Mathematics High School

What is the solution to the following system of linear equations?
Y=-31-9
2x + 3y = -13

A. (-3,-2)
B. (-3,0)
C. (2,3)
D. (-2,-3)

Answers

Answer 1

Answer:

x=107/2, y=-40. (107/2, -40).

Step-by-step explanation:

y=-31-9=-40

2x+3(-40)=-13

2x-120=-13

2x=-13+120

2x=107

x=107/2

Related Questions

At what rate has she been making deposits to her savings?

Answers

Answer:

20 dollars per month

Step-by-step explanation:

85 = 25 + x3

60 = x3

20 = x

please help meeeeee

A line passes through the origin, (-1, 1), and (4, n). Find the value of n.
N =​

Answers

Answer:

-4

Step-by-step explanation:

find the slope:

[tex]\frac{1-0}{-1-0}= \frac{1}{-1} =-1[/tex]

substitute:

y= 4(-1)

y=-4

(4,-4)

Find the solutions of the quadratic equation 3x^2 – 2x +4= 0.

Answers

Answer:

C. x =(1±i√11)/3

Step-by-step explanation:

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=3, b=−2, and c=4 into the quadratic formula and solve for x.

2±√(−2)²−4⋅(3⋅4)2⋅3

Simplify.

x=(1±i√11)3

What is the value of a?

Answers

Answer:

relationship between hypotenuse and perpendicular is given by sin angle

sin60=p/h

√3/2=a/16

√3/2×16=a

8√3=a

option C is your answer

Gloria drew a trapezoid on a coordinate grid. She wants to use a transformation that will change the
size of the trapezoid but not the orientation. Which transformation should she use?
a. rotation
b. reflection
c. translation
d. dilation
Fa and c only
Gb and d only
Hd only
J None of the above

Answers

She should use None of the above
d. Dialation.

Dialations only make the shape larger or smaller. It does not change the general shape nor move the shape up/down/left/right.

Averigua: Cuantos habitantes tiene tu localidad y cuantos tu provincia Calcula A qué porcentaje de la población del Ecuador con responder xf 13 puntos y responden esta pregunta porfa ❤❤❤❤❤❤❤✨​

Answers

Answer:

La Provincia del Guayas comprime el 25.1% de la población de Ecuador. A su vez, la Ciudad de Guayaquil tiene una población igual al 15.58% de la población ecuatoriana.

Step-by-step explanation:

Dado que vivo en la Provincia del Guayas, y en la ciudad de Guayaquil, los datos de población solicitados son los siguientes:

-Provincia del Guayas: 4.387.434 habitantes, es decir, un 25.1% del total de la población de Ecuador, que es de 17.475.570 habitantes, conforme surge del siguiente calculo:

17.475.570 = 100

4.387.434 = X

4.387.434 x 100 / 17.475.570 = X

438.743.400 / 17.475.570 = X

25,10 = X

-Ciudad de Guayaquil: 2.723.665 habitantes, es decir, un 15.58% del total de la población de Ecuador, conforme surge del siguiente cálculo:

17.475.570 = 100

2.723.665 = X

2.723.665 x 100 / 17.475.570 = X

272.366.500 / 17.475.570 = X

15.58 = X

20 points
Are the first too correct?
And what would the last one be?

Answers

Answer:

a) cos

b) sin

c) tan maybe?

Step-by-step explanation:

Find the area of the composite shape below.
help to get sum coin

Answers

Answer:

Composite Area = 1105.94

Step-by-step explanation:

Remark

The two semi circles at each end make an entire circle with radius 11. The width of the central rectangle = the diameter of the circle. The area should be able to be found.

Width

2*radius = width

width = 2 * 11

width = 22

Area of the circle

Area = pi * r^2

r = 11

Area = 3.14 * 11^2

Area = 3.14 * 121

Area = 379.94

Area of the rectangle

Area = L * W

L = 33

W = 22

Area = 33 * 22

Area = 726

Total Area

Total Area = Area of Rectangle + Area of the Circle

Total Area = 726 + 379.94 = 1105.94

Someone help ASAP:

Slope = 4 ; Point (-2,1)

Answers

Whats the q tho?? The formula for slope is y=mx+b M= slope b= Y intercept whatever you’re looking for hope this helped also slope= rise over run. Take 2 points and its y/x - y/x to find m

A story owner wants to prepare 100 lb of a candy mix that she will she for $1.36 per lb. She mixes 20 lb of jelly beans that cost 20 cents per lb with sugar candies. How much does 1 lb of sugar candies cost?

Answers

Answer:

1.65

Step-by-step explanation:

100 pounds of the mixture = 1.36 * 100 = 136 dollars.

She uses 20 pounds of jelly beans that cost

20 * .20   = 4.00

136 - 4 = 132 dollars left for 80 pounds of sugar candies.

80 pounds = 132 pounds of sugar candies.

