2 years ago

The mean age of 10 people in a room was 16. When Toby walked into the room, the mean age went up to 18.

Mathematics

1 answer:

almond37 [142]2 years ago

6 0

24? I dunno. but I will just assume it is.

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Complete this number sentence with the correct symbol.<br><br> 0.90 ___ 0.9 <br> PLZZZZ I NEED HELP

Mars2501 [29]

= because 0.9 and 0.90 are the same

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2 years ago

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Which of the following is the solution to |-2x-15|≤7

sergeinik [125]

Answer:

Step-by-step explanation:

C. -11<x<-4

|-2x-15|<7 split into possible cases

- 2x - 15 < 7, - 2 x - 15 > 0

-(- 2x - 15 ) <7, -2x - 15 < 0 solve the inequalities

x>-11, x < -15/2

x< -4, x> -15/2 Find the intersections

[ -11, -15/2 ]

-15/2, -4] Find the union

[-11, -4 ] Simplify

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3 years ago

The difference of two numbers is 7. Their sum is 41. What is the smaller number?

kicyunya [14]

17 is the smaller number.
EXPLANATION:

The numbers are 24 and 17.

Difference of 7? Check.

Sum of 41? Check.

BOOM magic

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3 years ago

Attachment Mathswatch!!

Travka [436]

Answer:

y=x-1

Step-by-step explanation:

Gradient=1

Rise/run=1/1=1

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3 years ago

If the volume of the pyramid shown is 360 inches cubed, what is its height?

dimaraw [331]

Answer:

9 inches

Step-by-step explanation:

The formula for the volume of a rectangular pyramid is $V = \frac{1}{3}(l*w*h)$

Here we have volume (V), base (L), and width (W)
V = 360 in³, L = 12 in, W = 10 in

We need to manipulate the volume equation to solve for the height (H)

First we need to multiply both sides by 3 to get rid of the fraction: 3V = L×W×H
Then we need to divide both sides by (L×W) to get: $\frac{3V}{lw} =h$

Now we can plug in the given values:

$\frac{3(360in^{3}) }{(12 in)(10in)} =\frac{1080in^{3} }{120in^{2} } = 9in$
The height is 9 inches

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3 years ago