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2 years ago

What is the sum of the expressions for n=-2n=−2 and m=5m=5 ?

Mathematics

1 answer:

Liula [17]2 years ago

6 0

Answer:

- 43

Step-by-step explanation:

Expression: (3m+2n−6) and (−4−6m+7n)

n= -2 and m=5

Before inserting the values, let's add both expressions.

(3m+2n−6) + (−4−6m+7n)

3m+2n−6 −4 − 6m + 7n

-3m + 9n - 10

Inserting the values;

-3(5) + 9(-2) - 10

-15 - 18 -10

- 43

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Dylan is evaluating the expression 13+19+7+10. At one step in his work, Dylan rewrites the equation as 13+7+19+10. Which propert

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2 years ago

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Alaska has a land area of about 1700000 square miles Florida has a land area one tenth of the size of Alaska what is the land ar

AnnyKZ [126]

Answer:

The land area of Florida is $170,000\ mi^2$

Step-by-step explanation:

Let

x -----> the land area of Alaska in square miles

y -----> the land area of Florida in square miles

we know that

The linear equation that represent this problem is equal to

$y=\frac{1}{10}x$ ----> equation A

$x=1,700,000$ ----> equation B

substitute equation B in equation A and solve for y

$y=\frac{1}{10}(1,700,000)=170,000\ mi^2$

Remember that

Florida's land area is one-tenth the size of Alaska is the same as to say that Alaska's land area is ten times the size of Florida

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2 years ago

The mass of the Sun is about 2 × 1027 metric tons, or 2 × 1030 kilograms. How many kilograms are in one metric ton?

Yuri [45]

One metric ton is equal to 1000 Kilograms

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2 years ago

Help me show work please

masha68 [24]

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

(x₁, y₁) - given point

$\bullet\ (2,\ 7),\ m=-4\\\\y-7=-4(x-2)\\\\\bullet(-6,\ -2),\ m=3\\\\y-(-2)=3(x-(-6))\to y+2=3(x+6)\\\\\bullet(12,\ 5),\ m=-3\\\\y-5=-3(x-12)\\\\\bullet(7,\ -6),\ m=\dfrac{1}{2}\\\\y-(-6)=\dfrac{1}{2}(x-7)\to y+6=\dfrac{1}{2}(x-7)\\\\\bullet(4,\ -5),\ m=6\\\\y-(-5)=6(x-4)\to y=y+5=6(x-4)\\\\\bullet(-8,\ 2),\ m=-\dfrac{3}{4}\\\\y-2=-\dfrac{3}{4}(x-(-8))\to y-2=-\dfrac{3}{4}(x+8)$

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2 years ago

A flying disc has a circumference of 81.64 centimeters. What is the area of the flying disc? Use 3.14 for pi

Daniel [21]

9514 1404 393

Answer:

530.66 cm²

Step-by-step explanation:

A formula for the area of the circular disc can be written as ...

A = C²/(4π)

A = (81.64²)/(4·3.14) = 6665.0896/12.56

A = 530.66 . . . . square centimeters

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2 years ago