Solve the system of equations:
y= 2x - 2
y= x2 - x-6
O A. (-1,-5) and (4,2)
O B. (0, -2) and (2, 2)
O C. (-1,-4) and (4, 6)
D. (-2,0) and (3,0)

Answers

Answer 1

Answer:

C)  (-1, -4) and (4, 6)

Step-by-step explanation:

[tex]\textsf{Equation 1}:y=2x-2[/tex]

[tex]\textsf{Equation 2}:y=x^2-x-6[/tex]

Substitute Equation 1 into Equation 2 and solve for x:

[tex]\implies 2x-2=x^2-x-6[/tex]

[tex]\implies x^2-3x-4=0[/tex]

Find two numbers that multiply to -4 and sum to -3:  -4 and 1

Rewrite the middle term as the sum of these two numbers:

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

Factorize the first two terms and the last two terms separately:

[tex]\implies x(x-4)+1(x-4)=0[/tex]

Factor out the common term [tex](x-4)[/tex]:

[tex]\implies (x+1)(x-4)=0[/tex]

[tex]\implies (x+1)=0 \implies x=-1[/tex]

[tex]\implies (x-4)=0 \implies x=4[/tex]

Substitute the found values of x into Equation 1 and solve for y:

[tex]x=-1 \implies y=2(-1)-2=-4[/tex]

[tex]x=4 \implies y=2(4)-2=6[/tex]

Therefore, the solution to the system of equations is:

(-1, -4) and (4, 6)


Related Questions

This is lesson 9.4 - special right triangles.
Please help me

Answers

Triangle ABC is an equilateral triangle. it is equiangular. Therefore, the value of x is 60 degrees.

What is an equilateral triangle?

An equilateral triangle is a triangle that has all it sides and angles equal to each other.

An equilateral triangle is equiangular.

Therefore, the angles of an equilateral triangles are equal to 60 degree each.

Recall the sum of an angle of a triangle is 180 degrees.

Therefore, the value of angle x is 60 degrees.

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Help oh my god give me the area of this shape I’m gonna cry

Answers

Answer:

96

Step-by-step explanation:

2 x 8 =16

8 x 7 = 56

3 x 8 = 24

24 + 56 = 80

80 + 16 = 96

Hi!

The area of the entire figure is 76 units squared.

NOTE: This question has two different shapes: a rectangle, and a triangle.

Rectangle Formula:

Length * Width = Area

[tex]LW=A[/tex]

Triangle Formula

(Base * Height) / 2 = Area

[tex]\cfrac{bh}{2}=A[/tex]

Let's first get the rectangle's area:

[tex]LW=A[/tex]

[tex]8*7=A[/tex]

[tex]56=A[/tex]

The area of the rectangle is 56.

Now, for the top triangle:

[tex]\cfrac{bh}{2} =A[/tex]

[tex]\cfrac{8*2}{2} =A[/tex]

[tex]8=A[/tex]

The area of the top triangle is 8.

Now, for the bottom triangle.

[tex]\cfrac{bh}{2} =A[/tex]

[tex]\cfrac{8*3}{2} =A[/tex]

[tex]12=A[/tex]

The area of the bottom triangle is 12.

Now, add them all together:

[tex]56+8+12=76[/tex]

help me with this question, please

Answers

Answer:

Part 1: [ -4 = -8 ]

Part 2: Inconsistent

Step-by-step explanation:

Part 1

1. Move all terms that don't contain x to the right side:

3x - 6y+6y = -12+6y

= 3x = -12 + 6y

2. Isolate x:

[tex]\frac{3x}{3} = \frac{-12+6y}{3}[/tex]

x = -4 + 2y

3. Substitute the new expression into the original:

-4 + 2y - 2y = -8

4. Simplify:

-4 + 0 = -8

[ -4 = -8 ]

Part 2

The two solutions are not equal in value, so, we can conclude that the system of equations has no solution, or is inconsistent.

hope this helps!

Graph f(x) = 4[x] +5.
a.
b.
X
C.
d.
r
16

Answers

Answer:

C

Step-by-step explanation:

5.7.PS-7
Solve the inequality. Then graph the solutions on a number line.
6< - 3(2x-6)
A. X≥
• B. X >
O C. X <
O D. XS

Answers

the answer is a x equal to or greater than

In a large company, 45% of the employees wear khaki pants on a daily basis. Which calculation finds the probability of getting less than 40% of employees wearing khaki pants in a random sample of 50 employees

Answers

The probability of getting less than 40% of employees wearing khaki pants in a random sample of 50 employees is 0.18.

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

P(E) = Number of favorable outcomes / total number of outcomes

In a large company, 45% of the employees wear khaki pants on a daily basis.

