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2 years ago

From a group of 6 freshmen, 5 sophomores, and 8 seniors, a

Mathematics

2 answers:

ryzh [129]2 years ago

7 0

Answer:

a: 42%

b: 68%

Step-by-step explanation:

Nesterboy [21]2 years ago

4 0

Answer:

1. The probability of selecting a senior is 0.42 (42%).

2. The probability of not selecting a freshman is 0.68 (68%).

Step-by-step explanation:

Total students: 19

Freshmen: 6
Sophomores: 5
Seniors: 8

1. $\frac{8}{19} = 0.42$

2. $\frac{13}{19} = 0.68$

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A server at a restaurant works 5 hours on a weekday and 8 hours on a weekend day. Use the expression to find the number of hours

emmasim [6.3K]

Answer: 36 hours

Step-by-step explanation:

t = total hours

t = 5d + 8w

t = 5(4) + 8(2)

t = 20 + 16

t = 36

4 0

3 years ago

How to solve -66.17738=6.618(4.3x+1.1)-7.1(x-6.8) have not done algebra in 30 years and cannot help my son with this problem

fenix001 [56]

Let's solve your equation step-by-step.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

Step 1: Simplify both sides of the equation.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

−66.17738=(6.618)(4.3x)+(6.618)(1.1)+(−7.1)(x)+(−7.1)(−6.8)(Distribute)

−66.17738=28.4574x+7.2798+−7.1x+48.28

−66.17738=(28.4574x+−7.1x)+(7.2798+48.28)(Combine Like Terms)

−66.17738=21.3574x+55.5598

Step 2: Flip the equation.

21.3574x+55.5598=−66.17738

Step 3: Subtract 55.5598 from both sides.

21.3574x+55.5598−55.5598=−66.17738−55.5598

21.3574x=−121.73718

Step 4: Divide both sides by 21.3574.

21.3574x

21.3574

−121.73718

21.3574

x=−5.7

4 0

4 years ago

Read 2 more answers

(3•x)•3-2=1 I missed a lot of school and don’t know how to solve for x could you help me

elena-14-01-66 [18.8K]

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$(3x) \times 3 - 2 = 1$

$(3x \times 3) - 2 = 1$

$9x - 2 = 1$

Add sides 2

$9x - 2 + 2 = 1 + 2$

Simplification

$9x = 3$

Divide sides by 9

$\frac{9x}{9} = \frac{3}{9} \\$

$\frac{9}{9} x = \frac{3}{9} \\$

$x = \frac{3}{3 \times 3} \\$

$x = \frac{1}{3} \\$

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3 years ago

A ship is sailing due north. At a certain point the bearing of a lighthouse is N 42.8∘E and the distance is 10.5. After a while,

bija089 [108]

Answer:

How far did the ship travel between the two observations of the lighthouse = 9.29

Step-by-step explanation:

the first step to answer this question is drawing the illustration as the attachment.

P is the ship, R is the light house and Q is the bearing.

PR is the distance between the ship and the light house, PR = 10.5

∠P = 42.8°, ∠Q = 59.7°

Thus, ∠R = 180° - ∠P - ∠Q

= 180° - 42.8°- 59.7°

= 77.5°

PQ is the the distance of the ship moving. We can use the sinus equation

$\frac{PR}{sin R}$ = $\frac{PQ}{sin Q}$

$\frac{10.5}{sin 77.5°}$ = $\frac{PQ}{sin 59.7°}$

PQ = ( $\frac{10.5}{Sin 77.5°}$ )(sin 59.7°)

= 9.29

5 0

3 years ago

What is 9 times 9. (my calculator Broke)

boyakko [2]

Answer:81

Step-by-step explanation: 9*1= 9 9*2= 18 9*3 = 27 9*4= 36 9*5=45 9*6 = 54 9*7=63 9*8= 72 9*9 81 9*10= 90

5 0

3 years ago

Read 2 more answers