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aleksklad [387]
3 years ago
9

Evaluate each expression. 1) 3(6+7)

Mathematics
1 answer:
Ainat [17]3 years ago
5 0

Answer:

the answer is 39

Step-by-step explanation:

first add 6 and 7

3(13)

=39

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Will mark BRAINLIST for only correct answer
katovenus [111]

Answer:

Gym A

Step-by-step explanation:

A linear relationship is a relationship of the form y = mx + b, where y and x are the linear variables, m is the rate of change and b is the value of y when x = 0.

Gym A:

Let x represent the month and y represent the total cost for the gym. From the table, we can represent the values in the form (x, y) as (1,70), (2, 90) and (3, 110). We can find the relationship between x and y using the formula:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\Let \ us\ use\ the\ points\  (1,70)\ and\ (3,110),hence:\\\\y-70=\frac{110-70}{3-1}(x-1)\\\\y-70=20(x-1)\\\\y=20x-20+70 \\\\y=20x+50\\\\For\ 10\ months(i.e.\ x=10):\\\\y=20x+50\\\\y=20(10)+50\\\\y=\$250

Gym B:

We can represent the values from the table as (1,55), (2, 80) and (3, 105). We can find the relationship between x and y using the formula:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\Let \ us\ use\ the\ points\  (1,55)\ and\ (3,105),hence:\\\\y-55=\frac{105-55}{3-1}(x-1)\\\\y-55=25(x-1)\\\\y=25x-25+55 \\\\y=25x+30\\\\For\ 10\ months(i.e.\ x=10):\\\\y=25x+30\\\\y=25(10)+30\\\\y=\$28 0

Hence gym A would cost less ($250 < $280)

4 0
3 years ago
Can someone help me? A: How long did it take Diane to complete her route on Thursday if, on average, it took her 46 minutes?
love history [14]

Answer: B.) 43

I just did it on usatestprep and I got 43

Step-by-step explanation:

8 0
3 years ago
3825 grams equals how many pounds?
White raven [17]
There are 453.592 grams in 1 pound.

3825 / 453.592 = 8.43

3825 grams is about 8.43 pounds.
5 0
3 years ago
Read 2 more answers
What is the sum of an 8-term geometric series if the first term is −11, the last term is 859,375, and the common ratio is −5? −1
LekaFEV [45]

Answer:

The sum of geometric series is 716144

Step-by-step explanation:

Given

First term=a_1= -11

Last term=a_8=859375

Common ration of geometric series=r= -5

And

Total terms in geometric sequence=n=8

We know that the formula for sum of geometric series is:

S_n=  (a_1 (1-r^n))/(1-r)

=  (-11(1-(-5)^8)/(1-(-5))

=  (-11(1-5^8))/(1+5)

=  (-11(1-390625))/6

=(-11(-390624)))/6

=4296864/6

=716144

So the sum of geometric series is: 716144  ..

4 0
3 years ago
Solve for x.round ur anwser to the nearest tenth
NeX [460]

Answer:

440

Step-by-step explanation:

it has the nearest tenth value is 90 so 90-50=40 and 40*11=440

7 0
3 years ago
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