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pav-90 [236]
3 years ago
13

What is the value of X that makes equation true? -5(2x - 3) + 4x = -3x + 6

Mathematics
1 answer:
Alisiya [41]3 years ago
6 0

Answer:

x=3

Step-by-step explanation:

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Suppose y varies inversely with x. If y = 150 when x = 2, find y when x = 25.
IceJOKER [234]

Answer is 12

I hope this helps enough

7 0
4 years ago
Please prove this........​
Crazy boy [7]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Given: A + B + C = π    →     C = π - (A + B)

                                    → sin C = sin(π - (A + B))       cos C = sin(π - (A + B))

                                    → sin C = sin (A + B)              cos C = - cos(A + B)

Use the following Sum to Product Identity:

sin A + sin B = 2 cos[(A + B)/2] · sin [(A - B)/2]

cos A + cos B = 2 cos[(A + B)/2] · cos [(A - B)/2]

Use the following Double Angle Identity:

sin 2A = 2 sin A · cos A

<u>Proof LHS → RHS</u>

LHS:                        (sin 2A + sin 2B) + sin 2C

\text{Sum to Product:}\qquad 2\sin\bigg(\dfrac{2A+2B}{2}\bigg)\cdot \cos \bigg(\dfrac{2A - 2B}{2}\bigg)-\sin 2C

\text{Double Angle:}\qquad 2\sin\bigg(\dfrac{2A+2B}{2}\bigg)\cdot \cos \bigg(\dfrac{2A - 2B}{2}\bigg)-2\sin C\cdot \cos C

\text{Simplify:}\qquad \qquad 2\sin (A + B)\cdot \cos (A - B)-2\sin C\cdot \cos C

\text{Given:}\qquad \qquad \quad 2\sin C\cdot \cos (A - B)+2\sin C\cdot \cos (A+B)

\text{Factor:}\qquad \qquad \qquad 2\sin C\cdot [\cos (A-B)+\cos (A+B)]

\text{Sum to Product:}\qquad 2\sin C\cdot 2\cos A\cdot \cos B

\text{Simplify:}\qquad \qquad 4\cos A\cdot \cos B \cdot \sin C

LHS = RHS: 4 cos A · cos B · sin C = 4 cos A · cos B · sin C    \checkmark

7 0
3 years ago
Cassandra spends 6.75 hours each day at school.<br> Round the amount of time to the nearest hour.
Alja [10]

Answer:

6.75 round to 7

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
9.5 less than a number n equals 27
LuckyWell [14K]

Answer:

convert 9.5

n-9=27

Step-by-step explanation:

I converted it for you.

7 0
3 years ago
Someone Please help me..What must the value of x be in order for the figures below to be similar?
Ksenya-84 [330]

Answer:

16 cm

Step-by-step explanation:

x+x

8+8

16 cm

therefore 16 cm must be the value of x be in order for the figures below to be similar

3 0
3 years ago
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