Mathematics High School

Solve the system of equations by the substitution method.
X + 8y = 21
3x + 5y = 6

The solution is .(Simplify your answer. Type and ordered pair)

Answers

Answer 1

67

Step-by-step explanation:

idek i guessed

Related Questions

PLEASE HELP!!!!!! IM HORRIBLE AT MATH​

Answers

Im bad at math too! we can be horrible at math together

The four of you split the cost of materials you bought for your lemonade stand if the total cost was 85$ how much did you each pay? (Please I need help)

Answers

Just divide 85 by 4 and you get $21.25

which expression is equivalent to z+(z+6)?

Answers

Answer:

2(z+3)

Step-by-step explanation:

Albina buys a frying pan that costs 33 dollars and a wooden spoon that costs 2 dollars. If sales tax is 10%, what is the total purchase price including tax?

Answers

38.50
33+2 = 35
35*10%= 3.50
35+3.50= 38.50

Can someone answer this please with an explanation.

Answers

Answer:

x=92

Step-by-step explanation:

those to angles are supplementary meaning that they add up to equal 180

so you set up the equation 180=x+x-4

180=2x-4

step 1 add 4 to each side

184=2x

step 2 divide each side by 2

x=92

so the angles equal 92 and 88

Answer:

92°

Step-by-step explanation:

180 degrees on a straight line.

2x - 4 = 180

2x = 184

X = 92°

Write the prime factorization of each number

5). 48

6). 20

7). 66

8). 34

Answers

Answer:

5). 4×4×3

6). 5×2×2

7). 11×3×2

8). 17×2

Step-by-step explanation:

These are the prime factorizations.

Simplify:

-1/2( 4/5 + 8y)

Answers

Answer:

-2/5-4y

Step-by-step explanation:

multiply each side by -1/2

A store has a 30% off sale on pants. With this discount, the price of one pair of pants before tax is $10.20. What was the original price of the pants? *

Answers

14.57   i just took the quiz                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

No more than 15 copies of a newspaper are left in the newspaper rack. Write an inequality to represent this situation.

Answers

Answer:

0≤x≤15

Step-by-step explanation:

The Lee family buys a new car that has a sales price of $35,000. If the car dealer requires a minimum down payment of 15%, what is the minimum down payment in dollars the Lees must pay for their car?
Choose the correct value.
$525
$5,250
$3,500
$15,000

Answers

Answer:

Si un electrón no consume, ni libera energía el átomo se encuentra en

Step-by-step explanationSi un electrón no consume, ni libera energía el átomo se encuentra en:

Can someone help me solve this matrix

Answers

Step-by-step explanation:

4*-2 + 3*-3 = -8 - 9= -17

4*1 +3*-2= 4-6= -2

-2*-2 + 3*-3= 4-9= -5

-2*1 + 3*-2= -2 -6 = -8

-4*-2+6*-3=8-18= -10

-4*1+6*-2=-4-12= -16

the result matrix is

-17 -2

-5 -8

-10 -16

How many grams are in a kilogram

Answers

Answer:

1000

Step-by-step explanation:

the prefix kilo means 1000

Midpoint of (- 2, 6) (4, - 2)

Answers

Answer:

(0,5)

Step-by-step explanation:

Use the midpoint formula to find the midpoint of the line segment.

(x1+x2/2,y1+y2/2)

Substitute in the values for (x1,y1)and (x2,y2).

(-2+2/2,[tex]\frac{4+6}{2}[/tex])

Cancel the common factor of −2+2 and 2.

(−1+1, [tex]\frac{4+6}{2}[/tex])

Add −1 and 1.

(0,[tex]\frac{4+6}{2}[/tex])

Cancel the common factor of 4+6 and 2.

(0, 2+3)

Add 2 and 3.

