Mathematics High School

Solve equations by using elimination
-4+5y= 13
X-5y=21
( , )

Answers

Answer 1

Answer:

y=17/5 ,x= 38

Step-by-step explanation:

-4+5y =13 add 4 both side

4-4+5y=13+4

5y=17

5y/5=17/5 y=17/5

x-5y=21

x-5(17/5)=21

x-17=21

x=21+17= 38

Related Questions

What triangle is congruent to KLM? A. GJH B. CBA C. FDE D. None

Answers

Option A is correct.

The triangle GJH is congruent to the triangle KLM. The correct option is A.

What is congruency?

In geometry, two figures or objects are said to be congruent if their shapes and sizes match, or if one is the mirror image of the other. The meaning of congruency is that the two shapes are similar as well as equal in size.

Given that, on a coordinate plane, there are different triangles.

The triangle GJH is congruent to the triangle KLM because the sides of the triangle are exactly equal.

KL = HJ

KM = HG

ML = JH

Therefore, the triangle GJH is congruent to the triangle KLM. The correct option is A.

To know more about congruency follow

brainly.com/question/2938476

#SPJ5

1- (2x+4)= 4x+5 . What is the correct solution ??

Answers

Answer:

x=4

Step-by-step explanation:

We move all terms to the left:

1-(2x+4)-(-4x+5)=0

We get rid of parentheses

-2x+4x-4-5+1=0

We add all the numbers together, and all the variables

2x-8=0

We move all terms containing x to the left, all other terms to the right

2x=8

x=8/2

x=4

please answer both of these questions

Answers

Answer:

I go for I and IV....................

Raina makes fruit punch with 24.2 ounces of apple juice and 18.4 ounces of pineapple juice. He splits the fruit punch equally into 6 glasses.


How much fruit punch is in each glass

Answers

7.1 ounces in each glass
24.2 + 18.4
42.6

42.6/6
7.1

Each glass has 7.1 ounces of fruit punch.

What is the slope in simplest form?

Answers

Answer:

-1/2

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

We are given the points (1, 4) and (3, 3).

3-4/3-1

-1/2

Best of Luck!

Answer:

the slope equation is y2-y1/x2-x1

the points given are (1,4) and (3,3)

plug it into the equation and you get:

3-4/3-1

-1/2 is your answer. I hope this helps :)

Find the length of arc AB. Use 3.14 for T,
Round to the nearest tenth.
20
1 ? ]cm
Please help

Answers

Answer:

12.4 cm

Step-by-step explanation:

Length of an arc AB = [tex] \frac{\theta}{360} \times 2 \pi r [/tex]

Where,

[tex] \theta = 90 [/tex]

[tex] \pi = 90 [/tex]

r = 7.9 cm

Plug in the values

Length of an arc AB = [tex] \frac{90}{360} \times 2 \times 3.14 \times 7.9 [/tex]

[tex] = \frac{90 \times 2 \times 3.14 \times 7.9}{360} [/tex]

Length of an arc AB = 12.4 cm (nearest tenth)

Answer:

Step-by-step explanation:

answer is 12.4cm !

Yo can anybody please help me with this math question please

Answers

Answer:

the answer should 60°

Step-by-step explanation:

if look at angle pq and rq the measure of the angle is 60° if u were to spin that angle to a u should get the same measurement

A coffee shop worker is putting 18 pounds of coffee into 0.25-pound bags. How many small bags of coffee can the worker make?

Answers

Answer:

72 lb bags

Step-by-step explanation:

18 / 0.25 = 72 bags :D

The answer is 72 bags. How you solve the problem is you take your first value (which is present within your problem) and divide that number by your second value (also present within your problem).

So divide 18 by 0.25.

18 / 0.25 = 72

If this isn’t correct, then I’d suggestion multiplying the values. For example:

0.25 * 18 = 4.5

write sin x° in terms of the cosine

Answers

Answer:

cos[tex](x-\frac{\pi}{2})[/tex]

Step-by-step explanation:

If you insists that sine and cosine should be of the same angle use Pythagorean identity. Otherwise you can use identity sin(x) = cos[tex](x-\frac{\pi}{2})[/tex]

Hope this helps! :)

please help me i don't get it

Answers

angle 2 is 40 degrees since its a right angle and 90-50=40

5
Find the value of x. Show your work.

Answers

Answer:

x = 10

Step-by-step explanation:

well all three angles would equal 180 in a triangle

6x - 6 + 7x + 1 + 55 = 180

combine terms

13x + 50 = 180

13x = 130

x = 10

I need help asap pleaseeee

Answers

Answer: B,C

Step-by-step explanation:

Elevator A: -4x+16

Elevator B: -3x +16

IfA=5 and B = 10, what is A* B equal to?
O Two
O 15
O 50
O Five

Answers

Answer:

50

Step-by-step explanation:

5x10 = 50

Solve q + 1/7 = 1/5. Express your answer in the simplest form.

