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Pavlova-9 [17]
2 years ago
15

I need help please....

Mathematics
2 answers:
rjkz [21]2 years ago
8 0
It would be be x= -7
Semmy [17]2 years ago
5 0

Answer:x=-7

Step-by-step explanation:

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Marion left out reasons from her proof. Which reason best supports the statement?
Tpy6a [65]
Corresponding angle postulate
3 0
3 years ago
In the table below, the number of pounds of blueberries is proportional to the number of pounds of strawberries
Scilla [17]

Answer:

b i think

Step-by-step explanation:

because even i didnt see it i still remember my old lessons

#CarryOnLearning

3 0
2 years ago
11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is
alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.                                          

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

y = 300 - 4x -x^2

where y is  the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius  at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

160 = 300 - 4x -x^2\\x^2 + 4x  - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0
3 years ago
Does 514, 684, 855 make a right triangle
Naily [24]

Answer:

No, it does not.

Step-by-step explanation:

This does not make a right triangle because in order to have a right triangle you must have 2 of the same numbers.

<em><u>For example:</u></em>

900, 800, 900 makes a right triangle

900, 800, 700 does not.

Hope this helped :D

5 0
2 years ago
Simplify.<br><br> –abc + 7abc – 3bc – 8abc<br><br><br> ------------- abc − ------------bc
NISA [10]
- abc + 7abc - 3bc - 8abc
= 6abc - 3bc - 8bc
= -2abs - 3bc

Therefore
- 2abc - 3bc. 

:)
7 0
3 years ago
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