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3 years ago

SOMEONE PLEASE HELP ME OUT!!!!

Mathematics

2 answers:

ratelena [41]3 years ago

8 0

Answer:

40/30

Step-by-step explanation:

Since tan∅= o/a, 40 is opposite, and 30 is adjacent to angle A, 40/30 is the ratio for tanA.

Volgvan3 years ago

4 0

Answer:40/30

Step-by-step explanation:

....

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What is 2log4 x + 6 log4 y

Ivanshal [37]

= log4 x^2 + log4 y^6

= log4 x^2y^6

6 0

3 years ago

If tests are worth 60% of your grade, and you have a 76.8% in that class, and you fail that test, what will be your grade?

ratelena [41]

Answer:

Step-by-step explanation:

it depends on the grade you make, so if you were to make a 65.47, your grade would be a 70, so any grade less than 70 should be the answer, hope this helps!

3 0

3 years ago

The director of the library calculates that 29% of the library's collection is checked out. If the director is right, what is th

marusya05 [52]

Answer:

The probability that the proportion of books checked out in a sample of 412 books would differ from the population proportion by less than 4% is P=0.9255.

Step-by-step explanation:

The population's proportion is $\pi=0.29$

If we take a sample of 412 books (n=412), we have a standard deviation of the sampling distribution of:

$\sigma_M=\sqrt{\frac{\pi(1-\pi)}{n}}=\sqrt{\frac{0.29*0.71}{412}}=\sqrt{0.0005} =0.0224$

We have to calculate the probabilty that the sample proportion will be between 0.25 and 0.33.

$z_1=(0.25-0.29)/0.0224=-0.04/0.0224=-1.7857\\\\z_2=1.7857\\\\\\P(0.25$

8 0

4 years ago

Evaluate (4)^-4 pls answer!!!

geniusboy [140]

Answer:

Fraction: 1/256 or

Decimal: 0.00390625 or 0.00391

Step-by-step explanation:

4^-4=1/4^4

4^4=256

=1/256

8 0

3 years ago

Jina is saving money to buy a bike. She has $63 and is going to save an additional $9 each week. The bike costs $198. In how man

Cerrena [4.2K]

Answer:

Jina will have enough money to buy the bike in 15 weeks

Step-by-step explanation:

y = mx + b

198 = 9x + 63

Subtract 63 from both sides;

135 = 9x

Divide both sides by 9;

x = 15

3 0

3 years ago