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marissa [1.9K]
3 years ago
9

What is the answer to -9 x (-9) x (-9)

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
8 0

\text {Hey! Let's Solve this Problem!}

\text {We Know That: Multiply a Negative to a Negative will Equal a Positive.}

\text {We Also Know: Multiply a Positive to a Negative will Equal a Negative.}

\text {Multiply:}

\text {-9*-9=81}

\text {Multiply:}

\text {81*-9=}

\text {Your Answer would be:}

\fbox {-729}

\text {Best of Luck!}

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The mean of 14 numbers is 49. Removing one of the numbers causes the mean to decrease to 43. What number was removed?
Mademuasel [1]

Answer:

126 was removed.

Step-by-step explanation:

The total before division took place was

Total = mean * 14

mean = 49

Total = 49 * 14

Total = 685

Now you subtract x from the total

685 - x

And divide by 13 [one number is missing]

(685 - x)/13

and the result = 43

(685 - x ) / 13 = 43                Multiply both sides by 13

685 - x  = 43 * 13

685 - x = 559                       Subtract 685 from both sides

- x = - 126                             Multiply by - 1

x = 126

4 0
3 years ago
For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h hours of babysitt
Alexeev081 [22]
C = 5h + 3
C = 5(5) + 3
She will make $28
4 0
4 years ago
HELP PLEASE!! Type the correct answer in each box. The graph shown is not a function because points (-1, 2)
ycow [4]

Answer:

(-1,0)

Step-by-step explanation:

Look to see which points have the same x value (in this case -1)

6 0
3 years ago
Read 2 more answers
Convert 1 over 3 into a percentage. With the percentage value as mixed fraction and do not use decimal approximations
Bingel [31]
1/3

Convert to a fraction over 100.

33.33/100

That would be 33.33% or 33 1/3%
6 0
3 years ago
A highway between points A and B has been closed for repairs. An alternative route between there two locations is to travel betw
Kitty [74]

Answer:

The value of Y is 24 km and distance from A to C to B is AC+Y=18+24=42 km

Step-by-step explanation:

Given that A highway between points A and B has been closed for repairs. An alternative route between there two locations is to travel between A and C and then from C to B. we have to find the value of Y and the total distance from A to C to B. Let AB=Z

In ΔBCD and ΔABD

∠BCD=∠ABD       (∵each 90°)

∠D=∠D                 (∵common)

By AA similarity, ΔBCD~ΔABD

∴ their corresponding sides are proportional

\frac{Y}{Z}=\frac{X}{40}=\frac{40}{18+X}

Comparing last two terms, we get

\frac{X}{40}=\frac{40}{18+x}

⇒ X(18+X)=1600

⇒ 18X+X^2=1600

⇒ X^2+18X-1600=0

⇒ X^2-32X+50X-1600=0

⇒ (X-32)(X+50)=0

Hence, the roots are X=32, -50

X=-50 not possible as distance can never negative.

Hence, X=32 km

By applying Pythagoras theorem in ΔBCD we get

BD^2=BC^2+CD^2

40^2=Y^2+32^2

⇒ Y^2=1600-1024=576

⇒ Y=\sqrt576=24km

Hence, the value of Y is 24 km and the distance from A to C to B is AC+Y=18+24=42 km




5 0
4 years ago
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