1. Solve the system of equations: 2x + y = -2
5x + 3y = -8

Answers

Answer 1

Answer: x=2 and y=−6

Step-by-step explanation: 2x+y=−2, 5x+3y=−8

2x+y=−2

2x+y+−2x=−2+−2x

y=−2x−2

5x+3y=−8

5x+3(−2x−2)=−8

−x−6+6=−8+6

−x=−2

−x /−1 = −2 /−1

x=2

y=−2x−2

y=(−2)(2)−2

y=−6

x=2 and y=−6


Related Questions

Which expression is equivalent to 5/6c + 76c, if c+ 0?

Answers

Answer:

0

Step-by-step explanation:

If c=0

that expression also equals 0

Which expression can you use to find the area of the rectangle?

Answers

Answer:

The formula for area of a rectangle is: A = L * W where L is the length and W is the width. where S is the length of one side.

The expression A=LW is used to find the area of the rectangle.

We have to determine

The expression can you use to find the area of the rectangle.

What is the formula for the area of a triangle?

The formula for the area of a rectangle is: A = L * W

where L is the length and W is the width.

where S is the length of one side.

Therefore the expression A=LW use to find the area of the rectangle.

To learn more about the area of the rectangle visit:

https://brainly.com/question/25292087

Please help I don’t understand

Answers

Answer:

Line m and n are parallel lines that are intersected by a line

This means that corresponding angles in each line are equal to each other

This means that angle (3x+58) is equal to (5x)

now, we can solve for x and from there find the angle measure

(3x+58)=5x

3x-3x+58=5x-3x

58=2x

58/2=2x/2

29=x

if 29=x then 5(29)=5x

the angle measure of these angles is 145

Step-by-step explanation:

Answer:

Step-by-step explanation:

m // n  and they are intersected by transversal.

Corresponding angles are equal

5x = 3x + 58

5x - 3x = 58

     2x = 58

      x = 58/2

x = 29

Gravitational potential energy and kinetic energy make up what type of energy?

A. mechanical
B. chemical
C. electrical
D. sound

Answers

Answer:

A

Step-by-step explanation:

i hope this is right

I really need help .. please help .. the question is in the picture

Answers

Answer:

C

Step-by-step explanation:

points are on (0,-3) and (6,0)

so

y = 1/2x - 3

please help me if you can, thank you so much

Answers

D)

The slope (number with x variable) is negative because the line points down.

The y intercept is currently at 1.. if shifted up 2 units it would be at 3

Some people took part in a game. The frequency shows information about their scores.
Score Frequency
1-7 20
8-10 13
11-15 13
16-20 10
21-35 16
36 - 50 19
Estimate the mean.
Give your answer rounded to 2 decimal places.​

Answers

80
117
169
180
448
817
=
1811 / 91

19.901 and that rounded to 2 decimal places is 19.9

What is the perimeter of a square with a side length of 2x?
Please help :)

Answers

Answer:

8x

Step-by-step explanation:

perimeter is sum of all sides

square has 4 equal sides

each side measures '2x'

2x + 2x + 2x + 2x = 8x   or   4(2x) = 8x

1/2x2000
Number 2 question

Answers

1/2 which is equal to 0.5 x 2,000 is 1,000

Answer: 1000

Step-by-step explanation: 1/2x2000 = 1000

Plsss i really need help.​

Answers

Answer:

im not sure but i think its correct (like 80-90%)(but probably not but u can use this method to find the correct answer)

Step-by-step explanation:

a) 25+40= 65 (x) 10= 650/2= 325

b) 325 (x) 50= 16,250cm

c) 325 (x) 2= 650

20 (x) 50= 1000

50 (x) 40= 2000

15 (x) 50= 750

25 (x) 50= 1250

then, just add eveything above should be 5,650cm^2

Pls help and show working due ASAP
Please

Answers

Answer:

Option B

Step-by-step explanation:

In a triangle , sum of measure of any 2 sides is always greater than the measure of the third side. So

[tex]5 + 12 > k[/tex]

[tex] = > 17 > k[/tex]

Hence the measure of k is less than 17.

In the triangle , measure of the longest side is 12 cm. As we know that sum of measure of any 2 sides of triangle is greater than the measure of third side , the value of k should be more than 7cm because if the value of k would be 7 , then 5 + 7 = 12 and the sum will get equal to the measure of longest side , hence such triangle wont exist.

