3 years ago

11. Ben is saving money to buy a TV that costs $495,

Mathematics

1 answer:

Nataliya [291]3 years ago

3 0

65x+75=495
-75 -75
65x=420
65/65 420/65
X=6.46

You might be interested in

For the graphed exponential equation, calculate the average rate of change from x = 0 to x = 1.

777dan777 [17]

The average rate of change is 4x

6 0

3 years ago

Read 2 more answers

267.26 rounded to the nearest tenth

Lady_Fox [76]

267.3
1 2 3 4 STAYS THE SAME
5 6 7 8 9 ROUNDS UP

6 0

3 years ago

Is this the right answer if not please tell me whats the right answer

Rufina [12.5K]

Yeah it looks like it’s right

6 0

2 years ago

Read 2 more answers

A water balloon is 5 feet above the ground when Sally launches it into the air. Use the quadratic equation 0 = -t^2 + 4t + 5 to

rodikova [14]

Answer:

$t=5\ sec$

Step-by-step explanation:

we have

$-t^{2} +4t+5=0$

Solve the quadratic equation to find the zero's or x-intercepts

Remember that

The x-intercepts are the values of x when the value of y is equal to zero ( water balloon reach the ground)

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-t^{2} +4t+5=0$

$a=-1\\b=4\\c=5$

substitute in the formula

$t=\frac{-4(+/-)\sqrt{4^{2}-4(-1)(5)}} {2(-1)}$

$t=\frac{-4(+/-)\sqrt{36}} {-2}$

$t=\frac{-4(+/-)6} {-2}$

$t=\frac{-4(+)6} {-2}=-1$

$t=\frac{-4(-)6} {-2}=5$

therefore

the solution is $t=5\ sec$

7 0

3 years ago

Read 2 more answers

Pls Help Me With This Question! It's 8th Grade Math!

Mademuasel [1]

Answer:

y= 4/3x

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers