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Alexxandr [17]
3 years ago
9

Express your answer in scientific notation. 2.2 · 106 – 4.3 · 105 = PLEASE SOMEONE ANSWER

Mathematics
1 answer:
NeX [460]3 years ago
6 0
-2.183 • 10^2

Step by step

2.2•106 - 4.3•105

223.2-451.5

-218.3

(move decimal place 2 to the left - the 2 represents what the power of 10 should be and since the decimal moves to the left, that means that the 2 should be positive)

so your answer is -2.183 • 10^2
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1 inch on a map represents 2 miles what is the scale ratio
bazaltina [42]

Answer:

1 inch

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2 miles

7 0
2 years ago
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EFV and EDW are straight lines.<br>Find the value of x and of y.​
Makovka662 [10]

Answers:

x = 72

y = 83

============================================================

Explanation:

Angle VFG is 50 degrees. The angle adjacent to this is angle EFG which is 180-50 = 130 degrees.

Angle HDW is 77 degrees. The supplementary angle adjacent to this is 180-77 = 103 degrees which is angle EDH.

Pentagon EFGHD has the following five interior angles

  • E = x
  • F = 130
  • G = 170
  • H = 65
  • D = 103

Note that angles F = 130 and D = 103 were angles EFG and EDH we calculated earlier.

For any pentagon, the interior angles always add to 180(n-2) = 180(5-2) = 180*3 = 540 degrees.

This means,

E+F+G+H+D = 540

x+130+170+65+103 = 540

x+468 = 540

x = 72

---------------------------------------

Now focus your attention on triangle THS

We see that the interior angles are

  • T = y
  • H = 65
  • S = 32

The angle H is 65 degrees because it's paired with the other 65 degree angle shown. They are vertical angles.

For any triangle, the angles always add to 180

T+H+S = 180

y+65+32 = 180

y+97 = 180

y = 180-97

y = 83

7 0
2 years ago
2x^3+3x^2-30x+7/x-3 divide
slava [35]
<span>2x^3+3x^2-30x+7/x-3 divide</span>

4 0
2 years ago
For the following right triangle, find the side length x
Juli2301 [7.4K]

Answer:

37

Step-by-step explanation:

35^2+12^2=1369

√1369=37

4 0
3 years ago
Two trains left the station traveling in opposite directions. The distance Train A traveled is modeled by the function d(t)=81t
stira [4]

Answer:

Option A -  The distance Train A traveled in 1 h is equal to the distance Train B traveled in 1 h.

Step-by-step explanation:

Given : The distance Train A traveled is modeled by the function d(t)=81t

where d represents distance in miles and t represents time in hours.

To find : How does the distance Train A traveled in 1 hour compare to the distance Train B traveled in 1 hour?

Solution :

Distance traveled by Train A in 1 hour is

d(t)=81t

d(t)=81(1)=81

Distance traveled by Train B in 1 hour is

d(t)=81t

d(t)=81(1)=81

or for B, we have 324 miles in 4 hours. If that is at a constant speed, it travels 324/4 = 81 miles in one hour

Therefore, The distance Train A traveled in 1 h is equal to the distance Train B traveled in 1 h.

Hence, Option A is correct.


8 0
2 years ago
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