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svetlana [45]
3 years ago
9

Every 365.25 days the Earth completes one revolution around the Sun. About how many degrees does the Earth travel each day?

Mathematics
1 answer:
TiliK225 [7]3 years ago
4 0
About 1 degree a day
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Factor 70a + 50. Write your answer as a product with a whole number greater than 1
olga2289 [7]

Answer:

  10(7a +5)

Step-by-step explanation:

The greatest common factor of the two terms is 10. Factoring that out gives ...

  10(7a +5)

_____

Other possibilities for meeting the problem requirement are ...

  • 2(35a +25)
  • 5(14a +10)
3 0
3 years ago
Can someone please help!!!
RideAnS [48]

Answers:

  • System 1:  x = 3 and y = -5
  • System 2: x = 1 and y = 2

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

Explanation:

For now, let's focus on system 1.

We have identical copies of "2y" in each equation, which means that if we were to subtract the equations straight down, then the y terms cancel out. That allows us to solve for x.

  • The x terms subtract to 7x-x = 6x
  • The y terms subtract to 0 and go away
  • The right hand sides subtract to 11 minus (-7) = 11-(-7) = 11+7 = 18

After doing those subtractions, we have the new equation 6x = 18 which solves to x = 3. Divide both sides by 6 to isolate x.

Once we know x, we can find out y.

7x+2y = 11

7(3)+2y = 11

21+2y = 11

2y = 11-21

2y = -10

y = -10/2

y = -5

or we can say

x+2y = -7

3+2y = -7

2y = -7-3

2y = -10

y = -10/2

y = -5

We should lead to the same y value either way. This helps confirm we have the correct x value.

Overall, the solution to system 1 is (x,y) = (3, -5)

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

Now onto system 2.

Unfortunately, we don't have identical y terms this time. But what we can do is double everything in the second equation to go from -x+y = 1 to -2x+2y = 2.

The new equivalent system is

\begin{cases}7x+2y = 11\\-2x+2y = 2\end{cases}

Now we have the same situation as before: Subtract straight down, solve for x.

  • The x terms subtract to 7x-(-2x) = 7x+2x = 9x
  • The y terms go away when subtracting
  • The right hand sides subtract to 11-2 = 9

So we have 9x = 9 and that solves to x = 1.

We'll use this x to find the y value.

7x+2y = 11

7(1)+2y = 11

7+2y = 11

2y = 11-7

2y = 4

y = 4/2

y = 2

Or you could pick on the second equation

-x+y = 1

-1+y = 1

y = 1+1

y = 2

6 0
2 years ago
How many miles could an antelope travel in 3 hours if it maintained a speed of 62 feet per second?
kkurt [141]
Per means divide. So.. 

Step 1. Find ur equation. 63\3

Step 2. Solve ur equation. 63\3 = 21
I think thats right.
4 0
3 years ago
Luke is drawing a map of his block. The actual block is 1800 feet long and 1260 feet wide. Luke needs his drawing to fit on his
Georgia [21]
The actual block is 1800 feet long and 1260 feet wide. We know that 1 foot is equivalent to 12 inches.

Luke is now using the Feet scale measurement.

Solving for the area in square inches is shown below:
Area = L * W
Area = (1800 feet *12 inches/1 foot) * (1260 feet *12 inches/1 foot)
Area = 326.592 x10^6 inches²
8 0
3 years ago
Add and make it lowest term:3/4+9/10
stealth61 [152]

Answer:

1 13/20

Step-by-step explanation:

3/4+9/10 = 15/20+18/20=33/20

33/20 as a mixed number is 1 13/20 which is in lowest terms.

4 0
2 years ago
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