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3 years ago

Who swims faster Sarah or Eva? WILL NAME BRAINIEST

Mathematics

2 answers:

zalisa [80]3 years ago

7 0

Answer:

Sarah swims faster

Step-by-step explanation:

To get the answer, divide the time by the distance. 17/425 is greater than 20/520, so sarah swims faster

Greeley [361]3 years ago

4 0

Answer:

Eva swims faster than Sarah

Step-by-step explanation:

At first, they swim at different rates, but if you compare the last two (17/425 and 20/520) Eva swam the fastest.

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Which of the following is the solution set of x2 + 8x + 12 = 0? (-2.-6 2.6

algol [13]

To solve this polynomial equation, we first factor the left side.

To factor x² + 8x + 12 = 0, look for factors of 12 that add to 8.

These factors are 6 and 2 so we have (x + 6)(x + 2) = 0.

So either x + 6 = 0 or x + 2 = 0 and solving for

x in each equation, our answer is {-6, -2}.

6 0

3 years ago

In the library at Lenape Elementary School, there are

Phoenix [80]

Solution:

we are given that

In the library at Lenape Elementary School, there are 3/8 as many fiction books as there are nonfiction books.

There are 44 books in the school library.

we have been asked to find How many books are fiction books?

Let there are x non fiction books in the library. Then there will be $\frac{3}{8}x$ fiction books.

Hence we can write

$x+\frac{3}{8}x=44\\\\\text{Now solve for x}\\\\\frac{8x+3x}{8}=44\\\\\frac{11x}{8}=44\\\\11x=44*8\\\\x=\frac{44*8}{11}\\\\x=4*8=32\\$

Hence there are 32 non-fiction books in the library.

and 44-32=12 fiction books in the library.

6 0

3 years ago

The perimeter of a rectangle is 256 units. The longer sides are each 12 units more than the shorter sides. What is the length of

antoniya [11.8K]

Answer:

58 58 60 60 are the lengths of the sides

Step-by-step explanation:

7 0

3 years ago

Why can I not post a question that it at a certain number of letters?

juin [17]

Answer:

I really dont know

Step-by-step explanation:

Maybe the server thinks ur doing sum bad but i dont know

4 0

3 years ago

Read 2 more answers

Answers with explanations

Snezhnost [94]

To answer this question, try to solve the system of equations. Start by plugging in " $x^{2} +3x-7$ " in for y in the second equation:

$x^{2} +3x-7-5x+8=0$

*Combine like terms*

$x^{2} -2x+1=0$

*Factor*

$(x-1)(x-1)=0$

*Set each term equal to 0*

x-1=0

*Add 1 to both sides*

x=1

C) There is exactly 1 solution.

Hope this helps!!

7 0

3 years ago