Which of the following are solutions to the equation below x^2+8x+16=2

Answers

Answer 1

Answer:

[tex]x_{1} =-4+\sqrt{2} \\x_{2} =-4-\sqrt{2} \\[/tex]

Step-by-step explanation:

Using quadratic formula:

[tex]\frac{-b+-\sqrt{b^{2} -4*a*c} }{2*a}[/tex]

We will have 2 solutions.

x^2+8x+16=2

x^2+8x+14=0

a= 1    b=8   c= 14

[tex]x_{1}= \frac{-8+\sqrt{8^{2}-4*1*14} }{2*1} \\\\x_{2}= \frac{-8-\sqrt{8^{2}-4*1*14} }{2*1} \\[/tex]

We can write:

[tex]x_{1}= \frac{-8+\sqrt{{64}-56} }{2} \\\\x_{2}= \frac{-8-\sqrt{{64}-56} }{2} \\[/tex]

[tex]x_{1}= -4+\frac{\sqrt{{64}-56} }{2} \\\\x_{2}= -4-\frac{\sqrt{{64}-56} }{2} \\[/tex]

so, we have:

[tex]x_{1}= -4+\frac{\sqrt{{}8} }{2} \\\\x_{2}=-4-\frac{\sqrt{{}8} }{2} \\[/tex]

simplifying we have:

[tex]x_{1}= -4+\frac{\sqrt{{}2*4} }{2} \\\\x_{2}= -4-\frac{\sqrt{{}2*4} }{2} \\[/tex]

Finally:

[tex]x_{1}= -4+\sqrt{2} \\\\x_{2}= -4-\sqrt{2} \\[/tex]


Related Questions

if A= (4,-5) and b=(7,9) what is the length of ab?

Answers

Answer:

14.3178210633

Step-by-step explanation:

distance formula, d= sq root of ((x2-x1)^2+(y2-y1)^2)

Answer:

ab = [tex]\sqrt{42}[/tex].

Step-by-step explanation:

Given  : A= (4,-5) and b=(7,9).

To find : what is the length of ab.

Solution : We have given that  A= (4,-5) and b=(7,9).

Distance formula : [tex]\sqrt{(x_{2}-x_{1}(y_{2} -y_{1})}[/tex].

Here, [tex]x_{1} =4[/tex]

[tex]x_{2} =7[/tex]

[tex]y_{1} =-5[/tex]

[tex]y_{2} =9[/tex].

Then   [tex]\sqrt{(7-4)(9-(-5))}[/tex].

ab = [tex]\sqrt{(3)(14)}[/tex].

ab = [tex]\sqrt{42}[/tex].

Therefore, ab = [tex]\sqrt{42}[/tex].

Mr.Rector bought an 8-ounce bottle of juice. He accidentally knocked it over and spill 1/4 of the juice. How many ounces of juice does she have left to quench his thirst?

Answers

Answer:

6 oz

Step-by-step explanation:

If he spilled 1/4 of the juice, then he has 3/4 of the original volume left.

(3/4)(8 oz) = 6 oz.

He has 6 oz left to enjoy.

The equation of the graphed line is 2x - y =-6
What is the x-intercept of the graph?
-3,-2,2,6
PLEASE ANDWER ASAP

Answers

Answer:

The x intercept = -3

Step-by-step explanation:

The x intercept is where it crosses the x axis.

Looking at the graph, it crosses at x =-3

Using the equation, we set y=0 and solve for x

2x-y =-6

2x -0 =-6

2x = -6

Divide by 2

2x/2 =-6/2

x=-3

Answer: A

Step-by-step explanation:

Edgen 2023

In △ABC, m∠A=15°, a=9, and b=12. Find c to the nearest tenth.

Answers

Answer:

=20.0

Step-by-step explanation:

We can first find the angle B using the sine rule as follows:

a/Sin A=b/Sin B

9/Sin 15=12/ Sin B

Sin B= (12 Sin 15)/9

=0.345

B=Sin⁻¹ 0.345

=20.18°

We then find C by using the summation of the interior angles of a triangle.

