8x+y=5 and x+y=12 , using substitution and elimination

Answers

Answer 1

Answer:

x=−1,y=13

Step-by-step explanation:

Answer 2

Answer:

x = -1 and y = 13 Please Mark Brainliest

Step-by-step explanation:


Related Questions

hi pls help me ty in advance​

Answers

A right angle = 90 degrees

A round angle = 360 degrees


1. 3 x 90 = 270 degrees

2. 4 x 90 = 360 degrees

3. 1 1/2 x 90 = 135 degrees

4. 2 1/3 x 90 = 210 degrees

5. 2/9 x 360 = 80 degrees

6. 3 3/8 x 360 = 1,215 degrees

What is the lcm of 7 and 21​

Answers

Answer:

21

Step-by-step explanation:

7x3=21

21x1=21

EASY

Will mark brainliest!

Answers

Note the rules

Q1=All positiveQ2= Sine and cosec positiveQ3=tan and cot positiveQ4=cos and sec positive

The answer is option B


Your grandfather is a coin collector. He has 50 coins of gold or silver separated into 7
bags. Gold coins are in packs of 6 and silver coins are in packs of 8. How many bags of
each coin does he have?
4 bags of gold and 3 bags of silver
2 bags of gold and 5 bags of silver
3 bags of gold and 4 bags of silver
5 bags of gold and 2 bags of silver

Answers

Answer:

c

Step-by-step explanation:

a = 48 coins   4 x 6 = 24    3 x 8 = 24     24 + 24 = 48

b = 52 coins   2 x 6 = 12     5 x 8 = 40     40 + 12 = 52

c = 50 coins   3 x 6 =18      4 x 8 = 32      32 + 18 = 50   correct

d = 46 coins   5 x 6 = 30    2 x 8 = 16       30 + 16 = 46

What is the slope of the line passing through the points (11,-18) and (-1,-17)

Answers

Answer:1/-12=-0.08333

Step-by-step explanation:

-17- -18/-1 - 11

1/-12

The restaurant check is $54.50. Mary wants to leave a 20% tip for the server. What is the tip amount?


20 points, I'll give brainliest, SHOW YOUR WORK PLEASE :)

Answers

Answer:

$10.90

Step-by-step explanation:

Turn your 20% tip into a decimal (0.20) and multiply that by the overall check. $54.50 x 0.20 = $10.90

Question 7 Finally, select point D and move it around the circumference of circle A. Which type of polygon is formed by the line segments joining points A, B, and C?

Answers

Answer:

Regardless of where point D is located on the circle, a right triangle is formed between points A, B, and C. The right angle of the triangle is ∠ABC.

Step-by-step explanation:

PLATO

Answer:

Regardless of where point D is located on the circle, a right triangle is formed between points A, B, and C. The right angle of the triangle is ∠ABC.

Simplify the expression completely:

3(1+2(8-5))-(1+1)^2

Answers

Answer: 17

Step-by-step explanation:

PEMDAS or wutever your teacher taught u

3(1+2(8-5))-(1+1)^2

Solve from the most inner parenthesis

8 - 5 = 3

3 x 2 = 6

6 + 1 = 7

7 x 3 = 21

Next solve the other part

1+1 = 2

2^2 = 4

Now put these two together

21-4 = 17

Answer:

8

Step-by-step explanation:

Using PEMDAS to solve

Parentesis

Exponents

Multiplication

Division

Addition

Subtraction

:) hoped it helped

This figure has two intersecting lines and a ray. What is the value of x?
37°


108°


72°


19°

Answers

Answer:

The value of x is D. 37°

Step-by-step explanation:

No need for math on this one, the angle next to x is 71° and is significantly bigger, so the only answer could be 37°.

The value of x will be 37°.

What is Vertically opposite angles?

Vertically Opposite Angles are the angles opposite each other when two lines cross.

Given that;

This figure has two intersecting lines and a ray.

Now, By the definition of vertically opposite angles, we get;

x° + 71° = 108°

Then, Solve for x as;

x° + 71° = 108°

Subtract 71 both side;

x° + 71° - 71° = 108° - 71°

x° = 37°

Thus, The value of x will be 37°.

Learn more about the vertically opposite angles visit:

https://brainly.com/question/1673457

#SPJ2

eleven less than five times a number is 24. find the number

Answers

Answer:

7

Step-by-step explanation: please mark brainliest

(5*7)-11=24

5 to the 4th power times 10 to the 4th power

Answers

Answer:

6250000

Step-by-step explanation:

Answer:6250000

Step-by-step explanation:

Which letters in the word "GEOMETRY" have exactly one line of symmetry?
GEOMETRY

Answers

letters :- EMTY

There r only 4 letters in geometry which have one line of symmetry

The Anwser to it is E

One ninth of the height of an iceberg was above the surface of the water. The iceberg
extended to a depth of 75.8 m below the surface. What was the height of the iceberg above surface? Express your answer to nearest tenth of a meter.

With solution please and thank you!

Answers

The answer is 75.8 c

Lauren drew a tower using only similar quadrilaterals. Which statement about the quadrilaterals must be true?.

