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vekshin1
3 years ago
14

2x+x+5x= what’s the answer?

Mathematics
2 answers:
adell [148]3 years ago
7 0

Answer:

8x

Step-by-step explanation:

Snowcat [4.5K]3 years ago
3 0
You add up the numbers 2+1+5 which gives you 8. The x has to be next to the 8. So the answer is 8x is the answer to the question.
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<span>An absolute value graph will only have y values greater than 0.

TRUTH</span>
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3 years ago
Read 2 more answers
Three friends met for a book club at a coffee shop, each friend ordered a cup of coffee and two donuts. the total of the order w
4vir4ik [10]

Answer:

Cost\ of\ donut=\frac{49}{24}\approx \$2.042\\\\cost\ of\ donuts=\frac{49}{4}\approx \$12.25

Step-by-step explanation:

a.

Let\ cost\ of\ coffee=y\\\\cost\ of\ one\ donut=x\\\\Each\ friend\ buy\ one\ coffee\ and\ two\ donuts\\\\Amount\ for\ 1\ friend=Cost\ of\ coffee+2\times cost\ of\ donut\\\\Amount\ for\ 1\ friend=y+2x\\\\Amount\ required\ for\ 3\ friend=3\times Amount\ for\ 1\ friend\\\\Amount\ required\ for\ 3\ friend=3\times (y+2x)\\\\Amount\ required\ for\ 3\ friend=3y+6x\\\\Total\ bill=\$ 22\\\\3y+2x=22\\\\Given\ cost\ of\ coffee=\$3.25\\\\y=\$3.25

Hence\ solution\ of\ following\ system\ of\ equation\ will\ give\ cost\ of\ donut:\\\\3y+6x=22\\\\y=3.25\\\\\\Substitute\ y=3.25\ in\ first\ equation\\\\3\times 3.25+6x=22\\\\9.75+6x=22\\\\6x=22-9.75\\\\6x=12.25\\\\x=\frac{12.25}{6}\\\\x=\frac{49}{24}\approx \$2.042\\\\Cost\ of\ donut=\frac{49}{24}\approx \$2.042

See attached diagram.

b.

Each\ friend\ takes\ 2\ donuts\\\\Total\ donuts=Number\ of\ friends\times 2\\\\Total\ donuts=3\times 2=6\\\\cost\ of\ donuts=number\ of\ donuts\times cost\ of\ 1\ donut\\\\cost\ of\ donuts=6\times \frac{49}{24}\\\\cost\ of\ donuts=\frac{49}{4}\approx \$12.25

5 0
3 years ago
Four of a sample of 150 computers will be selected and tested. How many ways are there to make this selection? Type a
OleMash [197]

Answer:

20260275

Step-by-step explanation:

the question is same as selecting 4 things from 150 things

= C(150,4). (nCr formula)

=[150×149×148×147]÷[4×3×2×1]

= 49×75×149×37

= 20260275

6 0
4 years ago
A monomial usually has the form ______, where a is ______ and n is a ______?
Ksenya-84 [330]

a monomial usually has the form _ax_^n____, where a is __constant____ and n is a __integer____?

5 0
4 years ago
The gradient of the curve
AleksAgata [21]

Answer:

<u>Coordinate</u><u> </u><u>of</u><u> </u><u>P</u><u> </u><u>is</u><u> </u><u>(</u><u>-</u><u>2</u><u>,</u><u> </u><u>-</u><u>3</u><u>)</u>

Step-by-step explanation:

Gradient is the derivative of the curve:

y = {3x}^{2} + 11x + 7 \\  \\  \frac{dy}{dx}  = 6x + 11

but dy/dx is -1 :

6x + 11 =  -  1 \\ 6x =  - 12 \\ x =  - 2

substitute for x :

y = 3( - 2) {}^{2}  + 11( - 2) + 7 \\ y =   - 3

3 0
3 years ago
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