C=180-(20.18+15)

=144.82

Finding the length of c:

a/Sin A= c/ Sin C

9/Sin 15=c/Sin 144.82

c=(9 Sin 144.82)Sin 15

=20.0

Answer:

20.0 unit ( approx )

Step-by-step explanation:

Here,

ABC is a triangle in which,

m∠A=15°, a=9, and b=12,

By the law of sine,

[tex]\frac{sin A}{a}=\frac{sin B}{b}=\frac{sin C}{c}----(1)[/tex]

[tex]\frac{sin A}{a}=\frac{sin B}{b}[/tex]

[tex]\implies sin B=\frac{b sin A}{a}[/tex]

By substituting the values,

[tex]\implies sin B=\frac{12\times sin 15^{\circ}}{9}\approx 0.3451[/tex]

[tex]\implies B \approx 20.19^{\circ}[/tex]

Now, by the property of triangle,

m∠A + m∠B+ m∠C = 180°

⇒ m∠C = 180° - 15° - 20.19° = 144.81°,

By the equation (1),

[tex]c=\frac{b sin C}{sin B}=\frac{12\times sin 144.81^{\circ}}{sin 20.19^{\circ}}=20.0370532419\approx 20.0[/tex]

The equation -2x2-8x = 10is rewritten in the form of -2(x-p)2+q = 0. What is the value of q?

Answers

Answer:

q = -2

Step-by-step explanation:

-2x²-8x = 10 (divide both sides by -2)

x² + 4x = -5 (Apply completing the square method)

x² + 4x + (4/2)²= -5 + (4/2)²

x² + 4x + 2²= -5 + 2²    (reduce left hand side using a²+2ab+b² =  (a+b)² )

(x+2)² = -5 +4

(x+2)² = -1

(x+2)² + 1 = 0   (multiply both sides by -2)

(-2)(x+2)² + 1 (-2) = 0

-2[x - (-2)]² + (-2) = 0  ---> compare this with -2(x-p)² + q = 0

We can see that p = 2 and q = -2

Final answer:

The value of 'q' in the rearranged form of the given quadratic equation -2(x-p)²+q = 0 is -6. This is obtained by completing the square and comparing the equations.

Explanation:

Given the quadratic equation -2x² -8x = 10, it's rearranged to the form -2(x-p)²+q = 0. The objective is to find the value of 'q'.

To achieve this, you first need to rewrite the given equation -2x² -8x - 10 = 0 in the form -2(x-h)²+k = 0. This is called completing the square. The 'h' value here is equal to -b/2a, where 'b' is the coefficient of 'x' and 'a' is the coefficient of x². In this equation, a is -2 and b is -8 so h=(-(-8)/(2×(-2))=8/4=2.

Substituting h into the equation, you have -2(x-2)²+k=0. Now expand and simplify to get -2x²+8x-4+k=0. Comparing this with the original equation -2x² -8x -10 = 0, you can see that 'k' is equal to -10+4=-6, which is the 'q' value in the form -2(x-p)²+q = 0. So, the value of 'q' is -6.

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Determine whether the relations represent y as a function of x.

Answers

Answer:

Both of those are functions.

Step-by-step explanation:

[tex]y=x^2[/tex] is a parabola that opens up.

Any upward or downward parabola is a function because they pass the vertical line test.

[tex]x=\pm \sqrt{1-y}{/tex]

Square both sides:

[tex]x^2=1-y[/tex]

Subtract 1 on both sides:

[tex]x^2-1=-y[/tex]

Multiply both sides by -1:

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

So this is a another parabola and it is faced down.  So this is also a function.

[tex]y=ax^2+bx+c[/tex] wit [tex]a \neq 0[/tex] willl always be a parabola.  

If [tex]a>0[/tex] then it is open up.

If [tex]a<0[/tex] then it is open down.

