Simplifying Algebraic Exspressions 1) 9(-7b-5)

Answers

Answer 1

Answer: If you would like to simplify the algebraic expression, you can do this using the following steps:

9 * (- 7 * b - 5) = 9 * (- 7 * b) - 9 * 5 = - 63 * b - 45

The correct result would be - 63 * b - 45.

Answer 2

Answer: the correct result -63* b-45

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A sandbag is released from a hot air balloon that is 400ft above the ground. Using the falling object model, h = –16t2 + s, where h = height in feet, t = time in seconds, and s = initial height in feet, how long will it take for the sandbag to hit the ground?A.
25 seconds
B.
4 seconds
C.
5 seconds
D.
20 seconds

Answers

Answer:

It takes 5 seconds for the sandbag to hit the ground

Explanation:

Given:

Height at which the sand bag is released from the hot air balloon $= -400 f t$

To find:

Time taken for the sandbag to hit the ground, t =?

Solution:

The initial height =s

Initially the height will be 0

Hence $s=0$

the falling object model equation

$h=-16 t^(2)+s$

Substituting the values we get,

$h=-16 t^(2)+s$

$400=16 t^(2)$

$t^(2)=(400)/(16)$

$t^(2)=25$

$t=√(25)$

$t=5 \text { seconds }$

Result:

Thus it takes 5 seconds for the sandbag to hit the ground

to get into her tree house, annabeth rests a ladder against the tree. The top of the ladder is 13 feet above the ground. The base of the ladder is 3 from the tree. what is the slope of the ladder

Answers

about 13.34 feet is the slope of the ladder

2x +3y =12 Dan 3x-1y=7

Answers

2x+3y=12
3x-y=7

use subsituttion
make one of the equations equal to a placeholder
3x-y=7
subtract 7
3x-7-y=0
add y
3x-7=y
subsisute 3x-7 for y in first equation

2x+3(3x-7)=12
2x+9x-21=12
11x-21=12
add 21 to both sides
11x=33
divide both sides by 11
x=3

subsitute x for 3 in any equation
3x-7=y
3(3)-7=y
9-7=
2=y

x=3
y=2

2x+3y=12
3y=-2x+12
y=-2x/3+4

3x-1y=7
-1y=-3x+7
y=3x-7

A train traveled 210 miles in 3.5 hours to its first stop. It then continued on traveling another 130 miles in 2.5 hours. What was the average speed of the train for the entire journey

Answers

56.7 mph just a distance over time question, since they want the average speed you take the total distance divided by the total time

Daltons dad rode his bike 1 kilometer north,1 kilometer west, 1 kilometer south and 2 kilometers east. How many total kilometers will Daltons dad ride if he follows this path 9 times?

Answers

1+1+1+2=5
5x9=45
Therefore the total number of km is 45.

Answer:

Step-by-step explanation:

Whats the next number 0 3 8 15 24 35

Answers

45 or 46 I'm not sure.

the answer is 26 im kida sure

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