Mathematics High School

Solve the system.

X+y=8
2x^2 - y= -5

Solve The System. X+y=82x^2 - Y= -5

Answers

Answer 1

Answer:

third option

Step-by-step explanation:

[tex]( x + y = 8 ) + ( 2x^{2} - y = -5 )\\\\(x + y + 2x^{2} - y ) = 8 + (-5)\\2x^{2} + x = 3[/tex]

Related Questions

Find the slope between the following two points.
(9, 0), (12, -1)

Answers

Answer:

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

Step-by-step explanation:

[tex]m=\frac{rise}{run}=\frac{-1-0}{12-9}=\frac{-1}{3}=-\frac{1}{3}[/tex]

Hope this helps.

How can we tell the computer both what to put on the web page, and how to organize it?

Prompt: In your own words, how does HTML help solve the problem of telling the computer what a web page looks like, not just what content is on it?

Answers

Answer:

Step-by-step explanation:

The way we do this is through coding. HTML is the go-to programming language that are basically instructions given to the computer explaining what content will go on the web page as well as how it will be organized. HTML tends to go hand-in-hand with CSS, another programming language that focuses on how the content will look, such as color, borders, shading, etc. All with the idea of making the content look nicer. Without these programming languages, it would be impossible for individuals to make webpages.

Help me out please an thank you

Answers

X=12
So answer B would be correct
They are vertical angles to those expressions are equivalent
4x-25=2x-1
2x=24
X=12

у + 6x — 36 = 0
Solve for y

Answers

Answer:

y=-6x+36

Step-by-step explanation:

у + 6x — 36 = 0

-add 36 to both sides

y+6x=36

-subtract 6x from both sides

y=36-6x or y=-6x+36

-This should be the correct answer

how tall am i?????????????????????/

Answers

5’6 - 5’8
that seems like an average height right

-
Michael uses lemonade concentrate and water to make lemonade for the family. The ratio of cups of lemonade
concentrate to cups of water is 1:3. If he made 32 cups of lemonade for the family, how many cups of
concentrate did he need?

Answers

Answer:

8 cups

Step-by-step explanation:

Given that the ratio is 1:3

concentrate =1

water=3

the total =3+1=4

using the part to all method

1/4=x/32

cross multiply

4x=32

divide both sides by 4 we have

x=32/4

x=8

Therefore the amount of concentrate is 8 cups

If 3/4 the way though the game Sam had 21 points, how many points would he expect to have for a full game? points​

Answers

Answer:

I'm guessing 28

Step-by-step explanation:

because 3/4 of 21 is 28

You are given a set of data with a mean of 50 and standard deviation of 8. Using the normal curve, give an example of an outlier and explain why.

Answers

Answer:

Anything less than 26, and greater than 74.

Step-by-step explanation:

In normal distribution, the outlier is more than e ≈ 2.72 standard deviations above quartile 3, and e standard deviations below quartile 1. These quartiles are divisions that make up what is known as the innerquartile range(IQR). Which defines the variability of a data set given by IQR = Q3-Q1.

Given that the mean of this data is 50, and the standard deviation is 8.

Our outliers are anything less than 26, and anything greater than 74. Since outliers are anything outside the mean plus and minus the standard deviation times 3

[tex] outliers :/ = :/ mean :/ \pm [/tex]

Jenny wants to buy a new dress for her first school dance she barrows $25.63 from her sister to help pay for the dress then Jenny earns $16.33 helping her dad organize his home office if she gives all the earnings to her sister Jenny will still owe her sister $

Answers

Answer:

Jenny will owe her sister $9.30

Step-by-step explanation:

Subtract the money she earned from her dad from what she borrowed from her sister. $25.63-$16.33=$9.30 :)

What is |2(-7.5)| ?​

Answers

Answer:

15

Step-by-step explanation:

sorry if this is wrong :)

The meaning of this annotation: "| |" is Absolute value.

It is important to note that the absolute value of a negative number = a positive number.

Solving for : |2(-7.5)|

Step 1: Expand the bracket

|2(-7.5)| = |2 x (-7.5)|

= |-15|

Step 2: The absolute value of  |-15| is :

|-15| = 15

Therefore, |2(-7.5)| = 15

To learn more, visit the link below:

brainly.com/question/17291634

1 2/3 + 4 1/3 equals?

Answers

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

M Is the midpoint of AB. If AB = 3x +14, and AM = 2x-1, find x and MB.​

Answers

Answers:

x = 16

MB = 31

==================================================

Work Shown:

M is the midpoint of AB

This means AM is half as long as AB and AM = MB

Put another way, AB is twice as long as AM

AB = 2*AM

3x+14 = 2*(2x-1)

3x+14 = 4x-2

14+2 = 4x-3x

16 = x

x = 16

AM = MB

MB = AM

MB = 2x-1

MB = 2*16-1

MB = 32-1

MB = 31

Divide (5.6*10^15)by(6.4*10^2)and in scientific notation

Answers

Answer:

3.584 ×[tex]10^{18}[/tex]

find the value of b-7 when b=18

would i just subtract 18-7??

Answers

Answer:

yes

18-7=11

hope it will help.

