x+2y+1=0,2x-3y-12=0 solve by substitution method​

Answers

Answer 1

Answer:

Step-by-step explanation:

x=-1-2y

-2-4y-3y-12=0

-7y=14

y=-2

x=3


Related Questions

Plz help thank you alot

Answers

Answer:

A. 117.2 cubic feet

Step-by-step explanation:

Volume of the cone = ⅓πr²h

Where,

r = 4 ft

h = 7 ft

π = 3.14

Substitute

Volume = ⅓*3.14*4²*7

Volume = 117.226667 ≈ 117.2 cubic feet

1) Is this relation a function? WHY or WHY NOT?
X
-1
у
-8
5
9
-9
7
-8
-6
5
4

Answers

Answer:

yes its a function because the x side doesnt repeat itself

Step-by-step explanation:

Answer:

Yes.

Step-by-step explanation:

what is q(x)=9x2-24x+16

Answers

Answer:

1  1/ 3

Step-by-step explanation:

Triangle ABC is taken to triangle ABC by a dilation. Which of these scale factors for the dilation would result in an image that was larger than the original figure?

A)3/5
b)13/17
c)1
D)4/3​

Answers

Answer:

D

Step-by-step explanation:

you would see this as correct because it has a larger numerator than its denominator.

I think D but I'm not aure

Costas has an after school job. He budgets his money, allowing 0.31 of his earnings for food and 0.58 of his earnings for entertainment. The rest of the money he saves. If he earns $67.50 per week, which is the best estimate of the amount of money he saves each week ?

Answers

Answer: the amount of money he saves a week is $19.56

Step-by-step explanation: I am assuming that you mean percent so you subtract the percentages ($67.50 - 58%) - 31% This should give you a remaining amount of $19.56

A bag contains. 7 red, 8 blue, 2 green, 5 black, and 3 yellow marbles. A marbles will be drawn from the bag and replaced 175 times. what is the reasonable prediction for the number of times a yellow or green marble be drawn?
A. 35
B. 25
C. 5
D. 7

Answers

Answer:

A. 35

Step-by-step explanation:

The total number of marbles is 25

The number of green & yellow marble is 5

The probability of getting a yellow or green marble (if drawn once) = 5/25

So, if drawn 175 times, 5×175/25 = 35

Ashleys Shoe Store buys shoes for $35 and then sells them for
$85.
What is the percent of increase on the price of the shoes?
Round to the nearest whole number

Answers

Step-by-step explanation:

% Increase = ((New value - Old Value) / Old Value) * 100

Given New value = $85

and Old Value = $35

% Increase =

[tex] (\frac{85 - 35}{35} ) \times 100 \\ = ( \frac{50}{35} ) \times 100 \\ = 143percent(nearest \: whole \: number)[/tex]

What is the domain of the linear function below?

Y=6x+3

A. All negative numbers
B. All positive numbers
C. Integers only
D. All real numbers

Answers

D all real numbers.....

Number Machine #1
We've built a machine that follows these instructions:
Subtract 1
Multiply by 3
If we put 6 into this machine, what will come out?
Subtract 1
Multiply by 3
Submit
6

Answers

Answer:

6-1=5 times 3 =15

Step-by-step explanation:

Need help asap !!!! It also said round to the nearest tenth

Answers

Answer:

4524.9

Step-by-step explanation:

Area of a parallelogram:

A = bh

A = 63 x 90

A = 5670

Area of half-circle:

A = (πr²)/2

A = (π x 27²)/2

A = (π x 729)/2

A = 729/2π

Combined:

5670 - 729/2π

4524.9

Karen has a new job as a teacher's aide. Her annual salary is $26,210. What is her bi-weekly salary? Round your answer to the nearest cent.

Answers

Answer:

$1008.08

Step-by-step explanation:

biweekly is every 2 weeks

52/2 = 26

$26,210/26 = $1008.08

I need help with this pls

Answers

Answer:

Janet

Step-by-step explanation:

Because janet daily step count is 5000-9000And brends step count is7000-10000

Janat step count is 1000 greater than brenda.

Please mark me brainalist.

links will get banned

Answers

Answer:

True

Step-by-step explanation:

It's a square, so it'll have rotational symmetry.

[tex] \infty \infty [/tex]

the differences of 4 and a number x is 14

Answers

Answer:

x=18

Step-by-step explanation:

x-4=14

  +4  +4

x=18

i think it might be 10? :)

What is the slope of the line that passes through
the equation -6x - 4y = -5?

Answers

Step-by-step explanation

-6x-4y=-5
We have to get here —> y=mx+b ,so
-4y=6x-5
-y=6/4x-5/4
-y=3/2x-5/4
y=-3/2x+5/4

And the slope = -3/2

The DrJocker

given MN AC find the length of BN
a21
b18
c29
d27

Answers

Answer:

C

Step-by-step explanation:

15 - 9 = 6, So I then looked at each answer to see which had a difference of 6 and 35 - 29 = 6.

GOOD LUCK IN MATH!

Find the base of a parallelogram with a hight of 10.5 feet and an area of 189 square feet?

