Mathematics High School

solve each system of equation by graphing

3x-5y=15
y=2x+4

Answers

Answer 1

brown skin girl brown skin just like pearls

Answer 2

Answer:

Solution: (-5,-6)

Graph:

Solve Each System Of Equation By Graphing 3x-5y=15y=2x+4

Related Questions

Petra’s electricity supply company charges her a fixed quarterly sum plus a rate per unit for electricity used. In the most expensive quarter last year (January to March), she used 2 000 units and her bill was $250. In the least expensive quarter (July to September), she used 600 units and her bill was $138. She is now adding extra insulation to her home which is expected to reduce her overall electricity consumption by 25%. What can she expect her January to March bill to be next year (if there are no increases in overall tariffs)? *

Answers

Answer:

$210

Step-by-step explanation:

(January - March) charge last year :

Unit consumed = 2000

Bill = $250

(July - September) charge last year:

Unit consumed = 600 units

Bill = $138

Billing :

Fixed charge + rate per unit ;

Let fixed charge = c ; rate per unit = m

Billing can be represented by the equation :

mx + c = y

x = unit consumed ; y = total charge

Expensive quarter:

2000x + c = 250 - - - (1)

Least expensive quarter:

600x + c = 138 - - - (2)

From (2)

c = 138 - 600x ; plug into (1)

2000x + 138 - 600x = 250

1400x = 250 - 138

1400x = 112

x = 0.08

0.08 = x = rate per unit

From ; c = 138 - 600x

c = 138 - 600(0.08)

c = 90

Fixed charge = 90

Billing equation :

y = 0.08x + 90

If insulation will reduce unit consumption by 25%

Then, consumption in most expensive quarter will be :

(100 - 25)% * 2000

0.75 * 2000 = 1500 units

Charge will be :

(0.08*1500) + 90

= $210

Write and simplify this numerical expression. Forty-two divided by seven plus the quantity three divided by six 1. Write the numerical expression. 2. Evaluate within parentheses. 3. There are no exponents to evaluate. 4. Multiply and divide from left to right. 5. Add and subtract from left to right.​

Answers

The write and simplification of the numerical expression is as follows:

The calculation is as follows;

1.  Write the numerical expression.  

[tex]42 \div 7 + (3 \div 6)[/tex]  

2.  Evaluate within parentheses.  

[tex]42 \div 7 + 0.5[/tex]

3.  There are no exponents to evaluate.

4.  Multiply and divide from left to right.  

[tex]6 + 0.5[/tex]

5.  Add and subtract from left to right.  

6.5

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Answer:

6.5

Step-by-step explanation:

whos prettier? doja cat or megan thee stallion

Answers

Answer:

The Stallion

Step-by-step explanation:

Answer:

megan thee stallion

Step-by-step explanation:

The size of a smart TV is measured along the diagonal length.
What is the approximate size, measured to the nearest inch,
of a 30.9 inch by 48.5 inch smart TV screen?
A. 58 inches
B. 64 inches
C. 1,654 inches
D. 3,307 inches

Answers

B. 64 inches! hope this helps :)
64 inches i believe

Imagine that you live near a skatepark. As part of some park renovations, the city plans to make the square skatepark 5 meters shorter in one direction and 6 meters longer in the other. What is the area of ​​the new skatepark?

(please include the solving steps in your answer)

Answers

Answer:

x² + x - 30

Step-by-step explanation:

Let the initial side be x

New skatepark has dimensions:

x - 5 and x + 6

Its area is:

(x - 5)(x + 6) = x² + 6x - 5x - 30 = x² + x - 30

find the length of the altitude drawn to the hypotenuse.the triangle is not drawn to scale

Answers

Answer:

4√5

Step-by-step explanation:

Let's call it x

According to Euclidean theorem x^2 = 5×16

x^2= 80 and

x = 4√5


Use the distributive property to simplify the expression and then evaluate. Let x= 4 and y= -2
-6(-2x + 3y + 8)

Answers

Answer:

12v-18y-48

Step-by-step explanation:

-6(-2v+3y+8)

12v-18y-48

68.8 rounded to one decimal place is ?