Answers

For Lauren's tower which he drew using only similar quadrilaterals the statement B is correct, which is the quadrilaterals are different shapes but the same size.

What is quadrilateral?

Quadrilateral is the plane shape which is closed polygon having which is made by using the four sides, four angles and four vertices.

The sum of all the interior angle in a quadrilateral is equal to 360 degrees.

The two quadrilateral are said to be a similar quadrilateral when the quadrilaterals are all the same size and shape.

Here, Lauren drew a tower using only similar quadrilaterals. Let's check all the statement about the quadrilaterals given as,

The quadrilaterals have corresponding angles that are congruent.The quadrilaterals are all the same size and shape.The quadrilaterals are different shapes but the same size.The quadrilaterals have corresponding sides that are congruent.

As for the similar quadrilaterals, quadrilaterals are all the same size and shape. Thus, the option B is the correct option.

Hence, for the Lauren's tower which he drew using only similar quadrilaterals the statement B is correct, which is the quadrilaterals are different shapes but the same size.

Learn more about the quadrilateral here;

https://brainly.com/question/16261621

A sum of 300 pounds into the ratio of 1:2:2. How much is the smallest share?

Answers

Answer:

60

Step-by-step explanation:

Summing the ratios gives 1+2+2=5

300/5 = 60

(1 x 60) + (2 x 60) + (2 x 60)

(60) + (120) + (120) = 300

Hence the least share is 60

The other two shares are equal which is 120

Plz help need this last question

Answers

Answer:

a = -√3/3

b = 2√3/3

Step-by-step explanation:

Finding the slope of the tangent at C  by finding the derivative:

x^2 + y^2 = 1

2x + 2y y' = 0

2y y' = -2x

y' = -2x / 2y = -x/y

So the slope = - 1/2 / √3/2

= -1/2 * 2/√3

= -1/√3

= -√3/3

Using the point-slope form of a straight line

y - y1 = m(x - x1)

y - √3/2 = -√3/3(x - 1/2)

y - √3/2 =  -√3/3 x +√3/6

y =  -√3/3 x + √3/6 +√3/2

y =  -√3/3 x + 4√3/6

y = -√3/3x +  2√3/3

Mr. Baker worked 42 hours and earned $504.00. How much did he make per hour

Answers

Answer:

The answer is 12 remainder 6 but if it is a decimal form question it is 12.6

Answer:

the answer s 12$

Step-by-step explanation:

because if you do 504 divided by 42 you get 12 and if you do it backwards

42x12 you will get 504

ABCD is a quadrilateral. Work out the length of CD. Give your answer to 3 significant figures

Answers

Check the picture below.

[tex]sin(35^o)=\cfrac{\stackrel{opposite}{12}}{\underset{hypotenuse}{BD}}\implies BD=\cfrac{12}{sin(35^o)} \\\\[-0.35em] ~\dotfill\\\\ \textit{Law of sines} \\\\ \cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\cfrac{sin(52^o)}{BD}=\cfrac{sin(102^o)}{CD}\implies CD=\cfrac{BD\cdot sin(102^o)}{sin(52^o)} \\\\\\ CD=\cfrac{\frac{12}{sin(35^o)}\cdot sin(102^o)}{sin(52^o)}\implies CD=\cfrac{12\cdot sin(102^o)}{sin(35^o)\cdot sin(52^o)}\implies CD\approx 26.0[/tex]

Which of the following numbers is between 5 and 10 on a number line? Select two that apply.

Answers

Answer:

it would be any number that is less that ten but greater than 5

Rodrigo needs a total of 3 pounds of vegetables for a stew. He already has 38 pound of onions and 13 pound of tomatoes. How many more pounds of vegetables does he need to buy?

Answers

Answer:

m needs 3 pounds of vegetables for a vegetable soup recipe. He already has 2/3 pound of carrots and 1/4 pound of celery.

Step-by-step explanation:

PLS HELP PLS PLS PLS

Answers

Answer:

Step-by-step explanation:

( x + 25 )° + ( 5x + 10 )° = ( 15x - 10 )°

6x + 35 = 15x - 10

9x = 45

x = 5

if the train that megan is riding covers 150 miles in 3 hours, how fast is the train traveling?

Answers

Speed = Distance / time

Speed = 150 miles / 3 hours

Speed = 50 miles per hour.

How did you decide whether to group this as a function, or not a function?
plz plz help

Answers

Answer:

This is a function because it passes the vertical line test

Step-by-step explanation:

If there are 13400 students at Rocky Valley College and 1/4
take speech, how many students take a speech at rocky valley college

Answers

Answer:

three thousand three hundred and fifty.3,350

Step-by-step explanation:

the question given was:1/4 take a speech, so how many?: one fourth, if you divide 13,400 by 4 its 3,350. that is one fourth  of 13,400. So, if you add 3,350 four times, it would be 13,400.

Hope this helped!<3

is (ab)c = a(cb). True or False

Answers

Answer:

true

Step-by-step explanation: You are multiplying all numbers (ab)*c is basically a*b*c and a(cb) is basically a*b*c. [gimme 5-star :)]

SOMEONE HELP ITS DUE TODAY PLEASE!!!

