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
Alona [7]
3 years ago
11

Please answer quickly in those 3 question if u know one of those answer than answer it if u don't than its fine

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
5 0
  1. 1x  +   1y = 12    ⇒ 14x + 14y = 168
    14x  + 10y = 140  ⇒ <u>14x + 10y = 140</u>
                                                 <u>4y</u> = <u>28</u>
                                                  4      4
                                                   y = 7
                                   14x + 10(7) = 140
                                       14x + 70 = 140
                                        <u>        -70    -70</u>
                                               <u>14x</u> = <u>70</u>
                                                14     14
                                                   x = 5
                                             (x, y) = (5, 7)
                    A. five adults and 7 children   

2. x + y = 4
    <u>x - y = -6</u>              
       <u>2x</u> = <u>-2</u>
        2      2
         x = -1
 -1 + y = 4
<u>+1        +1</u>
        y = 5
(x, y) = (-1,5)
C. (-1,5)

3.  x +        y = 178  ⇒ 0.1x +   0.1y = 17.8
0.1x + 0.25y = 29.8 ⇒<u> 0.1x + 0.25y = 29.8</u>
                                             <u> -0.15y</u> = <u>-12</u>
                                               -0.15    -0.15
                                                      y = 80
                                0.1x + 0.25(80) = 29.8
                                         0.1x + 20 = 29.8
                                         <u>          -20   -20    </u>
                                                <u>0.1x</u> = <u>9.8</u>
                                                 0.1     0.1
                                                     x = 98
                                               (x, y) = (98, 80)
                         D. 98 dimes and 80 quarters
inn [45]3 years ago
3 0
Lst question:  x = 5, y = 7

2nd question: x = -1, y = 5

3rd question: x = 98, y = 80
You might be interested in
Compare the functions.
marshall27 [118]

Function h has the largest y-intercept which is 44

Step-by-step explanation:

Any linear function is represented in the form

f(x) = mx+b

Here b is the y-intercept of the linear function i.e. the constant term in the function.

We will compare all the functions with the general form we get

y-intercept of f(x) = 1

y-intercept of g(x) = 8

y-intercept of h(x) = 44

y-intercept of j(x) = 0

Hence,

Function h has the largest y-intercept which is 44

Keywords: intercepts, linear functions

Learn more about intercepts at:

  • brainly.com/question/9532142
  • brainly.com/question/9590016

#LearnwithBrainly

5 0
3 years ago
How do we best help him learn his Multiplication table ….help for 3rd grade grandson
laiz [17]

Answer:

you can get flash cards and work with him everyday that's how I got mine

4 0
3 years ago
Explain why it works to break apart a number by place values to multiply
IrinaK [193]
Idononoooont know boi
3 0
3 years ago
Read 2 more answers
Find the surface of a cylinder with a base diameter of 4yd and a height of 6yd
yuradex [85]
Pi*radius squared= area of a circle
3.14*2^2=12.56yd^2

pi*diameter=circumference
3.14*4=12.56yd

area of surface around the cylinder=circumference*height
12.56*6=75.36yd^2

area of surface around the cylinder+ (area of circle*2)= surface area
75.36+(12.56*2)=100.48

the answer should by 100.48 yards squared

hope this helps
3 0
3 years ago
The value of the 2in 204.75 is how many times the value of the 2 in 103.52
laila [671]
I made it into an equation and took out all the other numbers so the equation would be 000.02x=200 and your trying to find x so you divide 200 by 000.02 equals 10000 and if you put it back in the equation 000.02(10000)=200 it comes out 200 so the answer is 10000
4 0
3 years ago
Read 2 more answers
Other questions:
  • The display on a calculator screen is shown below.
    9·1 answer
  • What is the smallest power of 10that would exceed 999999999991
    15·1 answer
  • Read the following statement. If it is Tuesday, then he will work after school. What is the inverse of this statement?
    10·1 answer
  • Which answer choice shows the number of hours in 51/2 days
    6·1 answer
  • How far did marcus racer travel after using five mushrooms?​
    7·1 answer
  • Please help me with this​
    7·1 answer
  • 4m=60,4m divided by 2 = 60 divided by 2
    11·1 answer
  • Multiplication is a faster way to do repeated
    6·2 answers
  • David is saving $250 to buy a bicycle. He saved $8 each week for 12 weeks. He wants to buy the bicycle in 7 more weeks. How much
    13·1 answer
  • Complete the sentence.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!