Please help and thank you! (x4)

Answers

Answer 1

Answer:

in rectangular form the equation is

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Which phrase best defines a square? A.
a quadrilateral with exactly one pair of parallel sides

B.
a quadrilateral with no congruent sides

C.
a rectangle with four congruent sides

D.
a parallelogram with four congruent angles
I think its D?

Answers

the answer is D a parallelogram with four congruent angles

find the balance in the account after the given period $500 principal earning 4% compound quarterly after 6 years

Answers

A=P(1+r/100)^n
A=500(1+4/400)^24
A=500(1.01)^24
A=634.87

Answers

1. b

2. d

3. b

4. b

5. a

6. c

7. b

8. b

9. b

10. d

11. b

12. c

The perimeter of a rectangle is twice the sum of its length and its width. The perimete is 28 meters and its length is 2 meters more than twice its width. What is its length?

Answers

Let l be length and w be width.
So the problem already gave you what a perimeter is, which is 2l + 2w.
Now it says perimeter is 28, so 2l + 2w = 28.
Then it says length is 2 more than twice its width, so l = 2w + 2.
Now substitute.
2(2w + 2) + 2w = 28
4w + 4 + 2w = 28
6w = 24
w = 4

Now substitute w back in l = 2w + 2
l = 2(4) + 2
l = 10

in a given training week a swimmer completes 1/4 mile on day one 2/5 mile on day two

and 3/7 mile on day three,,

how many total miles does the athlete swim in the given week

Answers

We'll have to add up all the fractions.
First, find the LCM of the denominators.
To do this, we'll use the listing method.

4: 4, 8, 12, 16, 20, 24, 28, 32, 36, all the way to 140.
5: 5, 10, 15, 20, 25, 30, 35, all the way to 140.
7: 7, 14, 21, 28, 35, 42, 49, all the way to 140.

So, 140 is the Least Common Multiple.

Multiply the numerator of 1 as many times you multiplied 4 to get to 140, which is 35.
1 x 35 = 35.

Multiply the numerator of 2 as many times you multiplied 5 to get to 140, which is 28.
2 x 28 = 56

Multiply the numerator of 3 as many times you multiplied 7 to get to 140, which is 20.
3 x 20 = 60.

So: 35/140 + 56/140 + 60/140
=35/140 + 116/140
=151/140
=1 11/140

So, the swimmer swam 1 and 11/140th of a mile.

Step-by-step explanation:

We’ll have to add up all the fractions.

First, find the LCM of the denominators.

To do this, we’ll use the listing method.

4: 4, 8, 12, 16, 20, 24, 28, 32, 36, all the way to 140.

5: 5, 10, 15, 20, 25, 30, 35, all the way to 140.

7: 7, 14, 21, 28, 35, 42, 49, all the way to 140.

So, 140 is the Least Common Multiple.

Multiply the numerator of 1 as many times you multiplied 4 to get to 140, which is 35.

1 x 35 = 35.

Multiply the numerator of 2 as many times you multiplied 5 to get to 140, which is 28.

2 x 28 = 56

Multiply the numerator of 3 as many times you multiplied 7 to get to 140, which is 20.

3 x 20 = 60.

So: 35/140 + 56/140 + 60/140

=35/140 + 116/140

=151/140

=1 11/140

So, the swimmer swam 1 and 11/140th of a mile.

What can multiply to give you 80 but add up to give you 11

Answers

There are no real numbers that can do that job.

There's a pair of complex numbers that can do it.
They are

   5.5 + i4.97
and
   5.5 - i4.97 .

   ' i ' = the imaginary unit = √(-1)

5^2= (-5)^2
true or false

Answers

It’s True because of 5 square is equal to 25
Than (-5) square is also get the same value as 5^2

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