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4 years ago

Find the solution set for the equation. Use properties to justify your solution 2x-3=9-x

Mathematics

1 answer:

Nana76 [90]4 years ago

7 0

Answer:

x=4

Step-by-step explanation:

2x-3=9-x

1. add 3 to -3 and 9, which will cancel out -3 and leave you with 2x=12-x

2. add x to 2x and -x which will cancel out -x and leave you with 3x (there will always be a 1 in front of x if it has no variable in front of it x=1) which will leave you with 3x=12

3. divide 12 by 3 and you get 4..so x=4

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A total of about 230 million turkeys were raised in the U.S. last year. Were more than one-quarter of them raised in Minesota if

pochemuha

No, 17.39% were raised in Minnesota.

You can find this by dividing 40,000,000 by 230,000,000 and then converting to a percent by multiplying by 100.

40,000,000/230,000,000=.1739
.1739 x 100= 17.39%

8 0

3 years ago

A survey reveals that the sales of smartphones is increasing considerably. The average annual sales of smartphones, in million u

EleoNora [17]

Answer:

when the survey was initially conducted the average sales of smartphones was 1.7 million units

Step-by-step explanation:

The average annual sales of smartphones is given by function

$P(n)= 1.7 (b)^n$

Exponential growth function is given by

$f(x)= ab^x$

Where a= initial value

b = growth factor , b= 1+r where 'r' is the growth rate

x is the time period

Now we compare f(x) with P(n)

the value of a= 1.7 that is the initial value.

So we can say, when the survey was initially conducted the average sales of smartphones was 1.7 million units

8 0

3 years ago

4a – 16 = a - 15 how do I solve

miv72 [106K]

Answer:

a = $\frac{1}{3}$

Step-by-step explanation:

4a -16 = a - 15

both left and right -a

then

4a - 16 -a = a - 15 -a

then

4a -a -16 = a -a -15

then

3a -16 = -15

both left and right + 16

then

3a -16 + 16 = -15 + 16

then

3a = 1

both left and right ÷3

then

3a ÷ 3 =1 ÷ 3

then

a = $\frac{1}{3}$

8 0

4 years ago

Graph a line through (2,-5) and have a slope of -4

kirill115 [55]

im sorry: In order to solve the inequality -x > 8, which of the following steps must be done?

7 0

3 years ago

A ball is thrown from an initial height of 6 feet with an initial upward velocity of 23ft/s . The ball's height h (in feet) afte

Diano4ka-milaya [45]

There's a lot of extra information here. All you are really concerned with is solving the polynomial for roots. You want t when h = 14. So let's do it:

$14 = 6+23t-16t^2$
$8=23t-16t^2$

Rearranging to make it simpler to put into a quadratic form:
$0 = -16t^2+23t-8$

Now, let's plug it into the quadratic equation:
$\frac{-23+ \sqrt{(23)^2-4(-16)(-8)} }{2(-16)}$
and
$\frac{-23- \sqrt{(23)^2-4(-16)(-8)} }{2(-16)}$

Solving the quadratic gives us:
0.5899 and 0.8476

So, your answer is: h = 14 when t = 0.5899 or t = 0.8476

6 0

4 years ago