(0,5)

(Sorry, some of the fractions weren't working)

* A Frog sits on a number line at point −10. It is allowed to make up to 4 jumps. First, it can make a jump of 8 units in either direction, or it can skip this jump. Then, it can make a jump 4 units long or skip this jump. Then, it can make a jump 2 units long, or skip this jump. And, finally, it can make a one-unit jump or skip it. Where can it be at the end? Answer: The possible numbers where frog could be are from

Answers

Answer and explanation:

Assuming the frog jumps from -10 for all jumps, if the frog decides to make all 4 jumps then :

8 units jump= -2 or -18

4 units jump= -6 or -14

2 units jump= -8 or -12

1 unit jump = -9 or -11

If the frog decides to make one jump then skip the others then:

Either it makes 8 units jump= -2 or -18

Or 4 units jump= -6 or -14

Or 2 units jump= -8 or -12

Or 1 unit jump = -9 or -11

If it decides to make 2 jumps and skip the others then:

Either it makes 8 units jump= -2 or -18

and 4 units jump= -6 or -14

Or 2 units jump= -8 or -12

and 1 unit jump = -9 or -11

Or any other mix of units of jump twice

If it decides to make 3 jumps and skip the others then:

Either it makes 8 units jump= -2 or -18

and 4 units jump= -6 or -14

and 2 units jump= -8 or -12

Or 1 unit jump = -9 or -11

and 4 units jump= -6 or -14

and 2 units jump= -8 or -12

Or any other mix of 3 jumps

If it decides to make no jump at all then the frog would remain at -10


Given that R = 6x + 3y
Find y when x = 2 and R = 14
Give your answer as a fraction in its simplest form.​

Answers

Answer:

y = 2/3

Step-by-step explanation:

14 = 6(2) + 3y

14 = 12 + 3y

2 = 3y

y = 2/3

Paula has 2 bananas. She wants to divide each of them into sections. How many 's are there in 2 bananas?

Answers

Answer:

Answer is 1

2 divided by 2

Step-by-step explanation:

A carpenter designs a tabletop in the shape of an ellipse 7 feet long and 4 feet wide. The carpenter sketches a drawing of the tabletop on a coordinate plane. The center of the tabletop is at the origin, the length falls along the x-axis, and the width falls along the y-axis. Which equation represents the tabletop?

Answers

Answer:

C

Step-by-step explanation:

x^2/12.25 + y^2/4 = 1

A carpenter designs a tabletop in the shape of an ellipse 7 feet long and 4 feet wide then, the equation of that ellipse would be [tex]\dfrac{ x^2}{12.25} + \dfrac{ y^2}{4} = 1[/tex]

What is the equation of ellipse if its major and minor axis and center are given?

Suppose that the major axis is of the length 2a units, and that minor axis is of 2b units, and let the ellipse is centered on (h,k) with a major ellipse parallel to x-axis, then the equation of that ellipse would be:

[tex]\dfrac{(x-h)^2}{a^2} + \dfrac{(y-k)^2}{b^2} =1[/tex]

Coordinates of its foci would be: [tex](h \pm c, k)[/tex]  where   [tex]c^2 = a^2 - b^2[/tex]

If its major axis is parallel to y-axis, then,

Coordinates of its foci would be: [tex](h , k\pm c)[/tex] where [tex]c^2 = a^2 - b^2[/tex]and its equation would be:

[tex]\dfrac{(x-h)^2}{b^2} + \dfrac{(y-k)^2}{a^2} =1[/tex]

A carpenter designs a tabletop in the shape of an ellipse 7 feet long and 4 feet wide.

The carpenter sketches a drawing of the tabletop on a coordinate plane.

The center of the tabletop is at the origin, the length falls along the x-axis, and the width falls along the y-axis.

then, the equation of that ellipse would be:

[tex]\dfrac{ x^2}{12.25} + \dfrac{ y^2}{4} = 1[/tex]

Learn more about ellipse here:

https://brainly.com/question/19881832

#SPJ2

A person in an apartment
building sights the top and bottom of an office
building 500 ft. away. The angle of elevation
for the top of the office building is 23° and the
angle of depression for the base of the building
is 50º. How tall is the office building?

Answers

The office building is about 30 feet tall

Write the approximate value of 0.12456
upto 3 significant figures.​

Answers

Step-by-step explanation:

be62vw6vwebe6e6be6ev6eb6eb6eb7eb7eebe73

What is fifty seven over one hundred

Answers

Answer:

57/100

Step-by-step explanation:

57/100

Fifty-seven(57) over one-hundred(100), or 57 more than 100 would be 157!

Hope this helps, if not, comment below please!!!

:L

the set of all numbers greater than or equal to 5 and less than or equal to 7

Answers

5 ≤ x ≤ 7

The list of numbers would be: 5,6,7

Hope this helped :)

The notation according to the set will be "[tex][5, + \infty) \cup (- \infty , 7][/tex]".

