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3 years ago

12

Coach Barnette recorded 200 meter running times of runners to the nearest hundredth of a second. He rounded Waneta’s time to 19.

30 seconds. Which of the following could have been Waneta’s actual time?
who ever awnser i will mark brainist

1 answer:

serg [7]3 years ago

4 0

Answer:

$200^{2}$ meter

or 19.3

ithink

Step-by-step explanation:

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A boat travels at a rate of 18 kilometers per hour from its port. A second boat is 34 kilometers behind the

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Answer:

The second boat will catch up in 8.5 hours, and they will be 187 km from their port.

Step-by-step explanation:

Since the system of equations are d=18t+34 and d=22t, you first rewrite d=18t+34 as an equation. 18t+34=22 and that equals to 8.5=t. Then you solve the next one d=22t and the answer you got from the other equation, you substitute d=22(8.5) and that equals to 187.

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3 years ago

Submit Assessment

Sliva [168]

the length of the rectangle is 10ft

Step-by-step explanation:

let the length = x

width = x - 4

area = length X width

so, according to the problem

x(x-4) = 60

or, $x^{2}$ - 4x = 60

or, $x^{2}$ -4x -60 = 0

or, $x^{2}$ - 10x + 6x -60 = 0

or, x(x-10) +6(x-10) =0

or, (x-10)(x+6) = 0

x = 10 ( x= -6 for length this value is not possible)

so length is 10ft

width = 10 - 4 = 6ft

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3 years ago

For the polynomial function ƒ(x) = x4 −25x2, find the zeros. Then determine the multiplicity at each zero and state whether the

Veronika [31]

<u>ANSWER</u>

The zeros are $x=-5,x=0,x=5$

EXPLANATION

Given;

$f(x)=x^4-25x^2$ .

We can rewrite the function as

$f(x)=x^2(x^2-25)$

$\Rightarrow f(x)=x^2(x^2-5^2)$

$\Rightarrow f(x)=x^2(x-5)(x+5)$

The zeros are found by equating the function to zero.

$\Rightarrow x^2(x-5)(x+5)=0$

$\Rightarrow (x-5)=0$

The multiplicity is 1, since it is odd the graph crosses at this intercept. which is $x=5$

Or

$\Rightarrow (x+5)=0$

The multiplicity is 1, since it is odd the graph crosses at this intercept. which is $x=-5$

Or

$\Rightarrow x^2=0$

This last root has a multiplicity of 2.

That is

$x=0$ repeats two times.

Since the multiplicity is even, the graph touches the x-axis at the point $x=0$ .

See graph.

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3 years ago