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2 years ago

What is the slope of a line that passes through the points (–3, 2) and (–6, 5)?

Mathematics

1 answer:

lilavasa [31]2 years ago

8 0

Answer:

-1

Step-by-step explanation:

just do y2-y1 over x2-x1.

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HELP !!!!!!!!!!!!!!!!!!!!!PLEASE

Nana76 [90]

Answer:

uhbsu is ysab nq17y 8

Step-by-step explanation:

5 0

3 years ago

Please help me with this one. I need help right away.

lana66690 [7]

b(1 -2) i just too the test

6 0

3 years ago

The graph h = −16t^2 + 25t + 5 models the height and time of a ball that was thrown off of a building where h is the height in f

Thepotemich [5.8K]

Answer:

part 1) 0.78 seconds

part 2) 1.74 seconds

Step-by-step explanation:

step 1

At about what time did the ball reach the maximum?

Let

h ----> the height of a ball in feet

t ---> the time in seconds

we have

$h(t)=-16t^{2}+25t+5$

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

The x-coordinate of the vertex represent the time when the ball reach the maximum

Find the vertex

Convert the equation in vertex form

Factor -16

$h(t)=-16(t^{2}-\frac{25}{16}t)+5$

Complete the square

$h(t)=-16(t^{2}-\frac{25}{16}t+\frac{625}{1,024})+5+\frac{625}{64}$

$h(t)=-16(t^{2}-\frac{25}{16}t+\frac{625}{1,024})+\frac{945}{64}\\h(t)=-16(t^{2}-\frac{25}{16}t+\frac{625}{1,024})+\frac{945}{64}$

Rewrite as perfect squares

$h(t)=-16(t-\frac{25}{32})^{2}+\frac{945}{64}$

The vertex is the point $(\frac{25}{32},\frac{945}{64})$

therefore

The time when the ball reach the maximum is 25/32 sec or 0.78 sec

step 2

At about what time did the ball reach the minimum?

we know that

The ball reach the minimum when the the ball reach the ground (h=0)

For h=0

$0=-16(t-\frac{25}{32})^{2}+\frac{945}{64}$

$16(t-\frac{25}{32})^{2}=\frac{945}{64}$

$(t-\frac{25}{32})^{2}=\frac{945}{1,024}$

square root both sides

$(t-\frac{25}{32})=\pm\frac{\sqrt{945}}{32}$

$t=\pm\frac{\sqrt{945}}{32}+\frac{25}{32}$

the positive value is

$t=\frac{\sqrt{945}}{32}+\frac{25}{32}=1.74\ sec$

8 0

3 years ago

Use the order of operations to simplify 8.6 - 4 × 2 + 3/10

Ainat [17]

The answer is A!
Explanation:
43/5-4x2+3/10
Multiply the numbers——> 43/5-8+3/10
43/5-8+3/10=9/10

Hoped I help ! Mark me brainly if correct it would help a lot! Have a great day!

8 0

2 years ago

Read 2 more answers

Sarah received $55 for her birthday. She used some of that money to buy 3 shirts priced at m dollars each.

jolli1 [7]

Answer:

$55 - 3m$

Step-by-step explanation:

Sarah has $55

Her expenses are 3 shirts priced at $m each.

Total cost of 3 shirts at $m each would be the multiplication of each:

3 * m = 3m

The amount of money Sarah has left would be the total she had MINUS what she spent on 3 shirts. That would be:

Remaining Money = 55 - 3m

5 0

3 years ago