Upwards and downward parabolas will always be functions.

[tex]x=ay^2+by+c[/tex] are also parabolas but these open to the left or right.  These will not be functions because they will not pass the vertical line test.  

The cost of a book was decreased from 60 to 50 by what percent the price decrased with solution​

Answers

Answer:

The price decreased by 16 1/3%, or approximately 16.3%

Step-by-step explanation:

Use the formula for percent change. If the answer is negative, it is a percent decrease. if the answer is positive, it is a percent increase.

percent change = (new price - old price)/(old price) * 100%

In this case, use:

new price = 50

old price = 60

percent change = (new price - old price)/(old price) * 100%

percent change = (50 - 60)/60 * 100%

percent change = -10/60 * 100%

percent change = -1/6 * 100%

percent change = -100/6% = -50/3% = -16 1/3%

The price decreased by 16 1/3%, or approximately 16.3%

6.789 the digits 8 stand for

Answers

Answer:

8/100.   Eight hundredths  or we can write it as 8 * 10^-2.

Step-by-step explanation:

The first digits after the decimal point is  tenths ( 7 tenths) and the second is hundredths, the third is thousandths.

if 1/2 of a gallon of paint covered 1/4 of the wall how much does it take to cover the whole wall???

Answers

Answer:

2 gallons

Step-by-step explanation:

If you use one whole gallon, you will have covered 2/4.

When you simplify this fraction, you get 1/2. This means you have another half to cover.

So, 1 gallon plus another gallon is 2.

Answer:

2 gallons of paint.

Step-by-step explanation:

Since [tex]\frac{1}{2}[/tex] gallon of paint covered = [tex]\frac{1}{4}[/tex] of the wall.

Therefore, 1 gallon of paint covered = 1 × [tex]\frac{1}{4}[/tex] = [tex]\frac{2}{4}[/tex] = [tex]\frac{1}{2}[/tex] of the wall.

To paint 1 wall we need the paint = [tex]\frac{1}{\frac{1}{2} }[/tex] = [tex]1\times\frac{2}{1}[/tex] gallon of paints

                                                      = 2 gallons of paint.

2 gallons of paint covers the whole wall.

Gabriel Is making a mixture of compost and soil to use for a special plant. He wants his Final mix to be two parts compost to 10 parts potting soil. he wants to end up with 6 kg of mix. How many kg of compost should Gabrial use?

Answers

well, so we know the ratio of compost to soil is 2 : 10, or namely 2/10 which simplifies to 1/5 or namely the ratio of 1 : 5.

the mix will be 6 kgs total, so we'll simply divide the whole amount by (1 + 5), the sum of the ratios, and then distribute accordingly.

[tex]\bf 2:10\implies 1:5\qquad \qquad \cfrac{compost}{soil}\qquad \cfrac{1\cdot ~~\frac{6}{1+5}~~}{5\cdot \frac{6}{1+5}}\implies \cfrac{1\cdot 1}{5\cdot 1}\implies \cfrac{\stackrel{compost}{\boxed{1~kg}}}{5~kg}[/tex]

Answer:

Gabriel Is making a mixture of compost and soil to use for a special plant. He wants his Final mix to be two parts compost to 10 parts potting soil. he wants to end up with 6 kg of mix. How many kg of compost should Gabriel use?

Step-by-step explanation:

We have a total of 12 parts, where 2 are compost, and on the other hand 6 kg which is the total of the whole mixture, divided by 12; 6/12 = 0.5 would be each of the parts, we multiply it by 2; 0.5 x 2 = 1 kg would be the part of compost, and 0.5 x 10 = 5 kg would be the part of potting soil which added, gives us the total 6 kg.

