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2 years ago

39 kilos of salt per minute is how many grams

1 answer:

Elena-2011 [213]2 years ago

4 0

King Henry Doesn’t usually drink chocolate milk. Kilo Heca Deca unit deci centi milli. Multiply 39 by 1000 to get 39000.

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HELP MEEEEEEEEE plz

Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

Red : Blue :

3 8

We have 40 blue marbles

Multiply 8 by what to get 40

40/8 =5

So we need to multiply by 5

Red : Blue :

3*5 8*5

15 40

There are 15 red marbles

8 0

3 years ago

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Find the mean of 6, 10 graphically.

sergey [27]

Answer:

10 + 6 + 20 = 36 / 3 = 12.

Step-by-step explanation:

The you started studying statistics and all of a sudden the “average” is now called the mean. What happened? The answer is that they are.

7 0

2 years ago

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Convert the Cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation.

SashulF [63]

<u>ANSWER</u>

${r}^{2} = 4 \cos2\theta$

<u>EXPLANATION</u>

The Cartesian equation is

${( {x}^{2} + {y}^{2} )}^{2} = 4( {x}^{2} - {y}^{2} )$

We substitute

$x = r \cos( \theta)$

$y = r \sin( \theta)$

and

${x}^{2} + {y}^{2} = {r}^{2}$

This implies that

${( {r}^{2} )}^{2} = 4(( { r \cos\theta) }^{2} - {(r \sin\theta) }^{2} )$

Let us evaluate the exponents to get:

${r}^{4} = 4({ {r}^{2} \cos^{2}\theta } - {r}^{2} \sin^{2}\theta)$

Factor the RHS to get:

${r}^{4} = 4{r}^{2} ({ \cos^{2}\theta } - \sin^{2}\theta)$

Divide through by r²

${r}^{2} = 4 ({ \cos^{2}\theta } - \sin^{2}\theta)$

Apply the double angle identity

$\cos^{2}\theta -\sin^{2}\theta= \cos(2 \theta)$

The polar equation then becomes:

${r}^{2} = 4 \cos2\theta$

7 0

2 years ago

Help me plz i have 3 question 30 points

Vlad1618 [11]

Here're the answers!!! Good luck!!
1) a = -7 (The first picture -Left to right)
2) x = -39
3) a = -2.1 (The last picture left to right)

Hoping this helped you out!! If my answer best helped you, please mark Brainliest! ;)

3 0

3 years ago

Leo has one week to read his 280 page library book.he wants to read one seventh of his book each night. how many pages will he n

nevsk [136]

280 divided by 7 = 40 pages every night
(28/7=4, add a zero)

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3 years ago

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