What is 13x+4y=487 + -12x-4y=-464 pls show your work

Answers

Answer 1
13x+4y=487 ------ (1)
6x+2y=232 ------ (2)
Multiply equation 2 by two,
12x+4y=464 ----- (3)
Minus equation 1 by equation 3,
x = 23
Now solve for y,
6(23) + 2y = 232
138 + 2y = 232
2y = 94
y = 47

Hope this helped ;).

Related Questions

Plz, Help me with this question!

Plz, Help me with this question!

Answers

Answer:

Ben franklin

Step-by-step explanation:

Answer:

Ben Franklin

Step-by-step explanation:

calcule o valor x na equação do 1° grau: 2x-42=64​

Answers

Answer:

2x-42=64

Step-by-step explanation:

help whoever solves correctly ill give brainly

Answers

Step-by-step explanation:

1. GFE = right angle = 90°

x + 20 = 90

x = 90 - 20

= 70

2. x + 36 = 90

x = 90-36

= 54

Please help I’ll name brainliest

Answers

Answer:

mark R as a 6

Step-by-step explanation:

Geometry boy yo please help

Answers

Answer:

x=12

Step-by-step explanation:

ab=dc so 15=x+3 you subtract 3 from both sides... x=12

What generalization can you make about the equations?Use the drop-down menus to complete the explanation

Answers

Answer:

They have the same end results

Step-by-step explanation:

Given

The missing equations are:

[tex]7 / \frac{1}{4} =[/tex]

[tex]7 * 4 =[/tex]

Required

Make a generalization about the equations

First, we solve both equations.

(1)

[tex]7 / \frac{1}{4} =[/tex]

[tex]7 / \frac{1}{4} = 7 * 4[/tex]

[tex]7 / \frac{1}{4} = 28[/tex]

(2)

[tex]7 * 4 =[/tex]

[tex]7 * 4 = 28[/tex]

From the solutions to the above equations, we can see that both equations have the same end result;

i.e.

[tex]7 / \frac{1}{4} = 7 * 4 = 28[/tex]

Hence;

A generalization can be: "they have the same end results"

How to round 16.15549 to the nearest tenth?

Answers

Answer:

16.2

Step-by-step explanation:

Answer

16....... my bad it's 16.2 I miscalculated

Step-by-step explanation:

To round a number to the nearest tenth , look at the next place value to the right If it's 4 or less, just remove all the digits to the right. If it's 5 or greater, add 1 to the digit in the tenths place, and then remove all the digits to the right.

Consider the equation 5 + x = n
What must be true about any value of x is the n is a negative number?
Explain your answer.
Provide an example that would satisfy this condition.
Explain how you know your equation is correct.
(Can someone plz help)!!!

Answers

All of the answers will be less than five. for example if x=-3 n=2 which is less than 5

If there is a boy to girl ratio of 3:4, how many girls are there if there
are 18 boys? Complete the table to determine the answer.
Boys
Girls

Answers

Answer:

24 Girls

Step-by-step explanation:

3/4 = 18/x

3*x = 18*4

3x=72

3x/3=72/3

x=24

24 girls.
Because the ratio of boys to girls is 3:4, for every 3 boys there are 4 girls. 3 goes into 18 6 times and because the number of boys has increased by 6x, all we need to do is multiply 4 by 6 which is 25

You made a profit of $65,000. You would like to invest the $65,000 into an account that pays you an annual compounded interest rate of 5.5%. You want to make annual withdrawals over the next 10 years such that by the end of this 10 year period, the amount remaining in the account will be zero dollars. Determine, from the given information, the amount of the annual withdrawals. please Round your answer to the nearest cent.

Answers

Answer:

 

d.   $8,623.40

Step-by-step explanation:

EDGE 2021

When Tyson opens and lays a cereal box out flat, he sees that the top and bottom of the box each measure 3 inches by 9 inches, the sides of the box each measure 3 inches by 13 inches, and the front and back of the box each measure 9 inches by 13 inches.

Please Answer with the work please.

Answers

Answer:

i

Step-by-step explanation:

21x+9 =
Help please

Answers

Answer:

3

Step-by-step explanation:

cross multiply

A large square is divided into 4 smaller squares; then small left square is
divided into 4 smaller squares as well. What fraction of the large square is
shaded?

OPTIONS

4 over 5
3 over 8
4 over 9
1 over 3
1 over 2​

Answers

Answer:

The total fraction shaded is 1/2

Step-by-step explanation:

Here, we want to know the fraction shaded

As we can see, the box is originally divided into 4

So each of the 4 parts are 1/4

for the first part, we have 4 divisions;

This means each of the divisions with respect to the whole fraction will be 1/4/4 = 1/16

Now, two of these are shaded, making 1/16 and 1/16

Secondly, we have half of the 1/4 : So with respect to the whole, we have 1/4/2 = 1/8

for the third part, the whole 1/4 is shaded

and lastly, we have an unshaded 1/4

so, the total fraction shaded will be ;

1/16 + 1/16 + 1/4 + 1/8

= (1 + 1 + 4 + 2)/16 = 8/16 = 1/2

Use the Distributive Property to find the product 3/4 • 2 1/3

Answers

3/4 • 7/3 = 21/12 = 1 9/12 = 1 3/4

179+892
Estimate

Round each number to the nearest hundred

Answers

Answer:

1100

Step-by-step explanation:

179+892 is 1071. However we will round up since 1071 is closer to 1100 compared to 1000. Hope this helps!

evaluate the expression: 3^3 + 3(4 + 1/3)

Answers

Your answer: 3^3 + 3(4 + 1/3) = 40

Answer: 130

Step-by-step explanation: I first did 4+1/3 which is 4 1/3 and then I did 3^3 which is 27 then I added 3 to 27 and I multiplied 27 and 4 1/3 and got 130.

