8 and 9 because 8 x 8= 64 and 9 x 9 = 81. Between 64 and 81 is 75.
The Simplification of the following expression is;
- x = 3
- m = -30/7
- v = -8.8
- x = 3
- u = -2.49
- a = -3/70
- p = -5
- t = 9
<h3>Simplification</h3>
2.1x - 1 - 4.2x = 5.3
2.1x - 4.2x = 5.3 + 1
- 2.1x = 6.3
x = 6.3/-2.1
x = 3
7/8m - 4/7 - 5/6m = - 3/4
7/8m - 5/6m = -3/4 + 4/7
21m-20m/24 = -21+16/28
1/24m = -5/28
m = -5/28 ÷ 1/24
= -5/28 × 24/1
= -120/28
m = -30/7
4.3v + 10.75 - 4v = 8.11
0.3v = 8.11 - 10.75
0.3v = -2.64
v = -2.64/0.3
v = -8.8
9/7 + 9/7x - 6/7x =0
9/7x - 6/7x = - 9/7
(9-6)x /7 = 9/7
3/7x = 9/7
x = 9/7 ÷ 3/7
= 9/7 × 7/3
= 9/3
x = 3
6.9u - 2 - 3.2u - 10 = 2.8
3.7u = 2.8 - 12
3.7u = -9.2
u = -9.2/3.7
u = -2.49
8/5 = - 4a + 7/5 - 2/3a
8/5 - 7/5 = -4a - 2/3a
8-7/5 = -12a-2a/3
1/5 = -14/3a
a = 1/5 ÷ -14/3
= 1/5 × -3/14
a = -3/70
8p + 6 - 4p = -14
4p = -14 - 6
4p = -20
p = -20/4
p = -5
7 - (5t - 13) = -25
7 - 5t + 13 = -25
-5t + 20 = -25
-5t = -25 - 20
-5t = -45
t = -45/-5
t = 9
Learn more about simplification:
brainly.com/question/723406
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What number is multiplied by 2 in left parentheses to get 8 in original expression? That is j, the coefficient for x^2. Follow the same pattern to find k, the middle coefficient.
j= x^2 coefficient
k= x coefficient
= 8x^3 – 125
= (2x−5)(4x^2+10x+25)
ANSWER: j= 4; k= 10
Hope this helps! :)
We know that
<span>4 1/2 gallons-------> (4+2+1)/2-----> 9/2 gallons
</span>
1 <span> wall in the house will need --------> 3/4 of a gallon of paint
</span> X wall-----------------------------------> 9/2 gallons
x=(9/2)/(3/4)----> 9*4/2*3-----> 36/6----> 6 walls
the answer is
6 walls
Answer:
the first choice 2 ; -2 ; 6 :-6
Step-by-step explanation:
1) method : you can put this values 2 ; -2 ; 6 :-6 you are 0
2) method you can solve this equation
x^4-40x^2+144=0
let : x² = t and t ≥ 0
t² -40t +144 = 0
Δ = b²- 4ac a= 1 b = - 40 c = 144
Δ =(-40)²- 4(1)(144= 1600 -576 = 1024=32²
t1 = (40+32)/2 = 36 = 6²
t1 = (40-32)/2 = 4 = 2²
but : x² = t and t ≥ 0
1)case : x² = 6² x = 6 or x= -6
2() case : x² =2² x = 2 or x= -2