Could someone help me, please

Could Someone Help Me, Please
Could Someone Help Me, Please
Could Someone Help Me, Please

Answers

Answer 1

Answer:

Q1: No solutions

Q2: x=2, y=-2

Q3: x=1, y=4

Step-by-step explanation:

Q1: Found out 0y = 18 which is impossible therefore no solution.

Q2:

In the first equation: [tex]2x - 4y = 12[/tex]

Let's express x in terms of y by changing the subject. Follow my steps.

[tex]2x = 12+4y[/tex]

[tex]x = \frac{12+4y}{2}[/tex]

Now let's put the x above into the second equation: [tex]-14x-4y=-20[/tex]

It becomes: [tex]-14(\frac{12+4y}{2})-4y=-20[/tex]. Follow my steps.

[tex]-7(12+4y)=-20+4y[/tex]

[tex]-84-28y=-20+4y[/tex]

[tex]-32y=64[/tex]

[tex]y=-2[/tex]

Put y = -2 into the first equation:

[tex]2x-4(-2)=12[/tex]

[tex]2x+8=12[/tex]

[tex]2x=12-8[/tex]

[tex]2x=4[/tex]

[tex]x=2[/tex]

Q3:

Multiply the first equation by 3 and the second equation by 7, so that both are 21x.

1st equation:
[tex]3(7x-3y)=3(-5)[/tex]
[tex]21x-9y=-15[/tex]

2nd equation:

[tex]7(3x+2y) = 7(11)[/tex]

[tex]21x+14y = 77[/tex]

We can now substract the 2nd equation with the 1st equation so that both 21x cancels out and only the variable y remains.

[tex]21x-9y-(21x+14y)=-15-77[/tex]

[tex]21x-9y-21x-14y=-92[/tex]

[tex]-23y=-92[/tex]

[tex]y=4[/tex]

Put y = 4 into the second equation to find x.

[tex]3x+2(4)=11[/tex]

[tex]3x+8=11[/tex]

[tex]3x=11-8[/tex]

[tex]3x = 3[/tex]

[tex]x=1[/tex]


Related Questions

please help asap I'm not sure how much time I have

Answers

tan 37,4 = opposite/adjacent

tan 37,4 = x/12,8
• then multiply both sides by 12,8

12,8tan 37,4 = x
Therefore x = 9, 79 x 100
= 97, 86
= 100
( I guess that’s how you can round it to the nearest hundred, please correct me if I’m wrong)

Second one:

Help please
​(3/5)^2​

Answers

[tex]( { \frac{3}{5} })^{2} [/tex],

[tex] \frac{9}{25} [/tex]

is the answer

Answer:

(3/5)by2

Step-by-step explanation:

3/5

3*3=9

5*5=25

9/25

Can someone help with the third one

Answers

Answer: 45%

Step-by-step explanation:

27/60 squares are covered

I reduced the fraction to 9/20, multiplied by 5 to make the denominator 100 and the numerator is 45, therefore fraction is 45/100.

HELP! Simplify

3/14[tex]\sqrt{98}[/tex]

Answers

Here is the problem simplified, todo this you
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real


Solve By Substitution

The senior classes at High School A and High School B planned separate trips to the water park. The senior class
at High School A rented and filled 14 vans and 16 busses with 1086 students. High School Brented and filled 10
vans and 13 busses with 870 students. Every van had the same number of students in it as did the busses. Find
the number of students in each van and in each bus.​

Answers

can u take a picture of the whole entire paper again please ? i can’t see all of it .

Find two integers with a product of −40 and a sum of −3.

Answers

1.) Two numbers have a sum of 3 and a product of -40. Find the numbers.
= 8,-5
8(-5) = -40
8 + (-5) = 3

Two times a number divided by seven if forty. Express this sentence using algebraic symbols.

