Solve the system using substitution. -2x+5y=19
3x-4=y

Answers

Answer 1

Answer:

answer is x=3 and y=5.... so it is (3,5)

Step-by-step explanation:

you want to combine them so y=3x-4 so subsitute y

-2x+5(3x-4)=19

-2x+15x-20=19

            +20   +20

13x=39

---    ---

13     13

x=3

now subsitute 3 into x into any problem...

3(3)-4=y

9-4=y

and 9-4 is 5 so it is...

(3,5)

pls give me brainliest


Related Questions

1. SOCCER Suppose a youth soccer field has a
perimeter of 320 yards and its length measures 40
yards more than its width. Ms. Hughey asks her
players to determine the length and width of their
field. She gives them the following system of
equations to represent the situation. Use elimination to
solve the system to find the length and width of the
field.
2L + 2W=320
L - W = 40

Answers

Answer:

L = 100

W = 60

Step-by-step explanation:

2L + 2W = 320

-2L + 2W = -80

4W = 240

W = 60

L - W = 40

L - 60 = 40

L = 100

What Percent of 25 is 10 ?

Answers

Answer:

40

Step-by-step explanation:

Answer:

40% (see below)

Step-by-step explanation:

First, make a ratio to simplify your situation:

Think about it like this:

If 25 is 100%, and the question is asking me for 10, which is x%, then what is x%?

Here's what I'm talking about:

10               x%

------    =    --------

25            100%

Now, just cross multiply and simplify:

1000 = 25x

   40 = x

      x = 40

To check your answer, you can multiply 25 by 0.4 (the decimal form of 40%) to see if it worked because 40% of 25 is 10:

25 (0.4)

   10

what is
$1,000,000 x 1/3=

Answers

Answer:

333333.3

Step-by-step explanation:

The exact answer is

333333.333333

:)

can i please get some help asap

Answers

if my math is right it should be b

What is this? Someone please help me

Answers

Answer and Step-by-step explanation:

Haven't done this in a while, so here we go:

The rule (I'm not really sure) would have to be negative number and negative number.

This means that:

(4, 0) would become (-4, 0) A'

(6, -2) becomes (-6, 2) B'

(8, -7) becomes (-8, 7) C'

and (0, -5) becomes (0, 5) D'

#teamtrees #WAP (Water And Plant)


give your answer as mixed fraction and simplest from .​

Answers

Add the whole numbers.
Then add the numerators.

2 2/6 + 3 2/6 = 5 4/6

Simplify the fraction

5 2/3

what is the simplified form of √45
A) √5
B) √9•5
C) 3√5
D)5√3​

Answers

The simplified form is C .

Try the following puzzle:

A bat and ball cost $1.10.

The bat costs one dollar more than the ball.

How much does the ball cost?

Answers

Answer:

10 cents

Step-by-step explanation:

the bat cost 1 dollar so subtract 1 dollar from 1.10 and you are left with .10 or 10 cents

Answer:

the ball costs $0.05

Step-by-step explanation:

if the total is $1.10, and the bat is $1 more than the ball, you do

1+2x=1.10. do the algebra, and you get 0.05. hope this helps.

Greta has two pet lizards draco and lizzy for every 11 crickets Greta feeds draco she always feeds lizzy 8 crickets last week Greta fed draco 77 crickets

Answers

greta fed lizzy 56 crickets

Answer:

She feeds Lizzy 56 crickets when she feeds Draco 77.

Step-by-step explanation:

Lets put it as an equality:

[tex]\frac{11}{8}[/tex]  = [tex]\frac{77}{x}[/tex]

We want to solve for x. We can do so by finding how much larger the second fraction is than the first. In this case, 77 is 7 times larger than 11 (77/11=7), so we know that x must also be 7 times larger than 8 (because the fractions are proportional).

Since x is 7 times larger than 8, we can use 7 times 8 to find the value.

7 times 8 is 56

56 crickets for Lizzy!

Hope this helps and makes sense!

PLEASE HELP ASAP!!! i’ll mark brainlessly

Answers

1.5 km per hour

ngl i could be wrong :/

Which expression is equivalent to -6(3x-2/3)

Answers

Answer:

-18x + 4

Step-by-step explanation:

Suzanne finances $315,000 with a 15/4 balloon mortgage at 3.75%, How much will she pay for principal and interest over the life of the loan?

