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4 years ago

7

A school directer must randomly select 6 teachers out of 30 in how many ways can the teachers be selected if the order doesn't m

atter

2 answers:

Allushta [10]4 years ago

7 0

It will be 1,344,904

son4ous [18]4 years ago

4 0

230230
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A jacket is on sale for 15% off the original price of $ 68.00. What is the sale price? Show your work!

Reptile [31]

57.8

Step-by-step explanation:

To get the answer we have to find 15% of 68 and then subtract it from 68$

15% its 0.15

0.15*68=10.2

68-10.2=57.8 - its the answer

8 0

3 years ago

Find the Solution of 2cos^2x + 3sin x =0

Evgen [1.6K]

2cos^2 x + 3sin x = 0
2(1 - sin^2 x) + 3sin x = 0
2 - 2sin^2 x + 3sin x = 0
2sin^2 x - 3sin x - 2 = 0

Let sin x = m, then
2m^2 - 3m - 2 = 0
2m^2 + m - 4m - 2 = 0
m(2m + 1) - 2(2m + 1) = 0
(m - 2)(2m + 1) = 0
m = 2 or m = -1/2

Now, sin x = -1/2
Therefore, x = 1/6(12nπ - π) and 1/6(12nπ + 7π)

5 0

3 years ago

Which set of sides will make a triangle?<br><br> -Middle School math-

trasher [3.6K]

Hey there!

The biggest side in the set of 3 lengths needs to be lower than the sum of the two lower numbers. So 3 is not lower than 1+1. 10 is not less than 3+4. 5 is the same as 3+2. This is not possible because this makes a line. So the biggest side can’t equal the sum of the two lower sides. 10 is less than 5+9. So the answer would be the last one. 10 cm, 5 cm, 9 cm.

I hope this helps!

3 0

3 years ago

Read 2 more answers

write each of the following word names as mixed if you purchase a hundred items that cost $0.25 each how much would the items co

docker41 [41]

Answer:$25 because if u times 100 and 0.25 u get 25

Step-by-step explanation:

5 0

3 years ago

What's is the slope of this line?<br>Need this ASAP

Basile [38]

Answer:

$\displaystyle m=2$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Algebra I</u>

Reading a Cartesian Plane

Coordinates (x, y)

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

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

Point (0, 3)

Point (1, 5)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

Substitute in points [Slope Formula]: $\displaystyle m=\frac{5-3}{1-0}$
[Slope] Subtract: $\displaystyle m=\frac{2}{1}$
[Slope] Divide: $\displaystyle m=2$

5 0

3 years ago