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OLEGan [10]
2 years ago
12

A ball is thrown from an initial height of

Mathematics
1 answer:
Eduardwww [97]2 years ago
8 0

Answer:

Step-by-step explanation:

If we are looking for the times that the ball was 11 meters off the ground, we sub in 11 for the height on the left and solve for t:

11=-5t^2+30t+1 and

0=-5t^2+30t-10 and factor this however it is you are factoring in class to solve for t to get

t = .35 seconds and t = 5.6 seconds

Because the ball reaches this point in its way up and then passes it again on its way down, the ball will have 2 times at this height.

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During the final 5 seconds of a race a cyclist increased her velocity from 4 m/s to 7 m/s . What was her average acceleration du
GREYUIT [131]

Answer:

The average acceleration of the cyclist was 0.6 m/s².

Step-by-step explanation:

Acceleration:

The rate change of velocity per unit time is call the acceleration of the object.

a=\frac{v-u}t

u= initial velocity

v= final velocity

t= time taken change of velocity.

During the final 5 seconds of a race cyclist increased her velocity from 4m/s to 7 m/s

Here v= 7 m/s and u=4 m/s t=5 seconds

\therefore a=\frac{7\ m/s-4 \ m/s}{5s}

     =\frac{3}{5} \ m/s^2

     =0.6 m/s²

The average acceleration of the cyclist was 0.6 m/s².

8 0
3 years ago
Joel made some muffins. He gave 1/4 of of the muffins to a neighbor. He took 3/8 of the muffins to school. What fraction of the
dolphi86 [110]
Okay!   So 1/4 = 2/8  and 3/8 = 3/8      3/8+2/8= 5/8
3/8 is your answer


6 0
3 years ago
In order to have 290,000 in 10 yrs you should deposit how much each month​
never [62]

Answer:2416{APPROX}

Step-by-step explanation:

AMOUNT=290000

NO OF YEARS=10

NO OF MONTHS IN 10 YEARS=120 MONTHS.

SO AMOUNT TO DEPOSIT PER MONTH=290000/120=2416(APPROX)

7 0
3 years ago
pasha is thinking of a number such that when twice the number is added to three times one more than the number she gets the same
Lelechka [254]
<span>This is the equation made from the problem where x=mystery number
</span><span>2x+3(x+1)=4(x-1)</span><span>

</span><span>Now let's solve for x!
</span><span>
</span><span>We start by distributing 3 into (X+1)
</span><span>
</span><span>3(x)=3x  and 3(1)=3
</span><span>
</span><span>Now our equation is 2x+3x+3=4(x-1)
</span><span>
</span><span>Let's combine both x values on the left side of the equation: 2x + 3x=5x
</span><span>
</span><span>We now have 5x+3=4(x-1)
</span><span>
</span><span>Let's distribute 4 into (x-1)
</span><span>
</span><span>4(x)=4x  and 4(-1)=-4
</span><span>
</span><span>Now our equation is 5x+3=4x-4
</span><span>
</span><span>subtract 3 form both sides
</span><span>
</span><span>5x=4x-7
</span><span>
</span><span>subtract 4x from both sides
</span><span>
</span><span>x=-7
</span><span>
</span><span>Yay! So the number she is thinking of is -7!</span><span>








</span>
5 0
3 years ago
Read 2 more answers
Marcus has earned 353 out of 400 points in Math class. What grade did Marcus make in his math class? (Round grade to the nearest
Taya2010 [7]

Answer:

an 88.25

Step-by-step explanation:

well 88%

5 0
3 years ago
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