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r-ruslan [8.4K]
3 years ago
7

The list of all factors for 21 is 1, 3, 7, and 21. True False

Mathematics
1 answer:
aniked [119]3 years ago
7 0
True the factors of 21 are 1,3,7 and 21
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What is the slope and y- intercept of the line passing through (11,-3) and (7,9)
Misha Larkins [42]

Answer:

Slope is -3, y-intercept is 30

Step-by-step explanation:

You take the two points (11,-3) and (7,9), plug them into the formula y2-y1/x2-x2=m. Now, you have 9-(-3)/7-11 which gives you 12/-4, 12/-4 can be simplified into -3 which is your slope. To find y-intercept you must use the formula y=mx+b. Plug -3, your slope, into m, and any of the coordinates on your line into the y and x; I used (7,9). You solve for b from 9=-3*7+b. -3*7 gives you -21, now you have 9=-21+b, to get b by itself, you add 21 to both sides, 30=b. B is your y-intercept.

7 0
3 years ago
Help me please . I am stuck
Radda [10]

Answer: n⁴+10n²x+25x²

Step-by-step explanation:

I don;t know how I can use the binomial squares pattern on Brainly, but I can definitely guide you through the problem.

(n²+5x)²                           [rewrite this from the squared]

(n²+5x)(n²+5x)                [use FOIL to expand]

n⁴+5n²x+5n²x+25x²       [combine like terms]

n⁴+10n²x+25x²

7 0
3 years ago
Find the value of x. Round to the nearest tenth.
goblinko [34]

Answer:

19.7

Step-by-step explanation:

37-17.3=19.7 which would be the value of x

4 0
3 years ago
Given that R = 8 x + 4 y Find y when x = 8 and R = 30 Give your answer as an improper fraction in its simplest form.
Maksim231197 [3]

Answer:

y = -17/2

Step-by-step explanation:

Substitute with the givens.

30= 8(8) + 4y.

Multiply parentheses.

30 = 64 + 4y

Subtract.

30-64= -34

-34 = 4y.

Divide each side by 4.

y = - 8.5, or -17/2

hope that is right!

8 0
3 years ago
2<br><img src="https://tex.z-dn.net/?f=2%29x%20-%205%29%20%2B%202%20-%203%285%20-%202x%29%20%3D%2016" id="TexFormula1" title="2)
fgiga [73]

Answer:

Step-by-step explanation:

2(x-5)+2-3(5-2x)=16​

2x-10+2-15+6x =16

8x-23 =16

8x =39

x = 39/8

6 0
3 years ago
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