WHATS X AND Y??

Y = 3x+ 4 and 2x – 4y = -6

Answers

Answer 1

Answer:

X=-1, y=1

Step-by-step explanation:

Substitute value of y in first equation (3x+4) with y of second equation.

2x-4(3x+4)=-6

2x-12x-16=-6

-10x=10x=-1

solve for y but putting -1 for x value in either equation

y=3(-1)+4

y=-3+4

y=1


Related Questions

Nancy and brad each found an old Singh at a yard sale . Which sing has a greater area which Nancy has the area of 2in , 4 in , 12 in , 8 in and brad has 6 in and 22 in

Answers

Answer:

SINGH???

Step-by-step explanation:

Explain what the Union, Intersection, and complement in a venn diagram type probability situation represent and mean​

Answers

Answer:

The union of two sets contains all the elements contained in either set (or both sets). The complement of a set A contains everything that is not in the set A.

Step-by-step explanation:

please help.. all my points are gone and I need this asap
NO LINKS ​

Answers

Answer:

Step-by-step explanation:

Shelly invested in a lifetime annuity that begins payments at age 65. Her life
expectancy is 88. Shelly invested $800,000 into the annuity, which earns 4.8%
APR, compounded monthly. With this annuity, what is Shelly's monthly
payment amount?
A. $4756.93
B. $4792.38
C. $4984.72
D. $4897.79

Answers

Answer: 4792.38

Step-by-step explanation: just did it

Please help and explain how you got the answer

Answers

Answer: 30°

Step-by-step explanation:

we have to find the angle adjacent with the right angle. For this we use the (-).

At this point, I am guessing you know how to use SOH-CAH-TOA, for this one we use SOH so sin. If you have a calculator set it on degree mode, then plug it in as sin⁻₁(), we put it like that because the missing angle has the given number opposite and the hypotenuse. It solves it and now we get 30 for the answer. I dont know if that made sense, tell me if it didnt so I can explain it better.

The Other guy needs to get Brainliest, he got it right, so I’m answering so he can

The local theater has three types of seats for Broadway plays: main floor, balcony, and mezzanine. Main floor tickets are $48, balcony tickets are $45, and mezzanine tickets are $34. One particular night, sales totaled $65,140. There were 381 more main floor tickets sold than balcony and mezzanine tickets combined. The number of balcony tickets sold is 328 more than 2 times the number of mezzanine tickets sold. How many of each type of ticket were sold?
I already have these equations: 48x+45y+34z=65140, x=y+z+381, y=2x+328, but I can't figure out how to substitute them.

Answers

Answer: In this problem, you have three unknowns: broadway tickets for the (1) main floor, (2) balcony and (3) mezzanine. To solve algebraic equations, the total number of unknowns must be the same with the number of independent equations. With that, let's formulate these three equations.

Let the 3 unknowns be

x = number of tickets for the main floor

y = number of tickets for the balcony

z = number of tickets for the mezzanine

The independent equations are:

59x+50y+40z=73,785 --> eq 1

x = y+z+435 --> eq 2

y = 78 + 33 z ---> eq 3

Solve the equations simultaneously. Substitute eq3 to eq 2

x = 78+33z+z+435

x = 513+34z --> eq 4

Substitute eq 4 and eq 3 to eq 1

59(513+34z)+50( 78 + 33 z)+40z=73,785

Solve for z using the calculator: z = 11

Use eq 4 to find x: x = 877

Use eq 2 to find y: y = 432

There were 877 main floor tickets, 432 balcony tickets and 11 mezzanine tickets sold.

Step-by-step explanation:

Answer:

Main floor - 892, balcony - 450, mezzanine- 61

Step-by-step explanation:

Main floor - x, balcony - y, mezzanine- z

Equations:

48x + 45y + 34z = 65140            ↔ (1)x = 381 + y + z                              ↔ (2)y = 2z + 328                                 ↔ (3)

Substitute (3) into (2):

x = 381 + 2z + 328 + z  ⇒ x = 3z + 709                                 ↔ (4)

Substitute (2) and (4) into (1) and solve for z:

48(3z + 709) + 45(2z + 328) + 34z = 65140144z + 48*709 + 90z + 45*328 + 34z = 65140268z + 34032 + 14760 = 65140268z = 65140 - 48792268z = 16348z = 16348/268z = 61

Find x and y:

x = 3z + 709 = 3*61 + 709 = 892y = 2z + 328 = 2*61 + 328 = 450

Factor out the greatest common factor

Answers

3x(5x-7) is the answer

Select the
outliar i the data set 1,64,66,68,69,70,78,79

Answers

Answer:

1 is the out liar

Step-by-step explanation:

This is because there is a huge gap between 1 and 64. The rest of the numbers are in a cluster.

