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Ede4ka [16]
3 years ago
13

Can you help me with number 4 pleaseeeeeee

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0

Answer:

r=15-8 r=7

Step-by-step explanation:

You know for sure that there are 15 sandbags. You know that 8 of those sandbags are blue. If 8/15 are blue, then the other 7 must be red.

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The equation $y=-4.9t^2+3.5t+5$ describes the height (in meters) of a ball thrown upward at $3.5$ meters per second from $5$ met
Georgia [21]

Answer:

Step-by-step explanation:

The position function is

s(t)=-4.9t^2+3.5t+5 and if we are looking for the time t it takes for the ball to hit the ground, we are looking for the height of the ball when it is on the ground. Of course the height of anything on the ground is 0, so if we set s(t) = 0 and solve for t, we will find our answer.

0=-4.9t^2+3.5t+5 and factor that however you are currently factoring in class to get that

t = -.71428 seconds or

t = 1.42857 seconds (neither one of those is rational so they can't be expressed as fractions).

We all know that time will never be a negative value, so the time it takes this ball to hit the ground is

1.42857 seconds (round how you need to).

4 0
3 years ago
Karen karlin bought some large frames for $15 each and some small frames for $8 each at a closeout sale. if she bought 22 frames
BaLLatris [955]

small frames ($8): s

large frames ($15): L


Cost:        8s + 15L = 239   ⇒ 1(8s + 15L = 239)   ⇒    8s + 15L = 239  

Quantity:   s  +   L   = 22   ⇒  -8( s  +   L   = 22)   ⇒  <u> -8s   -8 L  = -176 </u>

                                                                                               7L  = 63

                                                                                                  L = 9

Quantity:   s + L = 22 ⇒   s + (9) = 22   ⇒   s = 13

Answer: 13 small frames, 9 Large frames

7 0
3 years ago
Read 2 more answers
Please help me with this D:
weeeeeb [17]

Answer:

96

Step-by-step explanation:

7 fridge fggg difficult grab fyi to figure

5 0
3 years ago
Look at this inequality: 12−4x ≤ 20
SSSSS [86.1K]

Answer: The last line is the answer

12 - 4x <u><</u> 20

20 - 12 = 8

-4x = 8

-4/4 = 8/-4

x = -2

New inequality: x <u>></u> -2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is 0.38 cups as a fraction??
Alexandra [31]
The answer is 38 over 100 cups. Simplified = 19 over 50. All you do to get the answer is put 38 over 100. Then divide 38 by 2. Then divide 100 by 2.
4 0
3 years ago
Read 2 more answers
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