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3 years ago

Please help w 6b!! :-)

Mathematics

2 answers:

Alinara [238K]3 years ago

6 0

y = 2 or y = 2 + i or y = 2 - 1

marin [14]3 years ago

6 0

Answer:

y=2 or y=4 or y=5

Step-by-step explanation:

Please see the attached picture for full solution.

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**A rock dropped from a 100 foot tower.

mars1129 [50]

Answer:

2.83 s

Step-by-step explanation:

We are given that

$h(t)=-16t^2+10t+100$

When a rock reached the ground then h(t)=0

$-16t^2+10t+100=0$

$16t^2-10t-100=0$

Using quadratic formula

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$t=\frac{10\pm\sqrt{(-10)^2-4\times 16\times (-100)}}{2(16)}$

$t=\frac{10\pm\sqrt{100+6400}}{32}$

$t=\frac{10+\sqrt{6500}}{32}=2.83$

$t=\frac{10-\sqrt{6500}}{32}=-2.2$

Time cannot be negative .Therefore, negative value of t can not be possible.

Hence, the rock takes 2.83 sec to reach the ground.

8 0

3 years ago

A quadratic function has zeros -7 and 9. What are the linear factors of the function?

garik1379 [7]

Answer:

(x+7)(x-9) = 0

Step-by-step explanation:

x + 7 = 0

x = -7

x - 9 = 0

x = 9

4 0

3 years ago

Abigail and Spencer calculate the slope of the line between the points (3,-1) and (5,4) in different ways. Abigail calculates th

Annette [7]

Abigail and Spencer are correct, Lauren is incorrect.

8 0

2 years ago

An online video game site charges a $10 membership fee and a $6 monthly cost. Another game site charges $6 membership and a $8 m

Romashka [77]

Answer:

SO... whats the actual question?

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Juan ran of a mile 2/5 every 4/7 of an hour. Find Juan’s rate in miles per hour

AfilCa [17]

Answer:

Juan runs 7/10 of a mile every hour

Step-by-step explanation:

First find out how much he ran every 1/7 of an hour

2/5 x 1/4 = 4/7 x 1/4

1/10 = 1/7

1/10 x 7 = 1/7 x 7

7/10 = 1

8 0

2 years ago