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
Elena L [17]
4 years ago
15

It always confuses me when they make me do the baby steps

Mathematics
1 answer:
fgiga [73]4 years ago
5 0

A. Alright, we want to multiply one equation by a constant to make it cancel out with the second. Since the first equation has a "blank" y, let's multiply the first equation by <em>2</em>.

3x-y=0 → 2(3x-y=0) = 6x - 2y = 0

5x+2y=22


The answer for this part would be: 6x - 2y = 0 and 5x + 2y = 22


B. So now we combine them:

6x - 2y = 0

+ + +

5x + 2y = 22

= = =

11x + 0 = 22 ← The answer


C. Now that we have the equation 11x = 22, we solve for x

11x = 22 ← Divide both sides by 11

x = 2 ← The answer


D. Now that we have x=2, we plug that back in to 5x+2y=22 and solve for y:

5(2)+2y = 22

10 + 2y = 22

2y = 12

y = 6


<u>Therefore, the solution to this problem is x = 2 and y = 6</u>


You might be interested in
1/3x + a= 1/2b for x
TiliK225 [7]
The answer is x=.5/.333b-.333a
7 0
3 years ago
Can someone help answer this please
Pani-rosa [81]
B; C is wrong as it cannot be expressed by the speedometer, leaving A, B, and D. B is correct as is suggests accuracy to the best possibility. 

Merry Christmas! Hope I helped!
4 0
3 years ago
I need HELP ASAP
maxonik [38]

Answer:

-15 is how many tests per hour i think, and 78 is how many tests total

Step-by-step explanation:

= 78 − 15ℎ

1 hour would be

78-(15x1)=63

2 hours would be

78-(15x2)=48

and so on.

3 0
4 years ago
If the spinner is spun 360 times what is most reasonable estimate of the number of times the spinner will land on red or yellow
Anuta_ua [19.1K]

Answer:

180

If you spin the spinner 360 times, and there's two sides, yellow and red. Just do 360 ÷ 2 and there's your answer.

7 0
4 years ago
A batch of 330 samples of rejuvenated mitochondria contains 6 that are mutated (or defective). Two are selected from the batch,
Leno4ka [110]

Answer:

(a) Probability = 0.01520

(b) Probability = 0.00028

(c) Probability = 0.96391

Step-by-step explanation:

Total mitochondria = 330

Defective = 6

(a) Without replacement, if the first selection contains a defective mitochondria, we have a total of 5 defective remaining from a total of 329 mitochondria. Thus the probability the second one is defective Given the first one was defective will be :

Probability second is defective given the first one is not = 5 / 329 = 0.01520

(b) The probability the first is defective is : 6 / 330 = 0.01818

The probability the second is defective (without replacement) = 5 / 329 = 0.01520

The probability both are defective = 0.01818 * 0.01520 = 0.00028

(c) Probability the first one is acceptable = 324 / 330 = 0.98182

Probability the second one is acceptable = 323 / 329 = 0.98176

Probability both are acceptable = 0.98182 * 0.98176 = 0.96391

3 0
4 years ago
Other questions:
  • Which set of coordinates, paired with (-3, -2) and (-5, -2), result in a square?
    10·1 answer
  • Simplify 3/5-2/7+/45-/28.
    9·1 answer
  • 8 is what percent of 18
    13·2 answers
  • IS ANYONE GOOD IN REFLECTIONS??? BRAINLEST AND POINTS​
    9·1 answer
  • If the base of a rectangular prism has an area of 2x^2+3x sq in. The volume of the perimeter is 6x^3+13x^2+6x cubic in. Which ex
    7·1 answer
  • I will give brainlyiest <br> Evaluate the expression 5(7 − 4)︿2 ÷ 3 + 11.<br> 3<br> 14<br> 26<br> 33
    13·1 answer
  • 35.6 = the square root of 15.3^2 + x^2. Find x​
    8·1 answer
  • ANSWER QUESTION POSTED PLZ
    13·1 answer
  • 1 Find the area of the Circle below: Чcm​
    6·2 answers
  • Hello please help i’ll give brainliest
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!