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3 years ago

The length of a rectangle is twice its width. The perimeter is 60ft. find the area

Mathematics

2 answers:

vazorg [7]3 years ago

7 0

The answer to your question is 200 square ft

Aleksandr-060686 [28]3 years ago

3 0

Ok slightly confused but i wanna say something like 90 idk

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Find the distance between (-1,4) and (1,-1)

Alex Ar [27]

Answer:

$d=\sqrt{29}$

Step-by-step explanation:

The trick here is knowing the distance formula:

$d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

using that equation with (-1,4) and (1,-1), we get:

$d=\sqrt{(1-(-1))^2+((-1)-4)^2}\\d=\sqrt{(1+1)^2+(-1-4)^2}\\d=\sqrt{(2)^2+(-5)^2}\\d=\sqrt{4+25}\\d=\sqrt{29}\\$

5 0

4 years ago

What is 3x55 divided by 8 +9 minus 15=67x8???

IRISSAK [1]

Answer:

5.3 = 536

Step-by-step explanation:

if i'm wrong please lmk!

8 0

2 years ago

Mrs. Flores asked her students to write a number, its opposite, and its absolute value, in that order. Four of her students turn

oee [108]

Answer:

Sarah is correct

Step-by-step explanation:

Required

Which of the students is correct

Let a number be x,

Given what the teacher asked the students to do, the solution is:

$Number = x$

$Opposite = -x$

$Absolute = |x|$

Only Sarah got this correctly; others are incorrect.

The proof is as follows.

For Sarah

$Number = 1416$

$Opposite = -1416$

$Absolute =|1416| = 1416$

So, the numbers will be: 1416, -1416 and 1416

<em>Other students are incorrect</em>

4 0

3 years ago

If f(x) = 3x^2+ 3x^(1/2) + 3x, then f(-9) is equal to

ivanzaharov [21]

Since

$f(x)=3x^2+3\sqrt{x}+3x$

the domain of f(x) is the set of non-negative integers, because we can't feed a square root with negative inputs. So, you couldn't comput f(-9)

Unless you're allowed to use complex numbers, in that case we have

$f(-9)=3\cdot (-9)^2+3\sqrt{-9}+3\cdot (-9)=3\cdot 81+3\cdot (9i)-27$

Which evaluates to

$243+27i-27=216+9i$

5 0

3 years ago

A rare first-edition book is currently priced at $200. After one year, the price of the book is anticipated to be 1.15 times the

Yakvenalex [24]

Answer:

Graph Y is the correct answer

Step-by-step explanation:

after 1 year, the price would be $200 * 1.15 = $230

After 2 years, the price would be $230 * 1.25 = $264.5

As you can see, the graph X and Z do not start at $200 in the first year so it will be eliminated

The graph W show that after 2 years the price is $300 but the second year must have the price of $264.5 so the only option left is graph Y.

Hope this can help!

4 0

3 years ago