Answers

Answer:

68.8

Step-by-step explanation:

rounding to one decimal place is the same as rounding to the nearest tenth (see attached for reference).

In this case, 68.8 is already expressed as a number with one decimal place. No further manipulation is needed.

guys I'm stuck plz help!!!!​

Answers

Answer:

I believe 70

Step-by-step explanation:

Sean prepared 44 kilograms of dough after working 11 hours. How many hours did Sean work if he prepared 48 kilograms of dough? Assume the relationship is directly proportional.

Answers

This is an example of direct variation.

So,      44    48            

           11       x

For this, you have to use the formula, 44x = 48 × 11

= (48 × 11) ÷ 44 = 12

Hence, your answer is 12 hours

Part 1: Check your work now. Use the substitution
method to check when h= 5 will it make this equation
true?
8h + 5 = 6h + 15
Part 2: How much money do both Diego and Jazzy
make after working 5 hours? (Write in complete
sentences)

Answers

Answer:

For part 1, it is true.

2h = 5 x 2 = 10

5 + 10 = 15

For part 2, I don't what your referring to, is it the 8h + 5 = 6h + 15?

Answer:

8h +5=6h+15

8 x 5 + 5= 6 x 5 +15

35= 50

= 35/50

= 7/10

please PlEaSe PLEASE SOLVE THIS!!!! I REALLY NEED HELP ON THIS. In ABC, m

Answers

Answer:

sorry, but there is nothing to answer here :(

Step-by-step explanation:

Answer:

in abc, M???

Step-by-step explanation:

10. How much interest will be earned in 4 years
from $2,450 placed in a savings account at 62 %
simple interest?

Answers

Answer:

$6100.80

Step-by-step explanation:

$6100.90 i think sorry if wrong

please help all of it, tysm

Answers

1. 0.667

2. 0.001

3. Email, Chores, homework
As in email the least and homework the most

4. The least portion of the class is the amount of people that walk to school. The 18% of people is the least.

5. Work: the number of pets people have is LESS than the number of people on a sports team

6. It is LESS than the portion of students that don’t live within a mile radius, for 11/50 is equivalent to 22% and 100-22 is equivalent to 78. 78% don’t live within a mile. So the answer is LESS.

7. 60

8. 0.8 which is 80%

9. 4

10. 12.8

The last four problems are up to you, it was a bit difficult for me



Which expression correctly sets up the quadratic formula with x^2+1=2x-3

Answers

Given:

The quadratic equation is

[tex]x^2+1=2x-3[/tex]

To find:

The expression that correctly sets up the quadratic formula with the given equation.

Solution:

We have,

[tex]x^2+1=2x-3[/tex]

[tex]x^2+1-2x+3=0[/tex]

[tex]x^2-2x+4=0[/tex]

On comparing with [tex]ax^2+bx+c=0[/tex], we get

[tex]a=1,b=-2,c=4[/tex]

The quadratic formula is

[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

Putting [tex]a=1,b=-2,c=4[/tex], we get

[tex]x=\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(4)}}{2(1)}[/tex]

Therefore, the required expression is [tex]\dfrac{-(-2)\pm \sqrt{(-2)^2-4(1)(4)}}{2(1)}[/tex].

Which graph represents the function f(x)=-|x|-2?

Answers

Answer:

ind the absolute value vertex. In this case, the vertex for y=−|x|−2 is (0,−2).

(0,−2)

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

(−∞,∞)

Set-Builder Notation:  {x|x ∈ R}

For each x value, there is one y value. Select few x values from the domain. It would be more useful to select the values so that they are around the x value of the absolute value vertex.

 x     y

−2   −4

−1    −3

 0   −2

 1    −3

 2   −4

Step-by-step explanation:

Answer:

The answer is C.

I hope this helps you!