Answers

Answer:

(2x)/7=40

Step-by-step explanation:

number is x

(2x)/7

=40

1. In this scale drawing of Mr. Sanchez's garden,
each square represents 1 square meter. What
is the perimeter of the garden?
A. 36 meters
C. 48 meters
B. 45 meters
D. 51 meters
Garden

Answers

Answer:

A 36 meters

Step-by-step explanation:

the perimeter is the sum of all sides around the object.

and 1 m² is a square with 1m side length.

so, we only need to count the bordering squares.

we have

12 + 3 + 3 + 5 + 2 + 3 + 3 + 5 = 36 m

I guess, we are only doing the first drawing, right ?

Find the values of the missing arc or find x

Answers

Answer: x=3

Step-by-step explanation:

Solve the equation.
-36= -6(2x-14)

1. 10
2. 1.8
3. 24
4. 4

isn’t it some crazy long number?

Answers

The answer to your question is 4

what is 30% of 90???

Answers

Answer:

30 percent of 90 is 27

Answer:

27

Step-by-step explanation:

What is 30 percent (calculated percentage %) of number 90? Answer: 27.

Bus A stops at a certain bus stop every 25 minutes. Bus B stops at the same stop every 40 minutes. If both buses are at the bus stop at 9:30 a.m., when is the next time they will be there together again? A. 12:20 p.m. B. 12:50 p.m. C. 1:10 p.m. D. 1:30 p.m.​

Answers

Basically we are finding the least common multiple of 40 & 25:

25 : 1,25,50,75,100,125,150,175,200

40: 1,40,80,120,160,200

They will meet again after 200 minutes.

[tex]x = \frac{200}{60} = 3 + \frac{20}{60} [/tex]

So they will meet again after 3 hours and 20 minutes;

9:30 + 3:20 = 12:50 p.m.

That's your answer

The next time where both bus A and bus B are together at a stop is

12:50 pm.

Given,

Bus A stops at a certain bus stop every 25 minutes.

Bus B stops at the same stop every 40 minutes.

If both buses are at the bus stop at 9:30 a.m.

We need to find when is the next time they will be there together again.

How many minutes in one hour?

1 hour = 60 minutes.

Find the total minutes traveled by bus A after 8 stops.
We have,

1 stop = 25 minutes

Multiplying by 8 on both sides.

8 x 1 stop = 8 x 25 minutes

8 stops = 200 minutes

We see that at the 8th stop bus A has traveled for 200 minutes.

Find the total minutes traveled by bus B after 5 stops.
We have,

1 stop = 40 minutes

Multiplying both sides by 5.

5 x 1 stop = 5 x 40 minutes

5 stops = 200 minutes

We see that at the 5th stop bus B has traveled for 200 minutes.

We can say that after 200 minutes of traveling each bus has stopped at the same place.

We have,

Both buses are at the bus stop at 9:30 a.m.

So,

60 minutes = 1 hour

200 minutes

= 60 minutes + 60 minutes  + 60 minutes  + 20 minutes

= 3 hours 20 minutes

So,

9:30 am + 3 hours 20 minutes

= 12:50 pm

Thus the next time both the buses are together is 12:50 pm.

Learn more about finding the time when two buses leave the stop together here:

https://brainly.com/question/199965

#SPJ2

               

Which would be used to solve this equation? Check all that apply.
1. subtracting 3 from both sides of the equation
2. multiplying both sides of the equation by 3
3. dividing both sides of the equation by 3
4. substituting 4 for p to check the solution
5. substituting 36 for p to check the solution

Answers

whats the equation ?

Which of the following is the best estimate for the direction of the given vector?
A. 60° N of E
B. 60° E of N
C. 60° W of S
D. 60° S of W

Answers

Answer:

A. 60-degrees N of E because it is closer to the east than the north.

Step-by-step explanation:

What is 5.72x10^3 in standard form

Answers

Answer:

0.00572

Step-by-step explanation:

pretty sure thats the answer

Round 324,145
to the nearest
hundred thousand.

Answers

Answer:

320,145

Step-by-step explanation:

Anything under 5 goes down and anything above 5 goes up.

Answer:

300,000

Step-by-step explanation:

Given the following question:

[tex]324145[/tex]

To round to the nearest hundred thousand of this number we must first find the hundred thousand place value and then determine if the number next to that place value is greater than five, if so, we can round the number up.

