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Alexxx [7]
3 years ago
9

6 (3x-1)-10x if x=7 with work please :)

Mathematics
2 answers:
OleMash [197]3 years ago
7 0
6(3(7)-1) - 10(7)

6(21-1) - 70

6(20) - 70

120 - 70 

50
mixer [17]3 years ago
5 0
6(3(7)-1)-10(7)
6(20)-70
120-70
50
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What is the value of this expresion <br> 4(-6^2+ 3) - 2-1/2
lesya [120]

Answer: -134.5

Step-by-step explanation:

4(-6^2+3) - 2 - 1/2       Exponents first

4(-36 +3) - 2 - 1/2         Now solve the parentheses

4(-33) -2 -1/2

-132- 2 -1/2

-134 - 1/2 = -134.5

7 0
3 years ago
(8x² + 3x) - 4x² + x-4
serg [7]

Answer:

4x^2+4x-4

Step-by-step explanation:

8x^2 + 3x - 4x^2 + x - 4

= 8x^2 - 4x^2 + 3x + x - 4

= 4x^2 + 4x - 4

4 0
1 year ago
I need number 2 I need help fast
Semmy [17]

Answer:

B. 70

Step-by-step explanation:

<h3><u>look at the smaller triangle</u></h3>

its dimensions are :

45 , 35 , 24

<h3><u>look at the bigger triangle ( this includes the dimensions of the smaller one)</u></h3>

its dimensions are :

45 + 45 ,  x , 24 + 24

= 90 , x  , 48

from the dimensions given we can notice that :

<em>bigger triangle dimensions are  = 2 * smaller triangle dimensions</em>

<em></em>

therefore to find the value of x :

x = 35 * 2

<h3><u>x = 70</u></h3>

<u />

<h3><u>hence the answer is B ) 70 </u></h3>
4 0
3 years ago
A play station costs $500, but you want to only pay $450. How much discount in percents do you want?
Alexus [3.1K]

Answer:

You only want a 10% discount...

500 - 450 = 50  

50/500 = 1/10 = .1 = 10%

4 0
3 years ago
Read 2 more answers
Find the value of each variable in the parallelogram.
Nikitich [7]

Answer:

u = 4; v = 18

because this is a parallelogram

=> 2u + 2 = 5u - 10

6 = v/3

<=> 3u = 12

v = 6.3

<=> u = 4

v = 18

7 0
2 years ago
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