Atlast , the range of k is :-

[tex]7 < k < 17[/tex]

Find the area of the above parallelogram

Answers

Answer:

30 units²

Step-by-step explanation:

The area (A) of a parallelogram is calculated as

A = bh ( b is the base and h the perpendicular height )

Here

b is the horizontal measure between 2 red points, that is 6

h is the vertical measure from the lower left point to the other horizontal line, that is 5, then

A = 6 × 5 = 30 units²

A group of friends wants to go to the amusement park. They have no more than $175
to spend on parking and admission. Parking is $12.50, and tickets cost $16.25 per
person, including tax. Write and solve an inequality which can be used to determine
2, the number of people who can go to the amusement park.

Answers

Answer: 10 people can/ 12.50+16.25x is less than or equal to 175

Step-by-step explanation: so parking is constant since it doesn't change. ticket price however is affected by a variable which represents ticket per person which is shown as 12.50(parking)+16.25x where x would equal the max amount of people while respecting the given 175 limit we cannot go over

Answer:

"Can you add the equation?"

That's exactly what I'm asking, I asked a question that's very similar to this one, but nobody seems to know an equation that can be created :(

Step-by-step explanation:

If I solve the problem and create an equation, I'll let you know

I got you.

Inequaility : 12.50 + 16.25x ≤ 174

I think it's gonna be

x ≤ 10

what is the y-intercept and x-intercept of f(x) =400-45x

Answers

Answer:

y-intercept=400 x intercept=8

Step-by-step explanation:

The Maximus Electric Company will increase employee's yearly wages by 2.5% next year. An employee whose
yearly wages this year total $45,000 will earn what total yearly wages next year

Answers

Answer:

46,125

Step-by-step explanation:

2.5% = .025

45,000 * .025 = 1,125

45,000 + 1,125 = 46,125

If he divides his land into square fields that are 1/2 mile long and 1/2 mile wide , how many fields will he have??

Answers

Answer:

that would be 1

Step-by-step explanation:

i divided the 2 fractions and got 1

What would the UNIT RATE be for 90 miles in 5 hours be

Answers

Answer:

90/5 = 18 mph

Factor out the coefficient of the variable -3.6m + 10.8

Answers

Answer: -1

Step-by-step explanation: First, factor out 3.6. You should get -m+3. Since the coefficient is just the number being multiplied to the variable (which is m here), your coefficient should be -1 because m is being multiplied to -1 to make -m. Hope this helps!

help plz i’ll give extra points <3

Answers

Answer: the sprinter’s speed in meters per second

Explanation: The slope is the change in y (distance in meters) over the change in x (time in seconds), so it represents speed in meters per second.

Pleaseeeee hellpppp :(

Answers

Answer:

1

Step-by-step explanation:

To find the solutions (or, in other words, zeroes) of a quadratic function/equation we use the discriminant (the part that's inside the square root of the quadratic formula, [tex]b^2-4ac[/tex].)

If the discriminant is smaller than 0, there are no zeroes

If the discriminant is equal to 0, there is one zero

If the discriminant is larger than 0, it has two zeroes

The discriminant is commonly denoted as [tex]\Delta[/tex].

At Pizza Pi, 55% of the pizzas made last week had extra cheese. If 11 pizzas had extra cheese, how many
pizzas in all were made last week?

Answers

It would be 45% I think

Please help me out here! Precalc :))

Answers

Domain are the x values where the line starts and stops.

A bracket is used for a solid circle and a parentheses is used for open circles

The answer would be the second choice: (1,2)

help!!!!!!!!!!!!! I really need help!!!!!!!!!!!!!!!

Answers

Answer:

5/9 or 0.5555 repeating [tex]m^{2}[/tex]

Step-by-step explanation:

(5/6 x 2/3)

Andre’s math teacher has 24 kids in the class. How many different ways can he arrange groups for an activity?

Answers

Answer:

divide by 5

Step-by-step explanation:

list the factors of 5 to get 24 like 5x4=24

It cost Eva $7.80 to send 60 text messages. How much does each text cost to send?

Answers

It cost 0.13 for a text. 7.8/60=0.13

Jacks father drives to work in 30 minutes while driivng at his usual speed. When traffic is bad, he drives 30 miles per hour slower and the trip takes one hour longer. How far is Jack's father's work from home

Answers

Answer:

The distance of Jack's father's work from home is 22.5 miles.