1 pound =  x

80/1 = 132 / x             Cross multiply

80x = 132

x = 132 / 80

x = 1.65 / per pound

Please help.
Is algebra.

Answers

Answer:

7 acd 8 use mathpapa or desmos graphing calculator

Step-by-step explanation:

7 acd 8 use mathpapa or desmos graphing calculator

Write the decimal 0.532 as a percent.

a. 53.2%
b. 532%
C. 5.32%
d. 0.532%

Answers

I believe it would be a.53.2%
The answer would be 53.2% because 1.0 is 100%

Evaluate 8a+3b-10+c2 when a=2, b=5 and c=4​

Answers

Answer:

8(2)+3(5)-10+4(2)

16+15 -10+8

=31-10+8

=21+8=29

8a+3b-10+c2
8(2)+3(5)-10+4(2)
16+15-10+8
31-18
13

Does this triangle have a hypotenuse about 38 feet long

Answers

the hypotenuse is 37.9, so 38 would be the answer if rounded

Is this a proportional graph?

Answers

yes that graph is a proportional graph

5x + 7 = 2x - 8 can anyone say how to solve please ​

Answers

Answer:

x = - 5

Step-by-step explanation:

Given

5x + 7 = 2x - 8 ( subtract 2x from both sides )

3x + 7 = - 8 ( subtract 7 from both sides )

3x = - 15 ( divide both sides by 3 )

x = - 5

4 - Зc — 5c2
write the polynomial in standard form.

Answers

-5c^2-3c+4 This polynomial is in standard form, now, and the leading coefficient is 5, because it is the coefficient of the first term. Degree is 2, due to -5c^2.

Write 51/7 in radical form

Answers

7 2/7 I think not sure

ONLY GIVING BRAINLYEST IF YOU ANSWER QUICKLY AND CORRECTLY
Which expression is equal to 3x + (f + 6g)?

a
3xf + 6g

b
3x + 6fg

c
(3x + f) ⋅ 6g

d
(3x + f) + 6g

Answers

Answer:

This is the correct answer

Step-by-step explanation:

3x+f+6g

The length of a rectangle is 36
centmeters and the width is 9
centimeters. A similar rectangle has
a width of 3 centimeters.
what is
the length of the decond triangle?

Answers

Answer: 12cm

Step-by-step explanation:

They are similar, so we can set an equation of:

the ratio of length and width of the big triangle equal to the ratio of length and width of the small(second) triangle.

36:9 = x:3

36/9 = x/3

9x = 3(36)           by use the cross multiply

9x = 108

x = 12 cm

I need some questions for grade 8 for algebraic manipulation
The questions in which we need to put formulas and solve them

Answers

Answer:

x + y + z + 13 ÷ m has

A. one term

B. two term

C. three term

D. four term

-2x + 5 + 10x - 9

3(x + 7) + 2(-x + 4) + 5x

6+3x-5y+7x-6y+2

2x - 8 = -x + 4

solve the following equation in substitution method: y=x-2 and x+y=4​

Answers

Answer:

Step-by-step explanation:

y=x-2

x+(x-2)=4

2x-2=4

2x=6

x=3

Find the perimeter of the figure.

Answers

Answer:

87

Step-by-step explanation:

So there are 5 numbers listed. You can obviously see the two small sides are 9. They are the same size. Then you have the three 9s on the top. This is important. So far we are at 75ft. The complication comes in at what is the unknown side. Well if you see the three 9s on top. Two are going horizontal along with the 30. So 9+9 is 18. 30-18 is 12. So that side is 12. Answer is 87.

Hope this helps

please help i will give brainly

Answers

Answer:

Step-by-step explanation:

Lo lamento no se la respuesta espero que la

encuentres

Answer:

1. $9.86

2. $531.51

3. $49.81

4. $6.03

5. $25.13

Step-by-step explanation:

1. 15% of 65.75 = 9.8625 about 9.86 (asks only for the amount for the tip)

2. 18% of 450.50 = 81.01

450.50 + 81.01 = $531.51(Asks for total; the price of the food including tip).

3. 25% of 39.85 = 9.9625

39.85 + 9.9625 = 49.8125 about 49.81 (asks for total; the price of the food including tip).

4. 12% of 50.25 = 6.03 (Asks only for the amount of the tip)

5. 20% of 125.67 = 25.13400 about 25.13 (Only asks the amount of the tip)

Ace Carlos

Why is (a+b)(a-b) = a2-b2

Answers

Answer:

see explanation

Step-by-step explanation:

(a + b)(a - b)

Each term in the second factor is multiplied by each term in the first factor, that is

a(a - b) + b(a - b) ← distribute parenthesis

= a² - ab + ab - b² ← collect like terms

= a² - b²

This is a standard algebraic identity, called the difference of squares

Diego and Jada are both trying to write an expression with fewer terms that is equivalent to
7a + 5b - 3a + 4b

Jada thinks 10a - 1b is equivalent Diego thinks 4a + 9b is equivalent

Answers

Answer: Diego, 4a + 9b is equivalent

Step-by-step explanation:

7a + 5b - 3a + 4b

= (7a - 3a) + (5b + 4b)           We rerange the variables, and put them together with (), which make it more clear to solve.

