1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Paha777 [63]
3 years ago
11

Pls help, 20 points!!

Mathematics
1 answer:
klemol [59]3 years ago
7 0

Answer:

(-18,9)

Step-by-step explanation (work shown in picture attached):

1) The first step in solving by substitution is to isolate the y-term in one of the equations if it is not already isolated. Isolate y in the first equation by dividing both sides by -2. This leaves us with the equation y = \frac{-x}{2}

2) Now, substitute \frac{-x}{2} for the y in the second equation. Simplify and isolate x. (You can multiply everything by -2 to get rid of the fraction.) This leaves us with x = -18.

3) We've found the x-value of the solution, -18. Now, substitute -18 for x back into one of the original equations (I chose the first one because it was simple) and isolate y. This gives us y = 9. Thus, in point form, the answer is (-18,9).

You might be interested in
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBB ?
nadezda [96]

Answer:

uh.

Step-by-step explanation:

3 0
3 years ago
Consider two people being randomly selected. (For simplicity, ignore leap years.)
inna [77]

Answer:

(a) = \frac{144}{133225} \\\\(b) = \frac{1}{365}

Step-by-step explanation:

Part (a) the probability that two people have a birthday on the 9th of any month.

Neglecting leap year, there are 365 days in a year.

There are 12 possible 9th in months that make a year calendar.

If two people have birthday on 9th; P(1st person) and P(2nd person).

=\frac{12}{365} X\frac{12}{365}  = \frac{144}{133225}

Part (b) the probability that two people have a birthday on the same day of the same month

P(2 people selected have birthday on the same day of same month) + P(2 people selected not having birthday on  same day of same month) = 1

P(2 people selected not having birthday on  same day of same month):

= \frac{365}{365} X \frac{364}{365} =\frac{364}{365}

P(2 people selected have birthday on the same day of same month) = 1-\frac{364}{365} \\\\= \frac{1}{365}

7 0
3 years ago
Need help with homework will give crown
prohojiy [21]
For the first one it’s D.3
6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csf%20x-5%3D16" id="TexFormula1" title="\sf x-5=16" alt="\sf x-5=16" align="absmiddle" class
scZoUnD [109]

Answer:

21

Step-by-step explanation:

7 0
3 years ago
Question 15 please. I missed class cause of testing
amid [387]
You would first calculate the price per pound and then use that to calculate the correct price of each bag.
7 0
3 years ago
Other questions:
  • Which point satisfies the system of equations y = 3x − 2 and y = -2x + 3?
    7·1 answer
  • Planet ruba has a population of 1 million alien planet Zamba has one hundred thousand million how many more aliens does planet r
    12·1 answer
  • A.The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the
    9·1 answer
  • I'm not the best at math, I could really use some help ;)
    12·1 answer
  • Help me please:)) ........
    10·1 answer
  • The temperature of a freezer started at 18 degrees Celsius.After cooling for a few hours, the freezer had a temperature of -12 d
    6·1 answer
  • A baby girl weighed 18 lb 10 oz at 11 months and 20 lb 2 oz at 12 months. How much weight did the baby gain during this month?
    15·1 answer
  • I WILL MARK BRAINLIEST!!
    8·2 answers
  • Katoomba Scenic Railway in Australia is the steepest railway in the world. The railway makes an angle of about 52 degrees with t
    13·1 answer
  • Brass is an alloy made by melting and mixing copper and zinc. A metallurgist has two brass
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!