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Pavel [41]
3 years ago
12

Which shows the expression below in simplified form? (2.2 × 1012) + (1.7 × 109)

Mathematics
2 answers:
AleksAgata [21]3 years ago
7 0
<span>(2.2 × 1012) + (1.7 × 109) = 2411.7</span>
madreJ [45]3 years ago
3 0
1) First, work out the brackets. (2.2 x 1012)= 2226.4
                                                  (1.7 x 109)=185.3


2) Next, because there is a plus sign between the brackets, you need to add up both the answers. 
                              2226.4 + 185.3= 2411.7 ← and that is your answer!
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Pls help quick i need it soon
Afina-wow [57]

Answer:

Area = 32m^2q

Step-by-step explanation:

Area = bh

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Area = 32m^2q

5 0
2 years ago
Find the surface are of the cylinder in terms of pi
Andrej [43]
Hello!

To find the surface area of a cylinder you use the equation

SA = 2 \pi rh + 2 \pi  r^{2}

SA is surface area
r is radius
h is height

PUt in the values you know

SA = 2 \pi (7)(18) + 2 \pi  * 7^{2}

Square the number

SA = 2 \pi (7)(18) + 2 \pi * 49

Multiply 7 and 18

SA = 2 \pi * 126 + 2 \pi  * 49

Multiply 126 by 2

SA = 252 \pi  + 2 \pi  * 49

Multiply the 49 by 2

SA = 252 \pi  + 98 \pi

Add

SA = 350 \pi

The answer is A)350 \pi cm^{2}

Hope this helps!
7 0
3 years ago
PLEASE HELP 20 POINTS<br> solve the system of equations y=-5x-7 and -4x-3y=-1 by substitution.
Ainat [17]

Answer:

Solution: x = -2; y = 3 or (-2, 3)

Step-by-step explanation:

<u>Equation 1:</u>  y = -5x - 7  

<u>Equation 2:</u> -4x - 3y = -1

Substitute the value of y in Equation 1 into the Equation 2:

-4x - 3(-5x - 7)  = -1

-4x +15x + 21 = -1

Combine like terms:

11x + 21 =  - 1

Subtract 21 from both sides:

11x + 21 - 21 =  - 1 - 21

11x = -22

Divide both sides by 11 to solve for x:

11x/11 = -22/11

x = -2

Now that we have the value for x, substitute x = 2 into Equation 2 to solve for y:

-4x - 3y = -1

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8 - 3y = -1

Subtract 8 from both sides:

8 - 8 - 3y = -1 - 8

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Divide both sides by -3 to solve for y:

-3y/-3 = -9/-3

y = 3

Therefore, the solution to the given systems of linear equations is:

x = -2; y = 3 or (-2, 3)

Please mark my answers as the Brainliest if you find this helpful :)

7 0
3 years ago
.21 of what number is 7.98
AlladinOne [14]
.21 as a percentage is 21%
You can divide 7.98 by 21 then multiply by 100 which gives you an answer of 38.

Hope this helps :)
8 0
3 years ago
Which of the distributions is left skewed?
tino4ka555 [31]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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