how do I explain this?​

Answer:

- True

- True

- False

- True

Step-by-step explanation:

- Subtracting the equation will get rid of y variable therefore it's a correct and logical first step to solve the system

- The solution is indeed (-3, -3) as if we substitute these values in both equation, the equation will be correct and valid.

[tex]-2(-3)+(-3)=3[/tex] (Correct)

[tex]3(-3)+2(-3)=-15[/tex] (Correct)

- We have already determined the logical first step. Multiply by -2 will not get rid of any of the variables. Therefore, this is false.

- The solution can be written as one value since x = y = -3. Therefore, this statement is true.

Answer:

19/2

or mixed fractions that is [tex]9\frac{1}{2}[/tex]

Answer:

Step-by-step explanation:

8) B(x) = [tex]5^{x +1}[/tex]

[tex]5^{x + 1} = 3125 \\\\5^{x +1} = 5^{5}\\\\[/tex]

Compare the exponents,

x + 1 = 5

   x = 5 - 1

   x = 4

[tex]10)2^{x-4}=512\\\\2^{x -4} = 2^{9}\\\\[/tex]

Compare exponents,

x - 4 = 9

    x = 4 + 9

    x = 13

Answer:

5.12 * 10^6

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

n+1=4(n-8)

n+1=4n-32

4n-n-32=1

3n-32=1

3n=1+32

3n=33

n=33/3

n=11

Answer:

n = 11

Step-by-step explanation:

The equation is n+1=4(n-8). This is much easier to solve after expanding, which makes n+1=4n-32. Then, add 33 to each side to make n+33=4n. Next, take away n from each side, to get 33=3n. You want to find n, so divide each side by 3. This means you end up with 11=n.

9514 1404 393

Answer:

  y +2 = -1/2(x -7)

Step-by-step explanation:

The line PQ has a rise of 6 units for a run of 3 units, so its slope is ...

  m = rise/run = 6/3 = 2

A line perpendicular to PQ will have a slope that is the opposite reciprocal of that, so ...

  -1/m = -1/2

We have the slope of the desired line, and a point it needs to pass through, so we can use the point-slope form of the equation of a line.

  y -k = m(x -h) . . . . . . line with slope m through point (h, k)

An equation for the desired line is ...

  y +2 = -1/2(x -7)

__

This can be rearranged to other forms.

  y = -1/2x +3/2 . . . . . slope-intercept form

  x +2y = 3 . . . . . . . . . standard form

Answer: Picture Below

Step-by-step explanation:

Took the test

Answer:

-6y-18

Step-by-step explanation:

hope this helps :D

Answer:

7 buffalos and 3 ducks

Step-by-step explanation:

create a system of equations:

4 y + 2 x = 34

y + x = 10

* y is for buffaos and x is for ducks

solve the equation:

y=10-x

4(10-x)+2x=34

x=3

y=10-3

y=7

7 buffalos and 3 ducks

Answer: Mary

Step-by-step explanation:

Tobey 432 yards is 1296 foots

Mary 1/4 mile is 1320 foots

You didnt mark what kind of measurment Finn has but I assume it's foots, then Mary wins!

(Tobey 1296)

(Finn 1300)

(Mary 1320)

Answer:

Yeah it's Mary

Step-by-step explanation:

Answer:

Step-by-step explanation:

The circumference of a circle formula is:

10 in the given equation represents the diameter of the circle, d = 10

The options that represent solutions to the given inequality are:

The inequality is:

[tex]y > 2 + 9x[/tex]

Item a:

x = 7, hence, the solution is:

[tex]y > 2 + 9(7)[/tex]

[tex]y > 67[/tex]

67 > 65, hence it is a solution.

Item b:

x = 8, hence, the solution is:

[tex]y > 2 + 9(8)[/tex]

[tex]y > 74[/tex]

74 = 74, hence it is not a solution.

Item c:

x = 5, hence, the solution is:

[tex]y > 2 + 9(5)[/tex]

[tex]y > 47[/tex]

49 > 47, hence it is a solution.

Item d:

x = 4, hence, the solution is:

[tex]y > 2 + 9(4)[/tex]

[tex]y > 38[/tex]

37 < 38, hence it is not a solution.

You can learn more about inequalities at https://brainly.com/question/25235995

Answer:

Since the triangles are congruent, AB=ED so AB=14

Angles F is congruent to angle C so F=39 degrees

Step-by-step explanation:

Answer:

Step-by-step explanation:

AS the triangles are congruent corresponding sides and angles are congruent.

