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Mrrafil [7]
3 years ago
12

I forgot how to do this please help!!!

Mathematics
1 answer:
pogonyaev3 years ago
7 0
Set up a proportion.

x 5
- = -
5.6 4

4x = 5(5.6)
4x = 28
4x 28
- = -
4 4
x = 7.

Did that help?
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(4)
Jet001 [13]

Answer:

Step-by-step explanation:

Let the number of cockles be c and that of winkles be w.

From the first relation,

w = 2c ..........(I)

From the second relation, 6 winkles are accidentally split.

This in equation form means the following:

c/w- 6 = 3/5

By cross multiplication,

5c = 3(w - 6)...........(ii)

We know w = 2c , let’s substitute this into the second equation.

5c = 3(2c - 6)

5c = 6c - 18

Collecting like times, c = 18

And w = 2c = 2(18) = 36

Hence, there were initially 18 cockles and 36 winkles

7 0
3 years ago
Part of a regression output is provided below. Some of the information has been omitted.
quester [9]

Answer:

301.189

Step-by-step explanation:

Given the table :

Source of Variation - - SS - - - df - - - MS - - - - F

Regression - - - - - -3177.17 - - -2 - - 1588.6

Residual - - - - - - - - ______ --17 - - -17.717

Total - - - - - - - - - - 3478.36 - - 19

Calculate the SSR, Sum of Square residual

The Sum of Square RESIDUAL (SSR), Mean Square Residual (MSR) and Degree of Freedom RESIDUAL (DFR) are related by the formular :

MSR = SSR / DFR

Hence,

SSR = MSR × DFR

Fr the table ;

MSR = 17.717 ; DFR = 17

SSR = (17.717 × 17)

SSR = 301.189

5 0
3 years ago
What percent of 42 is 32
Radda [10]

Answer:

76%

Step-by-step explanation:

In order to find the answer to this question you must divide the output of dividing 42 and 32 by 100 to receive the answer.

42/32

42/32=1.3125    

100=1.3125*x      

100/1.3125=x

76.1904761905=x

x=76.1904761905

Hope this helps.

8 0
3 years ago
You have 30,016 grams of radioactive kind of
Ostrovityanka [42]

Answer:

15,008 grams

Step-by-step explanation:

You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes? 15,008 grams.

4 0
3 years ago
(2 - 5m) (-5) <br> dhwfhsdjduhrhdb ewdewg
Semmy [17]

Answer:

25m−10 would be the answer

5 0
3 years ago
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