Answers

i believe the answer would be c, because you leave the base alone and work on the exponents first. when dividing terms with exponents you subtract the exponents, so the equation would be something like -9-(-12) which is the same as -9+12 which equals 3, so the answer should be c, 3^3. hope this helps!

Oil flows back and forth between a small and large tank. When oil is moving into the large tank, the flow rate is positive. When oil is moving into the small tank, the flow rate is negative. The large tank begins with 600 gallons of oil. The flow rate is recorded as –4 gallons per minute. After a period of 32 minutes, how much oil has been moved and to which tank?

Answers

Flow is given as, F = - 4 gallon per minute into small tank.

( Since, flow is negative )

Volume of oil in large tank, V = 600 gallons.

Now,

Volume of oil has been moved :

[tex]v = F \times t\\\\v = -4 \ gallons/min \times\ 32\ min\\\\ v = -128\ gallons[/tex]

Therefore, 128 gallons of oil has been moved to small tank.

Hence, this is the required solution.

Answer:

128 gallons, into the small tank.  I think its the second option for the last box, not 100 percent sure but i did the question so yea :D

Step-by-step explanation:

The snack stand at the local baseball field sells cherry and lemon snow cones. Yesterday, the stand sold 4 cherry snow cones for every 1 lemon snow cone sold. If there were 30 more cherry snow cones than lemon snow cones sold yesterday, how many snow cones were sold altogether?

Answers

Given:

The stand sold 4 cherry snow cones for every 1 lemon snow cone sold.

There were 30 more cherry snow cones than lemon snow cones sold yesterday.

To find:

The number of snow cones which were sold altogether.

Solution:

Let x be the number of lemon snow cone sold.

The stand sold 4 cherry snow cones for every 1 lemon snow cone sold.

So, number of cherry snow cone sold = 4x

There were 30 more cherry snow cones than lemon snow cones sold yesterday.

[tex]4x-x=30[/tex]

[tex]3x=30[/tex]

Divide both sides by 3.

[tex]x=\dfrac{30}{3}[/tex]

[tex]x=10[/tex]

Total number of snow cones sold is

[tex]\text{Total number of snow cones sold }=x + 4x[/tex]

[tex]\text{Total number of snow cones sold }=5x[/tex]

[tex]\text{Total number of snow cones sold }=5(10)[/tex]

[tex]\text{Total number of snow cones sold }=50[/tex]

Therefore, 50 snow cones were sold altogether.

HELLLLLLLPPPPPPPPPPPPPPPPPPPPP

WILL GIVE BRAINLIEST

Answers

Answer:

probability Han make a free throw is higher.

explanation:

Han make a free throw in basket ball: 60%Han make a 3 point shot is (0.345*100): 34.5%

Therefore, we can determine, the probability Han make a free throw is higher as the percentage of probability is more. 60% > 34.5%

A rope is 250 centimeters long.
You need the rope to be 112 meters long.

How many centimeters should you cut off?

Answers

Answer:100cm

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

Other Questions
The GCF of 28 and 64 is blank Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substance remaining. Assume you have 1 gram of the original substance.pls help, it due today What is Capitalized in this sentance. my dad said you could be a sports announcer Why are the materials and techniques that you choose so important? (a)Rewrite the decimal in the sentence below as a percentage.The value had decreased to 0.02 of the purchase price. It takes 0.5 gallon of cream to make 1 pound of butter How much butter could you make with 0.25 gallons of cream Which two sentences best describe Keckleys purpose for including the description of her conversation with the freed slave (the good old woman) in paragraphs 24? the phrase no less remarkable indicates that the author feels the evolutionary trait Oxides are:A. Products formed during combustionB. Products formed during double replacementsC. Reactants in combustionD. Only formed during complete combustion 3 ways to prevent of Noise pollution Which layer of the atmosphere protects earths surface from being hit by most meteoroids?. A person with a mass of 60.0 kg is traveling at 18 m/s.How much kinetic energy does this person have? Arab cultures charted planets in the Dark Ages. Europeans helped establish the Sun-centered model of the solar system during the Renaissance. Russia and the U.S.A have discovered new features on planets using spacecraft in modern times.This is an example of A. many cultures arguing about how the solar system works and all of their contributions being worthless. B. cultures wasting time by doing the same thing over and over throughout history. C. how contributions by many different cultures throughout history have advanced our understanding of the solar system. D. modern technology proving that earlier cultures could not contribute to our understanding of the solar system. Explain how you can use the knowledge of subject matter experts and your peers Which equation has infinitely many solutions?A) -6.8+3y+2.4=4.3-3yB)1/3y+2.5-2/3y=1.2C)5.1+2y+1.2=-2+2y+8.3D)2/5y=2.3+3/2y What is the degree of the polynomial? HELP PLEASEEEE THERES PICCTURESSS 4. One of Dr. Birdley's boxes has a volumeof 240 cm^3 and a density of 15 g/cm^3.The mass of the box isa) 225 gb) 265 gc)3600 gd) 32 g Whats the correct answer? What is the relationship between sea surface temperature and primary productivity?