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3 years ago

7

Find the percent of increase. Original number: 45 books New number: 63 books

1 answer:

BARSIC [14]3 years ago

7 0

Answer:

Step-by-step explanation:

first you multiply 45 by .40 you multiply by .40 because that is the percent increase.

45*.40=18

then you just add the 18 to 45 which get you 63.

answer:40%

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sweet [91]

Answer:

A is the correct answer.

Step-by-step explanation:

$\tan x = \frac{6}{8} = \frac{opposite \: side \: to \: \angle \: x}{adjacent \: side \: to \: \angle \: x} \\ \\ hypotenuse \\ = \sqrt{ {(opp. \: side)}^{2} + {(adj. \: side)}^{2} } \\ = \sqrt{ {6}^{2} + {8}^{2} } \\ = \sqrt{36 + 64} \\ = \sqrt{100} \\ = 10 \\ \\ \because \sin (x) = \frac{opposite \: side \: to \: \angle \: x}{hypotenuse} \\ \\ \huge{ \red{ \boxed{\therefore \: \sin (x) = \frac{6}{10}}}} \\ \\ \cos (x) = \frac{adjacent \: side \: to \: \angle \: x}{hypotenuse} \\ \\ \huge{ \purple{ \boxed{\therefore \: \cos (x) = \frac{8}{10} }}} \\$

Thus, option A is the correct answer.

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3 years ago

What are the solutions to the quadratic function. f(x) = x^2+4x-12

Rudiy27

Answer:

2, -6

Step-by-step explanation:

x^2 + 4x - 12

A = 1

B = 4

C = -12

i used the "X" method to solve for the solutions. i think it's easier than using the quadratic formula but it doesn't always work

for the "X" method you have to multiply your A value and your C value together so 1 x (-12) = -12. that is going to be the top part of the X

the bottom part of the x will be your B value which is 4

we have to find multiples of -12 that will also add to 4

so -2 and 6 multiply to -12 but also add to 4 so we know these numbers will work

i added added two drawings to show how i found the solutions using the "X" method and the quadratic formula

5 0

2 years ago

Read 2 more answers

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dedylja [7]

$\huge\text{Hey there!}$

$\huge\textsf{80 + x = 200}$

$\huge\textsf{x + 80 = 200}$

$\huge\text{SUBTRACT 80 to BOTH SIDES}$

$\huge\textsf{x + 80 - 80 = 200 - 80}$

$\huge\text{CANCEL out: 80 - 80 because that gives you 1}$

$\huge\text{KEEP: 200 - 80 because that helps for x}$

$\huge\textsf{x = 200 - 80}$

$\huge\textsf{200 - 80 = x}$

$\huge\textsf{x = 120}$

$\boxed{\boxed{\huge\textsf{Therefore, your answer x = \bf 120}}}\huge\checkmark$

$\huge\text{Good luck on your assignment \& enjoy your day!}$

~ $\huge\text{Amphitrite1040:)}$

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2 years ago

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Alecsey [184]

Answer:

x-intercept = (-40,0) and y-intercept = (15,0)

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2 years ago

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inysia [295]

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2 years ago