Jeremy sprinted for 123 seconds and rested. Then he sprinted for 157 seconds, rested, and sprinted again for 195 seconds. Estimate the combined time he sprinted by rounding to the nearest ten and then adding the rounded numbers.

Answers

Answer 1

Answer: 480 aproxmately if you round the numbers then add them up

Related Questions

In a recent survey it was found that Americans drink an average of 23.2 gallons of bottled water in a year. If the standard deviation is 2.7 gallons and the variable is normally distributed, find the probability that a randomly selected American drinks more than 25 gallons of bottled water in a year. What is the probability that the selected person drinks between 22 and 30 gallons
X +45) 44please help!
The hypotenuse of a 45°-45°-90° triangle measures 128 cm. A right triangle is shown. The length of the hypotenuse is 128 centimeters and the lengths of the other 2 sides are congruent. What is the length of one leg of the triangle?
It was reported that 23% of U.S. adult cellphone owners called a friend for advice about a purchase while in a store. If a sample of 15 U.S adult cellphone owners is selected, what is the probability that 7 called a friend for advice about a purchase while in a store
The center of the circle is located (3'8), and the circle has a radius that is 5 units long. What is the general form of the equation for the circle

Short-term classes: Does taking a class in a short-term format (8 weeks instead of 16 weeks) increase a student’s likelihood of passing the course? For a particular course, the pass rate for the 16-week format is 59%. A team of faculty examine student data from 40 randomly selected accelerated classes and determine that the pass rate is 78%. Which of the following are the appropriate null and alternative hypotheses for this research question?a.H0: p = 0.59; Ha: p ≠ 0.59
b.H0: p = 0.59; Ha: p > 0.59
c.H0: p = 0.78; Ha: p ≠ 0.78
d.H0: p = 0.78; Ha: p > 0.59

Answers

Answer:

Option b

Step-by-step explanation:

Given that For a particular course, the pass rate for the 16-week format is 59%. A team of faculty examine student data from 40 randomly selected accelerated classes and determine that the pass rate is 78%.

we have to find whether taking a class in a short-term format (8 weeks instead of 16 weeks) increase a student’s likelihood of passing the course

Since pass rate for 16 weeks is 59% we check whether for 8 weeks is more than this.

So correct null and alternative hypotheses for this research question

would be:

b.H0: p = 0.59; Ha: p > 0.59

Option b is right.

angle U and angle W are vertical angles. If measurement angle u = 6x+11 and measurement angle W = 10x-9, find measurement angle U.

Answers

The measure of angle U will be equal to the measure of angle W.

Because W is pronounced "double u", W = 2 * U.

Therefore U = W and U = 2 * W, so both U and W = 0.

Just kidding.

The correct answer is the smallest prime number greater than 40.

4. Which expression represents a number greater than 8,000 but smaller than 80,000

Answers

Answer:

8000<x<80000

Step-by-step explanation:

a number(x) is greater than (<) 8000

and x is also less than(<) 80000

The image shows a geometric representation of the function f(x) = x2 + 2x + 3 written in standard form. An algebra tile configuration. Only the Product spot is shown. 6 tiles are in the Product spot in 4 columns with 2 rows. First row: 1 + x squared, 1 + x. Second row: 1 + x, 3 +. What is this function written in vertex form? f(x) = (x + 2)2 + 3 f(x) = (x2 + 2x)2 + 3 f(x) = (x + 1)2 + 2 f(x) = (x + 3)2 + 2x

Answers

The function written in vertex form; f(x) = (x + 3)^2 + 2x. Hence, correct option is D.

What is a quadratic equation?

A quadratic equation is the second-order degree algebraic expression in a variable.

The standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

x² + 2x + 3 = 0 is a quadratic equation.

An algebra tile configuration showing Only the Product spot is shown. 6 tiles are in the Product spot in 4 columns with 2 rows.

First row: 1 + x squared, 1 + x.

Second row: 1 + x, 3 +.

Then,

The factors of the polynomial are;

(2x + 3) (x + 1)

Thus, the function written in vertex form;

f(x) = (x + 3)^2 + 2x

Hence, correct option is D.

More about the quadratic equation link is given below;

brainly.com/question/2263981

#SPJ5

Answer:

The factors of the polynomial are (2x + 3) (x + 1)

Step-by-step explanation:

Twice the square of a number

Answers

Answer:

2 * x^2

Step-by-step explanation:

in word form: two times the square of x

"a number" can be any variable; i used x

Answer:

x² × 2

Step-by-step explanation:

Notice vocabulary:

twice → multiplication by a factor of two → ×2
a number → unknown number; variable → x
the square → raised to the power of two → x²

Put this information together.

"Twice the square of a number"

Since it says of a number, this number comes first → $x$

"Twice the square of a number"

The square of a number means that the variable will be squared → $x^2$

"Twice the square of a number"

Multiply the variable by a factor of two → $x^2*2$

:Done

Of the 250 sheep in a flock,
34% are spotted what is the total of spotted sheep

Answers

the answer is 85 sheep are spotted

34% = 0.34

0.34 * 250 = 85

34% of 250 would be 85

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