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2 years ago

During second period, Janet completed a grammar worksheet.

2 answers:

7 0

75%!
she has 56 questions in total and if she gets 14 correct, that’s 1/4 of the questions. therefore, she has 3/4 (75%) wrong.

Dmitry_Shevchenko [17]2 years ago

4 0

Answer: 50%

Step-by-step explanation:

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Find the size of the angle using Sohcahtoa or Pythagoras.

lisov135 [29]

Answer:

x ≈ 38.7°

Step-by-step explanation:

Using the sine ratio in the right triangle

sinx = $\frac{opposite}{hypotenuse}$ = $\frac{5}{8}$ , then

x = $sin^{-1}$ ( $\frac{5}{8}$ ) ≈ 38.7° ( to 1 dec. place )

6 0

2 years ago

What is the completely factored out form of d^4-8d^2+16

Lostsunrise [7]

d^4-8d^2+16

(d^2-4d)(d^2-4d)

(d-2)(d+2)(d-2)(d+2)

Option D is correct

8 0

2 years ago

How many 5-member chess teams can be chosen from 15 interested players? Consider only the members selected, not their board posi

ryzh [129]

Answer:

3003 number of 5-member chess teams can be chosen from 15 interested players.

Step-by-step explanation:

Given:

Number of the interested players = 15

To Find:

Number of 5-member chess teams that can be chosen = ?

Solution:

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter. To calculate combinations, we will use the formula $nCr = \frac{n!}{r!(n - r)!}$

where

n represents the total number of items,

r represents the number of items being chosen at a time.

Now we have n = 15 and r = 5

Substituting the values,

$15C_5 = \frac{15!}{5!(15- 5)!}$

$15C_5 = \frac{15!}{5!(10)!}$

$15C_5 = \frac{15\times \times 14 \times 13 \times 12 \times 11 \times 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 }{5 \times 4 \times 3 \times 2 \times 1(10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1)}$

$15C_5 = \frac{15\times \times 14 \times 13 \times 12 \times 11}{(5 \times 4 \times 3 \times 2 \times 1)}$

$15C_5 = \frac{360360}{120}$

$15C_5 = 3003$

7 0

2 years ago

Round to the nearest percent. From 80 pencils to 152 pencils.

user100 [1]

Answer:

90% Increase

Step-by-step explanation:

80+72=152

72/80= .9

6 0

2 years ago

Solve the inequality. r6≤3

ladessa [460]

R could be anything. But when you multiply it with 6 it should give you a result of a number less than 3.
Example: if r=0.1, 0.1x6=0.6 which is less than or equal to 3.
The greatest number r can be is 1/2

7 0

3 years ago

Read 2 more answers