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Svetradugi [14.3K]
3 years ago
11

The temperature was -5°F and then fell 8°F. Enter the addition expression that represents the final temperature.

Mathematics
1 answer:
sergey [27]3 years ago
5 0
-13°F
That is the final temp
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The cost for the company to ship the boxes varies indirectly with the number of boxes being shipped. If 25 boxes are shipped at
stealth61 [152]
25 times 10 is $250 to ship all 25 boxes hope this is the answer you were looking for srry if not
4 0
3 years ago
Find two numbers whose difference is 13 and whose squares when added is 449.
alex41 [277]
X, y - the numbers

x-y=13 \\
x^2+y^2=449 \\ \\
\hbox{solve the first equation for x:} \\
x-y=13 \\
x=13+y \\ \\
\hbox{substitute the result for x in the second equation:} \\
(13+y)^2+y^2=449 \\
169+26y+y^2+y^2=449 \\
2y^2+26y+169-449=0 \\
2y^2+26y-280=0 \ \ \ \ \ \ \ \ \ \ \ |\div 2 \\
y^2+13y-140=0 \\
y^2+20y-7y-140=0 \\
y(y+20)-7(y+20)=0 \\
(y-7)(y+20)=0 \\
y-7=0 \ \lor \ y+20=0 \\
y=7 \ \lor \ y=-20

x=13+y \\ \Downarrow \\ \hbox{for } y=7: \\
x=13+7 \\
x=20 \\ \\
\hbox{for } y=-20: \\
x=13-20 \\
x=-7 \\ \\
(x,y)=(20,7) \hbox{ or } (x,y)=(-7,-20)

The numbers are 20 and 7 or -7 and -20.
6 0
3 years ago
What is x and what is y in 4x-2y=4
Fed [463]

Answer:

x = 1/2y + 1

y = 2x - 2

Step-by-step explanation:

Let's solve for x.

4x−2y=4

Step 1: Add 2y to both sides.

4x−2y+2y=4+2y

4x=2y+4

Step 2: Divide both sides by 4.

4x

4

=

2y+4

4

x=

1

2

y+1

Answer:

x=

1

2

y+1

Let's solve for y.

4x−2y=4

Step 1: Add -4x to both sides.

4x−2y+−4x=4+−4x

−2y=−4x+4

Step 2: Divide both sides by -2.

−2y

−2

=

−4x+4

−2

y=2x−2

Answer:

y=2x−2

Hope this helps!

brainliest?

5 0
3 years ago
If two angles are adjacent and have a sum of 180, the they are?
Ghella [55]

Answer:

90 degrees

Step-by-step explanation:

90 + 90 = 180


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4 years ago
This pandemic gotta go,
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Fr bro .. i feel the same
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4 years ago
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