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3 years ago

If 3x+9=(10+x) then what does x equal?

2 answers:

7 0

Remember you can do anything to an equation as long as you do it to both sides

3x+9=10+x
minus x both sides
3x-x+9=10+x-x
2x+9=10+0
2x+9=10
minus 9 both sides
2x+9-9=10-9
2x+0=1
2x=1
divide both sides by 2
x=1/2

neonofarm [45]3 years ago

3 0

3x + 9 = 10 + x
2x +9 = 10
2x = 1
x = 1/2

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Which of the following points is on the graph of….

bonufazy [111]

we have the equation

$y=\log_{\frac{1}{2}}x$

Remember that

If an ordered pair is on the graph of the given function, then the ordered pair must satisfy the given function

Verify each option

N 1

(0,1)

x=0, y=1

Is not true, because the log of zero is undefined

N 2

(1,1/2)

x=1, y=1/2

Is not true, because the log of 1 is zero

N 3

(1/2,1)

$y=\operatorname{\log}_{\frac{1}{2}}\frac{1}{2}=1$

Is true

therefore

<h2>The answer is (1/2,1)</h2>

8 0

1 year ago

Every day, Larry did the same number of sit-ups. If he did 1,225 sit-ups each week, how many sit-ups did he do each day?

babymother [125]

Hello!

To find the number of sit-ups Larry did each day, divide 1,225 sit-ups by the numbers of days in a week, which is seven days.

1225 sit-ups / 7 days = 175 sit-ups/day

Therefore, Larry did 175 sit-ups per day.

4 0

4 years ago

Find the perimeter of quadrilateral PQRS with the vertices P(2,4), Q(2,3), R(-2,-2), and S(-2,3).

storchak [24]

Answer:

$P=16.53\ units$

Step-by-step explanation:

we know that

The perimeter of quadrilateral PQRS is equal to the sum of its four length sides

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

the vertices P(2,4), Q(2,3), R(-2,-2), and S(-2,3)

step 1

Find the distance PQ

P(2,4), Q(2,3)

substitute in the formula

$d=\sqrt{(3-4)^{2}+(2-2)^{2}}$

$d=\sqrt{(-1)^{2}+(0)^{2}}$

$d=\sqrt{1}$

$dPQ=1\ unit$

step 2

Find the distance QR

Q(2,3), R(-2,-2)

substitute in the formula

$d=\sqrt{(-2-3)^{2}+(-2-2)^{2}}$

$d=\sqrt{(-5)^{2}+(-4)^{2}}$

$dQR=\sqrt{41}\ units$

step 3

Find the distance RS

R(-2,-2), and S(-2,3)

substitute in the formula

$d=\sqrt{(3+2)^{2}+(-2+2)^{2}}$

$d=\sqrt{(5)^{2}+(0)^{2}}$

$dRS=5\ units$

step 4

Find the distance PS

P(2,4), S(-2,3)

substitute in the formula

$d=\sqrt{(3-4)^{2}+(-2-2)^{2}}$

$d=\sqrt{(-1)^{2}+(-4)^{2}}$

$dPS=\sqrt{17}\ units$

step 5

Find the perimeter

$P=PQ+QR+RS+PS$

substitute the values

$P=1+\sqrt{41}+5+\sqrt{17}$

$P=6+\sqrt{41}+\sqrt{17}$

$P=16.53\ units$

5 0

4 years ago

The same type of television is being sold at two different stores. Store A is selling the television for $ 800, which is $ 120 m

erma4kov [3.2K]

Answer: $340

Step-by-step explanation:

$800 - $120 = $680

1/2 of $680 is $340

Hope this helps!

7 0

4 years ago

Guys I need your help which one is true and why can you give me explain please.

irina [24]

What's the question?

7 0

3 years ago