Mathematics High School

solving by elimination
2x+8y=6
5x+20y=15
​

Answers

Answer 1

Answer:

Solve for  x  in the first equation.

Subtract  8 y  from both sides of the equation.

2 x = 6 − 8 y

5 x + 20 y = 15

Divide each term by  2  and simplify.

Divide each term in  

2 x /2 =  6/2  − 8 y/2  

5 x + 20 y = 15

Cancel the common factor of  2 .

Cancel the common factor.

2 x /2  =  6 /2  + (− 8 y)/ 2

Step-by-step explanation:

I don't have room to put the rest. So go to math-way

Related Questions

Write an equation for slope -4 y- intercept0

Answers

Answer:

Step-by-step explanation:

If the slope of this line is -4 and the y-intercept is 0, then we can write the slope-intercept equation for this line as

y = -4x + 0, or just y = -4x

2 x (6 divied 2 dived 8) - 4

Answers

Answer:

18

Step-by-step explanation:

6/2=3+8=11

11*2=22

22-4=18

Use this to help you next time!

Paranthesis

Exponets

Multiplication

Divison

Add

Subtract

Hope this helps!

Please help me!
No links!!! Please!

Answers

Answer:

d = -3

Step-by-step explanation:

-3 -9 = -12

-12/6

= -2

Rewrite 2.7 ÷ 0.3 as a fraction.

Answers

Answer:

the answer is 9

check the picture for workings

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HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

Answer:

B

Step-by-step explanation:

Answer:

Thats a tuff 1 A estimate of B

Step-by-step explanation:

Use the distributive property to factor the expression below.
544 y - 12 x 7

Answers

The answer is 4 (136y-21)

Explanation:

Factor 4 out of 544y.
4 (136y) - 12*7

Factor 4 out of -12*7.
4 (136y) + 4 (-3*7)

Factor 4 out of 4.
(136y) + 4 (-3*7)
4 (136y- 3*7)

Multiply -3 by 7.
4 (136y - 21)

George bought a model of a Viking ship for $68. If he paid
$5.10 in sales tax, what was the sales tax rate?

Answers

Answer:

We can convert 6.75% to a decimal by dividing by 100.

If x is the price of the house, then the sales tax is 0.0675x. The price of the house and the sales tax add up to $319,000.

x+0.0675x=319,000

Combe terms on the left.

1.0675x=319,000

Finally, divide both sides by 1.0675.

x=319,0001.0675=298,829.04

Mhanifa can you please help? I will mark brainliest! This is due soon!

Answers

Answer:

In a n -sided polygon, sum of its interior angles is (n−2)×180∘ , hence sum of the interior angles in a convex hexagon is (6−2)×180∘=720∘ .

Answer:

Q1

Sum of interior angles on n-sides polygon is:

S = (n - 2)*180°

Sum of interior angles of a hexagon (6-sided polygon):

S = (6 - 2)*180° = 4*180° = 720°Q9

Sum of exterior angles of any polygon is 360°

Each exterior angle of a pentagon is:

360°/5 = 72°

Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 preguntas, 16 incorrectas y el resto las dejó en blanco, ¿qué puntuación obtuvo en la evaluación?

Answers

La pregunta está incompleta:

Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 preguntas, 16 incorrectas y el resto las dejó en blanco, ¿qué puntuación obtuvo en la evaluación?

Puntos por respuesta:

Correctas: 4

En blanco: -1

Incorrectas: -3

Answer:

Alfredo obtuvo una puntuación de 153.

Step-by-step explanation:

De acuerdo a la información proporcionada, conoces el número de preguntas en la evaluación y el número de preguntas que Alfredo contestó de forma correcta e incorrecta y tienes que restar estas del total de preguntas para encontrar el número de preguntas que dejó en blanco:

100-57-16=27

Ahora, debes multiplicar el número de respuestas correctas, incorrectas y en blanco por su respectivo puntaje:

Correctas: 57*4=228

En blanco: 27*(-1)=-27

Incorrectas: 16*(-3)=-48

Finalmente, debes sumar los resultados obtenidos por cada tipo de respuesta:

228+(-27)+(-48)= 228-27-48=153

De acuerdo a esto, la respuesta es que Alfredo obtuvo una puntuación de 153.

Find the opposite of the opposite of each integer.
5. -4
7. 8
6. -15
8. -7

Answers

Answer:

5: 4

7: -8

6: 15

8: 7

I hope this helps you <3

Step-by-step explanation:

10 seconds : 1 minute as a fraction in simplest form

Answers

Answer:

1/6

Step-by-step explanation:

60 seconds is one minute, so 10 seconds is one-sixth of a minute.

Answer:

Was there supposed to be an attachment?

Step-by-step explanation:

I think there was supposed to be an object but um, i will try my best with the info there is.

10 seconds in a fraction of a whole minute is 1/6. (10/60 = 1/6)

1 minute as a fraction is just (60/60 or 1)

PLEASE PLEASE HELP IVE BEEN STUCK ON THIS FOR TOO LONG

Answers

Answer:

10

Step-by-step explanation:

Answer: 10

Steps:
((hk - 4)/2) + 6 =
(-4*-3)-4/2) + 6 =
(12-4/2) + 6 =
(8/2) + 6 =
4 + 6 = 10

PLZ HELP ASAP WILL GIVE BRAINLIEST IF CORRECT The figure shows the letter Z and four of its transformed images-A, B, C, and D:

Which of the four images was formed by a reflection of the letter Z?
(4 points)

A
B
C
D

Answers

Answer:

kjsdhkjb

Step-by-step explanation:

Answer is a.

