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3 years ago

Please Help, Thank You!

Mathematics

2 answers:

irina [24]3 years ago

7 0

Answer:

e=9

sorry thats all i know:(

Step-by-step explanation:

tresset_1 [31]3 years ago

4 0

Answer: b.) 3x^2+9 factorized= 3(x^2 +3)

c) solving inequality: subtract 3 on both sides, take that answer and divide by 2 on both sides. answer is x>7

Step-by-step explanation:

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In an endurance race, Rachel ran

Reil [10]

Answer:

$31\frac{1}{5}\ miles$

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

The distance is equal to multiply the speed by the time

we have

$speed=9\frac{3}{5}\ \frac{miles}{hour}$

$time=3\frac{1}{4}\ hours$

$distance=(9\frac{3}{5})(3\frac{1}{4})$

Convert mixed number to an improper fraction

$9\frac{3}{5}=9+\frac{3}{5}=\frac{9*5+3}{5}=\frac{48}{5}$

$3\frac{1}{4}=3+\frac{1}{4}=\frac{3*4+1}{4}=\frac{13}{4}$

substitute

$distance=(\frac{48}{5})(\frac{13}{4})=\frac{624}{20}=31,2\ miles$

Convert to mixed number

$31.2\ mi=31+0.2=31+\frac{1}{5}=31\frac{1}{5}\ miles$

3 0

3 years ago

Simplify the expression. 5/8*(18*3+(-22))+(-45)

lubasha [3.4K]

Using PEMDAS
(Parenthesis)(Exponents)(Multiplication/Division)(Addition/Subtration)
So:
$\frac{5}{8} * ((54-22)-45) = \frac{5}{8}*(32-45) = \frac{5}{8}(-13)$
$= \frac{-65}{8}$ $= -8.125$

3 0

3 years ago

Ashley has 500 songs in his music player. Every week he adds 10 songs to his collection. How many songs will he have in his musi

Ad libitum [116K]

700 because 10 times 20 is 200 and 500 plus 200 is 700.

5 0

4 years ago

Read 2 more answers

Combine the like terms to create an equivalent expression what is 2 x - x + 8

Novay_Z [31]

Answer:

x + 8

Step-by-step explanation:

when theres just an x or any number there it is the same as 1x

2x - 1x = 1x / x

1x + 8 aka x + 8

7 0

3 years ago

Solve the following system: y=1 y=-6x-5

Mandarinka [93]

Answer:

x = -1

y = 1

Step-by-step explanation:

Since it gives you "y", plug in the number given into the equation:

y = -6x - 5

1 = -6x - 5

Then, add 5 to both sides:

1 = -6x - 5

+5 + 5

________

6 = -6x

Divide both sides by -6:

6 = -6x

-1 = x

So now you have, x = -1 and y = 1

4 0

4 years ago

Read 2 more answers