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3 years ago

Please help me with number 3

Mathematics

2 answers:

VashaNatasha [74]3 years ago

5 0

5 kilograms, kilo=1000

almond37 [142]3 years ago

5 0

5000 Grams = 5 Kilograms,

Conversion rate, 1 Kilogram= 1000Grams, Multiply to get the answer.

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Which calculations perform on the calculator will yelled in answer that is approximately the same as 76 ÷ 19/25? Check all that

Zinaida [17]

first：76 ÷ 19/25=100

a:80 / 20 * 1 / 25 =0.16

b:80 * 5/4 =100

c:80 / 5 ÷ 1 / 4 =64

d:80 * 5/4 =100

e:80 * 4/5 =64

So I think both B and D should be the right answer

6 0

3 years ago

Find x Thanks for the help in advance!

Marina86 [1]

I'm not sure if this is the easiest way of doing this, but it surely work.

Let the base of the triangle be AB, and let CH be the height. Just for reference, we have

$AH=2,\quad HB=6,\quad AC=x$

Moreover, let CH=y and BC=z

Now, AHC, CHB and ABC are all right triangles. If we write the pythagorean theorem for each of them, we have the following system

$\begin{cases}4+y^2=x^2\\36+y^2=z^2\\x^2+z^2=64\end{cases}$

If we solve the first two equations for y squared, we have

$y^2=x^2-4\\y^2=z^2-36$

And we can deduce

$z^2 = x^2+32$

So that the third equation becomes

$x^2+x^2+32=64 \iff 2x^2 = 32 \iff x^2=16 \iff x=4$

(we can't accept the negative root because negative lengths make no sense)

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2 years ago

The lot is 1 1/2 acre in all. School uses 1/8 and basketball court uses 3/8 how much is left

Mila [183]

I think the answer is 1 im not sure

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3 years ago

25.5 is what fraction

kolbaska11 [484]

25 1⁄2 hope it helped

Improper fraction:
$\frac{52}{2}$

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3 years ago

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What is 175% of 10 and how to write the work

sergiy2304 [10]

Answer:

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Step-by-step explanation:

175% is written as 175/100. If you move the decimal at the end over twice you get 1.75/1 which is just 1.75. You then multiple 10 by 1.75 and you get 17.5

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2 years ago

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