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2 years ago

The Valley High School student council is planning a dance. The

Mathematics

1 answer:

DerKrebs [107]2 years ago

3 0

Answer:

$3.90

Step-by-step explanation:

its B

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Multiplicative inverse of a neggative<br>rational number is

lions [1.4K]

$for \: a \: rational \: number \: \frac{a}{b} \: such \: that \: 0 > a \: \: \: \: \: \: 0 < b \\ its \: multiplicative \: inverse \: is \: - \frac{b}{a}$

6 0

2 years ago

Can i get some help :

Charra [1.4K]

Answer:

b = $\frac{7}{12}$

Step-by-step explanation:

b + $\frac{2}{3}$ = 1 $\frac{1}{4}$ ← change to an improper fraction

b + $\frac{2}{3}$ = $\frac{5}{4}$

Multiply through by 12 ( the LCM of 3 and 4 ) to clear the fractions

12b + 8 = 15 ( subtract 8 from both sides )

12b = 7 ( divide both sides by 12 )

b = $\frac{7}{12}$

5 0

2 years ago

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Cos(2α)*sin(α-β)-cos(β-α)*sin(2α)

Hunter-Best [27]

Answer:

Step-by-step explanation:

cos (2α)*sin (α-β)-cos(β-α)*sin(2α)
cos (β-α)=cos {-(α-β)}=cos (α-β)

[cos (-x)=cos x]

sin(α-β)*cos (2α)-cos (α-β)*sin (2α)=sin (α-β-2α)=sin (-α-β)

=sin {-(α+β)}

=-sin (α+β)

6 0

2 years ago

I need help with this geometry question

MArishka [77]

Answer:

Approximately 7.8 units

Step-by-step explanation:

To find the distance between any two points, we can use the distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

From the graph, we can see that A is (0,0). Let's let this be x₁ and y₁.

B is (-5,6). Let's let this be x₂ and y₂. So, substitute:

$d=\sqrt{(-5-0)^2+(6-0)^2}$

Simplify:

$d=\sqrt{(-5)^2+(6)^2}$

Square:

$d=\sqrt{25+36}$

Add:

$d=\sqrt{61}$

Take the square root. Use a calculator:

$d\approx7.8$

So, the distance between them is about 7.8 units.

And we're done!

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2 years ago

James is reading a book that is 1400 pages he will read the same number of pages each day if he reads the book in 7 days how man

Novay_Z [31]

He will read 200 pages a day.

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2 years ago

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