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3 years ago

HELP ME SOLVE THIS DUE TOMORROW!!

Mathematics

1 answer:

Sedaia [141]3 years ago

8 0

Answer mine and I will answer yours

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Let x be 3 4 + x + x + x = ?

IRINA_888 [86]

Answer:

Step-by-step explanation:

We replace each X with a 3, so

4 + 3 + 3 + 3

which equals to 13

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3 years ago

The table shows the number of hours spent practicing singing each week in three samples of 10 randomly selected chorus members.

astraxan [27]

Answer:

B they are close together

Step-by-step explanation:

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2 years ago

If ƒ(x) = 2x, then ƒ -1(x) = -2x ½x x - 2

kap26 [50]

Answer: second option

Step-by-step explanation:

To find the inverse function of the given function f(x):

$f(x)=2x$

You need to:

Substitute $f(x)=y$ into the function:

$y=2x$

Now, you need to solve for "x", to do this, you must divide both sides of the function by 2:

$\frac{y}{2}=\frac{2x}{2}\\\\\frac{y}{2}=x$

Now, replace "x" with "y" and replace "y" with "x":

$\frac{x}{2}=y$

Therefore, substituting $y=f^{-1}(x)$ you get:

$f^{-1}(x)=\frac{x}{2}$ or $f^{-1}(x)=\frac{1}{2}x$

7 0

3 years ago

Nevaeh invested $1,200 in an account paying an interest rate of 2⅞ % compounded quarterly. Paisley invested $1,200 in an account

viva [34]

Answer:

$Nevaeh \ will \ have \ 1224.33 \ and \ Paisley \ will \ have \ 1275.$

5 0

3 years ago

Read 2 more answers

Tim installs 50 square feet on his floor in 45 minutes. At this rate, how long does it take him to install 495 square feet?

Katena32 [7]

Answer:

445.5 minutes

or 7 hours 25 minutes 30 seconds

Step-by-step explanation:

We can use ratio's to solve

50 ft^2 495 ft^2

-------------- = ------------

45 minutes x minutes

Using cross products

50x = 45*495

50x=22275

Divide each side by 50

50x/50 = 22275/50

x =445.5

445.5 minutes

If we want to convert to hours and minutes, divide by 60

7 hours is 420 minutes

445.5 -420 = 25.5

7 hours 25 minutes

.5 minutes is 30 seconds

7 hours 25 minutes 30 seconds

6 0

3 years ago