Let,

"x" belongs to a set of (Real numbers) R.

∴ [tex]x \ \epsilon \ R[/tex]

Now,

[tex]x \geq 5[/tex][tex]x \leq 7[/tex]

hence,

→ [tex]x \leq 7 \rightarrow (- \infty, 7][/tex]

→ [tex]x \geq 5 \rightarrow [5, + \infty)[/tex]

then,

The notation will be:

→ [tex][5, + \infty) \cup (- \infty , 7][/tex]

Thus the above solution is appropriate.

Learn more:

https://brainly.com/question/11375885

Which expression is equivalent to -6(3x-2/3)

-2x+9
-3x-6(2/3)
-18x+12
-18x+4

Answers

Answer:

option d is correct answer

Step-by-step explanation:

-18x+12

The values in the x column represent a specific number pattern, while the values in the y column represent a different pattern. Which graph provides a visualization of these two patterns?

Answers

Answer:

please give me more context so I can help you more

Please help will give Brain!!

Answers

Answer:

x=3

Step-by-step explanation:

Simplify (8x - 2) (x -3)

Answers

Answe

8x^2-26x+6

Step-by-step explanation:

The answer is 8x^2 + 22x - 6

The balance on Matthew’s gift card is $228. His card was debited by $178 from purchasing several items. What is the remaining balance on his card?

Answers

Answer:

50 dollars

Step-by-step explanation:

228-178=50

What is the formula to find the area of a polygon?

Answers

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem.

you can watch this!!

https://youtu.be/n1YKOggLjUQ

find the area of the shape

Answers

Answer:

787.5

Step-by-step explanation:

23×14=322

A=a+b /2h=15+34 /2·19=465.5

322+465.5=787.5

PLEASE HELP I WILL GIVE BRAINALIST TO THE FIRST PERSON!!!!!!

Answers

Answer:

1.) 1   2.) [tex]\frac{1}{4^{2} }[/tex]   3.)[tex]\frac{7b^{3}}{a^{5}}[/tex] 4.)[tex]\frac{9a^{7}}{b^{6}}[/tex]  5.)[tex]\frac{1}{5^{2}}[/tex] 6.) [tex]\frac{8x^{3}}{27}[/tex]

Step-by-step explanation:

19,2,14,8,11,10,4,15 find the mean

Answers

Answer: 10.375

Step-by-step explanation:

mean = average

Finding the average, means you need to add all the numbers up, and then divide it by the total amount.

-------------------------------------------------------------------------------

First Step: add them up

19+2+14+8+11+10+4+15=83

Second Step: count the amount of numbers

8 numbers in total

Third Step: divide the total amount over numbers

83/8=10.375

Hope this helps!! :)

Please let me know if you have any questions

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\text{When you hear the word \underline{MEAN} think of the question asking for the}\\\large\text{\underline{AVERAGE}. When we find the mean/average we have to ADD}\\\large\text{all of your TERMS, then DIVIDE the total numbers you have!}[/tex]

[tex]\bold{Set: 19,2,14,8,11,10,4,15}\\\bold{Add: 19 + 2+14+8+11+10+4+15}\\\bold{Divide: 8\ because\ thats\ the\ total\ number\ we\ have\ in\ your\ given\ set}[/tex]

[tex]\bold{Equation: \dfrac{19 + 2+14+8+11+10+4+15}{8}}\\\\\bold{Numerator\rightarrow19+ 2+14+8+11+10+4+15}\\\bold{19+2=21}\\\bold{21+14+8+11+10+4+15}\\\bold{21+14=35}\\\bold{35+8+11+10+4+15}\\\bold{35+8=43}\\\bold{43+11+10+4+15}\\\bold{43+11=54}\\\bold{54+10+4+15}\\\bold{54+10=64}\\\bold{64+4+15}\\\bold{64+4=68}\\\bold{68+15}\\\bold{=83}[/tex]

[tex]\bold{Equation: \dfrac{83}{8}}\\\\\large\text{SOLVE above and you will have your answer!}\\\bold{\dfrac{83}{8}=10.375}\\\boxed{\boxed{\large\text{Answer: your MEAN is \bf{10.375}}}}}\huge\checkmark[/tex]

[tex]\large\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amohitrite1040:)}[/tex]

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