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3 years ago

11

What's the x-intercept for number 26?

1 answer:

Lunna [17]3 years ago

6 0

It gives function: h = -16t^2 + 40
water is when height is 0 so solve for 0= -16t^2 + 40
subtract 40 from both sides: -40 = -16t^2
divide by -16: -40/-16 = t^2
simplify: 5/2 = t^2
square root both sides: 1.58 = t

the orange hits the river in 1.58 seconds.

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The question is an illustration of solving equations using estimates.

The student's strategy makes sense because he uses estimation to solve the given equation

The correct sequence of equation is as follows:

$\mathbf{159 - 73}$

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We have:

$\mathbf{159 - 73}$

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$\mathbf{159 - 73 =159 + 0- 73}$

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Add another 0

$\mathbf{159 - 73 =160 - 1- 73 + 0}$

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Rewrite as:

$\mathbf{159 - 73 =160 - 70- 1 - 3}$

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brainly.com/question/18454732

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