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3 years ago

(07.06 MC) What is the solution to the equation 1.2m − 0.8 = −2.0m? m = 0.25 m = 0.4 m = 1 m = 4

Mathematics

1 answer:

Vikki [24]3 years ago

8 0

Answer:

m = 0.25

Step-by-step explanation:

-0.8 = -3.2m

m = 0.25

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NemiM [27]

$m\angle ADC=m\angle ADB+m\angle BDC\\\\m\angle ADC=112^o,\ m\angle ADB=6x+7,\ m\angle BDC=12x-3\\\\\text{substitute}\\\\(6x+7)+(12x-3)=112\\\\(6x+12x)+(7-3)=112\\\\18x+4=112\ \ \ \ |-4\\\\18x=108\ \ \ \ |:18\\\\x=6\\\\m\angle ADB=6x+7\to m\angle ADB=(6(6)+7)^o=(36+7)^o=43^o$

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3 years ago

Find the surface area of the hexagonal prism

arsen [322]

Answer:

$4,636.8 \: {in}^{2}$

Step-by-step explanation:

Surface area of the hexagonal prism

= Area of base * Height

= 6*Area of one triangle *height

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3 years ago

The following data are arranged in ascending order and the median of the data is 60.

choli [55]

The median of the data is 60. That means the two middle numbers divided by 2 = 60.

(x + x + 2) / 2 = 60...multiply by 2
2x + 2 = 120
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x + 2 = 59 + 2 = 61

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3 years ago

Carson has a collection of 220 coins. How many coins represent 20% of his collection?

tatuchka [14]

Answer:

The answer is 44

Step-by-step explanation:

If we think 1/5 of 220 is 44 which 1/5 is 20%

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3 years ago

Read 2 more answers

Is the derivative of square root of 6x, 3x^(-1/2)?

strojnjashka [21]

Lets calculate derivative of $\sqrt{6x}$

That is:
$( 6x^{ \frac{1}{2} } )' = 6* \frac{1}{2} * x^{ \frac{1}{2} -1 } = 3* x^{- \frac{1}{2} }$

Comparing that with offered answer we can see that results match.

6 0

3 years ago