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UkoKoshka [18]
3 years ago
6

SOMEONE PLEASE HELP ME ASAP!!!!!!!! I'LL GIVE YOU A GREAT RATE PLEASE ANYONE!!!!!!!!!!!! I'M PRAYING

Mathematics
1 answer:
djyliett [7]3 years ago
5 0

Answer:

-10

Step-by-step explanation:

\frac{-4r}{2} - 3r + 5

\frac{-4(3)}{2} - 3(3) + 5

\frac{-12}{2} - 9 + 5

-6 - 9 + 5

-15 + 5

-10

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1st. (2 root 2 + root 3 ) ( 2 root 3 - root 2)
satela [25.4K]

Answer:

1st: 3*root6 + 5

2nd: 35*root2 + 115

3rd: 24*root2 - 20*root6 + 15*root3 - 18

4th: 17*root6 - 38

5th: 13*root10 - 42

Step-by-step explanation:

To simplify these expressions we need to use the distributive property:

(a + b) * (c + d) = ac + ad + bc + bd

So simplifying each expression, we have:

1st.

(2 root 2 + root 3 ) ( 2 root 3 - root 2)

= 4*root6 - 2*2 + 2*3 - root6

= 3*root6 - 4 + 9

= 3*root6 + 5

2nd.

(root 5 + 2 root 10) (3 root 5 + root 10)

= 3 * 5 + root50 + 6*root50 + 2*10

= 15 + 5*root2 + 30*root2 + 100

= 35*root2 + 115

3rd.

(4 root 6 - 3 root 3) (2 root 3 - 5)

= 8*root18 - 20*root6 - 6*3 + 15root3

= 24*root2 - 20*root6 + 15*root3 - 18

4rd.

(6 root 3 - 5 root 2 ) (2 root 2 - root 3)

= 12*root6 - 6*3 - 10*2 + 5*root6

= 17*root6 - 18 - 20

= 17*root6 - 38

5th.

(root 10 - 3 ) ( 4 - 3 root 10)

= 4*root10 - 3*10 - 12 + 9*root10

= 13*root10 - 30 - 12

= 13*root10 - 42

8 0
3 years ago
3<br>Evaluate (1/2)<br><br><br>plzzz helpppp meeee​
larisa [96]

Answer:

0.5

Step-by-step explanation:

1/2 is one half, and if you divide 1 by 2 using long division you get 0.5

6 0
3 years ago
(10+-7 - -2) / (-2 - -1)
Scrat [10]

Nice use of brackets. We know exactly what you mean.

(10 - 7 + 2) / (-2 + 1) Notice that with an even number of - signs, you get a plus and with and odd number you get a minus.

(5) / (-1) = - 5 answer

Edit

Numerator

10 does not change.

+ - 7 Here a plus and a minus are put together. There is 1 minus sign which is an odd number of minus signs so the 7 is minus

- - 2 Here there are 2 minus signs. They become plus because 2 is even, and an even number of minuses become a plus so you have +2

10 - 7 + 2 = 5

Denominator

-2 does not change. It remains minus 2.

- - 1 There are 2 minus signs so this becomes plus 1.

- 2 + 1 = - 1

Numerator over denominator = 5/-1 = - 5. I'll probably run out of editing time. If you still don't understand, try and pinpoint the problem and we'll keep trying until you do see it. This question is worth it.

4 0
3 years ago
Read 2 more answers
write the equation of a line that includes the point (1,5) and has a slope of 3 in slope intercept form.
lina2011 [118]
Y=3x+? (1,5)
5=3(1)+?
5=3+?

y=3x+2

7 0
3 years ago
Find x, y, and z<br><br> WILL GIVE BRAINLIEST ANSWER
liq [111]

Answer:

i mean i think its B

Step-by-step explanation:

but if this is incorrect i apologize

6 0
3 years ago
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