40% of employees wearing khaki pants in a random sample of 50 employees

So, 40% of 45% x 50

= [tex]0.40 \times 0.45 \times 50 \\ \\9[/tex]

The probability of getting less than 40% of employees wearing khaki pants in a random sample of 50 employees.

= 9 /50

= 0.18

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The first thing you should do in solving a word problem is estimate what you think the answer would be.

True
False

Answers

Answer:

The answer is True.

Step-by-step explanation:

Estimate the Answer Before Solving Having a general idea of a ballpark answer .Or the problem lets students know if their actual answer is reasonable or not.

An item on sale costs 15% of the original price. The original price was $97

Answers

Answer:

$14.55

Step-by-step explanation:

1) lan's new Mercedes cost him $75,000. From the
moment he drives it off the lot, it will depreciate
by 20% each year for the first five years. What will
be the car's value be at the end of five years?
(Round to the nearest whole number.)

Answers

Answer: The answer to this is 3000,

Step-by-step explanation:  

I think this is the answer because when you find out what 20% of 75000 is, (which is 15000) you can divide 20% by 5 and there is your answer, i hope this helps

Please help me ):
.
.
.
.


Jeremy is x years old. He is 5 years younger than his sister. Together, the sum of their ages is 29 years. Enter an equation that can be used to find Jeremy's age (x).​

Answers

Answer:

Jeremy is 12 years old

Step-by-step explanation:

Jeremy age=X

Sister age=Y

1. X+Y=29 (sum of their ages)

2. X=Y-5 (he is 5 years younger than his sister)

*Substitute eq 2 into eq 1

Y-5+Y=29

2Y=29+5

2Y=36 (divide both sides by 2)

Y =17

Substitute value of Y into eq 1 to find X

X+17=29

X=29-17

X= 12

Checking answer:

12+17=29

17-5=12

Hence why Jeremy is 12

what is the surface area of this?

Answers

Answer:

Surface Area = 96

Step-by-step explanation:

Area of Triangle: Area = 1/2 * Base * Height

Top Triangle:

Area = 1/2 * 6 * 2 = 6

Bottom Triangle:

Area = 6

Area of Rectange: Area = Length * Height

Left Rectangle:

Area = 7 * 3 = 21

Mid Rectangle

Area = 7 * 6 = 42

Right Rectangle

Area = 21

Surface Area = TopTri + BotTri + LeftRect + MidRect + RightRect

Surface Area = 6 + 6 + 21 + 42 + 21 = 96

Can someone please give me the (Answers) to this? ... please ...

I need help….

Answers

Answer:

see explanation

Step-by-step explanation:

2 chords intersecting inside a circle , then the product of the parts of one chord is equal to the product of the parts of the other chord.

6

BE × ED = AE × CE , that is

10 × 3x = 12(2x + 1) ← distribute parenthesis by 12

30x = 24x + 12 ( subtract 24x from both sides )

6x = 12 ( divide both sides by 6 )

x = 2

then

ED = 3X = 3(2) = 6

7

RJ × JP = SJ × JQ , that is

6 × 3x = 4(4x + 1) ← distribute parenthesis by 4

18x = 16x + 4 ( subtract 16x from both sides )

2x = 4 ( divide both sides by 2 )

x = 2

then

RP = RJ + JP = 6 + 3x = 6 + 3(2) = 6 + 6 = 12

Please help i need answer asap

Answers

Answer:

14x+6+(5x+30+=2190

Step-by-step explanation:

What is the result when the number 44
is increased by 75%?

Answers

Answer:

77

Step-by-step explanation:

75% of 44 = 33

33 + 44 = 77

Answer:

77.

Step-by-step explanation:

75% of 44

= 3/4 * 44

= 33

33+44

= 77.

Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

  a)  1.6×10⁻⁶

  b)  2×10⁷

Step-by-step explanation:

You want the product or quotient in standard form of ...

(8×10⁻³)×(2×10⁻⁴)(6×10²)÷(3×10⁻⁵)

Exponents

The rules of exponents apply:

  (a^b)(a^c) = a^(b+c)

  (a^b)/(a^c) = a^(b-c)

Scientific notation

A number is said to be in scientific notation if there is one digit to the left of the decimal point, and the multiplier is expressed to an appropriate power of 10. The power of 10 may need to be adjusted so the decimal point is in the correct place. In general, the power of 10 represents the place value of that most-significant digit.

Standard form

In the US, a number is written in standard form as a sequence of digits with an optional decimal point. Integers are written so the least-significant digit has a place-value of 1.

Elsewhere, a number is written in standard form when it is written in scientific notation.

