Plz help i will mark u brainiest

Answer:

9

Step-by-step explanation:

6x + 2y = 30

9x - 4y = 3

if we double the first equation and add up to second one, we cancel 4y:

now we can find y:

finally, x+y

Answer:

700 passengers

Step-by-step explanation:

     4/5 = 560

(÷4)               (÷4)

     1/5 = 140

     560 + 140 = 700

I hope this helps <3

Answer:

700 passengers

Step-by-step explanation:

let total be x

560= 4/5 of total

therefore=

equating

560=4/5x

560*5/4=x

700=x

therefore answer is 700 passengers

Answer:

theres 1 set of 3

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

There is no equation which have no solution.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

1. 1/(x - 31) = 5

1 = 5 · (x - 31)

1 = 5 · x - 155

5 · x = 156

x = 31.2

2. 12 · x - 11 = 0

12 · x = 11

x = 11/12

3. 15 - 3 · x = - 8

3 · x = 23

x = 23/3

4. - x + 91 = 0

x = 91

Learn more about Equation here:

brainly.com/question/21107621

#SPJ7

The statement presents typing mistakes and is incomplete. Correct form is shown below:

Which equation has no solution?

A. 1/(x- 31) = 5

B. 12 · x - 11 = 0

C. 15 - 3 · x = - 8

D. - x + 91 = 0

E. Neither of all

Answer:

Whatever the gummy bears cost minus the amount left

Step-by-step explanation:

50= 8.25(5) + gummy bears

50=41.25 + gummy bears

8.75= gummy bears

Answer:

50 songs at $35

Step-by-step explanation:

Answer:

x = 50, y = 35

Step-by-step explanation:

Solve this system of linear equations by using substitution.  Equate the two equations to one another, thus eliminating y:

0.4x + 15 = 0.2x + 25

subtract 0.2x from both sides, obtaining:  0.2x + 15 = 25, or, after combining the constants, 0.2x = 10.

Finally we divide both sides by 0.2, which results in x = 50.

Use the first equation to find y:  y = 0.4(50) + 15 = 20 + 15 = 35

Answer:

Step-by-step explanation:

(x +13) + (4x + 2 ) = 180

5x + 15 = 180

Subtract 15 from both sides

5x = 180 - 15

5x = 165

Divide both sides by 5

x = 165/5

x = 33

Check

x + 13 = 33 +13  = 46

And

4x + 2 = 4*33 + 2 = 132 + 2 = 134

Answer: 12.6 years

Step-by-step explanation:

Hi, to answer this question we have to apply the compounded interest formula:  

A = P (1 + r/n) nt  

Where:  

A = Future value of investment (principal + interest)  

P = Principal Amount  

r = Nominal Interest Rate (decimal form, 4/100= 0.04)

n= number of compounding periods in each year (1)

t = years

Replacing with the values given  

8200= 5000(1+ 0.04/1)^1(t)

Solving for t

8200 =5000 (1.04)^t

8200/5000 =(1.04)^t

1.64 =(1.04)^t

log 1.64 =log (1.04)^t

log 1.64 = t log (1.04)

log 1.64/ log (1.04) =t

t = 12.6 years

Answer:

Bag 1: 20

Bag 2: 40

Step-by-step explanation:

Let x be the amount taken out of bag 2

Then the amount left in each bag can be written as:

Bag 1: 50-3x

Bag 2: 50-x

Since we know that half of bag 2 is bag 1, that gives us:

50-3x = 1/2(50-x)

-> 50-3x = 25-x/2

Now lets isolate x and solve:

25 = 5x/2

-> 50 = 5x

-> x = 10

So plug x bag in for the original equations:

Bag 1: 50-3x = 50-3(10) = 20

Bag 2: 50-x = 50-10 = 40

Answer:

negative

Step-by-step explanation:

Since the parabola does not cross the y axis, there are no real roots,

When there are no real roots, the discriminant is less than zero  ( or negative)

Answer:

THE ANSWER IS NEGATIVE

Step-by-step explanation:

A

P

E

X

Nonrigid transformations are transformations that change the side lengths or angles of a shape

The nonrigid transformations are dilation and stretch

All type of transformations are rigid transformation, except dilation.

The dilation transformation is divided into two types

Hence, the nonrigid transformations are dilation and stretch

Read more about transformations at:

https://brainly.com/question/4289712

Answer:

A and D

Step-by-step explanation:

Answer:

(x-6)

Step-by-step explanation:

The factor form of that trinomial is: (x-3)(x-6), so the second option listed (x-6) is the one to select

Answer:

X-6=0

Step-by-step explanation:

Because the factors are 6 and 3

Answer:

6 hours

Step-by-step explanation:

Let's say that the number of hours that Yumi picked litter for is y.

You know that since Yumi picked litter for 2 hours more than Juan, y=x+2.

y=3m

x=2m

Subtract the second equation from the first:

y-x=m

Substitute:

x+2-x=m

2=m

This means that it takes 2 hours per mile of litter. Multiplying this by the 3 miles that Yumi walked makes a total of 6 hours. Hope this helps!

