All categories

2 years ago

Midpoint and line length

Mathematics

1 answer:

Hatshy [7]2 years ago

7 0

Grade level is this. and in my opinion I think it c because the grade level was midpoint at the section?

You might be interested in

A couple want to buy a house that costs $542 000. They pay a 20% deposit and borrow the rest of

Tanya [424]

Answer:

$146.00 a month I hope that's what you're look for

Step-by-step explanation:

go to Khan academy they give free math explainations

6 0

1 year ago

A fastball is hit straight up over home plate. The ball's height, h (in feet), from the ground is modeled by ℎ = −16푡 ଶ+103푡+5 w

Liono4ka [1.6K]

Question:

A fastball is hit straight up over home plate. The ball's height, h (in feet), from the ground is modeled by h(t)=-16t^2+80t+5, where t is measured in seconds. Write an equation to determine how long it will take for the ball to reach the ground.

Answer:

$t = 5.0625$

Step-by-step explanation:

Given

$h(t)=-16t^2+80t+5$

Required

Find t when the ball hits the ground

This implies that h(t) = 0

So, we have:

$0=-16t^2+80t+5$

Reorder

$-16t^2+80t+5 = 0$

Using quadratic formula, we have:

$t = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}$

Where

$a = -16$ $b =80$ $c = 5$

So, we have:

$t = \frac{-80\±\sqrt{80^2 - 4*-16*5}}{2*-16}$

$t = \frac{-80\±\sqrt{6400 +320}}{-32}$

$t = \frac{-80\±\sqrt{6720}}{-32}$

$t = \frac{-80\±82.0}{-32}$

This gives:

$t = \frac{-80+82.0}{-32}$ or $t = \frac{-80-82.0}{-32}$

$t = \frac{2}{-32}$ or $t = \frac{-162}{-32}$

$t = -\frac{2}{32}$ or $t = \frac{162}{32}$

But time can not be negative.

So, we have:

$t = \frac{162}{32}$

$t = 5.0625$

<em>Hence, time to hit the ground is 5.0625 seconds</em>

3 0

2 years ago

If the frequencies of all possible outcomes of an event are the same the distribution is

marusya05 [52]

1. D
2. C
3. B
4. C
5. C
6. D

5 0

2 years ago

Noodles are packaged in boxes that measure 18 cm by

Dafna11 [192]

Answer:

Its 4.54 cm

Step-by-step explanation:

on Edge

7 0

2 years ago

Write an equation of a line that goes through the point (-9, 3), and is perpendicular to the line 3x + y = 5

Vlad [161]

To find the slope of the line, first find the slope of 3x + y = 5, and then its opposite reciprocal.

3x + y = 5
y = -3x + 5
the slope of 3x + y = 5 is -3.

the slope is -3, so the opposite reciprocal slope is 1/3.

the equation of any line is y = ax + b
to find this line, y = 3, x = -9, and the slope is 1/3.

3 = -9a + b
3 = -9 (1/3) + b
3 = -3 +b
b = 6

substitute a and b into the equation
y = ax + b
y = 1/3x + 6

the equation of the line is y = 1/3x + 6.

3 0

2 years ago