We have given both forms a number here, so you will need to choose the one that is standard form where you are.

a) (8×10⁻³)×(2×10⁻⁴)

The product is (8×2)×10^(-3-4) = 16×10^-7 = 1.6×10^-6

= 0.0000016

b) (6×10²)÷(3×10⁻⁵)

The quotient is (6/3)×10^(2-(-5)) = 2×10^7

= 20,000,000

<95141404393>

what is the distance between -45 and 35

Answers

Answer:

10

Step-by-step explanation:

Answer:

81

Step-by-step explanation:

-45 minus 35 is -80 so that's  80 units. and including zero it's 81 units

7/5 as a mixed number​

Answers

1 2/5 is a mixed number of 7/5

Answer:

The answer is given in the picture

Step-by-step explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

LET ME KNOW IF YOU NEED EXPLANATION

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Factorise the following:
A. 4xy-16
B. xy+2xy-x
C. 2x²-18x+12
D. 5xy+20x-9y-36

Answers

A. 4xy-16

=4(xy−4)

B. xy+2xy-x

3xy−x

=x(3y−1)

C. 2x²-18x+12

2x²−18x+12

=2(−9x+6)

D. 5xy+20x-9y-36

5xy+20x−9y−36

=(y+4)(5x−9)

What two-dimensional shape is formed by the cross section shown below?

Answers

Answer:

I believe rectangle.

Step-by-step explanation:

solve each logarithmic equation. Round your answer to two decimal places.
Teach me this one? I want to work on the next and will submit it once I have it done.
7 log9 (x + 8) = 7

Answers

Answer:

[tex]\sf \boxed{\bold{x=1}}[/tex]

Explanation:

[tex]\rightarrow \sf 7 log_9 (x + 8) = 7[/tex]

divide both sides by 7

[tex]\rightarrow \sf \dfrac{7\log _9\left(x+8\right)}{7}=\dfrac{7}{7}[/tex]

simplify the following

[tex]\sf \rightarrow \log _9\left(x+8\right)=1[/tex]

apply log rules                   [tex]\underline{The \ rule}: \ \bold{log_{b} (a)= c} \ \ \Longrightarrow \sf a = b^c[/tex]

[tex]\sf \rightarrow x+8 = 9^1[/tex]

simplify

[tex]\sf \rightarrow x+8=9[/tex]

subtract both sides by 8

[tex]\sf \rightarrow x=1[/tex]

[tex]\\ \rm\Rrightarrow 7log_9(x+8)=7[/tex]

[tex]\\ \rm\Rrightarrow log_9(x+8)=1[/tex]

[tex]\\ \rm\Rrightarrow x+8=9^1[/tex]

a^1=a

[tex]\\ \rm\Rrightarrow x+8=9[/tex]

[tex]\\ \rm\Rrightarrow x=9-8[/tex]

[tex]\\ \rm\Rrightarrow x=1[/tex]

whats the y intercept and rate of change ill give 20 pt please help me thank u

Answers

Answer:

y-intercept= (0,7) and rate of change=

Step-by-step explanation:

The y-intercept of a graph is the point on the graph where it intersects the y-axis or where x=0. In this case it is (0,7) so that is the y-intercept. The rate of change is equal to y2-y1 divided by x2-x1. Basically, just pick 2 random points on the line and subtract their y coordinates, then subtract their x-coordinates and divide the answers with each other. So, one point is (0,7) and another point is (2,4). Therefore, rate of change is 7-4 divided by 0-2. This gives us a rate of change of -3/2

help me i need help.

Answers

Answer:

The value of a side = 5

Step-by-step explanation:

By using PGT theoram

= +

=> 13² = a² + 12²

=> 13² - 12² = a²

=> 169 -144 = a²

=> 25 = a²

=> √25 = a

=> 5 = a

Answer:

a = 5

Step-by-step explanation:

using Pythagoras' identity in the right triangle.

the square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

a² + 12² = 13²

a² + 144 = 169 ( subtract 144 from both sides )

a² = 25 ( take square root of both sides )

a = [tex]\sqrt{25}[/tex] = 5

When p = 12, t = 2, and s = one-sixth, r = 18. if r varies directly with p and inversely with the product of s and t, what is the constant of variation? one-eighth one-half four and one-half 18

Answers

The constant of variation given that  r varies directly with p and inversely with the product of s and t is one-half

From the question given above,

r ∝ p ∝ 1/st

r ∝ p / st

r = Kp / st

Cross multiply

r × st = Kp

Divide both side by p

K = rst / p => constant of variation

How to determine the constant of variation p = 12t = 2 s = one-sixth = 1/6r = 18Constant of variation (K) =?

