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2 years ago

I need help!!! What is Sin^-1 (7)

Mathematics

1 answer:

masya89 [10]2 years ago

3 0

Answer: the number should be less than 1 and more than -1

sin^-1(7) doesn't exist

Step-by-step explanation:

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Heather took one of her friends out to lunch. The lunches cost $100 and she paid 9% sales tax. If Heather left a 15% tip on the

Allushta [10]

Answer:

124 is the total

Step-by-step explanation:

100 * .09 = 9

100 * .15 = 15

15+ 9 + 100 = 124

Hope it helps!

7 0

3 years ago

HELP ASAP PLSS! f(x) = 12x + 5 find f(11) f(11) =

loris [4]

F(11) means to replace x in the equation with 11

12(11) + 5

12 x 11 = 132

Now you have 132 + 5 = 137

F(11) = 137

5 0

3 years ago

The world's largest university (by enrollment) is University A, followed by University B. If the enrollment in University A i

Sav [38]

Let x be the number of people at University B

x + (x+3.5) = 9.5
2x +3.5 = 9.5
2x = 6
x = 3 million students at University B

x + 3.5 = 3 + 3.5 = 6.5 million students at University A

8 0

3 years ago

A single-serving bag of trail mix has 10 raisins, 12 cashews, 8 peanuts, 2 Brazil nuts, 10 pumpkin seeds, and 8 dried cranberrie

EastWind [94]

Answer:

The probability is 1/5, or 20%

Step-by-step explanation:

There are 40 total items in the bag, and 8 of them are peanuts.

$\frac{8}{40}$ simplified is $\frac{1}{5}$

3 0

2 years ago

Read 2 more answers

Please help!! I don’t get it

Marrrta [24]

Answer:

Each hotdog costs $1.65

Each juice drink costs $1.05

Step-by-step explanation:

Let's begin by letting $x$ represent the number of hot dogs and $y$ the number of juice drinks.

The Baxter family bought 6 hot dogs and 4 juices for $14.10.

$6x + 4y = 14.10$

The Farley family bought 3 hot dogs and 4 juices for $9.15.

$3x + 4y = 9.15$

Now, we subtract these equations.

$6x + 4y = 14.10\\- (3x + 4y = 9.15)$

Since $y$ has reversed coefficients, it gets eliminated. Now solve for x.

$6x+4y-3x-4y=14.1-9.15\\3x = 4.95\\\frac{3x}{3} = \frac{4.95}{3}$

$\frac{4.95}{3} = 1.65$

$x = 1.65$

NOW, we find y by substituting x with 1.65 (in either equation).

We'll use the first equation.

$6x + 4y = 14.10$

$6(1.65) + 4y = 14.10$

$9.9 + 4y = 14.10\\4y = 14.1 - 9.9\\4y = 4.2$

$\frac{4y}{4} = \frac{4.2}{4} \\y = 1.05$

$x$ = 1.65

$y$ = 1.05

$x$ represents hotdogs and $y$ represents juice drinks.

Therefore, each hotdog costs $1.65 and each juice drink costs $1.05.

I hope this helps! :)

6 0

3 years ago