[tex]324145[/tex]
[tex]PV=3[/tex]
[tex]2 < 5[/tex]
[tex]=30000[/tex]

Rounded to the nearest hundred thousand "300,000" is your answer.

Hope this helps.

1/cosec theta-cot theta-1/sin theta =to prove 1/sin theta-1/cosec theta+cot theta​

Answers

Answer:

wat is dat about? :3

Find the area of the triangle below:

Answers

Answer:

9 cm^2

Step-by-step explanation:

The area of a triangle is calculated with the following formula:

1/2*b*h (b: base, h: height)

The base is given as 3 and height is 6 so

1/2*3*6 = 9 cm^2 is the answer we are looking for.

Form the perfect square trinomial in the process of completing the square. what is the value of c? x2 3x c = startfraction 7 over 4 endfraction c c =

Answers

While making a perfect square for the given quadratic equation [tex]\rm x^2+3x+c=\frac{7}{4} +c[/tex] the value of c is 9/4

It is given that the quadratic equation  [tex]\rm x^2+3x+c=\frac{7}{4} +c[/tex] while forming the perfect square.

It is required to find the value of c.

What is a quadratic equation?

It is defined as the equation of polynomial of degree two. The standard form of the quadratic equation is as follows:

[tex]\rm ax^2+bx+c=0[/tex]  where [tex]\rm a\neq 0[/tex]

We have a quadratic equation:

[tex]\rm x^2+3x+c=\frac{7}{4} +c[/tex]

We know that we can make any quadratic equation into a perfect square by the perfect square trinomial method as follow:

[tex]\rm ax^2+bx+c=0\\\rm ax^2+bx=-c\\\rm ax^2+bx+(\frac{b}{2a})^2 =-c+(\frac{b}{2a})^2\\[/tex]

So, the value of 'c' would be:

[tex]\rm c=(\frac{b}{2a})^2\\[/tex]  here b=3 and a=1 by comparing the equation to the standard equation.

[tex]c=(\frac{3}{2\times1} )^2\\c=(\frac{3}{2} )^2\\c=\frac{9}{4}[/tex]

Thus,  while making a perfect square for the given equation the value of c is 9/4

Know more about the quadratic equation here:

https://brainly.com/question/2263981

Answer:

9/4

Step-by-step explanation:

correct on edge

Type the correct answer in each box. Spell all the words correctly, and use numerals instead of words for numbers. If necessary, use / for the fraction bar(s). We can show that ∆ABC is congruent to ∆A′B′C′ by a translation of unit(s) and a across the -axis. Reset Next

Answers

Answer:

We can show that ∆ABC is congruent to ∆A′B′C′ by a translation of (x-2, y) unit(s) and a across the x-axis.

Step-by-step explanation:

The triangle ABC is shown in the image attached. The coordinates of the triangle are A(8, 8), B(10, 4), C(2, 6), while the triangle A'B'C' is at A'(6, -8), B'(8, -4), C'(0, -6).

A transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, translation, dilation and rotation.

If a point O(x, y) is translated a units on the x axis and b units on the y axis, the new coordinate is O'(x+a, y+b).

If a point O(x, y) is reflected across the x axis, the new coordinate is O'(x, -y)

Hence if triangle ABC is translated -2 units on the x axis (2 units left), the new coordinates are A*(6, 8), B*(8, 4), C*(0, 6). If a reflection across the x axis is then done, the new coordinates are A'(6, -8), B'(8, -4), C'(0, -6).

Answer:

We can show that ∆ABC is congruent to ∆A′B′C′ by a translation of 2unit(s) left and reflected across the x-axis.

Step-by-step explanation:

if you answer this correctly, i will give you a Brainly :D

Answers

Answer:

trapizoide

Step-by-step explanation:

A teacher has a treats bag with eleven different types of candy/chocolate inside. What is the minimum number of pieces of candy must be taken to ensure that two of the same pieces of candy are picked?

Answers

The minimum number of pieces of candy must be taken to ensure that two of the same pieces of candy are picked is 12.

How to find the minimum number?