Which expression is equivalent to 10x^2y + 25x^2?
A)5x^2(2y + 5)
B)5x^2y(5 + 20y)
C)10xy(x + 15y)
D)10x^2(y + 25)

Answers

Answer:

[tex]\large\boxed{A)\ 5x^2(2y+5)}[/tex]

Step-by-step explanation:

[tex]10x^2y+25x^2=(5x^2)(2y)+(5x^2)(5)\qquad\text{distributive}\\\\=5x^2(2y+5)[/tex]

The value of equivalent expression is,

⇒ 5x² (2y + 5)

We know that;

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Here, Given that;

The expression is,

⇒ 10x²y + 25x²

Now, We can simplify the expression as;

⇒ 10x²y + 25x²

⇒ 2×5x²y + 5×5x²

⇒ 5x² (2y + 5)

Thus, The value of equivalent expression is,

⇒ 5x² (2y + 5)

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If f(x) = 3x - 4, which of these is the inverse of f(x)?
A. f^-1(x) = x/3 +4
B. F^-1(x) = x/3 -4
C. f^-1(x) = x+4/3
D. F^-1(x) = x-4/3​

Answers

The answer is C) F^-1(x) = x+4/3. Please let me know if you need further clarification.

Answer:

[tex]f^{-1}(x)=\frac{x+4}{3}[/tex]

C is the correct option.

Step-by-step explanation:

The given function is [tex]f(x)=3x-4[/tex]

Replace f(x) with y

[tex]y=3x-4[/tex]

Interchange x and y as shown below

[tex]x=3y-4[/tex]

Solve the equation for y

[tex]x+4=3y\\\\y=\frac{x+4}{3}[/tex]

Therefore, the inverse of f(x) is given by

[tex]f^{-1}(x)=\frac{x+4}{3}[/tex]

C is the correct option.

ABCD is a parallelogram. Find the values of x and y. Solve for the value of z, if z=x−y.
A. -10
B. -20
C. 20
D. 30

Answers

Answer:

C

Step-by-step explanation:

Parallel and opposite sides of a parallelogram are equal. Hence, we can say:

x + 30 = 2x - 10

and

2y-10 = y +10

Solving first one, we get:

x + 30 = 2x - 10

30+10 = x

x = 40

Also

2y - 10 = y + 10

y = 10 + 10

y = 20

Now, z = x - y, so

z = 40 - 20 = 20

Answer C is right.

I can confirm that the answer is right.

Parallelograms have equal opposite sides. Do the math:

x - y = z

40 - 20 = 20

z = 20

HELPPP MEEEEEE PLEASE

Answers

Step-by-step explanation:

We arrange numbers in ascending order

Range - numbers appearing (without repetition)

Median - middle value

Mean - the sum of the numbers divided by the number of items

Mode - the value that appears most often.

[tex]\bold{Q4.}\\\\22,\ 36,\ 39,\ 39,\ 40,\ 40,\ 41,\ 42,\ 45,\ 46,\ 46,\ 49\\\\\bold{Range:}\ 22,\ 36,\ 39,\ 40,\ 41,\ 42,\ 45,\ 46,\ 49\\\\\bold{Median:}\ 40,\ 41\to\dfrac{40+41}{2}=40.5\\\\\bold{Mean:}\ \dfrac{22+36+39+39+40+40+41+42+45+46+46+49}{12}=40\dfrac{5}{12}\\\\\bold{Mode:}\ 39,\ 40\ and\ 46[/tex]

[tex]\bold{Q5.}\\\\79,\ 83,\ 84,\ 86,\ 86,\ 90,\ 94\\\\\bold{Range:}\ 79,\ 83,\ 84,\ 86,\ 90,\ 94\\\\\bold{Median}:\ 86\\\\\bold{Mean:}\ \dfrac{79+83+84+86+86+90+94}{7}=86\\\\\bold{Mode:}\ 86[/tex]

Find the radius of the circle with equation x²+y²+8x+8y+28=0

Answers

Hello!

The answer is:

Center: (-4,-4)

Radius: 2 units.

Why?

