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Y_Kistochka [10]
3 years ago
9

I need help finding the answers

Mathematics
1 answer:
Stells [14]3 years ago
5 0

Answer:

Both B and C are your answers.

Step-by-step explanation:

Well let’s use process of elimination.

2(b+3c)= 2b+6c

A. 3(b+2c)= 3b+6c, so A is not an answer

B. (b+3c)+(b+3c)= 2b+6c, so B is an answer

C. 2(b)+2(3c)= 2b+6c, so C is an answer

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Find the distance between the given points: (2, -2) and (-4, 7)
sasho [114]

Answer:

3\sqrt{13}

Step-by-step explanation:

Hi there!

We want to find the distance between the points (2, -2) and (-4, 7).

To do that, we can use the distance formula.

The distance formula is given as \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}, where (x_1, y_1) and (x_2, y_2) are points

We have everything needed to find the distance, but let's label the values of the points to avoid any confusion

x_1=2\\y_1=-2\\x_2=-4\\y_2=7

Now substitute those values into the formula and solve

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

\sqrt{(-4-2)^2+(7--2)^2}

Simplify

\sqrt{(-4-2)^2+(7+2)^2}

\sqrt{(-6)^2+(9)^2}

Square the numbers under the radical

\sqrt{36+81}

Add the numbers under the radical together

\sqrt{117}

Simplify the square root

3\sqrt{13}

Hope this helps!

6 0
3 years ago
7th grade math help me pleasee
zimovet [89]

Answer:

a, c, b

Step-by-step explanation:

ITS CORRECT TRUST MEEE

7 0
3 years ago
Read 2 more answers
Solve the equation 2 cos x + 1 = 0 , 0 <= x <= 2pi PLEASE HELP! WILL AWARD!
Keith_Richards [23]
It would be pi over 6, 5 pi over 6, and 3 pi over 6.
6 0
3 years ago
Read 2 more answers
Show that det(A) = 0 without directly evaluating the determinant. A = [-4 1 1 1 1; 1 -4 1 1 1; 1 1 -4 1 1; 1 1 1 -4 1; 1 1 1 1 -
Anuta_ua [19.1K]
You could interpret them as system of equation and answer the question easily

from A 

-4x + y + x + w =1

write in same form from A 

as this system has five variables and four of them are unknowns it means the unique solution is not possible 

So, det (A) = 0



8 0
2 years ago
Read 2 more answers
If the divisor is 40 what is the least three-digit dividend tag would give a remainder of 4
fgiga [73]
Let the three digit dividend be abc , 

then abc = 40*Q+4

So, abc is "40 times Q (the quotient, a number) plus 4"

we try a few values of Q for which 40Q+4 is a 3 digit number:

for Q=2

40*2+4=80+4=84

for Q=3

40*3+4=120+4=124

Answer: 124
4 0
3 years ago
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