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
meriva
3 years ago
9

Solve by elimination. 2x + 8y = 60 5x + 4y = –10

Mathematics
1 answer:
puteri [66]3 years ago
8 0

Answer:

2x + 8y = 60= 30

5x + 4y = –10= -2

Step-by-step explanation:

Simplifying

2x + -8y = 60

Solving

2x + -8y = 60

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8y' to each side of the equation.

2x + -8y + 8y = 60 + 8y

Combine like terms: -8y + 8y = 0

2x + 0 = 60 + 8y

2x = 60 + 8y

Divide each side by '2'.

x = 30 + 4y

Simplifying

x = 30 + 4y

You might be interested in
Help pls ..........!!!!!!!!!!!!!!
cricket20 [7]

Answer:

x(3 + 4)

4(3x + 1)

Step-by-step explanation:

3x + 4x

The common factor is x, so factor out the x.

3x + 4x = x(3 + 4)

12m + 4

The common factor is 4, so factor out the 4.

12m + 4 = 4(3x + 1)

3 0
3 years ago
A store sells bread and milk. On Tuesday, 3 loaves of bread and 2 litres of milk were sold for €6.25. On Thursday
poizon [28]

Answer:

A store sells bread and milk. On Tuesday, 3 loaves of bread and 2 litres of milk were sold for €6.25. On Thursday  4 loaves of bread and 5 litres of milk were sold for €10.90. If b = the price of a loaf of bread and m = the price of

one litre of milk, Tuesday's sales can be written as 3b+2m=6.25.

Part A Using simplest terms, write an equation in band m for Thursday's sales.  

PartB calculate the values of b and m

3b + 2m= 6.25  >> Tuesday equation 1

4b +  5m = 10.90 >> Thursday equation 2

Subtract equation 1 and 2

3b+2m-6.25-4b+5m-10.90= 0

b+7m-4.65= 0

b+7m= 4.65+0

b+7m= 4.65

b= 4.65 - 7m

if b= 4.65-7m

then substitute b in b+7m=4.65

4.65-7m+7m= 4.65

4.65-m= 4.65

4.65-4.65= m

m= 0

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help meh I will give brainiest!! Answer as much as you know.
coldgirl [10]

Here i did this to. Hope it helps! It wont let me download it so I am just gonna put them on here.

Unit 7 Review Guided Notes Page

Question 1

Find the missing side length.

5*5=25+ 7*7=49= 74 so 8.6

Question 2

What is the area of the parallelogram?

18*50=900

Question 3

What is the perimeter of the figure?

If you break the object apart. 7+7+1+1=16

5+5+3+3=16

16+16=32m

Question 4

What are the solutions to the equation?

x^2 – 22 = 14

I found that 6*6=36 – 22=14

I tried a few numbers .

Question 5

What is the area of the figure?

If you break the figure apart. 3*2=6

2*6=12

6+12=18cm

Question 6

What is the area of the trapezoid?

11+3=14*9=126*2=252

Question 7

Hint: 1 Revolution equals the Circumference!

How far does a wheel travel in 2 revolutions if it has a radius of 45 cm?

2*3.14=6.28*45=282.6*2=565.2

Question 8

The diameter of the larger circle is 11 cm.  The diameter of the smaller circle is 7 cm.  What is the area approximate area of the shaded region?

For the smaller one – 7/2= 3.5 *3.5*3.14=38.46

For the bigger one- 5.5*5.5*3.14=94.98

94.98-38.46=56.52

Question 9

What is the approximate area of a circular garden that has a diameter of 12 feet?

A= Pi*r2. 3.14*6^2 =113

6*6=36*3.14= 113.04

Question 10

A 17-foot pole is leaning against a wall.  The bottom of the pole is 8 feet away from the bottom of the wall.  Approximately how high up the wall does the top of the pole reach?

(a^2+b^2=c^2) Its 15 ft

4 0
3 years ago
Solve the following expression when<br> m = 5 and d = 4<br> m2 + 2d + 8 + d
docker41 [41]
M2 + 2d + 8 + d

5(2) + 2(4) + 8 + 4

10 + 8 + 8 + 4

10 + 16 + 4

26 + 4

30
8 0
3 years ago
An egg is dropped from a height of 90 ft. If acceleration due to gravity is –16 ft/s2 and initial velocity is 0 ft/s, approximat
stira [4]
2.4 s B ( i hope this help)
6 0
4 years ago
Read 2 more answers
Other questions:
  • Draw the translation of LM along the vector (4, -5)
    15·1 answer
  • What is one gram in Kilograms?????​
    14·2 answers
  • Find the volume of the figure.
    15·1 answer
  • Number name for 43,080,700
    8·1 answer
  • Which student correctly translated the phrase "twice the sum of a number cubed and nine" and evaluated it for r = 3?
    10·2 answers
  • I need help with this please asap<br>the whole page.​
    7·1 answer
  • Find all the missing measurement​
    11·1 answer
  • Find the measure of the line segment indicated. Assume that lines which appear tangent are tangent.
    5·1 answer
  • Taylor’s gymnastics team is selling 5 raffle tickets for $8.00 What is the constant of proportionality of dollars per ticket? (o
    5·1 answer
  • The points N, O, P and Q all lie on the same line segment
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!