Answers

Base=18

Step-by-step explanation:

I have used area equals to base times height that's the formula of a parallelogram and I've gotten that base equals to 18 hope this helps.

HELPPPPPPPPPP!!!!!!!!!

Answers

Answer:

100 hours

Step-by-step explanation:

can i get brainlist

Answer:

100

Step-by-step explanation:

80-1800

90-1900

100-2000

5. (5 points) You have a jar full of jelly beans. You will randomly pick 2 jelly beans without replacement.The probability that you choose 2 green jelly beans is 14/95 and the probability of drawing one green jelly been is 2/5 . what is the probability of picking a second green, given the first was green?

Answers

Answer:

7/19

Step-by-step explanation:

In order to find the probability that two events happen in a sequence you simply have to multiply the probability of each individual event together. Since the probability of the sequence is given to us as well as the probability of drawing the first green jelly bean, this means we need to divide the first probability by the probability of the sequence to get the probability of the second event. Basically, reversing the process. Dividing two fractions, we simply divide the numerators by each other and then the denominators by one another.

[tex]\frac{14 / 2}{95 / 5} = \frac{7}{19}[/tex]

Therefore, the probability of picking the second green jelly bean is 7/19

99+72 = 9( ? +8) \
Pls help

Answers

It is 11. That is because 11 plus 8 equal 19, and 19 times nine is 171

how to solve 7x+(-3)=18​

Answers

Answer:

x=3

Step-by-step explanation:

7x(-3)=18

add 3 to both sides

7x=21

divide by 7 on both sides

x=3

Answer:

7x+(-3)=18

7x-3=18

7x-3+3=18+3

7x=18+3

7x=21

7x/7=21/7

x=21/7

x=3

9x -5y = 16
-3x + 7y = 16


-4x - 2y = 14
10x - 7y = 25

Answers

ihivigivivvivivuvicugugovos


7. A parabola has a maximum or minimum point called the
This is the point where the
curve changes direction. If the parabola opens up, the vertex is the
point. If it opens
down, it is the
point.
a) Axis of symmetry, minimum, maximum

b) Vertex, maximum, minimum

c) Axis of symmetry, maximum, minimum

d) Vertex, minimum, maximum

Please just type which letter ASAP, no links.

Answers

Answer:

D

Step-by-step explanation:

Which of the following points lies on the graph of y=x^2-5?

Answers

Answer:

(-2,-1)

Step-by-step explanation:

The point (-2, -1) lies on the graph of  y=x²-5

What is Graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

The given function is y=x²-5

A relation is a function if it has only one y-value for each x-value.

We have to find the points which lies on the graph of  y=x²-5

The graph is a parabola which has vertex of (0, -5)

Let us find few points of function

When x=-2, y=-1

When x=0, y=-5

when x=1, y=-4

when x=2, y=-1

when x=3, y=4

when x=4, y=11

when x=5, y=20

Hence, the point (-2, -1) lies on the graph of  y=x²-5

To learn more on Graph click:

https://brainly.com/question/17267403

#SPJ2

find the perimeter of the figure ​

Answers

Answer:

(19x+10)/2

Step-by-step explanation:

Perimeter of the figure is the sum of all the sides

Perimeter of the figure = 4x+3 + x+2+2x+2 + x/10 -1 + 2x/5 + 2x-1

Perimeter of the figure = 4x+x+2x+2x+x/10+2x/5 + 3 + 2 + 2 -1-1

Perimeter of the figure = 9x + (x+4x)/10 + 5

Perimeter of the figure = 9x + 5x/10 + 5

Perimeter of the figure = 9x + x/2 + 5

Perimeter of the figure = (18x+x)/2 + 5

Perimeter of the figure = 19x/2 + 5

Perimeter of the figure = (19x+10)/2

MATH DUE IN A BIT TYSMMMM!!!!!!!!!!!

Answers

Answer:

A i think sorry if I'm wrong

Step-by-step explanation:

1/2 x 2/3 should equal 3/4 so it can be b or d

Find the volume of a rectangular pyramid with the following dimensions.
length = 9 in ; width = 7 in ; height = 5 in
A 315
B 105
C 0157.5
D 472.5

Answers

Answer:

B

Step-by-step explanation:

like my answer please gimme the brain

Covert 50 °F to °C
°C = ( 50 -32)​

Answers

Answer:

50 Fahrenheit (F) 10 Celsius (C)

1 F = -17.222 C 1 C = 33.800 F

Answer:

50 Fahrenheit (F) 10 Celsius (C)

1 F = -17.222 C 1 C = 33.800 F

Christine has a bookcase with 21 books. There are 7 shelves in the bookcase. Each shelf has the same number of books. How many books does each shelf have?.​

Answers

Answer:

3 books

Step-by-step explanation:

You divide 21 by 7 to equally distribute the books on each shelf.

Jamal is a real estate agent who earns a 4.5% commission on her sales. If she sells a home worth $250,000, what is her commission?

A) $10,450
B) $11,250
C) $12,150
D) $12,850

Answers

Answer:

B 11,250

Step-by-step explanation:

Answer:

11,250

Step-by-step explanation:

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