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ioda
2 years ago
15

I really need help with these 4 questions, whoever answers CORRECTLY gets brainliest.

Mathematics
2 answers:
Citrus2011 [14]2 years ago
7 0

B
B
D
A
Explanation, I have a 128% in math rn…
Ann [662]2 years ago
7 0
<h3>1. Which ordered pair is a solution of the equation y = x - 4?</h3>

[ Option A ]

(2,6)

y = x - 4

6 = 2 - 4

6 = -2 ❎

[ Option B]

(6,2)

y = x - 4

2 = 6 - 4

2 = 2 ✔️

[Option C ]

(-2,6)

y = x - 4

6 = -2 - 4

6 = -6 ❎

[ Option D ]

(-6,2)

y = x - 4

2 = -6 - 4

3 = -10 ❎

<h3>2. Which value is a solution of the equation 3 - 2x = -5?</h3>

A. 2

B. 4✔️

C. -2

D. 1/5

<u>Step by step explanation :</u>

3 - 2x = -5

3 + 5 = 2x

8 = 2x

8/2 = x

<u>4 = </u><u>x</u>

<h3>3. Which ordered pair is a solution of the equation y = 5x?</h3>

A. (-2,10)

B. (-5,25)

C. (-3,15)

D. (-2,-10)✔️

<u>Step by step explanation :</u>

y = 5x

y/x = 5

(-10)/(-2) = 5

<h3>4. Which ordered pair is a solution of the equation y = -9x + 4?</h3>

A. (10,-86)

y = -9x + 4

-86 = -9(10) + 4

-86 = -90 + 4

-86 = -86 ✔️

B. (-4,-58)

y = -9x + 4

-58 = -9(-4) + 4

-58 = 36 + 4

-58 = 40 ❎

C. (6,-41)

y = -9x + 4

-41 = -9(6) + 4

-41 = -54 + 4

-41 = -50 ❎

D. (-6,57)

y = -9x + 4

-57 = -9(-6) + 4

-57 = 54 + 4

-57 = 58❎

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bekas [8.4K]

Answer:

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Step-by-step explanation:

Multiply 51 feet times 24 feet and then you get 1,224 ft.

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Step-by-step explanation:

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1 year ago
The function f(x) = x2 + 10x – 3 written in vertex form is f(x) = (x + 5)2 – 28. What are the coordinates of the vertex?
Alexxandr [17]
Vertex form uses the following formula:

y = a(x-h)^2 + k

Identify the values of h and k in your function:

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(h,k)
\text{Vertex: (-5, -28)}

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4 0
3 years ago
Question: How long does it take an investment to quadruple in value if it earns 4% simple interest per year?
Assoli18 [71]

Answer:

It takes 75 years for the investment to quadruple in value

Step-by-step explanation:

Simple Interest

This is a simple interest problem.

The simple interest formula is given by:

E = P*I*t

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

T = E + P

In this question:

4% simple interest per year, so I = 0.04.

Quadruple:

t when T = 4P.

The interest earned is:

T = E + P

4P = E + P

E = 3P

Now we find the time.

E = P*0.04*t

3P = P*0.04*t

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Given Ohm's Law, V=IR<br> which of the following operations will solve for I<br> I?
poizon [28]

Answer:

Divide both sides by "R".

V = IR

V/R = I

Step-by-step explanation:

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