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xxTIMURxx [149]
3 years ago
15

If the temperature is -1 degrees and it drops 5 degrees overnight what is the new temperature?

Mathematics
1 answer:
EastWind [94]3 years ago
6 0

Answer:

-6

Step-by-step explanation:

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Z+z+z for x=2, y=-3 , z=-4
REY [17]

Answer:

-12

Step-by-step explanation:

Just sustitute the z for -4

z+z+z

-4+(-4)+(-4)

=-12

I hope this help :)

5 0
3 years ago
Read 2 more answers
From a distance of 110 m, the angle of elevation to the top spire of a tower is 31°.
sesenic [268]

Answer:

63.51 m

Step-by-step explanation:

TOA

let o be the height of the building

tan31°=o/110m

0=110m tan31°

o=63.51m

8 0
2 years ago
The score on a trivia game is obtained by subtracting the number of incorrect answer from twice the number of correct answer. If
brilliants [131]

Answer:

The player answer correctly 30 questions

Step-by-step explanation:

First we have to develop the information that gives us as 2 equations

x = correct answer

y = incorrect answer

z = score = 40

h = total answer = 50

2x - y = z               x + y = h

2x - y = 40             x + y = 50

we clear the x of one equation and replace the value of x in the other equation

x = 50 - y

2x - y = 40

2(50 - y) - y = 40

100 - 2y - y = 40

-3y = 40 -100

y = -60/-3

y = 20

x = 50 - y

x = 50 - 20

x = 30

3 0
3 years ago
What is 4[2(21-17)+3]
vagabundo [1.1K]
To solve this problem, we should understand how order of operations works. Perhaps the best way to show you this would be solving the problem with all of the work clearly labeled?

=4[2(21-17)+3]    Original Problem
=4[2(4)+3]           Solved the Parentheses
=4[8+3]                Multiplied the 2 and 4
=4[11]                   Added the 8 and 3
=44                       Multiplied the 4 and 11

An easy way to remember this is PEMDAS, which is an acronym for Parentheses, Exponents, Multiplication/Division, and Addition/Subtraction. Although it will not apply in this scenario (because we have brackets), it will come in handy for many others like this.

Using all of the information above, we can conclude that this expression equals 4.  

6 0
3 years ago
Can someone please help me
Mrrafil [7]

Answer:

y=3

Step-by-step explanation:

7y-(5y+4)=10

7y-5y+4=10

         -4    -4

7y-5y=6

2y=6

÷2   ÷2

y=3

5 0
3 years ago
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