Since you started recording it on your calendar. There have been 112 sunny and 42 rainy days. What has been the rainy day to sunny day ratio?

Answers

Answer: 3:8

Step-by-step explanation:

Number of rainy days = 42

Number of sunny days = 112

To calculate the rainy day to sunny day ratio, we can first use the numbers given as fraction and divide to its lowest term. This will be:

= Number of rainy days / Number of sunny days

= 42 / 112

= 3/8

Therefore, the ratio of rainy days to sunny days will be 3:8

15 divided by 8.145 no need to explain

Answers

Answer:

1.841621

Step-by-step explanation:

15÷8.145

1.841621

1.84162063 is the answer

PLEASE HELP MEEE!!!!!

Answers

answer is A 400 x .45 is 180 plus 25 = 205

3. Label all the following values: You may label the graph or write the approximate values. A. Median = 7 B. Lower quartile (Q1) C. Upper quartile (Q3) D. Minimum E. Maximum

Answers

Answer:

is this a equation for HW for is this random?

Step-by-step explanation:

PLEASE HELP WILL MARK BRAINLIST AND GIVE EXTRA 5 POINTS ​

Answers

Answer:

Danny does

Step-by-step explanation:

Compare the fraction of seconds, find their common denominator, then compare the nominators.

3/12, 4/12

Danny's fraction has the least nonimanator so Danny ate the fastest.

Please someone help, I know its kind of a lot, but I need these answers fast pls.
Using the graphing calculator, type in the table and complete a linear regression. The value of the correlation coefficient is found next to the letter (__) in the table. The value of the correlation coefficient is (__) [round to the hundredths place]. When the correlation coefficient is interpreted, it means that the correlation is (__) and (__). This means the points will be (__) [close or further away] to the line.

Answers

Answer:

Im not sure

Step-by-step explanation:

GOOD LOOK ON YOUR TEST HE DISCONN-ECTED

Find the area of the trapezoid

Answers

area = ( top rule + bottom rule ) × height / 2

area = ( 2 + 3 ) × 4 / 2

area = 5 × 4 / 2

area = 20 / 2

area = 10

The area is 10. You can just count the squares and the half squares

What's the plura form l of
[tex] \huge\mathfrak\pink{formula} \ [/tex]
​

Answers

I believe that the answer is formulae

hi pls answer <333333

Answers

Answer:

6 , -6 , -9 , 9

.................... .....

Answer:

mom

Step-by-step explanation:

Does any body know how to find Late Payment in Mathematics.​

Answers

Answer:

I don't believe there is a standard formula for late payments. The late payment charge would vary by the lending institution. Some may have their own formula and some may have a set charge.

Step-by-step explanation:

luisa is building a sand box in her backyard. she places four pieces of wood in a rectangle to form the frame. the rectangle is 4 feet long and 3 feet wide. how can she use a measuring tape to make sure that the corners of the frame will be right angles?

Answers

Answer:

As we know rectangles have 90 degree angles at all 4 of its corners.

In this question we know that the length is 4 feet while the bredth is 3 feet.

Therefore to solve this answer we can use the Pythagoras theorm.

By Pythagoras:

[tex]4^{2} + 3^{2} = diagonal^{2}[/tex]

Therefore the diagonal must be 5 feet

So if Luisa measures the diagonal with a tape and it measures 5

Then it proves that all 4 corners due have 90 degree angles

Please do mark my answer as brainliest. It would really help me answer more of such questions in the future :)

4 x 1/3 as a fraction

Answers

Answer:

4/3 = 1⅓

improper from and it's mixed fraction

Step-by-step explanation:

4*1/3

4/3 = 1⅓

what is a name for the marked angle​

Answers

Answer:

You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size.

What is the concept of cause and effect?
A.
when an action causes something to come into effect
B.
when an action is caused but there is no resulting effect
C.
when an action doesn't actually have a resulting effect
D.
when an action leads to an effect that is not desired

Answers

Answer:

A.  when an action causes something to come into effect

Step-by-step explanation:

Mark as brainliest please. Hope the answer helps :)

In ΔVWX, v = 5.4 cm, x = 5.9 cm and ∠X=64°. Find all possible values of ∠V, to the nearest 10th of a degree.

Answers

Answer:

34

Step-by-step explanation:

Answer:55.3

Step-by-step explanation:

Can some please help me?
First person gets Brainliest, 10 points!

Answers

Answer:

oof iiiiiimmmmmmmmmso sorrry

To find area, you do length * width
For the rectangle, the length is 48 inches and the width is 32 inches.
To find the area of the rectangle, we do 48 * 32
48 * 32 = 1,536
The area of the rectangle is 1,536 inches.
To find the area of a triangle, it is a little different.
To find the area of a triangle, you use the following formula: A = 1/2 bh
We use 48 inches for the base of the triangle since the base side is equivalent to the base side of the rectangle, which is 48. We use 12 inches for the height.
In this case, we do: Area = 1/2(48)(12)
Using PEMDAS, we do multiplication or division depending on which one comes first.
In this case, division comes first
1/2(48) or 48/2 = 24
Then multiply
24 * 12 = 288
The area of the triangle is 288 inches.

What transformation of Figure 1 results in Figure 2.? Select from the drop-down menu to correctly complete the statement. A Choose... of Figure 1 results in Figure 2. Figure 2 is a triangle and it is a transformation of Figure 1

Answers

Answer:

fliped up ward

Step-by-step explanation:

Answer:

a rotation,

Step-by-step explanation:

just took the quiz

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