To solve the problem, using the given formula of a circle, we need to find its standard equation form which is equal to:

[tex](x-h)^{2}+(y-k)^{2}=r^{2}[/tex]

Where:

"h" and "k" are the coordinates of the center of the circle and "r" is its radius.

So, we need to complete the square for both variable "x" and "y".

The given equation is:

[tex]x^{2}+y^{2}+8x+8y+28=0[/tex]

So, solving we have:

[tex]x^{2}+y^{2}+8x+8y=-28[/tex]

[tex](x^2+8x+(\frac{8}{2})^{2})+(y^2+8y+(\frac{8}{2})^{2})=-28+((\frac{8}{2})^{2})++(\frac{8}{2})^{2})\\\\(x^2+8x+16 )+(y^2+8y+16)=-28+16+16\\\\(x^2+4)+(y^2+4)=4[/tex]

[tex](x^2-(-4))+(y^2-(-4))=4[/tex]

Now, we have that:

[tex]h=-4\\k=-4\\r=\sqrt{4}=2[/tex]

So,

Center: (-4,-4)

Radius: 2 units.

Have a nice day!

Note: I have attached a picture for better understanding.

Final answer:

The radius of the circle is 2 units.

Explanation:

To find the radius of the circle with equation x²+y²+8x+8y+28=0, we need to rearrange the equation into the standard form (x-h)²+(y-k)²=r², where (h,k) is the center of the circle and r is the radius. By completing the square, we can rewrite the equation as (x+4)²+(y+4)²=4.

Comparing this with the standard form, we can see that the center of the circle is (-4,-4) and the radius is √4 = 2. Therefore, the radius of the circle is 2 units.

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Which part of the ear carries sound messages to the brain?

eardrum
bones of the middle ear
ear canal
auditory nerve

Answers

Answer:

auditory nerve

Step-by-step explanation:

the auditory nerve carries sound signals to the brain. The cochlea picks up sound waves and makes nerve signals.

Answer:

The auditory nerve

Step-by-step explanation:

Explain how to multiply a monomial and a polynomial that is not monomial. Give examples .

Answers

Answer:

See below.

Step-by-step explanation:

To multiply a monomil by a polynomial, multiply the monomial by each term of the polynomial.

Example: Multiply 3x^2 by 4x^2 + 5x - 2

3x^2(4x^2 + 5x - 2) =

= 3x^2 * 4x^2 + 3x^2 * 5x + 3x^2 * (-2)

= 12x^4 + 15x^3 - 6x^2

Final answer:

To multiply a monomial and a polynomial that is not monomial, distribute the monomial term to each term of the polynomial, and then simplify the resulting expression by combining like terms.

Explanation:

To multiply a monomial and a polynomial that is not monomial, distribute the monomial term to each term of the polynomial, and then simplify the resulting expression by combining like terms.

For example, let's multiply the monomial 3x^2 by the polynomial 4x^3 + 2x - 1:

Multiply 3x^2 by 4x^3, which gives 12x^5. Multiply 3x^2 by 2x, which gives 6x^3. Multiply 3x^2 by -1, which gives -3x^2. Combine these terms: 12x^5 + 6x^3 - 3x^2.

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What is absolute value?

Answers

Answer:

Absolute value means the distance between a number and 0.

Examples:

The absolute value of -7 is 7.

The absolute value of 5 is 5.

Key Concepts:

The absolute value sign is |x|, where x is any real number.

The absolute value removes any negative sign in front of a number.

Absolute value is an important math concept to understand. To represent the absolute value of a number, we use a vertical bar on either side of the number. Absolute value means "distance from zero" on a number line. Let's try an example to understand how absolute value works.

What is the absolute value of 4 and -4?

To find the absolute value of 4, we know that 4 is 4 units from zero on a number line. Therefore, the absolute value of 4 is 4.

For the absolute value of -4, we know that -4 is also 4 units from zero on the number line. Therefore, the absolute value of -4 is also 4.

Another way that I like to think about absolute value is no matter what number you have inside the absolute value, the result will always be positive. In other words, the absolute value of any number is the positive version of that number.