Step-by-step explanation:

Given;

time it takes Jacks father at usual speed, t = 30 minutes = 0.5 hour

Jacks father speed when traffic is bad, = 30 mph slower

let the usual speed = v

let the distance of Jack's father's work from home = y

When traffic is normal;

[tex]v = \frac{y}{0.5 } ---- equation \ (1)[/tex]

When traffic is bad;

[tex]v - 30 \ mph = \frac{y}{1 \ + \ 0.5} \\\\v -30 = \frac{y}{1.5} \\\\v= 30 +\frac{y}{1.5} ----equation \ (2)[/tex]

Solve equation (1) and (2) together;

[tex]\frac{y}{0.5} = 30 \ + \ \frac{y}{1.5} \\\\y = 0.5(30 \ + \ \frac{y}{1.5})\\\\y = 15 + \frac{y}{3} \\\\y - \frac{y}{3} = 15\\\\\frac{3y-y}{3} =15\\\\\frac{2y}{3} =15\\\\2y = 3(15)\\\\2y = 45\\\\y = \frac{45}{2} \\\\y = 22.5 \ miles[/tex]

Therefore, the distance of Jack's father's work from home is 22.5 miles.

The required distance of Jack's father's work from home is y = 22.5miles.

Given that,

Jacks father drives to work in 30 minutes while driving at his usual speed.

When traffic is bad, he drives 30 miles per hour slower and the trip takes one hour longer.

We have to determine,

How far is Jack's father's work from home.

According to the question,

Let, the usual speed = v

And the distance of Jack's father's work from home = y

Jacks father at usual speed taking time, t = 30 minutes = 0.5 hour,

Jacks father speed when traffic is bad, = 30 mph slower.

The formula for speed is defined as = distance ÷ time.

Therefore,

Jacks father drives to work in 30 minutes while driving at his usual speed.

[tex]Speed = \dfrac{distance}{time}\\\\v = \dfrac{y}{0.5}[/tex]

Then,

When traffic is bad, he drives 30 miles per hour slower and the trip takes one hour longer.

[tex]Speed = \dfrac{distance}{time}\\\\v - 30mph = \dfrac{y}{1+0.5}\\\\v = \dfrac{y}{1+0.5} + 30[/tex]

Substitute the value of v from equation 1 to equation 2,

[tex]v = \dfrac{y}{1+0.5} + 30\\\\\dfrac{y}{0.5} = \dfrac{y}{1.5} + 30\\\\\dfrac{y}{0.5} = \dfrac{y +30(1.5)}{1.5}\\\\y (1.5) = 0.5(y +45)\\\\1.5y = 0.5y + 22.5 \\\\1.5y - 0.5y = 22.5\\\\1y = 22.5\\\\y = 22.5 \ miles[/tex]

Hence, The required distance of Jack's father's work from home is y = 22.5miles.

To know more about Distance click the link given below.

https://brainly.com/question/14036614

What would the answer be?

Answers

Answer:

i and ii

Step-by-step explanation:

Those are the only two whose rates stay consistent.

What is -15.7 - (-8.2)?

Answers

Answer:

-7.5

Step-by-step explanation:

I used a calculator

Step-by-step explanation:

- and - makes a + the result will be positive

and now you just do 15.7-8.2=7.5

What is the missing expression?

x 8 + 3x 5 = x5(_____)

x + 3
x2 + 3
x3 + 3

Answers

Answer:

x³ + 3

Step-by-step explanation:

Given

[tex]x^{8}[/tex] + 3[tex]x^{5}[/tex] ← factor out [tex]x^{5}[/tex] from each term

= [tex]x^{5}[/tex](x³ + 3 )

Answer:

x^3 + 3

That's your answer!!

Compound interest
Al invests some money in a bank that pays 5% compound interest per year
She wants it to be worth £8000 at the end of 3 years
What is the smallest amount she could invest?

Answers

Answer:

£6886

Step-by-step explanation:

P x e^r x t is the formula for compound interest

P x e^0.05 x 3 = 8000

P x 1.162 = 8000

P = 6885.66 = £6886 (round to the nearest pound)

Answer: £6910.71

Step-by-step explanation:

im not sure but i got this

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