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atroni [7]
3 years ago
6

If beaver family one can cut down and 20" tree in 15 minutes and family two can cut down a tree 3 times the size in twice as lon

g how long will it take the second beaver family to cut down a 20" tree
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
5 0

Answer:

10 minutes

Step-by-step explanation:

Beaver family 2 can cut down 60'' (20 x 3) tree in 30 (15 x 2) minutes

In one minute, beaver family 2 would cut down 60/30 = 2'' tree

time to cut down 20'' tree = 20/2 = 10 minutes

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Square root of 7x times the square root of 7 root x
djyliett [7]
Square root x * square root x = square root of x^2 which is just absolute value of x which is just x.
Now you’re left with 7x square root 7

I hope this helps
8 0
3 years ago
PLSSSSS HELPPPPPPP ASAPPPPPP!!!! I WILLL GIVE BRAINLIEST!!!!
ELEN [110]

Answer:

sure

Step-by-step explanation:

4 0
3 years ago
A local high school has 1,203 students with 367 freshmen, 382 sophomores, 249 juniors, and 205 seniors. What is the relative fre
sweet-ann [11.9K]

The relative frequency of students who are not seniors at this high school will be 82.96%.

<h3>How to find how much percent 'a' is of 'b'?</h3>

Suppose a number is 'a'

Suppose another number is 'b'

We want to know how much percent of 'b' is 'a'.

Then, it is calculated as:

P = a/b × 100

A local high school has 1,203 students with 367 freshmen, 382 sophomores, 249 juniors, and 205 seniors.

Then the relative frequency of students who are not seniors at this high school will be

P = 998/1203 × 100

P = 0.82959 × 100

P = 82.959%

P ≈ 82.96%

Learn more about percent here:

brainly.com/question/11549320

#SPJ1

8 0
2 years ago
Explain how you could use a number line to determine -5 -(-3)<br><br> What is the difference?
siniylev [52]

Answer:

-2

Step-by-step explanation:

Start on -5 on the left side of the number line, jump from -5 three times to the right of the number line since ( - - ) means to add. As you jump draw "bridges" and by the time you have completed the amount of jumps you have to do you'll end up with a difference of -2.

8 0
3 years ago
The vertex of this parabola is at (-4, -1). When the y-value is 0, the x-value is 2. What is the coefficient of the squared term
Delicious77 [7]
Equation for parabola is
y = a ( x - h ) ^2 + k    where (h,k) is the vertex of the parabola. 

Given:  vertex (-4, -1)  h = -4; k = -1

y = a (x - (-4))^2 + (-1)
y = a ( x + 4)^2 - 1  plug in the values given for x and y.  y-value is 0 and x-value is 2

0 = a (2 + 4)^2 -1
0 = a (6)^2 -1   square 6
0 = a 36 - 1    add 1 to both sides to isolate the a
1 = 36 a         divide both sides by 36 to isolate the a
1/36 = a         the coefficient. 

i think you might have typed a number incorrectly if those are your answer choices.  Maybe the step by step process can still help you with your correct numbers.  :-) 
5 0
3 years ago
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