For every real number x,y, and z the statement (x-y)z=xz-yz is

Answers

Answer:

true.

Step-by-step explanation:

(x - y)z = xz - yz

Apply the distributive property of multiplication over addition to the left side:

(x - y)z =

= z(x - y)

= xz - yz

This is the same as the right side, so the statement is true.

What is the solution of the system of equations? -y+3x=6 y=-6x+12

Answers

Answer:

x = 2

y = 0

Step-by-step explanation:

We can solve using substitution, substitute y in the first equation with the second equation:

-(-6x + 12) + 3x = 6

Distribute the negative sign:

6x - 12 + 3x = 6

Combine like terms:

9x - 12 = 6

Isolate the variable and solve for x by adding 12 in both sides:

9x = 18

x = 2

Substitute 2 with x in any equation to find the value of y:

-y + 3(2) = 6

-y + 6 = 6

Subtract 6 in both sides to isolate the variable:

-y = 0

0/-1 = 0

y = 0

Our answer would be x = 2 and y = 0

Answer:

(2,0)

Step-by-step explanation:

I'm going to use substitution since one of the variables in one of the equation is already solved for.

-y+3x=6

y=-6x+12

I'm going to replace the first y with the second y which is (-6x+12).

This gives me:

-(-6x+12)+3x=6

Distribute:

6x-12+3x=6

Combine like terms:

9x-12=6

Add 12 on both sides:

9x=18

Divide both sides by 9:

x=2

If x=2 and y=-6x+12, then y=-6(2)+12=-12+12=0.

The solution (the intersection) is (2,0).

What is 0.03 (with the 3 repeating)/0.03 (with both the 0 and the 3 repeating) Express your answer as a mixed number.

Answers

[tex]0.0\overline{3}=\dfrac{1}{30}\\0.\overline{03}=\dfrac{1}{33}\\\\\dfrac{0.0\overline{3}}{0.\overline{03}}=\dfrac{\dfrac{1}{30}}{\dfrac{1}{33}}=\dfrac{1}{30}\cdot33=\dfrac{11}{10}=1\dfrac{1}{10}[/tex]

In a geometric progression of positive terms, the 5th term is 9 times the 3rd term and the sum of the 6th and 7th terms is 972. Find the
a) common ratio
b) sum of the first 6 terms

Answers

Answer:

a) 3

b) 364

Step-by-step explanation:

A geometric sequence in explicit form is [tex]a_n=a_1 \cdot r^{n-1}[/tex] where [tex]a_1[/tex] is the first term and [tex]r[/tex] is the common ratio.

We are given:

[tex]a_5=9 \cdot a_3[/tex]

[tex]a_6+a_7=972[/tex].

What is a) r?

What is b) the sum of the first 6 terms?

So I'm going to use my first equation and use my explicit form to find those terms in terms of r:

[tex]a_1 \cdot r^4=9 \cdot a_1 \cdot r^{2}[/tex]

Divide both sides by [tex]a_1r^2[/tex]:

[tex]r^2=9[/tex]

[tex]r=\sqrt{9}[/tex]

[tex]r=3[/tex].

So part a is 3.

Now for part b).

We want to find [tex]a_1+a_2+a_3+a_4+a_5+a_6[/tex].

So far we have:

[tex]a_1=a_1[/tex]

[tex]a_2=3a_1[/tex]

[tex]a_3=3^2a_1[/tex]

[tex]a_4=3^3a_1[/tex]

[tex]a_5=3^4a_1[/tex]

[tex]a_6=3^5a_1[/tex].

We also haven't used:

[tex]a_6+a_7=972[/tex].

I'm going to find these terms in terms of r (r=3).

[tex]3^5a_1+3^6a_1=972[/tex]

[tex]243a_1+729a_1=972[/tex]

You have like terms to add:

[tex]972a_1=972[/tex]

Divide both sides by 972:

[tex]a_1=1[/tex]

The first term is 1 and the common ratio is 3.

