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2 years ago

Please help me in like 2 minutes due in 3 minutes

Mathematics

2 answers:

max2010maxim [7]2 years ago

7 0

The answer: 2+4x5=22

ale4655 [162]2 years ago

7 0

Answer:

5 dummy

Step-by-step explanation:

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Complete the pattern.

vovangra [49]

90,000 that’s the answer since it goes 90, 900, 9,000, ___, 900,000

4 0

2 years ago

Roberto spent 90 minutes doing homework,2/3 hour reading, and 540 seconds making lunch.How many more minutes did he spend doing

poizon [28]

Answer:

first of all convert the hours to minutes

2/3×60=40

convert the seconds to minutes

540÷60=9

add the minutes

40+9=40

so he spent

90-40=50 more minutes in doing his homework.

6 0

2 years ago

What is the solution for t3=30

Step2247 [10]

Answer:10

Step-by-step explanation:

3 0

2 years ago

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After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by th

lubasha [3.4K]

Answer:

The ball will take 4.05 seconds to hit the ground.

Step-by-step explanation:

we have

$h=-16t^{2}+64t+3$

This is a quadratic equation (vertical parabola) open down

The vertex is a maximum

we know that

The ball hit the ground when h=0

Solve the quadratic equation

For h=0

$-16t^{2}+64t+3=0$

The formula to solve a quadratic equation of the form

$at^{2} +bt+c=0$ is equal to

$t=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^{2}+64t+3=0$

$a=-16\\b=64\\c=3$

substitute in the formula

$t=\frac{-64(+/-)\sqrt{64^{2}-4(-16)(3)}} {2(-16)}$

$t=\frac{-64(+/-)\sqrt{4,288}} {-32}$

$t=\frac{64(-)\sqrt{4,288}} {32}=-0.05\ sec$ ---> the time cannot be a negative number

$t=\frac{64(+)\sqrt{4,288}} {32}=4.05\ sec$

therefore

The ball will take 4.05 seconds to hit the ground.

4 0

2 years ago

Solve for x: 7x + 15 = 38

Alexeev081 [22]

7x+15=38
7x=38-15
7x=23
x=23/7

4 0

2 years ago

Read 2 more answers