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stepladder [879]
4 years ago
13

What expression represents 7 times the sum of a number and 8?

Mathematics
2 answers:
PolarNik [594]4 years ago
3 0

7(n + 8 You use the parentheses to know that that the adding comes first because usually in PEMDAS multiplication comes first.

Dmitry_Shevchenko [17]4 years ago
3 0

Answer:

y=7(8+x)

Step-by-step explanation:

not much to explain sry.

pls give thx and brainliest wannna level up

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zmey [24]
81 - 35+30 (55) = 26 therefore 26cm is ur final answer
7 0
3 years ago
Read 2 more answers
A basketball team wants to see if its fans like its new uniforms. Which description represents a population?
nadezda [96]

Answer:

xd

Step-by-step explanation:

xd

se pone primero la x y despues la d, se dice gracias crick

3 0
3 years ago
A taxi charges a pick-up fee p!us a charge per mile. Maria paid $15.00 for a 7 mile rode. To my paid $19.50 for a 10 mile ride.
lukranit [14]

Answer:

The y-intercept in coordinate form is (0, 4.5) and represents the taxi pick-up fee.  The equation is y=1.5x + 4.5.

Step-by-step explanation:

This question is asking for the slope and y-intercept of a linear equation.  A linear equation makes a straight line based on a constant rate of change.  For this problem, the cost per mile is the slope, while the independent variable 'x' is the number of miles and the dependent variable 'y' is the total cost.  In order to first find slope, you need to use the two points given (7, 15) and (10, 19.5) to set up a change in y / change in x, or (19.5-15)/(10-7) or 4.5/3 which is 1.5.  So the slope, or cost per mile is $1.50.  To find the y-intercept (b), or the cost of the pick-up fee, simply fill in your equation y=1.5x + b with your other variables and solve for 'b'.  So, 15 = (1.5 x7) + b.  or 15 = 10.5 +b, subtract 10.5 from both sides of the equation to get b=4.5.  

5 0
4 years ago
Let x be normal distribution with mean 70 and standard deviation 2. given the following probability, p (x < a) = 0.9147, find
lapo4ka [179]

The value of a is 72.74.

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It is given that

The mean \rm \mu of the distribution is 70

Standard deviation \rm \sigma  is 2

p( x<a) = 0.9147

a = ?

From Z table

For p ( p < 0.9147) , z = 1.37

\rm Z = \dfrac { X - \mu}{ \sigma}

\rm \rm 1.37 = \dfrac { a - 70}{ 2}

a = 70+ 2*1.37

a = 72.74

Therefore the value of a is 72.74.

To know more about Probability

brainly.com/question/11234923

#SPJ1

6 0
2 years ago
Each batch of cookies that mrs. claus makes takes 20 minutes in the oven. If the oven is on for 3 hours ,how many batches of coo
liraira [26]
You would do 3x60=180 since there is 60 minutes in each hour then dives 180 and 20 which gives you 9 batches of cookies. Hope this helps!
4 0
3 years ago
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