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
slava [35]
3 years ago
6

I need help I don’t understand and I need to show my work who would help me??

Mathematics
2 answers:
stich3 [128]3 years ago
5 0

Answer: b

Step-by-step explanation:

In the last question, you wrote on a second equation "13x ...." kkk

Let's go:

We have to check each one answer in the following system:

x - 2y = 7

3x + 7y = 8

I can use the substituition method to solve this system...

x = 7 + 2y

3x + 7y = 8

3(7 + 2y) + 7y = 8

21 + 6y + 7y = 8

13y = 8 - 21

13y = -13

y = -1

x = 7 + 2.(-1)

x = 5

Finally, the correct answer is the second one (letter b).

Gre4nikov [31]3 years ago
4 0
The answer is B! I hope this helps. Enjoy the holidays
You might be interested in
8725+w=10619<br> if u have a answer pleas tell me
kotykmax [81]
Take 10619-<span>8725=1894
w=1894

</span>
7 0
3 years ago
how much money would you spend if you were 2 by 4 bags of Doritos it cost $3.55 per bag show the equation how you got the answer
Aleks04 [339]
3.55 x 4
thats the amount per bag times the number of bags you buy. 
use a calculator and you get $14.20

ANSWER-------> $14.20
5 0
3 years ago
Read 2 more answers
The figure shows two right triangles, each with its longest side on the same line. R 4 How long is XY? Type the answer in the bo
Leokris [45]

Answer: 6

Step-by-step explanation:

Because corresponding sides of similar triangles are proportional,

\frac{XY}{3}=\frac{4}{2}\\ \\ \frac{XY}{3}=2\\ \\ XY=\boxed{6}

8 0
2 years ago
The length of a sticky note measures 77 millimeters.express this measurement in meters. Explain your thinking. Include an equati
Vikentia [17]
Metric system is standard or measurement developed in 1670's by Gabriel Mouton. This is a decimal system of measurement for length, mass and volume. The SI unit of length is meters. In the metric system, the spectrum for the units of length is

km   hm   dkm   m   dm   cm   mm

The greatest starts from the left side" kilometer(km), hectometer(hm), decameter (dkm), meter (m), decimeter (dm), centimeter (cm) and millimeter (mm). The same prefixes are applied to units of mass in grams and volume in liters, like milligrams and milliliters. To use the metric system, place 77 mm above the mm scale. To convert it to m, you have to move the decimal place 3 places to the left. Use the scale to guide you. Hence, 77 millimeters is equal to 0.077 meters.
3 0
3 years ago
Read 2 more answers
The number of significant digits in 650600000 is
kari74 [83]
6506 or 656 is the answer
6 0
3 years ago
Other questions:
  • Which expression is equivalent to g^5
    13·2 answers
  • A truck weighs 5400 lb in Open Wheel race car weighs 1/4 as much how much does the race car weigh
    5·2 answers
  • Marianna buys a snack combo for $2.50 if the sales tax rate is 8% what is the total price of the combo including tax
    6·1 answer
  • You have a bag of 42 candies you want to give to your 6 friends. the company that makes the candies guarantees that exactly 6 of
    12·1 answer
  • What is the mean of 210 160 and 200
    7·2 answers
  • A total of 150 students have taken an Algebra 2 final exam. The scores are normally distributed with a mean of 71% and standard
    5·1 answer
  • SOLVE THIS FAST THE FFIRST ONE WILL BE THE BRAINLIEST
    12·1 answer
  • Please help I dont get it<br>20 points<br>​
    6·1 answer
  • Add (2p4 - 6p2 + 6p3) + (8p + 3p3 + 5p2) =
    6·2 answers
  • By selling a gas oven for 1035 a shopkeeper gain 15%find it's cost price​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!