Find the equation of the line. Use exact numbers. y= ( )x + ( )

Answers

Answer:

y=-2x+5

Step-by-step explanation:

Use the equation y=mx+b

We can find the b(y-intercept) by looking at the graph

The graph crosses the y-axis at (0,5)

We can look at the slope at the graph. We can see its down 4 over 2 so the slope is -2.

Plug that into the equation y=mx+b

y=-2x+5

pls help me
!!!!!!!!!!!!!!!!!!!!

Answers

its 50.3.2  tags: c c c cc  cc c  c c c ar c free car no yes show two plus pwe

Express the quantity "1/3 revolutions per minute" in radians per second. Write your
answers in terms of n
A. n/45 rad/sec
B. n/120 rad/sec
C. n/90 rad/sec.
D. n/60 rad/sec

Answers

Answer:

[tex]\huge\blue{\mid{\fbox{\tt{ANSWER}}\mid}}[/tex]

C. n/90 rad/sec.

Can someone help with this please

Answers

If you’re trying to see what number can make 3,5 it’s 1,5 or 13/10 I think

Solve the following system of inequalities graphically on the set of axes below. State
the coordinates of a point in the solution set.
y > -2x - 1
y > x + 2

Answers

Answer:

[tex](x,y) = (-1,1)[/tex]

Step-by-step explanation:

Given

[tex]y>-2x - 1[/tex]

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

Required

Solve graphically

See attachment for graph;

The black shade represents [tex]y>-2x - 1[/tex]

While the green, represents [tex]y>x + 2[/tex]

Next, determine the intersection points between the two lines

From the attached graph, we have:

[tex](x,y) = (-1,1)[/tex]

Hence, the solution is:[tex](-1,1)[/tex]

HELP MEEEEEEE PLEASE

Answers

Answer:

3 option

Step-by-step explanation:

Answer:

2s

Step-by-step explanation:

Twice means multiplicaiton of 2

So the answer is 2s

Find the perimeter and area of this composite figure​

Answers

Answer:

34

Step-by-step explanation:

Hope helps :)

Answer:

Hi! Your answer is 34! :D

Step-by-step explanation:

The lovely human who answered above me is indeed correct.

I hope you have an amazing day! Please give brainliest!

Samantha paid $4.16 for a sandwich, $1.50 for a bag of potato chips, and $1.19 for a can of soda. How much change will she receive if she pays with a $10 bill?

Answers

Answer:

$3.15

Step-by-step explanation:

$4.16+$1.50+$1.19=$6.85

$10.00-$6.85=$3.15

(Sorry if it's wrong.)

Convert 124.042 to Base 10​

Answers

Answer:

dfsdfsdfsdfsdfsdf

Step-by-step explanation:

A roller coaster is being designed that will accommodate 60 riders. The maximum weight the coaster can hold safely is 12,000 pounds. According to the National Health Statistics Reports, the weights of adult U.S. men have mean 189 pounds and standard deviation 63 pounds, and the weights of adult U.S. women have mean 165 pounds and standard deviation 76 pounds.
a. If 60 people are riding the coaster, and their total weight is 12,000 pounds, what is their average weight?
b. If a random sample of 60 adult men ride the coaster, what is the probability that the maximum safe weight will be exceeded?
c. If a random sample of 60 adult women ride the coaster, what is the probability that the maximum safe weight will be exceeded?

Answers

Answer:

a. Their average weight is of 200 pounds.

b. 0.0875 = 8.75% probability that the maximum safe weight will be exceeded

c. 0.0002 = 0.02% probability that the maximum safe weight will be exceeded

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

a. If 60 people are riding the coaster, and their total weight is 12,000 pounds, what is their average weight?

12000/60 = 200 pounds

Their average weight is of 200 pounds.

b. If a random sample of 60 adult men ride the coaster, what is the probability that the maximum safe weight will be exceeded?

Men means that [tex]\mu = 189, \sigma = 63[/tex].

Sample of 60 means that [tex]n = 60, s = \frac{63}{\sqrt{60}} = 8.13[/tex]

Safe weight will be exceeded if the sample mean is above 200 pounds, which has probability of 1 subtracted by the pvalue of Z when X = 200. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{200 - 189}{8.13}[/tex]

[tex]Z = 1.35[/tex]

[tex]Z = 1.35[/tex] has a pvalue of 0.9115

1 - 0.9115 = 0.0875

0.0875 = 8.75% probability that the maximum safe weight will be exceeded.

c. If a random sample of 60 adult women ride the coaster, what is the probability that the maximum safe weight will be exceeded?