$358,189.67

$357,416.36

$355,775,49

S356,638.32

Answers

Answer:

Step-by-step explanation:

Given that :

Brianliest for correct answer

Answers

Answer: i Think it would be 80

Step-by-step explanation: a right triangle is 90 degrees so how I got 80 is 90-10=80 I might be wrong though

write an absolute value inequality for each graph explain pls?

Answers

Answer:

Step-by-step explanation:

(n) less than or equat to

the answer would be B, because it is

Solve each equation.


2x=52x=5

answer asap plz

Answers

Answer:

The correct answer for this problem is 55

If f (x) = 4x-3, what is f (x)"?

Answers

Answer:

4x-3

Step-by-step explanation:

F(x) is a function group. In this scenario, f(x) = 4x-3 where x is equal to x.

Will give 15 point
Easy math please explain your work

Answers

Answer:

Answer is 154

Step-by-step explanation:

PLEASE HELP!!!!!!!!!!

Answers

Answer:

3

Step-by-step explanation:

The speed limit on a highway is 70 miles per hour. About how fast is this in miles per minute
PLEASE SOON!!

Answers

Answer:

In the case of 70 mph, time would be 105/70 or 1.5 hours (90 minutes).

Joey is building a doghouse. He measures the lengths of two sides and the hypotenuse to make sure the boards create a right triangle. Which of the measurements below could be used to create the right triangle?

Answers

Answer:

hv iub;k

Step-by-step explanation:

hg bjlh lj

Daniel works for 3 hours one day he gets paid $6 an hour.​

Answers

he’d get $18 dollars for working 3 hours

Which of the following rational functions is graphed below?

Answers

Answer:

d

Step-by-step explanation:

trust me

8t=−32

Help a sister out

Answers

Answer:

t=-4

Step-by-step explanation:

Answer:

t = -4

Step-by-step explanation:

divide each term by 8 and simplify

1 1 point
Answer each of the following. Write your final answers in the blanks provided.
A building is 50 ft. high. At a distance away from the building, an architect observes that the angle of elevation to the top of the building is
28° How far is the observer from the base of the building? Round to the nearest foot.

Answers

Answer:

58

Step-by-step explanation:

57.5 round up. 58

s=ut+ 1/2 at²
u=10 a= -2 t= 1/2
work out the value of s

Answers

s=(10)(1/2)+(1/2)(-2)(1/2)^2
s=5+(-1)(1/4)
s=5-(1/4)
s=4 and 3/4 or 19/4

Mr. Sampson wants to ship a birthday gift to his son in the navy. To meet shipping requirements at the Local U
Pack It We Ship it Store, the perimeter of the rectangular-shaped gift box must be less than 30 inches. Write
and graph an inequality to describe this situation.

X= length
Y= width

Answers

Answer:

Step-by-step explanation:

If length of the box = x

And width of the box = y

Then perimeter of the box = 2(length + width)

                                            = 2(x + y)

Since, perimeter of the box is less than 30 inches.

2(x + y) < 30

x + y < 15

y < -x + 15

Since, this inequality has a sign of less than, line on the graph will be a dotted line.

y intercept of the dotted line y = 15 (by x = 0)

x intercept of the line x = 15 (by y = 0)

Constraints for the graph will be,

x > 0

y > 0

Now we can plot the dotted line by joining the x and y intercepts.

In this graph common region under the dotted line between x axis and y axis will be the solution area of the given inequality.

a cupcake recipe calls for 4 cups of flour into cups of sugar. Angelica only has three cups of flour. How much sugar would she need to keep the ratio equivalent if she uses all the flowers she has?​

Answers

Answer:

she would need like 2cups of sugar

1. The number of triangles to the total number of shapes​

Answers

Answer:

count the number of triangles and then the total number of shapes so if there are 7 triangles and 21 shapes total the answer would be 7-21

Step-by-step explanation:

The ratio of the triangles to the total number of shapes will be 4/9. Then the correct option is D.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The total number of shapes is 9. And the number of triangles is 4.

Then the ratio of the triangles to the total number of shapes will be given as,

Ratio = 4 / 9

The ratio of the triangles to the total number of shapes will be 4/9. Then the correct option is D.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

#SPJ5

The complete question is attached below.

PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.

Answers

Answer:gay

Step-by-step explanation:

Answer:

k=4.5

Step-by-step explanation:

if you multiply 4.5 by x your result will be y

ex: 4x4.5=18

4=x and 18=y

Please help me with this equation, you are supposed to find x

Answers

Answer:

I believe its 2/3

Step-by-step explanation:

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