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2 years ago

Find the solution to the system of equations below: y = 4x + 20 y = 8x - 4

Mathematics

1 answer:

bija089 [108]2 years ago

4 0

Answer:

(6, 44)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 4x + 20

y = 8x - 4

Step 2: Solve for x

Substitution

Substitute in y: 8x - 4 = 4x + 20
Subtract 4x on both sides: 4x - 4 = 20
Add 4 on both sides: 4x = 24
Divide 4 on both sides: x = 6

Step 3: Solve for y

Define equation: y = 8x - 4
Substitute in x: y = 8(6) - 4
Multiply: y = 48 - 4
Subtract: y = 44

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Find "G". Round to two decimal places. G= R+ab/at R=257 a=4.88 b=37.4 t=61.5

givi [52]

Answer:

G ≈ 1.46

Step-by-step explanation:

Given

G = $\frac{R+ab}{at}$ , substitute values

G = $\frac{257 4.88(37.4)}{4.88(61.5)}$

= $\frac{257+182.512}{300.12}$

= $\frac{439.512}{300.12}$ ≈ 1.46 ( to 2 dec. places )

6 0

2 years ago

john read the first 114 pages of a novel which is 3 pages less than 1/3 of the novel. write the equation

tatyana61 [14]

The equation is:

$114=\frac{p}{3}-3$

And

Total number of pages are 351

Step-by-step explanation:

The equation has to be formed by using the given information.

Let p be the total number of pages in the novel

Then

1/3rd of the p will pe:

$\frac{p}{3}$

Total pages read by John = 114

Then according to the statement

$114=\frac{p}{3}-3$

We can solve the equation to get the total pages of the novel

$114=\frac{p}{3}-3\\Adding\ 3\ on\ both\ sides\\114+3=\frac{p}{3}-3+3\\117=\frac{p}{3}\\Multiplying\ both\ sides\ by\ 3\\3*117 = \frac{p}{3}*3\\p=351$

The equation is:

$114=\frac{p}{3}-3$

And

Total number of pages are 351

Keywords: Linear equation, variable

Learn more about linear variable at:

#LearnwithBrainly

8 0

2 years ago

Plz tell me this solution it's very urgent

a_sh-v [17]

Step-by-step explanation:

here is fig 15

x=36 (v.o.a are equal)

36+y=180

y=180-36=144

y=z=144 vertically

3 0

2 years ago

Number 4 please. its confusing

Deffense [45]

Answer:

63 monocotyledons

Step-by-step explanation:

some abbreviations ill be using:

monocotyledons=m

dicotyledons=d

3m / 4d

x / 84d

you need to figure out what x is

you can divide 84/4 and get 21

now that you have 21, you can multiple that number by 3

21x3=63

therefore, there are 63 monocotyledons

7 0

2 years ago

Read 2 more answers

I HAVE AN EXAM PLEASE HELP ME GET THE ANSWER

sesenic [268]

Answer: The ladder is 5.3 m long
Step by step solution
1. Draw out the scenario, ie a right triangle where the hypotenuse is the ladder, the wall is 4.5m and the angle the ladder and the ground makes 58 degree.

2. Soh, Cah, Toa
The wall is opposite, the ground is adjacent, and the ladder is hypotenuse
Sine (58) = 4.5/h

3. Solve for hypotenuse
h * sine (58) = 4.5
h = 4.5/sine (58)
h = ~ 5.3 m

3 0

2 years ago