= 4a + 9b

A soccer ball is kicked at a velocity of 25 meters per second. The following table shows the horizontal distance (in meters) at different angles of elevation (in degrees), ignoring wind resistance.

Angle of Elevation Distance Traveled
15 31.9
25 48.8
30 55.5
45 63.8
50 62.8
55 59.9
60 55.5
70 41.0
Using a quadratic regression calculator, determine the values of a, b, and c that can be used to write a quadratic function that provides a reasonable fit to the set of data. What is the value of c?

A). 8.5411
B). -8.5411
C). 85.411
D). -85.411

Answers

The answer is D hope this helps your very welcome

Answer:

-8.5411

Step-by-step explanation:

I just did this with the desmos calculator !

If Jake has 132 braincells, and Austin takes 131 away, how many does Jake have after getting three back and losing three.

Answers

Answer:

1

Step-by-step explanation:

132-131=1

1+3=4

4-3=1

poor jake.....

Answer:

isn't it 1

Step-by-step explanation:

coz 132 - 131 = 1

1 + 3 = 4

4 - 3 = 1

A bag contains 2 beads Are blue 1 of the bead is green 3 of the bead is purple

Answers

Answer:

hope I'm right good luck

Step-by-step explanation:

2x1x3=6 so the rest is 6 which equals 12

Answer:

Step-by-step explanation:

Well there are 12 beads.

2+1+3=6 and that means there are 6 red beads.

Then 6 red beads+3 Purple beads=9 Beads and 9/12 is the same as 3/4 meaning the probability of picking a purple/red bead IS 3/4

A lap around a school track equals
of a mile. Caleb runs 4 laps on Monday and 6 laps on Wednesday.
How many more miles does Caleb need to run Thursday if he wants to run 6 miles total?

A. 1 1/2
B. 2 1/2
C. 3 1/2
D. 4 1/2

Answers

B if you need an explain I can do it
B because that is the answer boss
Other Questions
8. Write an essay on "The use of Modern Technology in Education"in about 200 words.[8] Make a brief summary of the Marching Foward Documentary Solve the inequality and graph the solution.5w82please send steps on how to do it at a graph Please help I will reward brainliest Exercise 177 Kirk Company issued a $3,500,000, 10%, 10-year mortgage note payable to finance the construction of a building at December 31, 2020. The terms provide for annual installment payments of $569,609. Prepare the entry to record: (a) the mortgage loan on December 31, 2020. (b) the first installment payment. (Credit account titles are automatically indented when amount is entered. Do not indent manually.) Account Titles and Explanation Debit Credit (a) (b) Click if you would like to Show Work for this question: Open Show Work A researcher notices that atoms of an element x are releasing energy. Why does this happen? Geometry geometry geometry Hollister Shirt $105 % off plus 10 sales tax What would be the sale price of this shirt? how did heran Cortes affect the Aztec empire Please hurry Use the excerpt from The Goose and the Golden Egg to answer the question.There was once a Countryman who possessed the most wonderful Goose you can imagine, for every day when he visited the nest, the Goose had laid a beautiful, glittering, golden egg.Which word or phrase from the excerpt is a transition?(1 point)There was onceyou can imaginehad laidevery day What is the length of the dotted line in the diagram below? Round to the nearestenth. g the following statements as they apply to gas chromatography. Decide if each is true or false. The technique referred to as gas chromatography is actually gas-liquid chromatography since the stationary phase is a liquid adsorbed on the surface of an inert solid. To be separated using GC, analytes must be volatile. An air peak is commonly used to determine the dead time when using a TCD detector. An FID is insensitive to non-combustible gases such as water and carbon dioxide. A column temperature equal to or slightly above the average boiling point of the sample components results in a reasonable elution time. Two students started at the coordinate (0,0). Student Awalked 7 units east and 5 units south. Student B walked4 units west and 1 unit south. How many units apart arethe students? how a healthy diet can be achieved using the foods important to any culture -5forf(x) =- 4 < x < 11 - X 5for The perimeter is expressed in the following units(a) cm (b) cm2(c) cm3(d) m2 Between which two consecutive years did Kleya's income increase the most?Kieya's Annual Income2007200620052004200320022001$15,000$10,000$5,000$55,000$50,000$45,000$40,000$35,000$30,000$25,000$20,000room2005 - 20062002 - 20032004 - 20052001 - 2002Please help me 7) Which battle ended the Persian Wars? *Battle of MarathonBattle of SalamisBattle of ThermopylaeBattle of Plataea The total amount kate had left is 4.20$ after buying 7 pencils at p cents. Please explain how do I answer this question and find the value of p In Wuthering Heights, what would have Cathy and Heathcliff's marriage been like if they had managed to marry?