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Over [174]
3 years ago
6

Help ASAP!!!!!!!! PLEASEE

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0

Her brother sent C. 490 messages.

In order to find this, we need to set it up as a proportion. Once we have done that, we can cross multiply and solve for the unknown variable.

(4/7) = (280/x) -----> Cross multiply.

4 * x = 7 * 280

4x = 1960

x = 490

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Slips of paper are numbered 1 through 10. If one slip is drawn and replaced 40 times, how many times should the slip with number
Masja [62]

Hey there!

We have 10 pieces of paper. The probability of drawing a 10 is 1/10.  Therefore, if we were to draw ten times, the ten should probably be drawn once. If we multiplied our number of drawings by four (10*4=40), our outcome of seeing our slip with the ten should also quadruple and become four times. (1*4=4)

I hope that this helps! Have an awesome day!

6 0
3 years ago
True or false? Jdkdjdjdjjddjds
Damm [24]

Answer:

True

Step-by-step explanation:

To divide fractions, flip one of the fractions then multiply them together.

-1/10 ÷ -3/5 =

-1/10 ÷ -5/3=

-1/10 x -5/3 = 5/30

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3 0
3 years ago
Suppose a cylinder has a diameter of 18 feet and a height of h feet. Which equation can be used to find V, the volume of the cyl
IrinaVladis [17]

Answer: option A

Step-by-step explanation:

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V=\pi r^2h

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r=\frac{18ft}{2}\\\\r=9ft

Substitute the radius into the formula. Then you get the following equation that can be used to find V, the volume of the cylinder:

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3 0
3 years ago
Read 2 more answers
Can you help me with 12-3(x+1)=30
inysia [295]
Greetings!

12-3(x+1)=30
Distribute the Parenthesis.
12-3x-3=30
Combine like terms.
9-3x=30
Add -9 to both sides.
(15-3x)+(-9)=(30)+(-9)
-3x=21
Divide both sides by -3.
(-3x)/-3=(21)/-3
The Answer Is:
x=-7

Hope this helps.
-Benjamin
7 0
3 years ago
in triunghiul isoscel ABC, AB=AC=36cm, m(BAC)=45°, iar BE perpendicular pe AC, E apartine (AC). Calculati Aria ABC, BE
melisa1 [442]

when given SAS, the area (A) of the triangle = (side1 · sin θ · side2)/2

A = (36 · sin 45° · 36)/2

= (36² · √2)/4

= 9 · 36 · √2

= 324√2

≈ 458.2

4 0
3 years ago
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