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zhenek [66]
3 years ago
9

Which value for x makes the sentence true?

Mathematics
1 answer:
Nat2105 [25]3 years ago
3 0
<span>A. x = 2 
Would make your statement true</span>
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A decorator has just painted 400 tiles blue and green at a ratio of 5:20.how many were painted green ? how many were painted blu
zheka24 [161]
Blue tiles are 80.
Green tiles are 320
8 0
3 years ago
That's the question ?? ​
Oksanka [162]

Step-by-step explanation:

Before we answer, the area of a Circle given it radius is

a = \pi r {}^{2}

The area of a circle given it diameter is

a =  \pi( \frac{d}{2} ) {}^{2}

So let answers question 1-4.

1. The area is

1024\pi

2. The area is

576\pi

3.

1.225\pi

4.

309.76\pi

For the 5th problem, circumference is

\pi \times d

where d is the diameter and

2\pi  r

where r is the radius.

A circumference of 100 m means the radius is 50 because

2\pi \times r = 100\pi

r = 50

So this means the area is

2500 {\pi}

3 0
2 years ago
los trabajadores de una mina se encuentran a 20 metros bajo tierra .Si excavan 3 metros desde alli suben otros 8 metros para cog
Yakvenalex [24]

Step-by-step explanation:

la carretilla estaba a unos 15 metros de altura

8 0
2 years ago
This person did something wrong and I do not know what it is :( Please help this is for points!
Inga [223]

Answer:

It is, indeed, a reduction. But, the scale factor of the dilation should be a fraction instead of a whole number, since the shape has shrunk.

Instead of \frac{KN}{K'N'}, it should be \frac{K'N'}{KN}. That would make it (4 - 2) / (8 - 4) = 2 / 4 = 1/2.

Hope this helps!

7 0
3 years ago
Pumps A, B, and C operate at their respective constant rates. Pumps A and B, operating simultaneously, can fill a certain tank i
shepuryov [24]

Answer:D) 1 hr

Step-by-step explanation:

Given

Pump A and B can fill tank in \frac{6}{5} hr

Pump A and C can fill tank in \frac{3}{2} hr

Pump B and C can fill tank in 2 hr

Let A be the total hr taken A therefore rate of A=\frac{1}{A} /hr

Let B be the total hr taken B therefore rate of B=\frac{1}{B} /hr

Let C be the total hr taken C therefore rate of C=\frac{1}{C} /hr

\frac{1}{A}+\frac{1}{B}=\frac{5}{6}-----1

\frac{1}{B}+\frac{1}{C}=\frac{1}{2}-----2

\frac{1}{A}+\frac{1}{C}=\frac{2}{3}-----3

Adding 1,2 & 3

2(\frac{1}{A}+\frac{1}{B}+\frac{1}{C})=\frac{5}{6}+\frac{1}{2}+\frac{2}{3}

\frac{1}{A}+\frac{1}{B}+\frac{1}{C}=\frac{2}{2}

\frac{1}{A}+\frac{1}{B}+\frac{1}{C}=1

thus time taken by A,B and C combined is 1 hr

7 0
3 years ago
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