Please help me solve this algebraic expression

Answer:

B. 7(6x – 1) and 42x – 7 is equivalent

Step-by-step explanation:

A. –3(3x + 5) and –9x + 5

=–3(3x + 5)=-9x-15 not equivalent

B. 7(6x – 1) and 42x – 7

7(6x – 1)=42x-7 equivalent

C. –6(4x – 3) and –6x

=–6(4x – 3)=-24+18 not equivalent

D. 5(2x + 3y) and 25xy

=5(2x + 3y)=10x+15y not equivalent.

Answer:

A)

Step-by-step explanation:

Linear functions are those whose graph is a straight line. A linear function has the following form. y = f(x) = a + bx. A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y

Answer:

See if this is helpful

Answer:

x³ - 1

Step-by-step explanation:

Given

(x - 1)(x² + x + 1)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x² + x + 1) - 1(x² + x + 1) ← distribute parenthesis

x³ + x² + x - x² - x - 1 ← collect like terms

= x³ - 1

Answer:

593

Step-by-step explanation:

[tex]490(2)^8^/^2^9 = 593.25[/tex]

593.25 ≈ 593

The number of bacteria after 8 hours is 593.

A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Number of bacteria placed in petri dish = 490

Time required for bacteria to double = 29 hours

Number of bacteria after 8 hours is

⇒ [tex]490(2)^{\frac{8}{29} }[/tex]

⇒ [tex]490(2)^{0.2758}[/tex]

⇒ [tex]490(1.2107)[/tex]

⇒ [tex]593.25149[/tex]

⇒ [tex]593[/tex]

Hence  we can conclude that the number of bacteria after 8 hours is 593.

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Option B is the 100% right answer

Answer:

6√2 is your answer

relationship between perpendicular and hypotenuse is given by sin angle

sin45=p/h

sin45=6/x

x=6/sin45=6√2

Answer:

$3.00

Step-by-step explanation:

6%=0.06----Convert the percentage into a decimal

0.06*$50=$3.00----Multiply the decimal by the total grocery bill and get $3.00!

Hope this helped

Answer:

36.8 ft.

9 ft. 2 inch = 9.2

9.2 x 2 = 18.4

9.2 x 2 = 18.4

18.4 + 18.4 = 36.8

Answer:

5

Step-by-step explanation:

Side QR is equal to PS.

QR = 2x + 3

PS = 4x - 7

Since both sides are equal, here is the equation:

2x + 3 = 4x - 7

x = 5

Answer:

what are the ordered pairs? then graph them and do the y axis number over the x axis number

Step-by-step explanation:

Answer: What do u need help with?

Step-by-step explanation:

Answer:

Step-by-step explanation:

Find the perimeter and area of the polygon with the given vertices P(-3,4), Q(1,4), R(-3,-2), S(3,-2)

We find the length of the sides of this polygon using the formula:

√(x2 - x1)² + (y2 - y1)2

Where (x1, y1) and (x2, y2)

P(-3,4), Q(1,4)

= √(1 -(-3))² + (4 - 4)²

= √4²

= √16

= 4 units

Q(1,4), R(-3,-2)

= √(-3 - 1)² + (-2 - 4)²

= √-4² + -6²

= √16 + 36

= √52

R(-3,-2), S(3,-2)

= √(3 - (-3))² + (-2 - (-2))²

= √6²+ 0

= √36

= 6 units

P(-3,4), S(3,-2)

= √(3 - (-3))²+ ( -2 - 4)²

= √6² + -6²

= √36 + 36

= √72 units

Answer:

She spent 7/15 of the day working on her project.

Step-by-step explanation:

Well we cant get a clear answer with the fractions 1/3 and 1/5, so we are going to have to turn them into equivalent fractions.

3 and 5 both have 15 LCD so:

1/3 x 5/5 = 5/15

1/5 x 3/3 = 3/15

5/15 + 3/15 = 8/15

15/15 - 8/15 = 7/15

She spent 7/15 of the day working on her project.

Hopefully this helps :3 Sorry if wrong :( Plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3

-Bee~

Answer:

let no of pigs=x

ducks=y

x+y=10.....(1)

4x+2y=36

2x+y=18....(2)

by(1)..y=10-x

putting vvalue

2x+10-x=18

x=8

ducks=8

Answer:

Conner's work is correct

Step-by-step explanation:

In exponent multiplication, if base are same, add the exponents.

[tex]a^{m}*a^{n} =a^{m+n}[/tex]

For example,

5² * 5³

5² = 5 * 5

5³ = 5* 5 * 5

5² * 5³ = 5 * 5 * 5 * 5 * 5 = 5⁵ = 5⁽²⁺³⁾

Answe

Step-by-step explanation:

Answer:

add 3.99 + 6.99 + 5.99 = 16.97 divide 14.50 by 16.97 you will get .854 multiply by 100 it is %85.4 that is the percentage he paid then he saves 100 - 85.4 = %14.6

Answer:

A

Step-by-step explanation:

Answer should be A

Powers multiply so

2*3=6

4*3= 12

(8^6)/(4^12)

Answer:

[tex]\frac{8^6}{4^{12}}[/tex]  A)

Step-by-step explanation:

[tex](\frac{8^2}{4^4} )^3\\\\\frac{8^6}{4^{12}}[/tex]

Exponent:

2 * 3 = 6

4 * 3 = 12

Answer:

