PLEASE, I NEED HELP ASAP

Answer:

C. -2x - 2

The picture shows the work I did to get the answer.

Hope this helps!

Answer: I think the answer is x = 4

Step-by-step explanation: 28 = 7x

                                           /7       /7

                                             4   =  x

Answer:

Mean = 12.85714

Median = 15

Range = 15

Step-by-step explanation:

Mean:

5 + 15 + 10 + 20 + 15 + 10 + 15 = 90

90 / 7 = 12.85714

Median:

5, 10, 10, 15, 15, 15, 20

Median = 15

Range:

20 - 5 = 15

Answer:

The explicit formula is a[tex]_{n}[/tex] = 5 - 6n

Step-by-step explanation:

The explicit formula of the arithmetic sequence of the recursive formula

a[tex]_{1}[/tex] = first term; a[tex]_{n}[/tex] = a[tex]_{n-1}[/tex] + d is a[tex]_{n}[/tex] = a + (n - 1)d, where

∵ The recursive formula is a[tex]_{1}[/tex] = -1 and a[tex]_{n}[/tex] = a[tex]_{n-1}[/tex] - 6

→ Compare it with the formula above

∴ a = -1 ⇒ 1st term

∴ d = -6 ⇒ common difference

→ Substitute them in the form of the explicit formula

∵ a[tex]_{n}[/tex]  = -1 + (n - 1)(-6)

∴ a[tex]_{n}[/tex] = -1 + (-6)(n) - (-6)(1)

∴ a[tex]_{n}[/tex]  = -1 + -6n - (-6)

∴ a[tex]_{n}[/tex] = -1 - 6n + 6

→ Add the like term

∴ a[tex]_{n}[/tex] = 5 - 6n

∴ The explicit formula is a[tex]_{n}[/tex] = 5 - 6n

Answer:

=2

Step-by-step explanation:

Answer:

w= 2

Step-by-step explanation:

3-2w+4w=7. We move all terms to the left: 3-2w+4w-(7)=0,  Then we add all the numbers together, and all the variables: 2w-4=0. After, we move all terms containing w to the left, all other terms to the right: 2w=4, w=4/2

w=2

Answer:

Answer is D

Step-by-step explanation:

Answer:

ehh

Step-by-step explanation:

Answer:

15-67X/30X

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

Step-by-step explanation:

.6(2k-3)=3(4k+5) foil

1.2K-1.8=12k+15 subtract 1.5k from both sides

-1.8=10.8k+15 subtract 15 from both sides

-16.8=10.8k divide by 10.8

k= -1.5

Answer:

-6x - 8

Step-by-step explanation:

-2(3x+4) = -6x - 8

this means the -6x - 8 is equivalent

Answer:

the 2nd one

Step-by-step explanation:

-12 may be more in positive numbers but it is less in negative numbers

Given:

[tex]\cos^4 \alpha+\sin^4\alpha=\dfrac{1}{4}(3+\cos 4 \alpha)[/tex]

To prove:

The given statement.

Proof:

We have,

[tex]\cos^4 \alpha+\sin^4\alpha=\dfrac{1}{4}(3+\cos 4 \alpha)[/tex]

[tex]LHS=\cos^4 \alpha+\sin^4\alpha[/tex]

[tex]LHS=(\cos^2 \alpha)^2+(\sin^2 \alpha)^2[/tex]

[tex]LHS=(\cos^2 \alpha+\sin^2\alpha)^2-2\sin ^2\alpha\cos^2 \alpha[/tex]     [tex][\because a^2+b^2=(a+b)^2-2ab][/tex]

[tex]LHS=(1)^2-2(1-\cos^2 \alpha)\cos^2 \alpha [/tex]      [tex][\because \cos^2 \alpha+\sin^2\alpha=1][/tex]

[tex]LHS=1-2\cos^2 \alpha+2\cos^4 \alpha [/tex]

Now,

[tex]RHS=\dfrac{1}{4}(3+\cos 4 \alpha)[/tex]

[tex]RHS=\dfrac{1}{4}[3+(2\cos^2 2\alpha-1)][/tex]        [tex][\because \cos 2\theta=2\cos^2\theta -1][/tex]

[tex]RHS=\dfrac{1}{4}[2+2\cos^2 2\alpha][/tex]

[tex]RHS=\dfrac{1}{4}[2+2(2\cos^2 \alpha-1)^2][/tex]        [tex][\because \cos 2\theta=2\cos^2\theta -1][/tex]

