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4 years ago

Percent increase and decrease. Before: 10 After: 12

Mathematics

1 answer:

alexandr402 [8]4 years ago

7 0

Answer:

The percentage increase:20%

Step-by-step explanation:

Here's why the answer is simple since the Initial Number=10 we know that 20 percent of 10 is 2. Since the number increased by 2, therefore it increased 20 percent.

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What is an equation in point-slope form for the line that passes through the points (-3,5) and (2, -3)?

zloy xaker [14]

Answer:

y - 5 = -8/7(x + 3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Point-Slope Form: y - y₁ = m(x - x₁)

x₁ - x coordinate
y₁ - y coordinate
m - slope

Step-by-step explanation:

Step 1: Define

Point (-3, 5)

Point (2, -3)

Step 2: Find slope m

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

Substitute [SF]: $m=\frac{-3-5}{2+5}$
Subtract/Add: $m=\frac{-8}{7}$

Step 3: Write Equation

Plug in variables into the general form.

y - 5 = -8/7(x + 3)

y + 3 = -8/7(x - 2)

3 0

3 years ago

If a triangle has a height of 14 inches and a base of 9 inches, what is area?

Ugo [173]

Answer:

The area of the triangle is $A=63\ in^2$

Step-by-step explanation:

we know that

The area of a triangle is equal to

$A=\frac{1}{2}(b)(h)$

where

b is the base of triangle

h is the height of triangle

we have

$b=9\ in\\h=14\ in$

substitute in the formula

$A=\frac{1}{2}(9)(14)$

$A=63\ in^2$

4 0

3 years ago

Find the inverse of the function.

asambeis [7]

Answer:

A) $f^{-1}(n)= (n+2)^3$

Step-by-step explanation:

$f(n) = \sqrt[3]{n} -2$

$y = \sqrt[3]{n} -2$

$y = n^{1/3}-2$

$n = y^{1/3} -2$

$n + 2 = y^{1/3}$

$y = (n + 2) ^3$

$f^{-1}(n) = (n + 2)^3$

Hope this helps!

7 0

3 years ago

Read 2 more answers

2. Dora and Ron share £50 in the ratio 3:7.

yaroslaw [1]

£15

If you add the two ratios together you get 10. Which means that the £50 is made up of 10 pieces. To get Doras amount you have to divide 50 by 10 which is five, and then times the number by how many pieces Dora has, which would be 5x3=15

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3 years ago

After the data was recorded in the dot plot, another response was found for a participant who watches 30 hours of television eac

Liula [17]

Answer:

I think its A

Step-by-step explanation:

...

8 0

3 years ago