Women means that [tex]\mu = 165, \sigma = 76[/tex]

Sample of 60 means that [tex]n = 60, s = \frac{76}{\sqrt{60}} = 9.81[/tex]

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{200 - 165}{9.81}[/tex]

[tex]Z = 3.57[/tex]

[tex]Z = 3.57[/tex] has a pvalue of 0.9998

1 - 0.9998 = 0.0002

0.0002 = 0.02% probability that the maximum safe weight will be exceeded

In the image above x=11 cm. Find the surface area of the figure.

Answers

Answer:

726

Step-by-step explanation:

Which expression is equivalent to 3/32x^8y^10

Answers

Answer:

(9-8) + 8 = 9

Step-by-step explanation:

Answer: Third option

Step-by-step explanation: doing a point giveaway stay tuned!

A machine in a candy factory produces 5 and 1/2 batches of milk balls every 3/4 hour. Which of the following is the unit rate for producing the milk balls, in batches per hour?

a
4 and 1/8 : 1
b
5 and 3/4 : 1
c
6 and 1/4 : 1
d
7 and 1/3 : 1

Answers

5.5 milk balls : 0.75 hour
X : 1 hour
0.75x = (1)(5.5)
x = 7.333

So it’s 7and 1/3 in 1 hour
Answer d

Pls help! And I will mark you as brainlist im not joking!

Answers

Answer:

[tex]third \: answer \\ if \: f(x) < 0 \\ - 6 < x < 2[/tex]


What is the slope of the line 18x + 25y = 5?

Answers

it would be 18/25 i believe

Find the value of x.

Answers

Answer:

x = 16

Step-by-step explanation:

First, find hypotenuse using 18 and 16.

Using Pythagorean theorem, it gives 24.08

now use it again with the hypotenuse and (36/2) = 18

This gives us x = 16

Use △GHJ, where A, B, and C are midpoints of the sides. When AC = 3y−5 and HJ = 4y+2, what is HB?

Answers

The answer for the question is

Use △GHJ, where A, B, and C are midpoints of the sides

HB=14

Given :

Use △GHJ, where A, B, and C are midpoints of the sides

AC = 3y−5 and HJ = 4y+2

Apply mid point theorem

mid segment = half of base

[tex]AC=\frac{1}{2}(HJ)[/tex]

Now we replace AC and HJ

[tex]AC=\frac{1}{2}(HJ)\\3y-5=\frac{1}{2} (4y+2)\\3y-5=2y+1\\Subtract \; 2y\\1y-5=1\\Add \; 5\\1y=1+5\\y=6[/tex]

B is the midpoint . HB is half of HJ

[tex]HB=\frac{1}{2} HJ\\HB=\frac{1}{2}(4y+2)\\x=6\\HB=\frac{1}{2}(4(6)+2)\\\\HB=\frac{1}{2}(28)\\\\HB=14[/tex]

So the value of HB = 14

Learn more : brainly.com/question/23120373

The circumference of a circle is 119.32 in what is the diameter of the circle?

Answers

Answer:

38

Step-by-step explanation:

119.32/3.14 since 3.14 is pi and c=pi*d

Answer:

d≈37.98

Step-by-step explanation:

C=2πr

d=2r

Solving for d

d=C

π=119.32

π≈37.98074

For what values of b will F(x) = logbx be a decreasing function?

Answers

Answer:

It is a decreasing function for 0 < b < 1.

Step-by-step explanation:

Logarithm function:

The logarithm function is given by:

[tex]F(x) = \log_{b}{(x)}[/tex]

The base b determines if the function increases or decreases.

For 0 < b < 1, the function decreases.

For b > 1, the function increases.

In this question:

By the definition above, it is a decreasing function for 0 < b < 1.

Select all of the following that can be a counterexample for the statement below.
If x is an integer, then x +2 >7.
-2
3
6
8

Answers

Answer:

-2, 3

Step-by-step explanation:

We are given the following inequality:

[tex]x + 2 > 7[/tex]

Solving it, we have that its solution is:

[tex]x > 7 - 2[/tex]

[tex]x > 5[/tex]

So values of x of 5 and lower are counterexamples to this, which means that -2 and 3 are correct options to this question.

I need help ASAP 30 points

Answers

Volume = length x width x height

Volume = 1.4 x 1.3 x 3.5 = 6.37 cubic cm

What is the first step to figure out the solutions for x in the following equation?
|x - 3| +2=6

Answers

Subtract 2 form both sides
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