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
Natali [406]
3 years ago
11

Solve by elimination method 

Mathematics
1 answer:
Natalka [10]3 years ago
5 0

Answer:

(1, -2)

Step-by-step explanation:

hope this helps :)

You might be interested in
Water is added or drained from a tank each day. The first day, 910 of a gallon is added to the empty tank. The second day, 710 o
dimulka [17.4K]

Answer:

The quantity of water in the tank after 15 days is 1610.0 gallons OR 1.61 × 10³ gallons.

Step-by-step explanation:

The amount of water in the tank after 15 days is given by the series

910+(−710)+810+(−610)+⋯+310+(−110)+210

From the series, we can observe that, if water is added for a particular day then water will be drained the following day.

Also, for a day when water is to be added, the quantity to be added will be 100 gallon lesser than the quantity that was last added. Likewise, for a day when water is to be drained, the quantity to be drained will be 100 gallons lesser than the quantity that was last drained.

Hence, we can complete the series thus:

910+(−710)+810+(−610)+710(-510)+610(-410)+510(-310)+410(-210)+310+(−110)+210

To evaluate this, we  get

910-710+810-610+710-510+610-410+510-310+410-210+310-110+210

= 1610.0 gallons

Hence, the quantity of water in the tank after 15 days is 1610 gallons OR 1.61 × 10³ gallons.

8 0
3 years ago
Complete the equation of the line through (1,4)(1,4)left parenthesis, 1, comma, 4, right parenthesis and (2,2)(2,2)left parenthe
Ivahew [28]

Answer:

y = -2x + 6

Step-by-step explanation:

Given

(x_1,y_1) = (1,4)

(x_2,y_2) = (2,2)

Required

Determine the line equation

First, we calculate the slope (m) using

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{2-4}{2-1}\\

m = \frac{-2}{1}

m = -2

The equation is then calculated using:

y - y_1 = m(x - x_1)

y - 4 = -2(x - 1)

Open bracket

y - 4 = -2x + 2

y = -2x + 2 + 4

y = -2x + 6

5 0
3 years ago
Read 2 more answers
Solve the inequality and write the solution in interval notation:<br> k/-12 ≤ 15.
natali 33 [55]
Remember when solving inequalities the sign of your inequality reverses when dividing or multiplying negative values. k/-12<15. k>-180 [-180, positive infinity)
5 0
3 years ago
Given: ΔABC; b= 10; c = 14, and ∠A = 54°. Find the length of side a to the nearest whole number.
algol13
We can solve for the length of side a to the nearest whole number using the Laws of Cosines such as the formula is shown below:
a²=b²+c²-2bcCosA
Solving for the value of a, we have:
a²=10²+14²-2(10)(14)cos54°
a²=131.42
a=11.46
The answer is 11.46 or 11.5.
8 0
3 years ago
Donna, Neil, and Frank are siblings. Donna is the oldest. Frank’s age is 1/4 of Donna’s age. Right in equation to represent Fran
shusha [124]
D of 1/4 = F
    OR
D x 1/4= F
8 0
3 years ago
Other questions:
  • Write the equivalent expression for 6x + 5y + 7x
    13·2 answers
  • Look at the screenshot-- help?
    10·1 answer
  • Can I please get some help with both problems
    7·1 answer
  • What is this lol idk im not sure
    5·1 answer
  • What is the equation of a line that is perpendicular to y = 3x -2 and passes
    5·1 answer
  • Solve for x if 5 - x = 6<br><br> A) 1<br> B) No solution <br> C) -1<br> D) 5
    10·2 answers
  • Find the value of the following 1.8456×101​
    12·2 answers
  • which of the following statements is true? a. the radius of a circle is twice its diameter b. to find the diameter of a circle,
    8·2 answers
  • Write the algebraic expression for ‘x plus five is twenty three’
    5·1 answer
  • Help me do this please
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!