36

Step-by-step explanation:

6+6=12 12+12=24 9+6=15 15+24=39

Answer:

Q= 5c

Step-by-step explanation:

Answer:

it 5.5⋅10−^8m

Step-by-step explanation:

Unless I'm missing something important here, you can find the difference between the two wavelengths by subtracting one from the other. Since you're interested in finding how much longer the wavelength associated with the orange light is, subtract the wavelength of the green light from the wavelength of the orange light. You know that the two measured wavelengths are 6.15 ⋅ 10 − 7 m → orange light 5.6 ⋅ 10 − 7 m → green light Therefore, the difference between the two wavelengths will be Δ wavelength = 6.15 ⋅ 10 − 7 m − 5.6 ⋅ 10 − 7 m = 5.5 ⋅ 10 − 8 m

Answer:

B. $63.19

Step-by-step explanation:

You will pay $63.19 for a item with original price of $78.99 when discounted 20%. In this example, if you buy an item at $78.99 with 20% discount, you will pay 78.99 - 15.798 = 63.19 dollars.

Answer:

15 units squared

Step-by-step explanation:

sorry if im wrong

Answer:

12

Step-by-step explanation:

Area of triangle + area of square + area of triangle = total area

(Area of a triangle: A = 1/2bh)

(Area of a square: A = bh)

Area of smallest triangle =

A = 1/2 (2) (2) = 2

Area of largest triangle=

A = 1/2 (2) (6) = 6

Area of the square =

A = 2 x 2 = 4

Total shape:

2 + 4 + 6 = 12

Answer:

-w+9>6w+8

-w+9 -8 >6w

-w+1>6w

1>7w

7w<1

w< 1/7

Step-by-step explanation:

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

w< 1/7

or

(-∞,1/7)

Answer:

37.5%

Step-by-step explanation:

30/80=37.5 percent

Answer:

37.5% of students say English is their favorite subject

Step-by-step explanation:

30/80=0.375----Divide the amount of students that like English(30) by the total amount of students who took the survey.(80)

0.375=37.5%----Turn your decimal answer to a percentage to get 37.5%!

Answer: 3.4

Step-by-step explanation:

7.2 - 3.8

The minimum point at [tex](6.2,3.8)[/tex] is [tex]3.4[/tex].

What is the trigonometry function?

Trigonometric functions are also known as Circular Functions can be simply defined as the functions of an angle of a triangle.

It means that the relationship between the angles and sides of a triangle are given by these trig functions.

Here given that,

In the trigonometry functions it intersects its midline at [tex](8.7, 7.2)[/tex], and it has a minimum point at [tex](6.2,3.8)[/tex].

So,

[tex]7.2 - 3.8=3.4[/tex]

So, the minimum point at [tex](6.2,3.8)[/tex] is [tex]3.4[/tex].

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The possible outlier may be [tex](0,1)[/tex] as the second component is not greater than second components of the remaining pairs in comparison.

In this data set, we observe that data set observes the rule that first component increases inasmuch the second component of the ordered pairs decreases. Thus, the possible outlier may be [tex](0,1)[/tex] as the second component is not greater than second components of the remaining pairs in comparison. [tex]\blacksquare[/tex]

To learn more on ordered pairs, we kindly invite to check this verified question: https://brainly.com/question/11740961

Answer:

c=10

Step-by-step explanation:

Hope it helps. Doing all your questions that you send XD

Answer:

10

Step-by-step explanation:

using the pythagorean theory the missing side would be [tex]c^{2}[/tex] bs its the hypotenuse so

[tex]a^{2} + b^{2} = c^{2}[/tex]

[tex]8^{2} + 6^{2} = c^{2}[/tex]

[tex]64 + 36 = c^{2}[/tex]

[tex]100 = c^{2}[/tex]

and the square root of 100 is 10, which makes your equation

[tex]c = 10[/tex]

Answer:

y = 6x - 20

Step-by-step explanation:

Perpendicular slope = 6

(3, -2)

y - y1 = m(x - x1)

y + 2 = 6(x - 3)

y + 2 = 6x - 18

y = 6x - 20

Answer:

Solution given:

equation of a line is:

y=-⅛x+4.......[1]

Comparing above equation with y=mx+c

we get

slope [m]=-⅛

let slope of another line is M

since the Lines are perpendicular

so m ×M=-1

we get

M=8

again

the another line passes through(x1,y1) (3,-2)

Equation of another line becomes:

(y-y1)=m2(x-x1)

(y+2)=8(x-3)

y+2=8x-24

8x-y=24+2

8x-y=26

[tex] \frac{8x}{26} - \frac{y}{26} = 1[/tex]

[tex] \frac{4x}{13} - \frac{y}{26} = 1[/tex]

is a required equation of a line in slope intercept form.

Answer:

for the x+27

the value of X would be 76.5 bc the whole line is 180 degrees so you do x+27+x=180 then you solve

2x=153 then divide and you get 76.5

Answer:

Step-by-step explanation:

The rule of 90° counterclockwise rotation about the origin:

Apply the rule to the point T:

Answer:

A(x,y)____rotation through 90°. >A'(-y,x)

Step-by-step explanation:

T(3,-4))____rotation through 90°. >T'(4,3)

R(2,3))____rotation through 90°. >R'(-3,2)

S(5,-1))____rotation through 90°. >S'(1,5)