So obviously, there is the case where with only two draws you can get the same candy twice, but we need to find a number N such that we know for sure that always that we take N candy, we drew at least one pair of equal candy.

There are 11 types of candy in the bag.

Now, suppose the next thing.

First, you draw a candy, now there are 10 types of candy in the bag that are different than the one you got.

Now you draw again, and get a different candy, so now there are 9 types of candy in the bag different to the two you got.

Now you keep doing this and getting a different type of candy until you already have the 11 types of candy in your hands.

Now if you draw a candy again, one pair will be formed (because you have all the types of candy already).

From this, we can conclude that always that you draw 12 pieces of candy, at least one pair will be formed.

If you want to learn more about counting, you can read:

https://brainly.com/question/26953669

an art teacher had 2/3 gallon of paint to pour into containers. if he poured 1/8 gallon of paint into each container until he ran out of paint, how many containers had paint in them, including the one that was partially filled?

1
SEE ANSWER

Answers

Answer:

6 containers

Step-by-step explanation:

        This problem is asking us to divide the total 2/3 gallons by the 1/8 gallon of paint being poured into each container.

Given:

[tex]\frac{2}{3} /\frac{1}{8}[/tex]

"Keep, change, and flip:"

[tex]\frac{2}{3}*\frac{8}{1}[/tex]

Multiply across:

[tex]\frac{2*8}{3*1} =\frac{16}{3}[/tex]

Simplify:

5 [tex]\frac{1}{3}[/tex]

        Since the problem is counting the one partially filled, we round 5 [tex]\frac{1}{3}[/tex] up to be 6 containers with paint in them.

Among the 20 pirates of the Flightless Folly
crew, 4 of them own a pet crab each. What
percentage of pirates on board the ship own
a pet crab?

Answers

Answer:

20 percent

Step-by-step explanation:

4/20 or 1/5 or 20 percent

Find the area. Help please!!!! ​

Answers

30 because since the 2 shapes are just cut in half perfectly both shapes will be 15 and 15+15 = 30


helpppppppppppp meeeeee

Answers

Start by labeling the lines going up by 1 and going over one and then plot the coordinates.

What is the quotient of StartFraction 7 Superscript negative 1 Baseline Over 7 Superscript negative 2 Baseline EndFraction? StartFraction 1 Over 343 EndFraction One-seventh 7 49.

Answers

The quotient of the number given number  7 Superscript negative 1 Baseline Over 7 Superscript negative 2 Baseline is 7.

What is the quotient?

Quotient is the resultant number which is obtain by dividing a number with another. Let a number a is divided by number b. Then the quotient of these two number will be,

[tex]q=\dfrac{a}{b}[/tex]

Here, (a, b) are the real numbers.

The number StartFraction 7 Superscript negative 1 Baseline Over 7 Superscript negative 2 Baseline EndFraction, given can be written as,

[tex]\dfrac{7^{-1}}{7^{-2}}[/tex]

Let the quotient of this division is n. Therefore,

[tex]n=\dfrac{7^{-1}}{7^{-2}}[/tex]

A number in numerator of a fraction with negative exponent can be written in the denominator with the same but positive exponent and vise versa. Therefore,

[tex]n=\dfrac{7^{2}}{7^{1}}\\n=7[/tex]

Hence, the quotient of the number given number  7 Superscript negative 1 Baseline Over 7 Superscript negative 2 Baseline is 7.

Learn more about the quotient here;

https://brainly.com/question/673545

Answer:

C

Step-by-step explanation:

C

i need help ASAP!!!!!

Answers

Answer:

The correct answer should be 4

pls helpppppppppppppp

Answers

Answer:

-1/36

Step-by-step explanation:

-5/18  - ( -1/4)

Subtracting a negative is like adding

-5/18 + 1/4

Getting a common denominator of 36

-5/18 *2/2 + 1/4 *9/9

-10/36 + 9/36

-1/36

Evaluate the piecewise function for f(-2).
A. -15
B. -13
C. 11
D. 17

Answers

B. -13 dbdhsbdbbsbdbd
The answer would be B.)
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