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trapecia [35]
4 years ago
5

Solve for x. Write the smaller solution first, and the larger solution second. (x−7)(−4x−2)=0

Mathematics
1 answer:
Fed [463]4 years ago
5 0
Solve for x:
(-4 x - 2) (x - 7) = 0

Split into two equations:
-4 x - 2 = 0 or x - 7 = 0

Factor constant terms from the left hand side:
-2 (2 x + 1) = 0 or x - 7 = 0

Divide both sides by -2:
2 x + 1 = 0 or x - 7 = 0

Subtract 1 from both sides:
2 x = -1 or x - 7 = 0

Divide both sides by 2:
x = -1/2 or x - 7 = 0

Add 7 to both sides:
Answer: x = -1/2 or x = 7
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Prove that if the set of vectors {u1, u2, u3} is linearly dependent and u4 is any vector, then the set {u1, u2, u3, u4} is linea
Lesechka [4]

Answer with Step-by-step explanation:

We are given that the set of vectors{u_1,u_2,u_3} is lineraly dependent set .

We have to prove that the set {u_1,u_2,u_3,u_4} is linearly dependent .

Linearly dependent vectors : If the vectors u_1,u_2.u_3,u_4

are linearly  dependent therefore the linear combination

a_1u_1+a_2u_2+a_3u_3+a_4u_4=0

Then ,there exit a scalar which is not equal to zero .

Let a_1\neq0 then the vector u_1 will be zero and remaining  other vectors are not zero.

Proof:

When u_1,u_2,u_3 are linearly dependent vectors therefore, linear combination of vectors of given set

a_1u_1+a_2u_2+a_3u_3=0

By definition of linearly dependent vector

There exist a scalar which is not equal to zero.

Suppose a_1\neq 0 then  u_1=0

The linear combination of the set {u_1,u_2,u_3,u_4}

a_1u_1+a_2u_2+a_3u_3+a_4u_4=0

When a_1\neq0\; and\; u_1=0

Therefore,the set {u_1,u_2,u_3,u_4} is linearly dependent because it contain a vector which is zero.

Hence, proved .

5 0
3 years ago
I don’t know how to find the slope
Maksim231197 [3]
Slope is just tangent of the graph
8 0
3 years ago
What is the answer to this question ?
Drupady [299]
If there is a really short way of doing this, I don't see it. The only way I know to do it is to find the third angle of both triangles. 

So for F the third angle for each of the pairs is
left side: 180 - (51 + 30) = 180 - 81 = 99
right side: 180 - (109 + 30) = 180 - 139 = 41
This is not the answer.

G
180 - (92 + 70) = 180 - 162 = 18
180 - (28 + 70) = 180 - 98 = 82
This is not the answer either.

H
180- (58 + 30) = 180 - (88) = 92
180 - (90  + 58) = 180 - 148 = 32
Not at all.

180 - (35 + 82) = 180 - 117 = 63
180 - (82 + 63) = 180 - 145 = 35
This pair has a third angle that is equal to the other triangle's pair. This is your answer.

7 0
4 years ago
NEED HELP NOW 100 POINTS NEED 1 PARAGRAPH EACH EXPLAINING QUESTIONS 9 AND 10 WILL MARK BRAINLIEST ANSWER!!!
amm1812
9) Area of Figure = Area of rectangle + area of triangle

A = 17 * 22 + (1/2 * 12 * 19)

A = 374 + 114

A = 488 cm²

10) Area of Figure = Area of rectangle + area of triangle

A = 8 * 4 + (1/2 * 3*4)
A = 32 + 6

A = 38 cm²

Hope this helps!
7 0
3 years ago
Read 2 more answers
Which of the following transformations would prove that the corresponding angles 1. a translation of line AI by the vector BF<br
Sedaia [141]

Answer:

elemenope

Step-by-step explanation:

6 0
3 years ago
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