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4 years ago

10

Teresa wrote this expression to describe the total distance she was going to swim during two swim classes.

1 answer:

frez [133]4 years ago

5 0

I think the answer is the second one, Tessa wasn't sure how far she would swim during the first class. She would swim 3 laps during the second class. The question is confusing, because the equation s+3 is supposed to be the DISTANCE she swam in 2 classes. The problem didn't specify that distance equals laps, but I think the answer is correct

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14 points and I will mark you brainiest if<br> you tell me how to do it

sveta [45]

Answer:

10/63 because 5x2 is 10 and 9x7 is 63

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3 years ago

Read 2 more answers

The slopes of perpendicular lines are ________ reciprocals.

Mariulka [41]

The gradient/slopes of perpendicular lines are NEGATIVE reciprocal. This means that their product is -1.

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3 years ago

Find the number of sides for a regular polygon whose interior angles each measure 10 times each exterior angle

gavmur [86]

Answer:

22 sides

Step-by-step explanation:

The expression to find an interior angle of a polygon is:

$\frac{(n-2)*180}{n}$

The expression to find an exterior angle of a polygon is:

$\frac{360}{n}$

Please note that "n" represents the number of sides the polygon has.

We can use these two expressions to set up an equation.

$\frac{(n-2)*180}{n}=10(\frac{360}{n})$

Multiply both sides by "n":

$(n-2)*180=10n(\frac{360}{n})$

Now, distribute:

$180(n)-180(2)=\frac{3600n}{n}\\180n-360=3600$

Divide both sides by 10:

$\frac{180n}{10}-\frac{360}{10}=\frac{3600}{10}\\$

$18n-36=360$

Add 36 to both sides:

$18n=360+36\\18n=396$

Divide both sides by 18:

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The polygon has 22 sides

6 0

3 years ago

2r-3.1=1.7 solve each equation check your soultion plz help step by step plz

professor190 [17]

2r-3.1=1.7 add 3.1

2r=1.7+3.1 divide by 2 to isolate r

2r/2=4.8/2

r=2.4

check

2(2.4)-3.1=1.7

4.8-3.1=1.7

1.7=1.7

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4t/4=9/4

t=9/4

check

4(9/4)+3.5=12.5

9+3.5=12.5

12.5=12.5

8m-5.5=10.1 add 5.5

8m=10.1+5.5 divide by 8

8m/8=15.6/8

m=1.95

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8(1.95)-5.5=10.1

15.6-5.5=10.1

10.1=10.1

8 0

4 years ago

The band in a local school was selling bumper stickers to raise money. The net amount A in dollars raised by selling b bumper st

iris [78.8K]

Answer:

D. 740

Step-by-step explanation:

Put the given value of b into the formula and do the arithmetic:

A(150) = 5×150 -10 = 750 -10

A(150) = 740

The band raised $740 from their sales.

7 0

3 years ago