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2 years ago

Can someone help me with this and show work pleaseee!!!

Mathematics

1 answer:

murzikaleks [220]2 years ago

6 0

Answer:

10 units and 157.84 units

Step-by-step explanation:

substitute t = 1 into the equation

h = - 16(1)² + 6 = - 16 + 6 = - 10

the value is negative since the ball travels down

the ball has travelled 10 units after 1 second

substitute t = 3.2 into the equation

h = - 16(3.2)² + 6 = - 16(10.24) + 6 = - 163.84 + 6 = - 157.84

the well is 157.84 units deep

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Collins Middle School has 240 sixth grade students. If the sixth grade is 30% of the total school, how many students are in the

Masteriza [31]

Answer:

800

Step-by-step explanation:

We can set up a proportion using the information we are given. We know that 240 students corresponds to 30% and that the total number of students, x, corresponds to 100%

$\frac{240}{x} = \frac{30}{100}$

Cross multiply and solve:

240 * 100 = 30x

24000 = 30x

800 = x

6 0

3 years ago

Kelsey can buy 2 pounds of apples for 7$. Write an equation to represent the cost, c, for a, pounds of apples.

zmey [24]

$\huge\boxed{c=3.5a}$

First, we need to find how much a single pound of apples costs.

Do this by dividing.

$\frac{\$7}{2\ \text{lbs.}}\div\frac{2}{2}=\frac{\$(7\div 2)}{(2\div 2)\ \text{lbs.}} = \frac{\boxed{\$3.50}}{1\ \text{lb.}}$

Now, write an equation.

$\large\boxed{c=3.5a}$

This represents that the cost equals 3.5 times the number of apples.

8 0

3 years ago

Read 2 more answers

Find the x-intercepts (solve for x) for the following AND PLEASE SHOW YOUR WORK!

alekssr [168]

Answer:

hope it may help but I wasnt able to find y cause no question

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3 years ago

Twelve different video games showing drugs were observed. The duration times of drugs were recorded, with the times (seconds)

Studentka2010 [4]

The answers to the questions are:

1. The confidence level is 99 percent.

2. We have to conclude that there is no sufficient evidence available to support this claim because the Confidence interval contains 75 sec.

<h3>How to solve for the confidence level</h3>

1. The confidence level here should be

1- 0.01 = 0.99

= 99 percent

Given that, 99% confidence interval for population mean (μ) is (-34.1 sec u< u < 264.1 ) seconds.

We are to test the claim that the population mean is greater than 75 sec.

The given confidence interval contains the value of 75 sec, so there is not sufficient evidence to support the claim that the mean is greater than 75 sec.