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aliina [53]
2 years ago
13

In a science test, Jamie solved 42 correct and 18 incorrect answers. What is the percentage of correct question?

Mathematics
2 answers:
uysha [10]2 years ago
4 0
It would have to be B
Slav-nsk [51]2 years ago
3 0

Answer:The answer is C.

Step-by-step explanation:

There are 60 questions total. (42+18)

You just turn the answers into decimals (.80, .75, .70, .40) and you multiply it by the total number of questions(60)

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If a football is thrown upward, its height above the
dybincka [34]

Answer:

a) s = -16t^{2} + 192t + 96

b) Height of the football after 2 seconds is 448 feet.

ii. The football would not hit the ground after 2 seconds.

Step-by-step explanation:

Given:

s = -16t^{2} + V_{o}t + s_{o}

where: s is the height of the football above the ground, t is the time, V_{o} is the initial velocity and s_{o} is the initial height.

The height of the building = V_{o} = 192 feet and the initial speed of the ball = s_{o} = 96 feet per second, then;

s = -16t^{2} + 192t + 96

a) The polynomial is given as:

s = -16t^{2} + 192t + 96

b) The height of the football when t = 2 seconds is;

s = -16(2) + 192(2) + 96

 = -32 + 384 + 96

 = -32 + 480

s = 448

The height of the football when t = 2 seconds is 448 feet.

ii. The football would not hit the ground after 2 seconds.

7 0
2 years ago
How do you turn a fraction into a decimal?
DochEvi [55]
Just divided the numerator(the top number) by the denominator(bottom number)
7 0
3 years ago
Bo is trying to find the height of a radio antenna on the roof of a local building. He stands at a horizontal distance of 20 met
Romashka-Z-Leto [24]

Answer:

12.5

Step-by-step explanation:

see attached image

8 0
2 years ago
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 5x+7=2y and
Luda [366]

Answer:

The correct option is option B. It has one solution, and it's x=-3

Step-by-step explanation:

We have the following system of equations:

5x+7 = 2y                        (1)

y-9x=23                            (2)

Step 1: Solve for 'y' in equation (2):

y-9x = 23

y = 9x + 23

Step 2: Substitute in equation (1):

5x + 7 = 2y

5x + 7 = 2(9x + 23)

5x + 7 = 18x + 46

Step 3: Solve for x:

7 - 46 = 18x - 5x

-39 = 13x

x= -3

So the correct option is option B. It has one solution, and it's x=-3

7 0
3 years ago
Read 2 more answers
Jordan and her family enter a race around a track. Jordan take 10 minutes to run a lap, her sister 12 minutes and Katie 20 minut
Nutka1998 [239]
They will be finished at 6:56
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3 years ago
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