Ask question

Ask question

All categories

3 years ago

13

Solve for y: 7/9y = 42

2 answers:

Eva8 [605]3 years ago

8 0

7/9y=42

Take the denominator and multiply it by the whole. 9*42=378

Then take your answer and divide it by the numerator. 378/7=54

To check your work just simply multiply 7/9 * 54 = 42

iren2701 [21]3 years ago

4 0

I answered on paper hope that is alright with you. I just find it easier for math problems. That slash means two numbers cancel each other out. What's in the box is the answer and the proof that it's right is underneath.

You might be interested in

Mike is renting a boat. The rental fee is $25 for each hour. He rented a boat for 3 hours. Which is the dependent variable in th

egoroff_w [7]

225 i think not sure

7 0

3 years ago

10-4=6 what is the correct term for the number4

KIM [24]

Answer:

Subtrahend

Step-by-step explanation:

This subtraction problem is in the following form:

Minuend - Subtrahend = Difference

The Subtrahend is the number that is to be subtracted from the Minuend.

In this problem the 10 is the minuend, the 4 is the subtrahend, and 6 is the difference.

~Hope this Helps!~

6 0

3 years ago

A rectangular prism has a length of 13 meters, a height of 8 meters, and a width of 9 meters. What is its volume, in cubic meter

Angelina_Jolie [31]

Answer:

V =936 m^3

Step-by-step explanation:

The volume of a cube is given by

V = l*w*h

V = 13*8*9

V =936 m^3

4 0

3 years ago

Read 2 more answers

Historically, these bolts have an average thickness of 10.1 mm. A recent random sample of 10 bolts yielded these thicknesses:

Akimi4 [234]

Answer:

a) Sample mean = 9.99

Sample standard deviation = 0.3348

b) -1.0389

c) 0.1631

Step-by-step explanation:

We are given the following in the question:

9.7, 9.9, 10.3, 10.1, 10.5, 9.4, 9.9, 10.1, 9.7, 10.3

a) sample mean and standard deviation

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{99.9}{10} = 9.99$

Sum of squares of differences = 1.009

$S.D = \sqrt{\dfrac{1.009}{9}} = 0.3348$

b) observed value of the t-statistic

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{9.99 - 10.1}{\frac{0.3348}{\sqrt{10}} } = -1.0389$

c) probability of these statistics (or worse) if the true mean were 10.1 mm

Degree of freedom = n - 1 = 9

Calculating the value from the table

$P(x < 9.99) = 0.1631$

0.1631 is the the probability of these statistics (or worse) if the true mean were 10.1 mm

8 0

3 years ago

Helppppppppppoppppp??

valentina_108 [34]

Answer:

1st option because those angles are a linear pair.

3 0

3 years ago