The terms we wrote can be simplify using a substitution for the first term as 1:

[tex]a_1=a_1=1[/tex]

[tex]a_2=3a_1=3(1)=3[/tex]

[tex]a_3=3^2a_1=9(1)=9[/tex]

[tex]a_4=3^3a_1=27(1)=27[/tex]

[tex]a_5=3^4a_1=81(1)=81[/tex]

[tex]a_6=3^5a_1=243(1)=243[/tex].

Now we just need to find the sum of those six terms:

1+3+9+27+81+243=364.

What is the product of Seven square root eight times four square root five? Simplify your answer. Twenty eight radical ten Fifty six radical two Fifty six radical ten Two hundred eighty radical four

Answers

Answer:

56√10.

Step-by-step explanation:

7√8 * 4√5

= 28 √40

= 28 √4√10

= 28 * 2√10

= 56√10.

Answer:

56[tex]\sqrt{10}[/tex]

Step-by-step explanation:

Using the rule of radicals

[tex]\sqrt{a}[/tex] × [tex]\sqrt{b}[/tex] ⇔ [tex]\sqrt{ab}[/tex]

Given

7[tex]\sqrt{8}[/tex] × 4[tex]\sqrt{5}[/tex]

= 7 × 4 × [tex]\sqrt{8(5)}[/tex]

= 28 × [tex]\sqrt{40}[/tex]

= 28 × [tex]\sqrt{4(10)}[/tex]

= 28 × [tex]\sqrt{4}[/tex] × [tex]\sqrt{10}[/tex]

= 28 × 2 × [tex]\sqrt{10}[/tex]

= 56[tex]\sqrt{10}[/tex]

through: (2,2), parallel to y=x+42)

Answers

Answer:

y=x

Step-by-step explanation:

We want a line parallel to y =x+42

The slope of y =x+42 is 1

Parallel lines have the same slope

We have the slope m=1 and a point (2,2)

We can use point slope form to write a line

y-y1 = m(x-x1)

y-2 = 1(x-2) point slope form

Changing to slope intercept form

y-2 = x-2

Add 2 to each side

y-2+2 = x-2+2

y=x

Final answer:

The line parallel to y = x + 42 travels through (2,2) can be represented by the equation y = x. This conclusion is based on the principles of line equations in a two-dimensional space, with slopes determining the parallelism of lines.

Explanation:

The subject of the question pertains to the formula of a line in a two-dimensional space. Specifically, you're asked to find a line that passes through the point (2,2) and is parallel to the line described by the equation y = x + 42.

In a standard equation of a line, y = mx + b, 'm' represents the slope of the line and 'b' indicates the y-intercept. Two lines are parallel if they have the same slope. Bearing this in mind, as the line y = x + 42 has a slope of 1 (since 1 is the coefficient of 'x'), the required line would also possess a slope of 1.

Substituting the point coordinates (2,2) into the equation y = mx + b (replacing 'm' with 1), gives us 2 = 2 + b. Solving for 'b', we find that it equals zero. Hence, the equation of a line parallel to y = x + 42 passing through the point (2,2) is y = x.

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Jenna bought a bike for $200. The value of the bike decreases by 5% each year. Write an equation to model the situation.

A. y = 200(0.95)x
B. y = 200(0.5)x
C. y = 195(0.95)x
D. y = 95(0.95)x

Answers

B- because that’s the only one that makes sense

One angle measure in an acute isosceles triangle is 20°. What is the measure of one of the other angles?

80°
20°
140°
160°

Answers

Answer:

Option 2) 20°

Step-by-step explanation:

Step 1: Write relevant properties of triangle.

All 3 sides of a triangle are equal to 180 degrees.

In an isosceles triangle, 2 sides and 2 angles are same.

Step 2: Calculate another angles

Since it is an isosceles triangle, two sides will be same therefore, 2 angles will be same.