From the sum of 3x +4y -3xy and 5x +3y -2xy subtract the sum of 2x +y – 3xy and 10x -9y -8xy

Answers

Answer:

5x-1y-11y

Step-by-step explanation:

3x+4y-3xy+5x+3y-2xy-2x+y-3xy+10x-9y-8xy

2x+5x+4y+3y-3xy-2xy-2x+10x+y-9y-3xy-8xy

7x+7y-5xy-12x-8y-11xy

7x-12x+7y-8y-11xy

-5x-1y-11xy

HELP! DUE TONIGHT!! Also, I need an explanation (if you can its alright if not) so I can also understand it for the test too.

What is the value of x?

Answers

Answer:

The value of x in the problem is 1.

HELP 100 POINTS PLEASE

Answers

w o w 100 points! t h a n k s :D

Answer:

Done

Step-by-step explanation:

A.

C.

G.

what's 4 divided by 142.09 in long division

Answers

Answer: 35.522

Step-by-step explanation:

Answer:

35.5225

Step-by-step explanation:

4/142.09

look at each place starting in the hundredth place

how many times does 4 go into 14, 3 times

subtract the 12 from th 14 and you get a remainder of 2

drag the 2 down and you get 22

4 goes into 22 5 times

22-20=2

so on and so on

4/142.09

14-12=22 (3 times)

22-20=2 (5 times)

20-20=0 (5 times)

09-8=1 (2 times)

10-8=2 (2 times)

20-20=0 (5 times)

Thats as best as I can explain it, sorry if its confusing

Which equation best represents the linear function graphed below? CAN YOU BE REALLY QUICKLY THIS IS A MAJOR GRADE AND I ONLY HAVE 90 MINUTES

Answers

Answer:

y+1= 1/4(x-4)

Step-by-step explanation:

y+1 = 1/4(x-4)

y+1 = 1/4x-1

y = 1/4x -2 -which is the equation of the line

Given the ordered pair P, determine the requested sin, cos, or tan of angle . P(4, 5) cos = 5/4 4/5 (5√41)/41 (4√41)/41

Answers

Answer:

5 over 4 is 2/12 and if cos= the number of P then the vaul of the number would go up

-by-step explanation:

[tex]5\sqrt{x41} = 6 + the other number would be[/tex]

what is f(1) its for my math assignment

Answers

F(x) is really x= a number

I think so hope it helps

-1 = square root 5x – 9-X

Answers

10 is the answer.. i think

Find the slope of (1,-2),(-2,2

Answers

Answer:

i think it is rise run :)

Step-by-step explanation:

Answer: Should be -4/3 or 4/-3



Explanation:

To gather data for a statistics project, a student asked 10 friends how many hours of sleep they got on the previous night. The data are shown in the following list.

Answers

Answer:

3

Step-by-step explanation:

INTERQUARTILE RANGE (IQR) = Q3 - Q1

Rearranging the data: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9

Q3 = 0.75(n+1)th term

Q3 = 0.75(10 + 1) th term

Q3 = 0.75(11)th term = 8.25th term

Taking the 8th term = 8

Q1 = 0.25(11)th term = 2.75th

Taking the average of the 8th and 9th term:

(5 + 5) / 2 = 10/2 = 5

Q3 - Q1 = (8 - 5) = 3


Jimmy practices hitting baseballs every day. His first time at bat, the baseball goes 10 feet. For every day he
practices, the baseball goes 6 feet farther. Write an equation to describe this situation.

Answers

Answer:

I think it is 10 + (6x)

Step-by-step explanation:

because he starts at ten and every day it adds 6 and x represents the number of days

write each number in word form and short form
9) 543,698
10) 45,987,159.9​

Answers

Answer:

9) five hundred and forty three thousand, six hundred and ninety-eight

500,000 + 40,00+ 3,000+ 600+ 90+ 8 = 543,698

10)forty-five million nine hundred eighty-seven thousand one hundred fifty-nine and nine tenths

40,000,000 + 5,000,000 + 900,000 + 80,000 + 7,000 + 100 + 50 + 9 + 0.9 = 45,987,159.9

What is Y?
8.4=y-4.6

Answers

Answer:

13

Step-by-step explanation:

8.4 = 13-4.6

8.4 = 8.4

Answer: y=13

Step-by-step explanation:

3. Corbett’s sold 3 more footballs than basketballs on Saturday. In total, they sold 27 balls. How many of each kind were sold?

4. A hamburger has twice as many calories as a bowl of soup. Together they have 738 calories. How many calories are in each?

5. Carmen’s golf score was 6 strokes less than Lisa’s. Their two scores totalled 168. What was each girl’s score?

6. The sum of two consecutive numbers is 191. What are the two numbers?

Answers

Answer:

3.

let basketballs be x

and footballs will be 3 + x

3 + x + x = 27

2x = 27 - 3

2x = 24

x = 12

basketballs were 12 and footballs 15

4.bowl of soup x

hamburger 2x

2x + x = 738

3x = 738

x = 246

bowl of soup 246 calories

hamburger 492 calories

5. lisa x

carmen x - 6

x - 6 + x = 168

2x = 174

x = 87

lisa 87 strokes and carmen 81 strokes

6. first number x

second number x + 1

x + x + 1 = 191

2x = 190

x = 95

first number is 95 and second number is 96

What value of x satisfies the system of equations below?

x = 8 – 2y

x + 3y = 12



A.
4

B.
0

C.
16

D.
5

Answers

Answer:

I think it is B) 0

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

y = 3x-2
slope
y-intercept =

Answers

Answer:

The slope is 3 and the y-intercept is -2

Step-by-step explanation:

The slope will always be the point by the x and the y-intercept is where the line crosses the y axis.

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