Answers

Answer:

2/35

Step-by-step explanation:

original equation:q+1/7=1/5

subtract both sides by 1/7

q=1/5-1/7

q=2/35

(give me brainly pls)

Please help fast!! 15 points!! Will give brainliest!!

Which inequality is shown in this graph?

a. y ≥ 3x + 3
b. y ≤ -3x + 3
c. y ≤ 3x + 3
d. y ≥ -3x + 3

Answers

Answer:

B

Step-by-step explanation:

The four members of the "Fantastic Four" made 40 cookies each for the bake sale. They know that 35% of their cookies are chocolate chip.

How many chocolate chip cookies were made?

Answers

Answer:

54% I think and if im wrong im so sorry.

Step-by-step explanation:

What is the equation of this line in slope intercept form? 2x+y=−19

y=−2x−19

y=2x+19

y=2x−19

y=−2x+19

Please help

Answers

Isolate y by subtracting 2x from both sides
Your answer is: y= -2x-19

The graph of p(x) = 4(x - 1)2+8 will be translated 10 units down, producing the graph of g(x).
Which equation represents the new function, 9(x)

Answers

I’m pretty sure it’s g(x) = 4(x-1)

Please y'all I really need help finding out x I don't have a lot of points left.

Answers

Answer:

x = 1/2

Step-by-step explanation:

[tex] \frac{4}{7} x = \frac{2}{7} \\ \\ x = \frac{ \cancel2}{ \cancel7} \times \frac{ \cancel7}{ \cancel4 \: \: 2} \\ \\ x = \frac{1}{2} [/tex]

(Need help ASAP)
How many solutions does the equation have:
3x - 5 = -5 + 3x

Answers

Answer:

Infinitely many

Step-by-step explanation:

Add 5 to both sides and subtract 3x on both sides. that results in 0=0. if the numbers are the same, than its infinitely many.

Answer:

0=0

Step-by-step explanation:

3x-5=-5+3x

0=0

What is the equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4)?
O x=-5
O X= 4
O y=-5
O y = 4

Answers

Answer:

The equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4) is x=-5

Option A is correct.

Step-by-step explanation:

We need to find equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4)

We need a line parallel to x=-2 or x+2=0 it should be of form x+k=0

We need to find k, by putting value of x=-5 as given in question the point(-5,4)

-5+k=0

k=5

So, the equation of line will be found by putting k=5:

x+k=0

x+5=0

x=-5

So, the equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4) is x=-5

Option A is correct.

Skies travel charges two-fifty for a plane ticket and $28 per day for rental car. For the same trip, r&r travels charges 305 for a plane ticket and 23 per day for car rental. What is the minimum number of days in martin's vacation should be or r&r travel to be a better deal for him?

Answers

Given :

Skies travel charges two-fifty for a plane ticket and $28 per day for rental car.

For the same trip, r&r travels charges 305 for a plane ticket and 23 per day for car rental.

To Find :

The minimum number of days in martin's vacation should be or r&r travel to be a better deal for him.

Solution :

Let, minimum number of days are x.

So, cost charged by Skies travel is, [tex]c_1 = 25+28x[/tex]

Cost charged by r&r travels is, [tex]c_2 = 305 + 23x[/tex]

r&r should be better deal when :

[tex]c_2 < c_1\\\\305 + 23x <25 + 28x\\\\5x >280\\\\x>56[/tex]

So, for better deal at r&r minimum number of vacation days is 57.

Hence, this is the required solution.

The formula for the area of a triangle is A = W. Shannon is trying to find the
base of her triangle and she is given the height and the Area. To help her work
backwards, solve the formula for the base (b).

Answers

Answer:

Did u find the answer for this

Step-by-step explanation:

Help pls lol

-4a + 16

Answers

Answer:

-4(a - 4)

Step-by-step explanation:

Two very good apps that I use for Algebra is (ill put it in the comments)

hope this helps!!!

it won't let me put the link. im sorry.

Answer:

12

Step-by-step explanation:

12

Solve for A
Exact (no rounding, no calculator needed)

0 = A^2 + 13A + 36

Answers

Answer:

-4 or -9

Step-by-step explanation:

-a^2-13a-36=0

(-a-4)(a+9)=0

-a-4=0

a+9=0

a= -4, -9

ana runs 3/4 miles in 6 mins. assuming she runs at a consistent rate, what is her speed in hours?

Answers

Answer:

7.5 mph

Step-by-step explanation:

i hope this is what you needed , if so, please mark brainliest

Answer:

7.5 miles per hour

Step-by-step explanation:

An hour=60 mins

6×10=60

3/4×10=7.5

If I can read 54 pages in 3 days, how many can I read in 1 day?