Answer:

D. 6 hours

Step-by-step explanation:

Answer:

3 * 5x

3 * 5(2)

3 * 10

30

Answer:

foodgnfnfnfd2vefvf3vedvwf wsvwsv

Answer:

H≤7

Step-by-step explanation:

Answer:

B. 7x-5 = 11

Step-by-step explanation:

you're putting -5 instead y in equation 7x+y = 11 so 7x+(-5) =11

[tex]See Solution Below;[/tex]  

[tex]A. 6m - 2 = m + 13,\\6m - m = 13 + 2,\\5m = 15,\\m = 3;\\ OneSolution[/tex]   [tex]F. 18x - 5 = 3 * ( 6x - 2 ),\\18x - 5 = 18x - 6,\\18x - 18x = - 6 + 5,\\0 = - 1 ; NoSolution[/tex]    

[tex]B. 4y + 9 = 4y - 7,\\4y - 4y = - 7 - 9,\\0 \neq - 16 ; NoSolution[/tex]

[tex]C. 3c + 2 = 3c + 2,\\3c - 3c = 2 - 2,\\0 = 0 ; Infinite Solution[/tex]

[tex]E. - 8j + 14 = - 2 * ( 4j - 7 ),\\- 8j + 14 = - 8j + 14,\\- 8j + 8j = 14 - 14,\\0 = 0 ; InfiniteSolution[/tex]

[tex]D. 3 * ( x - 4 ) = 2x + 6,\\3x - 12 = 2x + 6,\\3x - 2x = 6 + 12,\\x = 18 ; OneSolution[/tex]

Answer:

it should be either option 1 or option 3

Step-by-step explanation:

Answer:

Given below

Step-by-step explanation:

M is Mikey and B is Betty in,

Current ages:

M= x

B= 3x (cuz she is 3 times older)

After 5 years

M= x+5

B= 3x+5 (5 years added to present age)

It says the ages of Betty after 5 years (3x+5) will be twice as much as Mikey (2(X+5))

So,

3x+5 = 2(x+5)

3x+5 = 2x+10

3x -2x = 10-5

x = 5

Therefore,

The current ages are

Betty : 3x = 3*5 = 15

Mikey: 5 (x)

You can verify by checking with the criterias or clues given in the question.. hope this helps..mark as brainiest if this was helpful:)

Answer: The current ages are

Betty : 3x = 3*5 = 15

Mikey: 5 (x)

Step-by-step explanation:

Hoped this helped

Answer:

3) The function's leading coefficient is negative.

Explanation:

(1) Is not the answer because when x = 3, f(x) = 0.

(2) Is not the answer because when f(x) = -3,

x = 0.

(4) Is also not the answer because the y-values on both sides of (1, -4) are mirroring each other.

Therefore,

(3) is the answer, by elimination, but also because there is not proof of the leading coefficient being negative, as we don't see the original equation.

I hope this helped! :)

Answer:

The Axis of symmetry shows the highest point on the line and is a vertical line at the highest point on the graph x=1.5, y=36

Step-by-step explanation:

checked on a graphing calculator

Answer:

t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Its A because based on where the major drops and or rises in the lines it matches up to the numbers for the students. You really just got to eye it and try and level out where the two lines have the same number to see if it matches. Hopefully this was somewhat helpful lol. I'm not the best at giving explanations

Answer:

census is a total of the population of a county and/or state.

samples are random selections of people or things

Step-by-step explanation:

If Sky wanted to get a survey from 100 kids who liked baseball or softball in her school. She would not pick the first 100 because it is not random. She would choose choose kids at random till she got her quota.

Answer:

30 miles

Step-by-step explanation:

We can use a ratio to solve

6 miles          x miles

------------     = -------------

20 minutes        100 minutes

Using cross products

6 * 100 = 20 x

Divide each side by 20

600/20 = 20x/20

30 =x

Answer:

30 miles

Step-by-step explanation:

First you want to divide 100mins by 20mins which will equal 5

Then multiply 5 by 6 which will equal 30

Answer:

1. y+5=4x-40

2.y=4x-45

Step-by-step explanation:

To get the slope of a line you do y₂-y₁/x₂-x₁ so we plug in the values -9+5/9-10 and we get -4

Point-slope form states y-y₁=m(x-x₁) where m is the slope so plug in the values we get y+5=4(x-10) and you get y+5=4x-40 then turn this equation into y=mx+b and get y= 4x-45

Answer:

Number of half units =10; V= 1 1/4

Step-by-step explanation:

1*5/4*1/2=5/4 = 1 1/4

Answer:

8.106

Step-by-step explanation:

Use Pythagorean Theorum for this question, a^2+b^2=c^2

If you put the numbers into the equation you get 6.3^2+5.1^2=c^2.

Simplify and get 65.7=c^2

To get rid of the square, you square root both sides, which will get you 8.106=c (since the answer wants round to 3 numbers behind the decimal point)

Therefore the missing length is 8.106cm. (For estimation just write a random number you think it would be before actually solving the problem.

Answer for #2:

Right Triangle

Not Right Triangle

Not Right Triangle

Right Triangle

Not Right Triangle

Step-by-step explanation:

Just use the pythagorean thereum for each of the questions to see if the values match up