Suzy makes 20 dollars an hour at her job. Bill only makes 10 dollars an hour but he has a starting bonus of 20. When will Suzy and Bill make the same amount of money for the same number of hours worked? How much will they both earn at the same time?

Answers

Answer:

2 hours

Suzy would earn $40

Bill will earn $40

they will both earn $80

Step-by-step explanation:

The total amount suzy earns is a function of the total hours worked. Let t represent time

total income of suzy = $20t eqn 1

Bill's income = starting bonus + variable pay

= $20 + $10t

We are looking for when they would earn the same amount :

20t = $20 + $10t  eqn 2

collect like terms and solve for t

10t = $20

t = 2 hours

Substitute for t in either eqn 1 or 2

20(2) = $40

Suzy would earn $40

Bill will earn $40

they will both earn $80

8= -9 + u

solve for u

Answers

Answer:

The answer is 17

Step-by-step explanation:

First, add 9 to 8

17 = u

Answer:

u=17

Step-by-step explanation:

8=-9+u

-u=-9-8

-u=-17

u=-17

can someone please answer some of my questions on my page? im being stalked by a bot who wont give me and answer and keeps putting a link, but i want a trustful answer. (i will mark brainliest on any questions you answer if you do)

Answers

Answer:

Trust me

Step-by-step explanation:

Answer:

ikr they put this cuttly.com /... thing in it right

Step-by-step explanation:

(8x) 2/3 radical form

Answers

16 3 x the took a quiz

If you had a cube with a side length of 4, how can your write the calculations in exponential form?

Answers

4^3

you can write it like 4 × 4 × 4

you can also call it "Four to the Third power".

when a graph line is vertical, it indicates that the relation is?

Answers

Answer:

When a vertical line is placed across the plot of this relation, it intersects the graph more than once for some values of x. If a graph shows two or more intersections with a vertical line, then an input (x-coordinate) can have more than one output (y-coordinate), and y is not a function of x.

Step-by-step explanation:

what is the area of the lawn in sqaure meters

Answers

Answer:

60 m

Step-by-step explanation:

Trapezoid area formula:

[tex]A=\frac{a+b}{2} h\\\\A=\frac{18+12}{2} 4\\\\\frac{30}{2} *4\\\\15*4\\60[/tex]

what is the common difference 5,3,1,-1​

Answers

Answer:

t2-t1= 3-5 = -2

answer= -2

A pack of gum is in the shape of a rectangular prism with a length of 5 centimeters and width of 2 centimeters. The volume of the gum is 60 cubic centimeters. What is the height of the pack of gum? The height of the pack of gum is cm.​

Answers

The height is 6cm
Volume= length x width x height
60=5x2xH
60/(5x2)=H
6=H

Help pls! (4c+4)(2c-3)

Answers

Answer:

8c2 - 4c - 12

Step-by-step explanation:

Answer:

8c^2-4c-12

Step-by-step explanation

So you have to multiply 4c into 2c and -3 first and then 4 into 2c and -3.

(4c+4)(2c-3)

4c X 2c is 8c^2

(4c+4)(2c-3)

4c X -3 is -12c

So for the 4c multiplying in you would get 8c^2 and -12c, but we still have to multiply in the 4

4 X 2c is 8c

(4c+4)(2c-3)

4 X -3 is -12

So then we would get 8c^2-12c+8c-12, however we can still combine the -12c and the 8c.  Combining those would get -4c.  So the final answer is 8c^2-4c-12

A train accelerates at 2.2 m/s^2. With an initial velocity of 22 m/s, what will be the velocity of the train after 19 s

Answers

[tex]a=2.2[\frac{m}{s^2}]\\v_0=22[\frac{m}{s}]\\t=19[s]\\\\a = \frac{\Delta v}{t}\\\Delta v=at=41.8[\frac{m}{s}]\\v = v_0+\Delta v=63.8[\frac{m}{s}][/tex]

Answer: The velocity will be 63.8 m/s.

Use the Distributive Property to simplify the expression.
9(3+c+ 4) =

Answers

Answer:

9c4+27 is what I got from solving

Answer:

9(7+c)

I hope it's correct sorry if I'm wrong :(

WILL GIVE BRAINLIEST!!! PLS HELP!!!

Answers

Answer:

sorry guys real sorry i dont know it zoom it more

Step-by-step explanation:

Question 10 options:
A marine biologist is researching the population density of dolphins. The marine biologist counts 175 dolphins within a radius of 2.5 miles of a half-circle off of Clearwater Beach.

What is the population density of the dolphins?

Use 3.14 for pi, and round to the nearest whole number.

Answers

Answer:

Density = 9 dolphins / mi^2 This is the result.

Step-by-step explanation:

Number of dolphins = 175

Radius = 2.5 mi

1. - Calculate the area

Area = pi* r^2

Area = 3.14*2.5^2

Area = 3.14*6.25

Area = 19.625 mi^2

2. - Calculate the density

density = dolphins/mi^2

- Substitution

density = 175 / 19.625

Result

density = 8.9 dolphins/mi^2

Rounding to the nearest whole number

Density = 9 dolphins / mi^2

Answer:

Area of half circle = 1/2 x π x r^2

= 1/2 x 3.14 x 2.5^2

= 9.8125 miles²

For the density divide the number of dolphins by the area:

Density =population/area= 175/9.8125 = 17.83 dolphins/mile²

the population density of the dolphins is 18dolphin/miles²

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