K = rst / p

K = (18 × 1/6 × 2) / 12

K = 6 / 12

K = 1 / 2 = one-half

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A cylinder with radius 3 feet and height 5 feet is shown.
6
ft
Enter the volume, in cubic feet, of the cylinder. Round your
answer to the nearest hundredth.

Answers

Answer:

The volume of the cylinder is 141.23 cubic feet

Step by step explanation :

Given-

Radius of cylinder = 3 feet Height of cylinder = 5 feet

Now, we know that

[tex] \boxed {\mathfrak \red{ volume \: of \: cylinder = \pi {r}^{2} h}}[/tex]

where, r is the radius of the cylinder & h is the height of the cylinder.

Now,

Volume of the cylinder = [tex] \frac{22}{7} \times {3}^{2} \times 5[/tex]

[tex] = \frac{22}{7} \times 3 \times 3 \times 5[/tex]

[tex] = \frac{990}{7} [/tex]

[tex] = 141.428571[/tex] ( approximately )

[tex] = \boxed{ 141.43 \: \mathfrak { {ft}^{3}} }[/tex]

HELP ASAP !!!!!Consider the function f(x) = 10x and the function g(x), which is shown below. How will the graph of g(x) differ from the graph of f(x)? A. The graph of g(x) is the graph of f(x) shifted 6 units down. B. The graph of g(x) is the graph of f(x) shifted to the right 6 units. C. The graph of g(x) is the graph of f(x) shifted to the left 6 units. D. The graph of g(x) is the graph of f(x) shifted 6 units up.

Answers

Answer:

the answer is B, the graph of g(x) is the graph of f(x) shifted to the right 6 units. hope this helps!

Answer:

C. The graph of g(x) is the graph of f(x) shifted to the left 6 units.

Hope this helps and good luck!

In the diagram, ABCDE is a regular pentagon.
(a) Calculate /BAE.

(b) What is the name of the quadrilateral ABCD?

(c)The sides AE and CD are produced to meet at X.

(i) Calculate /EDX.

(ii) What type of quadrilateral is BDXE? Explain your answer.

Answers

The shape ABCDE is a regular pentagon with five sides, such that the five sides are congruent

Part A: Calculate ∠BAE

The angle BAE is a vertex angle, and it is calculated using:

BAE = 180 * (n - 2)/n

Where n= 5; i.e. the number of sides.

This gives:

BAE = 180 * (5 - 2)/5

Evaluate

BAE = 108°

Hence, the measure of angle BAE is 108°

Part B: The name of the quadrilateral ABCD

When the vertices A and B are joined together, the shape becomes a trapezoid.

Hence, the name of the quadrilateral ABCD is a trapezoid.

Part C (i) Calculate ∠EDX

See attachment for the new figure.

From the attached figure, we have:

∠EDX + ∠EDC = 180° ---- the sum of angles on a straight line

Where:

∠EDC = ∠BAE = 108°

So, we have:

∠EDX + 108° = 180°

Subtract 108° from both sides

∠EDX = 72°

Hence, the measure of angle EDX is 72 degrees

Part C (ii) What type of quadrilateral is BDXE?

The quadrilateral BDXE is a parallelogram.

This is so because the opposite sides of BDXE are parallel, but not congruent

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The number of bacteria on your hand increases by 40% every hour. If there were initially 800 bacteria placed on your hand, how much bacteria
will be on your hand after 3 hours?

Answers

Answer:

about 2195 bacteria

Step-by-step explanation:

After one hour: 800 * 1.4 = 1120

After two hours: 1120 * 1.4 = 1568

After three hours: 1568 * 1.4 = 2195.2

How much would a 20% tip be on a $65 restaurant bill?​

Answers

Answer:

13 dollars would be the answer you're welcome lol

Which graph represents the function
f(x) = (x + 4)(x + 1)(x - 3)
?

Answers

Answer:

Step-by-step explanation:

The graph that represents the function

f(x) = (x + 4)(x + 1)(x - 3)

crosses the x-axis three times: at x = -4, x = -1, and x = 3

because we apply the zero product rule and found the roots -4, -1, and 3

x+ 4= 0 → x = -4

x+1 = 0 → x = -1

x-3 = 0 → x = 3

Parallelogram Properties - Diagonals
delta math

Answers

Answer:

DE=18

Step-by-step explanation:

The reason is because that parallelogram ABCD has most of the sides equal to each other.

The length of DB = 36 and half of 36/2 gets us DE.

DE=36/2=18

DE=18 also equals to BE=18

Diagonals of a parallelogram bisect each other

So

DE+BE=DB

Putting DE=BE

2DE=DBDE=DB/2DE=36/2DE=18
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