/over so it would be 9/-3 and simplified that is -3/1 or 3

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4 - (-19) =<br> What is the answer?
Arada [10]

Answer:

Step-by-step explanation:

4 - (-19) = 4 + 19

            = 23

6 0
3 years ago
Read 2 more answers
How many different ways can a researcher select 4 rats from 15 rats and assign each to a different test?
Tomtit [17]

By 32,760 different ways can a researcher select 4 rats from 15 rats and assign each to a different test .

<u>Step-by-step explanation:</u>

We need to find How many different ways can a researcher select 4 rats from 15 rats and assign each to a different test.Let's find out:

We will use Permutation here : As we will chose 4 rats out of 15 rats , order will be considered which will make this as a permutation problem . Formula for permutation is given by :

⇒ nP_r= \frac{n!}{(n-r)!}

According to question , we have

⇒ 15P_4= \frac{15!}{(15-4)!}

⇒ 15P_4= \frac{15!}{(11)!}

⇒ 15P_4= \frac{15(14)(13)(12)11!}{(11)!}

⇒ 15P_4= 15(14)(13)(12)

⇒ 15P_4= 32,760

Therefore , By 32,760 different ways can a researcher select 4 rats from 15 rats and assign each to a different test .

6 0
3 years ago
What is the degree of each monomial?<br> 5x^7<br><br> a. 5<br> b. 35<br> c. 7<br> d. 12
Iteru [2.4K]
Add up all of the exponents

5x^7 has a degree of \boxed{7}
3 0
3 years ago
Someone helppp! This is due the day after tomorrow!!
PilotLPTM [1.2K]

Step-by-step explanation:

Given

(2x + 3 )² - (2x + 3) (x - 5)

= 4x² + 6x + 9 - ( 2x (x - 5) + 3(x - 5 ))

= 4x² + 6x + 9 - ( 2x² - 10x + 3x - 15 )

= 4x² + 6x + 9 - 2x² + 10x - 3x + 15

= 2x² + 13x + 24

Hope it will help :)

6 0
3 years ago
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15. Write an equation of a line in standard form that: 2x + 5 passes through the point (1, 5) and is parallel to y=2x+5​
lesya [120]

Answer:

y = 2x +3

Step-by-step explanation:

Given

Parallel: y = 2x + 5

Passes through (1,5)

Required

Determine the equation

Because it is a parallel to y = 2x + 5 then they have the slope.

The slope of y = 2x + 5 is 2 i.e. from y  = mx + b

So:

m = 2

The line equation is then calculated using:

y = m(x - x_1) + y_1

y = 2(x - 1) + 5

y = 2x - 2 + 5

y = 2x +3

5 0
3 years ago
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