2 years ago

Which expression is equivalent to the given expression? -2x +8x -9 +4x +7x2 +2 A. B. C. D.

Mathematics

1 answer:

Crazy boy [7]2 years ago

6 0

Answer:

The answer is " $7x^2 +10x -7$ "

Step-by-step explanation:

Let the given value is:

$\to \bold{-2x +8x -9 +4x +7x^2 +2}\\\\$

Solving the given value:

$\to7x^2 -2x +8x +4x-9 +2\\\\\to7x^2 +10x -7\\\\\to7x^2 +10x -7\\\\$

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2 years ago

The mass of the Earth is 5.972x10^24 kg. the mass of the moon is 7.3 x 10^22kg. find the total mass, in kg, of the Earth and the

torisob [31]

Answer:

6045000000000000000000000 kg.

Step-by-step explanation:

We have been given that the mass of Earth is $5.972\times10^{24}$ kg. The mass of the Moon is $7.3\times10^{22}$ kg.

To find the total mass we will add mass of Earth and Moon.

First of all let us convert the given masses in standard form.

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2 years ago

If one pound is the same weight as 16 ounces, how many ounces equal 3.5 pounds? (only input whole numbers.)

astra-53 [7]

Answer: well 56 is the answer

Step-by-step explanation:

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2 years ago

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kolbaska11 [484]

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2 years ago

WILL GIVE BRAINLIEST THANKS AND 5 STARS FOR CORRECT ANSWER Desmond ran a lemonade stand in front of his house for the fans walki

Fiesta28 [93]

Answer:

Step-by-step explanation:

First, convert the 70% so that we can use it with the 80 cups. To do this, convert the percent to a decimal by moving the decimal 2 spaces to the left:

70% → 70.00 → 0.70 → 0.7

70% percent can be seen as 0.7. Multiply this by 80:

$80*0.7=56$

So, 70% of 80 is 56. Desmond sold 56 cups on the second Saturday.

:Done

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2 years ago