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3 years ago

Khan Academy math question. Just answer the picture

Mathematics

1 answer:

MrRissso [65]3 years ago

4 0

Answer is 175
To start you need to work backwards from the mean so do 158*4 to give you the total of the revenue then simply minus what was given to get 175
Hope this helped

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Given a function described as equation y =3x+4 ,what is y when x is 1,2,3

belka [17]

Answer:

When x =1, y = 3(1) + 4 = 7

When x = 2, y = 3(2) + 4 = 10

When x = 3, y = 3(3) + 4 = 13

5 0

3 years ago

A bag of sweets contains mints and toffees only.There are 21 mints in the bag.One quarter of the sweets are toffees.Calculate th

Vedmedyk [2.9K]

Answer:

Total number of sweets in the bag is 28

Step-by-step explanation:

let the total number of sweets in the bag be x :

${ \tt{for \: toffees : }} \\ \frac{1}{4} \: of \: x$

therefore fraction of mints = 1 - fraction of toffees :

$= \frac{4}{4} - \frac{1}{4} \\ \\ = \frac{3}{4}$

therefore:

$= > \frac{3}{4} \: of \: x = 21 \: mints \\ \\ \frac{3}{4} \times x = 21 \\ 3x = 21 \times 4 \\ x = \frac{21 \times 4}{3} \\ x = 28$

total sweets number is 28

5 0

3 years ago

Pls help I can’t do this 20 points

Serhud [2]

Answer:

u have it done now right?

Step-by-step explanation:

8 0

4 years ago

Help??????????????????

Neko [114]

Answer:

Step-by-step explanation:

52= 1/2(64 + x)

52 = 32 + 0.5x

52-32= 32-32 + .5x

20=.5x

Divide both sides by .5x

X = 40.

5 0

3 years ago

To determine the number of trout in a lake, a conservationist catches 174 trout, tags them and throws them back into the lake.

Alja [10]

Answer:

348 trouts in the lake

Step-by-step explanation:

Since this is basically a ratio problem and we are given three values we can use the rule of three to solve for the missing variable which would be the total amount of trouts in the lake. To do so we multiply the total amount trouts tagged by the number of trouts caught later. Then we multiply that product by the amount that were found to be tagged later.

22 total trouts caught later <=========> 11 trouts were tagged

x total trouts <=========> 174 trouts tagged

(174 * 22) / 11 = 348 total trouts in the lake

Finally, we can see that the conservationist would expect there to be around 348 trouts in the lake.

5 0

4 years ago