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Inga [223]
3 years ago
7

X + 8 = -15, x = ? What is X? Please give a explanation on how you got your answer

Mathematics
2 answers:
Katarina [22]3 years ago
8 0

Answer:

-23

Step-by-step explanation:

I just did 8+15=23 but made it negative. so you can do

-23+8= -15

qwelly [4]3 years ago
3 0

Answer:

-23

Step-by-step explanation:

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Roma sherry drove 80 miles from her home town to her​ parents' town. during her return​ trip, she was able to increase her speed
mr_godi [17]
<span>Answer: Roma Sherry drove 330 miles from her hometown to Tucson. During her return trip, she was able to increase her speed by 11 mph. If her return trip took 1 hour less time, find her original speed and her speed returning home. : Let s = original speed then (s+11) = return speed : Write a time equation: Time = distance%2Fspeed : Original time = return time + 1 hr 330%2Fs = 330%2F%28%28s%2B11%29%29 + 1 : Multiply equation by s(s+11) and you have: 330(s+11) = 330s + s(s+11) : 330s + 3630 = 330s + s^2 + 11s : 0 = 330s - 330s + s^2 + 11s - 3630 : A quadratic equation: s^2 + 11s - 3630 = 0 Factor this to: (s + 66)(s - 55) = 0 Positive solution s = 55 mph is original speed. : Find the time 330/55 = 6 hr, original time and 330/66 = 5 hrs, faster time; confirms our solution.</span>
7 0
3 years ago
If M is between S and T, SM = 9x - 8,<br> MT = 2x + 3, and ST = 72. Find x.
kolezko [41]

Answer:

7

Step-by-step explanation:

Since, M is between S and T.

Therefore, SM + MT = ST

9x- 8 + 2x + 3 = 72

11x - 5 = 72

11x = 72 + 5

11x = 77

x = 77/11

x = 7

3 0
3 years ago
Last week a sales representative earned a salary of $412.56 and a commission of 72.48 how much did the earn in all?
Lesechka [4]

Answer:

Step-by-step explanation:

He earned 485.04. You have to add. Hence the words in all

8 0
3 years ago
Solve each equation by factoring x^2+4x+4=0 ​
makkiz [27]

Answer: x = -2

<u>Step-by-step explanation:</u>

Find 2 numbers whose product is the c-value of 4 and their sum is the b-value of 4.

x² + 4x + 4 = 0

              ∧

           1 + 4 = 5  

           2 + 2 = 4  <em>this works!</em>   <em>so the factors are: </em>

(x + 2)(x + 2) = 0

x + 2 = 0      and      x + 2 = 0

     x = -2      and             x = -2  --> <em>same answer so only need to list it once</em>

6 0
3 years ago
I WILL GIVE BRAINLIEST
Andre45 [30]

Hello there! Your answer is B. Negative.

Since -4 and -3/4 are both negatives, the negatives cancel eachother out and you are left with a positive. :)

7 0
3 years ago
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