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Dominik [7]
4 years ago
6

Paul creates the diagram to help him factor 4x2 + x – 5 by using double grouping. His diagram is incomplete. Which terms should

Paul write in squares M1 and M2? 5x and −4x –5x and 4x –2x and 10x 2x and −10x
Mathematics
2 answers:
7nadin3 [17]4 years ago
5 0
4x^2 + x - 5 = 4x^2 + 5x - 4x - 5

Therefore, required solution is 5x and -4x.
elena-14-01-66 [18.8K]4 years ago
3 0

Answer:

5x and -4x

Step-by-step explanation:

4x^2 + x - 5

4x^2 + 1x - 5

To find out factors we need to multiply 4 and -5 that is -20

Now product is -20 and sum is +1

We need to find out two factors whose product is -20 and sum is +1

5 times -4 = -20

5 + (-4) = +1

So +1x can be written as +5x - 4x

4x^2 + 1x - 5 can be written as 4x^2+5x - 4x- 5

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In triangle △JKL, ∠JKL is right angle, and KM is an altitude. JK=24 and JM=18, find JL.
PolarNik [594]

Answer:

JL ≈ 32  

Step-by-step explanation:

The triangle JKL  has a side of JK = 24 and we are asked to find side JL. The triangle JKL is a right angle triangle.

Let us find side the angle J first from the  triangle JKM. Angle JMN is 90°(angle on a straight line).

using the cosine ratio

cos J = adjacent/hypotenuse

cos J = 18/24

cos J = 0.75

J = cos⁻¹ 0.75

J = 41.4096221093

J ≈ 41.41°

Let us find the third angle L of the triangle JKL .Sum of angle in a triangle = 180°. Therefore,  180 - 41.41 - 90 = 48.59

Angle L = 48.59 °.

Using sine ratio

sin 48.59 ° = opposite/hypotenuse

sin 48.59 ° = 24/JL

cross multiply

JL sin 48.59 ° = 24

divide both sides by sin 48.59 °

JL = 24/sin 48.59 °

JL = 24/0.74999563751

JL = 32.0001861339

JL ≈ 32  

8 0
3 years ago
How many solutions does 7x -10 = 7(x+3)
inessss [21]

Answer: The answer to this question is that there is no solution to that problem

Step-by-step explanation:

4 0
3 years ago
What is 0.0000137 in scientific notation
zhannawk [14.2K]

Answer:

The last option = 1.37 × 10 race to -5

3 0
3 years ago
Please please do this
notka56 [123]

Answer:

1: 12 and 48

2: 45 and 15

3: 2 and 58

Step-by-step explanation:

60-12=38

60-15=45

60-2= 58

5 0
3 years ago
A. Graph A<br> B. Graph B<br> C. Graph C<br> D. Graph D
FromTheMoon [43]

Answer: graph A

explanation: srry if im not much help im new to this

5 0
3 years ago
Read 2 more answers
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