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2 years ago

PLEASE HURRY!!!!

Mathematics

1 answer:

mestny [16]2 years ago

4 0

d !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!

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What is the slope of the line that passes through the pair of points (-1, 4), (3,12)

Nadya [2.5K]

Answer:

$\displaystyle m = 2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Identify

Point (-1, 4)

Point (3, 12)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m = \frac{12-4}{3--1}$
[Fraction] Subtract: $\displaystyle m = \frac{8}{4}$
[Fraction] Divide: $\displaystyle m = 2$

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3 years ago

3. Use method of completing the square to evaluate 2x^2+ 5x = 8

Zina [86]

Answer:

x= -5- $\sqrt{89}$ /4, - 5+ $\sqrt{89}$ /4

Step-by-step explanation:

solve the equation for x by finding a,b, and c of the quadratic then applying the quadratic formula (the full thing under "answer:" is the exact answer

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2 years ago

On weekday mornings, it takes Leo 12 minutes to bike 2 miles to his school. This Saturday, Leo will bike to the park to meet his

marshall27 [118]

Answer:

30 minutes to the park

Step-by-step explanation:

12/2 = 6 min per mile

6 x 5 = 30 mins for 5 miles

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3 years ago

Emily spent a total of $38.04 on four CDs in a CD cost the same amount what is a reasonable amount for the cost of each city exp

pashok25 [27]

In order to find the cost of each CD, you would have to divide $38.04 by 4 CDs and you would get $9.51 as the cost of each CD. If you want to check if your answer is correct, you can either add $9.51 four times to get $38.04 or you can multiply $9.51 x 4 and you should get $38.04 remember that multiplication is always a way to check your answer for division problems and division is always a way to check an answer to your multiplicatiom problems. Just search it up for more info. Hope i helped! :)

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2 years ago

If cosX = -0.2, and x is in quadrant II, then what it the value of sinX

Tems11 [23]

$\sin x>0$ when $x$ is in quadrant II, so

$\cos^2x+\sin^2x=1\implies\sin x=\sqrt{1-\cos^2x}=\sqrt{1-(-0.2)^2}\approx1.02$

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3 years ago

Read 2 more answers