All categories

3 years ago

Help plz : 4x-2(x-3)=10+(-9)

Mathematics

2 answers:

Dominik [7]3 years ago

7 0

Distribute -2(x - 3)

4x - 2x + 6 = 10 + -9

Simplify

2x = -5

x = -2.5

vodomira [7]3 years ago

7 0

4x-2(x-3)=10+(-9)
or, 4x-2x-2(-3)=10-9
or, 2x+6=1
or, 2x=1-6
or, 2x=-5
or, x=-5/2
or, x=-2.5

You might be interested in

What is cos theta when sin theta = sqrt 2/3

Fittoniya [83]

Answer:

Value of cosθ is ±√7/3 .

Step-by-step explanation:

According to the Question , value of :

$\red{\implies sin\theta = \dfrac{\sqrt2}{3}}$

And , we know the identity of sine and cosine as ,

$\boxed{\pink{\sf\implies sin^2\theta + cos^2\theta = 1} }$

Using , this identity we have ;

$\implies sin^2\theta + cos^2\theta = 1 \\\\\implies \bigg( \dfrac{\sqrt2}{3}\bigg)^2 + cos^2\theta = 1 \\\\\implies \dfrac{2}{9} + cos^2\theta = 1 \\\\\implies cos^2\theta = 1 - \dfrac{2}{9} \\\\\implies cos^2\theta = \dfrac{9-2}{9} \\\\\implies cos\theta = \sqrt{\dfrac{7}{9}} \\\\\underline{\boxed{\blue{\bf \implies cos\theta = \pm \dfrac{\sqrt 7 }{3}}}}$

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be :

$\boxed{\orange{\bf \implies cos\theta =-\dfrac{\sqrt7}{3}}}$

3 0

2 years ago

I have a total of 29 coins-they are quarters and dimes. Together they amount to $5.60. How many quarters do I have? How many dim

Anna007 [38]

450/25= 18

where 450 is $4.50 and 25 is one quarter. there will be 18 quarters.

560-450=110

110/10=11

where 110 is $1.10 and 10 is one dime. there will be 11 dimes.

11+18= 29

where 11 is total number of dimes and 18 is total number of quarters. and 29 is total number of coins

6 0

2 years ago

Read 2 more answers

X/2 -15= -7 in verbal expression

Vsevolod [243]

X/2-15=-7
x-30=-14
x=-14+30
x=16

4 0

2 years ago

Simplify y -2/ 3y4 help me please!

adell [148]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How does kinetic energy affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at

Aleks04 [339]

The vehicle traveling 60 mph is going 4 times as fast. the brakes must do an amount of work that's equal to the original kinetic energy. the brakes exert the same amount of force no matter what the case is, so the stopping distance will be four times as long for the car going 60 mph compared to the car going 30 mph.

8 0

2 years ago