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agasfer [191]
3 years ago
6

peggy practices her gymnastics routine for a total of 21 hours . each practice session is 1 3/4 hours . how many practice sessio

ns does Peggy have.
Mathematics
2 answers:
algol [13]3 years ago
8 0
Peggy has 12 practice sessions

The first step is finding the unit rate. We can do this by evaluating

21/1.75 divided by 1.75/1.75.
When you divide the two, you get 12.

To check your work you do 12(1.75) and you will get 21
Zinaida [17]3 years ago
4 0

Answer:

12

Step-by-step explanation:

To find the answer, you divide 21 by 1 3/4.

21→21/1

1 3/4→7/4

You then find the reciprocal of the divisor.

7/4→4/7

Multiply.

21/1 ×4/7=84/7→12

The answer is 12.

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What is an angle between a side of a polygon and the extension of its adjacent side
jek_recluse [69]
I would say that the angle would be an exterior angle because it's usually between the side of the polygon connected by a line as an extension of the adjacent side. 

here's an example. hope it helps!

8 0
3 years ago
Use the slope formula to determine the slope of the line that passes through the points R (1, 2) and S (5, 7)
Citrus2011 [14]
M = (y2-y1)/(x2 -x1)
m = (7 -2)/(5 - 1)
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4 0
2 years ago
If one of the zeros of the cubic polynomial x3 + ax2 + bx + c is -1, then what will be the product of the other two zeros?
zhenek [66]

Answer:

The product of the other two zeros is c

Step-by-step explanation:

Let α, β and γ be the zeros of the polynomial x³ + ax² + bx + c. Since one of the zeros is -1, therefore let γ = -1. Hence:

sum of the roots = α + β + γ = -a

-1 + β + γ = -a

β + γ = -a + 1

αβ + αγ + βγ = b

-1(β) + (-1)γ + βγ = b

-β -γ + βγ = b

Also, the product of the zeros is equal to -c, hence:

αβγ = -c

-1(βγ) = -c

βγ = c

Hence the product of the other two zeros is c

6 0
3 years ago
Equations practice with angles Geometry. Can anyone help me please, im stuck....​
Bas_tet [7]

Same as the last one ! Review your parallel lines, and you'll see that angles A and B have to be equal. So you solve it EXACTLY the same way as the last one.

You say "A equals B", and that means that

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Solve that to find x (it's 20),

and then use x to find angle B (it's 150; they both are).

(Don't just take my word for it. Please work it through.)

3 0
2 years ago
Brandon owes his brother $100. He will repay his brother $5 each week. Which expression gives the amount in dollars Brandon will
trasher [3.6K]
It’s b because n equals weeks so after the first week he has given back five dollars because 5 time 1 is 5.
8 0
3 years ago
Read 2 more answers
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