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3 years ago

What of following best describes the expression 9(x+7)

1 answer:

4 0

Hello there!

•this expression is a product between two factors because they are being MULTIPLIED to each other.
•this expression is has two factors, a constant and a 2-term factor. The constant is 9 and the two term factor is (x+7).

This means the answer is...
The product of a constant factor 9 and a 2-term factor x+7

I really hope this helps!
Best wishes :)

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A car is traveling on a small highway and is either going 55 miles per hour or 35 miles per hour, depending on the speed limits,

elena-s [515]

9514 1404 393

Answer:

2.05 hours

Step-by-step explanation:

Using the given equation with the given time, we have ...

55x +35(2.5) = 200

55x = 112.5 . . . . . . . . subtract 87.5

x = 2.05 . . . . . . . . . . divide by 55

The car spends 2.05 hours at 55 mph.

6 0

3 years ago

Find each value of the five-number summary for this set of data. [Note: Type your answers as numbers. Do not round.] 46, 19, 38,

frozen [14]

Answer:

Maximum : 51

Minimum: 12

Median: 38

Lower quartile: 19

Upper quartile: 46

Step-by-step explanation:

To answer this question, we first order the data from largest to smallest:

46, 19, 38, 27, 12, 38, 51

12, 19, 27, 38, 38, 46, 51

It can be seen that the maximum value is:

The minimum value is

Let's call N the amount of data.

To calculate the quartiles we use the following formula:

$Q_1 = X_{\frac{1}{4}(N + 1)}$

So:

$Q_1 = X_{\frac{1}{4}(7 + 1)}$

$Q_1 = X_2$

Where $X_2$ is the data number 2.

Q1 = 19

As the number of data is imapar, then, the median is the central data:

12, 19, 27, {38}, 38, 46, 51

Median = 38

Finally:

$Q_3 = X_ {\frac{3}{4}(n + 1)}\\\\Q_3 = X_ {6}$

Where $X_6$ represents the data number 6

$Q_3 = 46$

4 0

3 years ago

HELP WITH PROBABILITY PWEASEEE <br> (4 questions)

Aliun [14]

a. {1,2,3,4,5,6}

b. {A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z}

c. {HH,HT,TH,TT}

d. {1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H}

Step-by-step explanation:

We will write the sample space of all options one by one.

a. Rolling a 6 sided die

As the die has six sides numbered from 1 to six then the sample space will be:

S1 = {1,2,3,4,5,6}

b. Guessing the first initial of a student's name:

As the English language has 26 alphabets, the first initial can be any alphabet so the sample space will be all letters:

S2 = {A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z}

c. Tossing two coins

As two coins are tossed, the outcomes will be a combination of two outcomes

S3= {HH,HT,TH,TT}

d. Rolling a 6 sided die and tossing a coin

As the die is rolled and then a coin is tossed. The die's coin will either combine with heads or tails

So,

S4 = {1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H}

Hence,

a. {1,2,3,4,5,6}

b. {A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z}

c. {HH,HT,TH,TT}

d. {1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H}

Keywords: Sample Space, Probability

Learn more about sample space at:

brainly.com/question/11007026

brainly.com/question/11207748

#LearnwithBrainly

8 0

4 years ago

Just need help with #6

Anarel [89]

Answer:

Step-by-step explanation:

a) The rate of change is referred to as slope

Slope = change in value of y on the vertical axis / change in value of x on the horizontal axis

change in the value of y = y2 - y1

Change in value of x = x2 -x1

From the graph,

y2 = 160 = final value of y

y 1 = 260 = initial value of y

x2 = 10 = final value of x

x1 = 5 = initial value of x.

Slope = (160 - 260)/10 - 5)=-100/5

Slope = -20

b) initial height of the biker above the Canyon was 360 feets. It is reducing as the time is increasing.

c) it took the hiker 18 minutes to reach the Canyon floor.

d) After 9 minutes, the hiker was 180 feets above the Canyon floor

e) it took 7 minutes for the hiker to reach 220 feets above the Canyon floor.

f) The domain is the set of all possible values of the independent variable and the independent variable is time.

The time between which the hiker was at the maximum height and the minimum height lies between 18 minutes and 0 minutes.

The domain is 0 lesser than or equal to t lesser than or equal to 18.

The range is the set of all possible values of the dependent variable and the dependent variable is height of the hiker above the Canyon. The maximum height of the hiker was 360 feet and the minimum height of the hiker was 0 feet. Let the height be h.

The range is 0 lesser than or equal to h lesser than or equal to 360

3 0

4 years ago

The area of a floor to be carpeted is 2700 square feet what is this area in square yards?

Cerrena [4.2K]

C 1yd^2 = 9ft^2 _____yd^2 = 2700ft^2 2700 / 9 = 300 yd^2

5 0

3 years ago

Read 2 more answers