Answers

Answer:

18

Step-by-step explanation:

Step 1)

54 ÷ 3 = 18

Answer:

54/3

Step-by-step explanation:

we can use crisscross multiple

A caterer needs to buy 21 pounds of pasta to cater a wedding. At a store, 8 pounds of pasta cost $12. Hom much will the caterer pay for the pasta here?

All I know is how to find the unit rate but I can't figure that out.

Answers

Answer:

$31.50

Step-by-step explanation:

First you need to find out how much a single pound costs($12/8 lbs). That ends up equaling $1.50, so multiply that by 21 and you got the answer. :)

Which table is a probability distribution table?

Answers

Answer:

Step-by-step explanation:

Table 3.

Please, Solve for Y

3x - y = -13

(Correct answer gets brainliest)

Answers

Answer:

y = 13 +3x

i answered in the comments, bc it wasnt lettin me actually answer

Step-by-step explanation:

3x - y = - 13

-3x -3x

-y = -13 - 3x

divide everything by -1

y = 13 + 3x

hope this helpsss!!!

Other Questions
11Find the arc length of the semicircle.Either enter an exact answer in terms of toruse 3.14 form and enter your answer as a decimalunitsShow Calculator You collect data on the color of cars driven by students in your statistics class, and want to display this information graphically. Which is the better choice for this data, a bar graph or a histogram? Explain why the electron configuration of 2-3-1 represents an atom in an excited state? 50 pointsSAQ #1"When in the course of human events, it becomes necessary for one people to dissolve the political bands whichhave connected them with another, and to assume among the powers of the earth the separate and equal station towhich the laws of Nature and of Nature's God entitle them a decent respect to the opinions of mankind requiresthat they should declare the causes which impelthem to the separationThe history of the present King of Great Britain Is a history of repeated injuries and usurpations, all having indirect object the establishment of an absolute Tyranny over these States To prove this, let Facts be submitted to acandid world"He has refused to pass Laws for the accommodation of large districts of people, unless those people wouldrelinquish the right of Representation in the Legislature, a night inestimable to them and formidable to tyrants onlyHe has dissolved Representative Houses repeatedly for opposing with manly furness his invasions on the nightsof the peopleHe has kept among us in times of peace Standing Armies without the consent of our legislaturesUnited States Declaration of Independence 1776Ung the excerpt ansat al (c). briefly describe the historical situation in which the Declaration of Independence was writtendescribe one purpose of the declaration of independence describe one piece of evidence used in the declaration of independence to support its argument Are the atoms really "sharing" electrons Most of the elements in the periodic table can be described as:A. metalloidsB. halogensc. non-metalsD. metals HELP WILL GIVE BRAINIEST AND 20 POINTS! DONT ANSWER IF U DONT KNOW ( answers must be in own words dont copy and paste )3.What does the changing the Aperture do when taking a photo? *4.What effect can you get from using a slow shutter speed? *5.What effect can you create by using a quick shutter speed? * The graph shows the amount of money paid when purchasing bags of candy at the zoo: A graph is shown. The x-axis is labeled from 0 to 9. The y-axis is labeled from 0 to 10. Four points are shown on the graph on ordered pairs 0, 0 and 1, 2 and 2, 4 and 3, 6. These points are joined by a line. The label on the x-axis is Bags of candy. The title on the y-axis is Total cost in dollars. What is the cost of one bag of candy? $2 $4 $0 $6 Think of the reading Domingo, dia 18 de febrero and choose s if the statement is correct. Choose no if it is not.El Palacio de Bellas Artes tiene tambin varios pisos con exposiciones de pinturas.a) sib) no pls help!!! will give brainy!!My favorite room in the house is the bedroom because I love to study.in spanish A football player runs due South for 80 yards then cuts up the field due East for a distance of 45 yards before running into the end zone. What is the total displacement of the player? I need help please :) :) How long did it take to build most medieval Cathedrals? what kind of president was andrew jackson? please help Logistics and supply are closely interrelated functions.O TrueO False 2. In the complication of the plot of a story,a. the main character is introduced.b. the main character has an accident.c. the main character encounters an obstacle.d. the outcome is revealed. Which statement best evaluates the reasoning in the passage?And this is no small distinction. It is the whole distinction in a man. You cannot serve two masters; you must serve one or the other. If your work is first with you, and your fee second, work is your master.The reasoning is not sound; the author relies on name-calling.The argument is not sound; the author uses an either-or argument.The argument is not sound; the author uses circular logic.The argument is not sound; the author relies on overgeneralization. PLEASE PEOPLE WHO DO PYTHON PLEASE HELP ITS DUE IN THE NIGHTif you do not know the answer please do not answer otherwise I will report.the answer that works will get brainliest Please help me debug this code HELP ME PLEASE ..... Discuss an example of evidence astronomers have learned about the universe using gamma rays, x-rays, and/or UV rays mounted on satellites. What impact has this information had on humans? What impact might this information have on humans in the future?