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evablogger [386]
3 years ago
13

PLEASE HELP!!! Find x a. x=1 b. x=-1 c. x=-9 d. x=9

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer:

D

Step-by-step explanation:

I'm not that sure but 2x9-8 = 10

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PLSSS HELP IF YOU TURLY KNOW THISS
lesantik [10]

Answer:

x=4 hope this helps

Step-by-step explanation:

3 0
2 years ago
(13) The temperature on a cold winter day is 2 degrees below zero. In the night, the temperature drops an additional 14 degrees.
EastWind [94]
Well, in the first one, 2 degrees below zero is -2 degrees, and then it says that it dropped 14 degrees, which means it dropped -14 degrees, so to know the total amount it dropped you would just have to add -2 plus -14 which is -16 degrees, so your answer for the first question would be the last answer, -16 degrees.

For the second question, just know that whenever a negative number is BY ITSELF in parentheses, that means it is used like a positive number in the equation. So (-12) automatically becomes 12. Now, since the problem is asking for a SUM, (the answer to an ADDITION problem; when you add instead of subtract), you would turn that minus symbol to a plus symbol, and add normally to get your final answer; 30 + 12 = 42. To check if this is correct, just type in <span>30 – (–12) to a calculator and you'll get the same answer! :D
Hope this helps! :3</span>
5 0
3 years ago
What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =
Masteriza [31]

For this case we have the following system of equations:

x-3y = -13\\5x + 7y = 34

From the first equation we clear "x":

x = -13 + 3y

We substitute in the second equation:

5 (-13 + 3y) + 7y = 34

We apply distributive property:

-65 + 15y + 7y = 34

We add similar terms:

-65 + 22y = 34

We add 65 to both sides:

22y = 34 + 65\\22y = 99

We divide between 22 on both sides:

y = \frac {99} {22}\\y = \frac {9} {2}

We look for the value of the variable "x":

x = -13 + 3 \frac {9} {2}\\x = -13 + \frac {27} {2}\\x = \frac {-26 + 27} {2}\\x = \frac {1} {2}

Thus, the solution of the system is:

(x, y): (\frac {1} {2}, \frac {9} {2})

ANswer:

(x, y): (\frac {1} {2}, \frac {9} {2})

5 0
3 years ago
Read 2 more answers
Find the domain and range of the function graphed below.
anyanavicka [17]

domain = [-3 , 1)

range = [-5 , 4]

have a nice day

and this shape ( and that [ matters so be careful.

7 0
2 years ago
What is the percent change in the price of a gallon of gas, to the nearest whole percent?
Hatshy [7]

Answer: 3.499 now 3.079 is correct

8 0
3 years ago
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