Need help again ASAP

Answers

Answer:

According to my calculator, the answer should be A) 5/6

PLEASE EXPLAIN (Arithmetic Sequences )

If u59 = 1/10 and u100 = 1 19/20 for an arithmetic sequence, find the first term and the common difference

Answers

You have to subtract to get the inverse operation

drag the numbers to the boxes to order them from least to greatest value

Answers

Answer:

what numbers?

Step-by-step explanation:

A tracksuit costs £25. The price goes up by 5%. What is the new price?

Answers

Answer: £26.25

Step-by-step explanation:

10% of £25 = £2.50

Half of £2.50 = £1.25

therefore if you add £1.25 to £25 it equals £26.25

18 erasers cost $0.90, how much would 3 erasers cost?

Answers

Answer:

$0.15

Step-by-step explanation:

0.90/18=0.05

0.05x 3=0.15

Answer:

$0.15

Step-by-step explanation:

0.90/18=0.05

0.05x 3=0.15

The diagram shows two congruent equilateral triangles whose overlap is a hexagon. The areas of the smaller triangles, which are also equilateral, are 1 , 1 , 9 , 9 , 16 and 16 , as shown. What is the area of the inner hexagon?

Answers

Answer:

Step-by-step explanation:

Answer:

38

Step-by-step explanation:

work out the equation of the line which has a gradient of 2 and passes through the point (1,4)


please answer quick

i will mark you brainiest

Answers

gradient is 2

Step-by-step explanation:

hhhhhhhhfhdd

The perimeter of a triangle is 120. If the ratio of the triangle's side is 4:5:6, what is the length of the shortest side?​

Answers

Hey there ☺️

Please mark me as brainliest and follow me ..

here is ur answer ..

$213 ski jacket with a 30% discount and a 6% tax

Answers

$158.046

Take the discount off first, 213*.70=149.10, then multiply 149.10*1.06= $158.046

158.04$.

What is discount?

A discount is a decrease in the cost of a commodity or service. If the item is broken, you can ask the manager for a discount.

Given the Written price of the ski jacket is 213$ on that there is a discount of 30% and 6% of tax. Hence,

discounted price of jacket = 213 (1- 30%)

discounted price of jacket = 149 approx.

Total price of the jacket after-tax = 149 (1 + 6%)

The total price of the jacket after-tax = 158.04$

Therefore, the price of a $213 ski jacket with a 30% discount and a 6% tax is 158.04$.

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Help me please I realy need help

Answers

Answer:

sry i cant help u and your jumping horses

Step-by-step explanation:

A)distributive property of multiplication over subtraction
B)subtraction property of equality
C)associative property of multiplication
D)multiplication property of equality

Answers

Answer: sup brendalys it’s me Timotheus

Step-by-step explanation:

The answer is c I think

I need help with a math problem

Answers

well we need the problem or else we cant help you.

If the length of leg x is 12 feet, what is the length in feet of the hypotenuse of each triangle? Record your answer in the boxes below. Be sure to use the correct place value .

Answers

Answer:15.00

Step-by-step explanation:

Answer:

The length of the hypotenuse of each triangle is 13 feet. Below is the explanation

Step-by-step explanation:

Given:

    In the middle, there is a square with 10 ft as the side length.

    An Isosceles triangle formed on each side of the square which height as 12 feet.

To find:

    The hypotenuse measure of the right triangle.

Let's use the Pythagoras theorem to find hypotenuse measures.

I'll attach the file to find the hypotenuse measure.

Hypotenuse measures 13 feet.

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https://brainly.com/question/20545047

What is a decimal that is equivalent to the fraction 6/10

Answers

Answer:

0.60 or 0.6

Step-by-step explanation:

To convert you devide the two 6/10 is 0.6

0.6 is a decimal that is equivalent to the fraction 6/10

What is Number system?

A number system is defined as a system of writing to express numbers.

A fraction represents a part of a whole.

The given fraction is 6/10.

The fraction is six by ten

In the given fraction is six and denominator is ten.

We need to convert 6/10 to the decimal which is equivalent.

10 is the divisor and 6 is the dividend.

6/10=0.60

Six by ten equal to  zero point six

Hence, 0.6 is a decimal that is equivalent to the fraction 6/10

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