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
elena55 [62]
3 years ago
9

What is the result of subtracting the second equation from the first? \begin{aligned} -2x+7y &= 10 \\\\ 3x+7y &= 2 \end{

aligned} −2x+7y=10 3x+7y=2 ​ ​
Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0

Answer:

The result is that 5x = -8

Step-by-step explanation:

Here, we want to subtract 3x + 7y = 2 from -2x + 7y = 10

Mathematically that would be;

(-2x+7y)-(3x+7y) = 10-2

-2x + 7y -3x -7y = 8

-2x -3x + 0 = 8

-5x = 8 or 5x = -8

julsineya [31]3 years ago
3 0

Answer:

  -5x = 8

Step-by-step explanation:

The result is shown here. The y-terms cancel.

  \begin{array}{rccc}& -2x+7y &= &10 \\-&(\ \,3x+7y &= &2)\\\cline{1-4}&-5x+0y&=&8 \end{array}

The simplified result is ...

  -5x = 8

You might be interested in
Question 22 Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 8 liters of natural oil for every
Setler [38]

Answer:

897 liters

Step-by-step explanation:

The motor oil is composed of 8 liters of natural oil and 5 liters of synthetic oil. This means there is a ratio of 8/5. We have 552 liters of natural oil to y liters of synthetic. This is the ratio 552/y. Create a proportion that compares the two ratios.

\frac{8}{5}=\frac{552}{y}

Solve by cross multiplying.

8y = 5(552)

8y = 2,760

y= 345

345 liters of synthetic oil.

Together 552+345= 897 liters of motor oil.

4 0
3 years ago
PLEASE HELP
max2010maxim [7]

Hello!


So, this is quite the complex question, and here are the following steps:


What is the quotient of \frac{6-3\sqrt[3]{6}}{\sqrt[3]{9}}?

\frac{(6 - 3\sqrt[3]{6})\sqrt[3]{9^{2}}}{9} (rationalize the denominator)

\frac{3(2 -\sqrt[3]{6})\sqrt[3]{9^{2}}}{9} (factor 3 from the expression)

\frac{(2-\sqrt[3]{6})\sqrt[3]{9^{2}}}{3} (reduce the fraction with 3)

\frac{2\sqrt[3]{9^{2}}-\sqrt[3]{9^{2}}}{3} (distributive property)

\frac{2\sqrt[3]{81}-\sqrt[3]{486}}{3} (simplify 3 · 9²)

\frac{6\sqrt[3]{3}-3\sqrt[3]{18}}{3} (simplify the radical)

\frac{3(2\sqrt[3]{3}-3\sqrt[3]{18})}{3} (factor 3 from the expression)

2\sqrt[3]{3}-\sqrt[3]{18} (reduce the fraction)


The answer, is simply, choice A, 2\sqrt[3]{3} -\sqrt[3]{18} ≈ 0.263758.

5 0
3 years ago
Can someone help me with 2-80 please
ycow [4]

Answer:

a. 60

b. -32

c. 3598

d. -6

Step-by-step explanation:

all you have to do is plug in the numbers that are given to you for the missing variables and then solve it regularly.

6×7+2×3

5×(-18)÷3-2

(6×10)^2-10÷5

(1-3)(1+2)

3 0
3 years ago
Mitchell took a math exam today. If he got 63 out of 84 questions correct, what percentage did Mitchell get wrong? (answer using
Mars2501 [29]

Answer:

75%


Step-by-step explanation:

If Mitchell took a math exam and got 63 out of 84 questions correct, that would turn into the fraction: 63/84

In order to convert this to a decimal, you divide 84 by 63 (since every fraction is a division problem), and get 0.75.

When you change decimals into percents, you move the decimal point two times to the right. So, that would be 75.

Then you add the percent symbol and you're done!

I hope that helped :)

7 0
2 years ago
Read 2 more answers
(6x² + x - 3)(2x² + 1)
Juli2301 [7.4K]
12x^4 +6 +2x^3 +1x -6x^2 -3

12x^4 +2x^3 -6x^2 +1x + 3

i'm not completely sure this is the right answer but i gave it a shot! let me know if i was right or wrong
6 0
3 years ago
Other questions:
  • If point C is between points A and B, then AC + __ = AB.
    5·2 answers
  • The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 44
    12·1 answer
  • A height of 12 and a volume of 1.356.48 what is the radius of the cylinder?
    12·1 answer
  • Find the equation of a line parallel to y=2x+1 that contains points (14, 3)
    9·1 answer
  • Karonlina flips a coin 60 times. how many times would you expect it's to land heads up?
    15·2 answers
  • Find the GCF of 35, 60, and 25
    15·1 answer
  • - Which values are equivalent to b in the equation below? 62 = 12 Select all that apply. A. -6 B. 6 C.-V12 D. 112 E. -144 F. 144
    5·1 answer
  • Hey can anyone help me with my math assignment its the last question on my profile thanks!​
    11·2 answers
  • HW HELP ASAPPP<br> +10PTS
    14·2 answers
  • $Need help with this pls (quickest answer gets brainliest)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!