So AB = DE = 14.

m < F = m < C =  39 degrees.

Answer:

2 hours

Step-by-step explanation:

Subtract the 4 already then divide 16 by 8 and you get 2 :)

Answer:

hmmmm... lets see the invisible numbers i dont know you tell me

Step-by-step explanation: you cant see the numbers

Answer: hey i know i am suposed to give u the answer but for your brain just look up a video on yt so it can help you do better The more you know math the less math you have to do. like this you memorize the formula it can help you more than me doing it for you and it 55

Answer:

-15 5/6

Step-by-step explanation:

Combine the given terms (through addition and subtraction).

14 7/8  -  15  -  5/6  -  14 7/8

Identify the LCD:  It is 24

Therefore we have:

14 21/24 - 15 - 20/24 - 14 21/24

Combining the whole numbers, we get

14 - 15 - 14, or -15

and combining the fractions, we get

21 - 20 - 21

----------------- = -20/24

       24

and so we have -15 - 20/24, or -15 - 5/6, or -15 5/6

Answer: 50%

Step-by-step explanation: Good luck! :D

Answer:

The probability is 37.5%

Step-by-step explanation:

There are eight total outcomes, but we only need to focus on three. Ang winning a mug and Jack winning either a t-shirt or a mug, that makes three. Write that as a fraction: 3/8, and then divide. 3 divided by 8 gives us 0.375. But we need a percent so multiply that by 100, that now gives us 37.5.

So, the probability that either Ang wins and is given a mug, or Jack wins is 37.5%. If it makes you feel more confident in this, I put the same exact answer for my assessment and I got it correct.

Also, “The monks named me aOng.”

you are strong, you are amazing, you are worth more than a number. i value you. don't give up. do you're best and that's all that matters. sleep and your wellbeing and mental health are more important than your grades.

you got this <3

Answer:

1.586 x 10³

Step-by-step explanation

900.000 + 50.000 + 9.000 + 600 + 20 + 7=1586

standard form:

1.586 x 10³

Answer:

160 hope this work!!! love

Answer:

Step-by-step explanation:

The cost that a carpet can cleaning company charges is directly proportional to the number of rooms cleaned. The cost to clean 50 rooms is $1,100.

A.) Write a direct variation equation to represent the cost.

Cost ∝ Number of room

C ∝ N

C = kN

k = Constant of Proportionality

k = C/N

k = 1100/50

k = 220

B.) Using the equation found in part a, how much would it cost a hotel to have 150 rooms cleaned

c = 220 × 150

c = $33000

Cost to clean 150 rooms = $33,000

Answer:

x=-2, y=-4. (-2, -4).

Step-by-step explanation:

x=3y+10

x=y+2

----------

3y+10=y+2

3y-y=2-10

2y=-8

y=-8/2

y=-4

x=-4+2=-2

Answer: 0.614

Step-by-step explanation:

First find the probability that he catches the bus in a day.

Probability of catching bus once = 1 - Probability of missing bus

= 1 - 0.15

= 0.85

If he arrives on 3 consecutive days at 7:30 am, the probability he will catch the bus is:

= (P | Day 1) * (P | Day 2) * (P | Day 3)

= 0.85 * 0.85 * 0.85

= 0.614

The approximate probability that he catches the bus all  three days is 0.614.

Given that,

Forrest has determined that if he gets to the bus stop at 7:30 am, there is a 0.15 probability that he misses the bus.

If  he arrives at the bus stop three consecutive days at 7:30,

We have to determine,

What is the approximate probability that he catches the bus all  three days.

According to the question,

The probability that he catches the bus in a day.

Probability of catching bus once = 1 - Probability of missing bus,

= 1 - 0.15

= 0.85

If he arrives on 3 consecutive days at 7:30 am,

Then, the probability he will catch the bus is:

= (P | Day 1) × (P | Day 2) × (P | Day 3)

= 0.85 × 0.85 × 0.85

= 0.614

Hence, The approximate probability that he catches the bus all  three days is 0.614.

To know more about  Probability click the link given below.

https://brainly.com/question/11234923

Answer:

its B .

Step-by-step explanation:

Answer:

[tex] \frac{4}{3} [/tex]

Step-by-step explanation:

consider downloading photomath

Answer:

$19

Step-by-step explanation:

this is the answer

Answer:3

Step-by-step explanation:

y/2 is what we need. If y is 6. Then 6/2=3.