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Fynjy0 [20]
3 years ago
11

7. Evaluate this expression if x=-2* 3x2 - 4x

Mathematics
1 answer:
natali 33 [55]3 years ago
8 0

Answer: x=0 or x= -5/6

Step-by-step explanation: x=((−2)(3))(x2)−4x

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What is the area of the triangle
Anna11 [10]

Answer:

10

Step-by-step explanation:

1. The area of triangle is = (A*h)/2, where h is the height grounded on side A.

2. Given the height 5 and the side 4 we get S(area)=(5*4)/2=10.

4 0
3 years ago
Factor: 81y^2-49<br> Your answer
oksian1 [2.3K]

Answer:(9y-7)(9y+7)

Step-by-step explanation:

81y^2-49

=(9y)^2-(7)^2

=(9y-7)(9y+7)

4 0
3 years ago
1/2x+5=10 what is the number of the variable
ki77a [65]
I think what your asking for is that x=10
7 0
3 years ago
Read 2 more answers
Please help I'm not good with fractions.<br><br> 2 ÷ 12 and 2/3x
MrRa [10]
1/6 and 0.66666666667x
6 0
3 years ago
How do you solve the equation -7/8k=21
loris [4]
- \frac{7}{8} k = 21

First, simplify \frac{7}{8} k to \frac{7k}{8} / Your problem should look like: -\frac{7k}{8} = 21
Second, multiply both sides by 8. / Your problem should look like: -7k = 167
Third, divide both sides by -7. / Your problem should look like: k = \frac{168}{-7}
Fourth, simplify \frac{168}{-7} to \frac{168}{7} / Your problem should look like: k = - \frac{168}{7}
Fifth, simplify \frac{168}{7} to 24. / Your problem should look like: k = -24

Answer: k = -24

4 0
3 years ago
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