Angle 1 = Angle 2 = 20 degrees (because isosceles triangle)

Therefore, 20° is the measure of one of the other angles.

Option 2

!!

Answer: FIRST OPTION.

Step-by-step explanation:

It is important to remember that an Acute Isosceles triangle has two congruent sides and all its angles measure less than 90 degrees. Then, the third option and the the fourth option are not one of the other angles.

You know that the sum of the interior angles of a triangle is 180 degrees.

Then, let be "x" one the other angles, let's check the first option:

[tex]80\°+20\°+x=180\°\\x=80\°[/tex]

Since [tex]80\°<90\°[/tex], the angle provided in the first option is one of the other angles.

 Let's check the second option:

[tex]20\°+20\°+x=180\°\\x=140\°[/tex]

Since [tex]140\°>90\°[/tex], the angle provided in the second option is not one of the other angles.

Graph -3x + 9y = -27

Answers

Answer:

So the x-intercept is (9,0) and the y-intercept is (0,-3).

So I'm going to graph both points and connect them with a straight-edge.

Step-by-step explanation:

I would graph this using it's x- and y-intercepts.

To find the x-intercept, set y=0.

-3x+9(0)=-27

-3x+0=-27

-3x=-27

Divide both sides by -3:

x=9

To find the y-intercept, set x=0:

-3(0)+9y=-27

 0  +9y=-27

       9y=-27

Divide both sides by 9:  

        y=-3

So the x-intercept is (9,0) and the y-intercept is (0,-3).

So I'm going to graph both points and connect them with a straight-edge.

What is the value of n in the equation
1/2(n-1) - 3 = 3 - (2n + 3)?

Answers

Hey there! :)

1/2(n - 1) - 3 = 3 - (2n + 3)

Simplify.

1/2n - 1/2 - 3 = 3 - 2n - 3

Add like terms.

1/2n - 3 1/2 = -2n

Add 3 1/2 to both sides.

1/2n = -2n + 3 1/2

Then, add 2n to both sides.

1/2n + 2n = 3 1/2

Simplify!

2 1/2n = 3 1/2

Make everything into improper fractions!

5/2n = 7/2

Multiply everything by 2 to get rid of the denominators.

5/2n × 2 = 7/2 × 2

Simplify!

5n = 7

Divide both sides by 5.

n = 7/5

Hope this helped! :)

Answer:

[tex]\frac{7}{5} = n[/tex]

Step-by-step explanation:

[tex] \frac{1}{2} (n - 1) - 3 = 3 - (2n + 3) \\ [/tex]

Solve the brackets.

[tex] \frac{n}{2} - \frac{1}{2} - 3 = 3 - 2n - 3 \\ [/tex]

Make the denominator the same to solve the fractions.

[tex] \frac{n}{2} - \frac{1}{2} - \frac{3 \times 2}{1 \times 2} = 3 - 2n - 3 \\ [/tex]

Combine like terms.

[tex] \frac{n}{2} - \frac{1}{2} - \frac{6}{2} = - 2n \\ \\ \frac{n - 7}{2} = - 2n \: \: \: \: \: \: \: \: [/tex]

Use cross multiplication to solve for n.

[tex]n - 7 = - 4n \\ \\ - 7 = - 4n - n \\ \\ - 7 = - 5n \: \: \: \: \: \: \\ \\ \frac{ - 7}{ - 5} = \frac{ - 5n}{ - 5} \: \: \: \: \\ \\ \frac{7}{5} = n \: \: \: \: \: \: \: [/tex]

The area of the rectangle is
square inches.

Answers

Answer:

42

Step-by-step explanation:

all I did was multiply 6 by 7 and i got 42

Like terms can be added or subtracted true or false

Answers

The answer is True. I’m just using up characters now
Since adding or subtracting unlike terms is like mixing apples and oranges -- only like terms can be combined. To combine like terms, add the coefficients and multiply the sum by the common variables.

I hope you understand
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