[tex]RHS=\dfrac{1}{4}[2+2(4\cos^4 \alpha-4\cos \alpha+1)][/tex]        [tex][\because (a-b)^2=a^2-2ab+b^2][/tex]

[tex]RHS=\dfrac{1}{4}[2+8\cos^4 \alpha-8\cos \alpha+2][/tex]

[tex]RHS=\dfrac{1}{4}[4+8\cos^4 \alpha-8\cos \alpha][/tex]

[tex]RHS=1+2\cos^4 \alpha-2\cos \alpha[/tex]

[tex]RHS=1-2\cos^2 \alpha+2\cos^4 \alpha [/tex]

[tex]LHS=RHS[/tex]

Hence proved.

The equivalent expression is [tex]x^{16}y^{22}[/tex]

Answer:

35.84

Step-by-step explanation:

You would take 19% of 30.12$ by doing 30.12x0.19 to get 5.72.

you then add 5.72 to 30.12 to get your total of 35.84$

Answer:

560

Step-by-step explanation:

2 x (40+30) x 4

2 x 70 x 4

560

hope this helps, pls mark brainliest :D

560

Step-by-step explanation:

2 x (40+30) x 4

2 x 70 x 4

560

Answer:

Step-by-step explanation:

The slope of the line is m = -5

4 is your x1

-3 is your y1

Plug into the equation y - y1 = m(x - x1)

y + 3 = -5(x - 4)

y + 3 = -5x + 20

   -3             -3

y = -5x + 17

Answer:

x=26/3

Step-by-step explanation:

3x-10=16

add 10 to both sides

3x=16+10

simplify

3x=26

divide both sides by 3

x=26/3

Answer:

y=3x-2

Step-by-step explanation:

Answer:

no

Step-by-step explanation:

it does not have any (0,0) value

Answer:

The correct Option is Option A

Account B because the principal of Account B is $300 and the principal for Account A is $150

Step-by-step explanation:

Interest earned from Account A = $ 4.50

Interest earned from Account B = $22.50

Time t = 18 months

Interest rate for Account A = 2%

Interest rate for Account B = 5%

We need to find which account has greater principal

The formula used to calculate principal is: [tex]Interest=Principal\times r \times t[/tex]

where r is rate and t is time

Finding Principal for Account A:

Interest earned from Account A = $ 4.50

Time t = 18 months = 1.5 years

Interest rate for Account A = 2% = 0.02

Putting values and finding Principal

[tex]Interest=Principal\times r \times t\\4.50=Principal\times0.02\times1.5\\Principal=\frac{4.50}{0.02\times1.5} \\Principal=\frac{4.50}{0.03} \\Principal=150[/tex]

So, The Principal Amount for Account A = $150

Finding Principal for Account B:

Interest earned from Account B = $ 22.50

Time t = 18 months = 1.5 years

Interest rate for Account A = 5% = 0.05

Putting values and finding Principal

[tex]Interest=Principal\times r \times t\\22.50=Principal\times0.05\times1.5\\Principal=\frac{22.50}{0.05\times1.5} \\Principal=\frac{22.50}{0.075} \\Principal=300[/tex]

So, The Principal Amount for Account B = $300

So, the correct Option is Option A

Account B because the principal of Account B is $300 and the principal for Account A is $150

Answer:

TRUE

Step-by-step explanation:

Answer:

THE ANSWER IS TRUE

Answer:

=[tex]x^{2}[/tex]−7x+10

Answer:

da

Step-by-step explanation:

Answer: I believe it's / option 3: 6 gallons of white paint.

Answer:

-4x. 2. 5+5x.

each of them should be filled in different boxes

The solution of the given equation will be (-4)x² + (-3x) + (- 5).

An algebraic equation of the second degree in x is a quadratic equation. The quadratic equation is written as ax2 + bx + c = 0, where x is the variable, and a must not be zero.

For example 3x² + 6x + 8 = 0 here x has highest term as 3 and coefficient of x² is not zero

Given,

⇒ -4x² - 2x - 5( 1 + x )

⇒ -4x² - 2x - 5 - 5x

⇒  (-4) x² + (-3) x + (- 5).

Hence  (-4)x² + (-3x) + (- 5) will be the correct answer for the given expression.

For more about the quadratic equation,

https://brainly.com/question/17177510

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Answer:

x=-3

x=-4

Step-by-step explanation:

-2|7+2x|=-2

|7+2x|=1

7+2x=1

x=-3

7+2x=-1

x=-4