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ololo11 [35]
3 years ago
7

The number 3.07 × 10 -4 written in standard form is _____.

Mathematics
1 answer:
Nina [5.8K]3 years ago
8 0

Answer:

0.000307

Step-by-step explanation:there will be no explaintion but it should be correct

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Use the ratio of a 30-60-90 triangle to solve for the variables. Make sure to simplify radicals. Leave your answers as radicals
Lelu [443]

Answer:

A. v = 19√3.

B. u = 38.

Step-by-step explanation:

The following data were obtained from the question:

Angle θ = 60°

Adjacent = 19

Opposite = v

Hypothenus = u

A. Determination of the value of 'v'

The value of v can be obtained by using Tan ratio as shown below:

Angle θ = 60°

Adjacent = 19

Opposite = v

Tan θ = Opposite /Adjacent

Tan 60 = v/19

Cross multiply

v = 19 × Tan 60

Tan 60 = √3

v = 19 × √3

v = 19√3

Therefore, the value of v is 19√3

B. Determination of the value of 'u'

The value of u can be obtained by using cosine ratio as shown below:

Angle θ = 60°

Adjacent = 19

Hypothenus = u

Cos θ = Adjacent /Hypothenus

Cos 60 = 19/u

Cos 60 = 1/2

1/2 = 19/u

Cross multiply

u = 2 × 19

u = 38

Therefore, the value of u is 38.

6 0
3 years ago
A school wishes to accept 2000 students for their freshman class, and they expect 20,000 applications. In order to make their ad
vovangra [49]

Answer:

456

Step-by-step explanation:

Let X be the SATscore scored by the students

Given that X is normal (1000,200)

By converting into standard normal variate we can say that

z=\frac{x-1000}{200} is N(0,1)

To find the top 10% we consider the 90th percentile for z score

Z 90th percentile = 1.28

X= 200+1.28(200)\\= 200+256\\=456

i.e. only students who scored 456 or above only should be considered.

3 0
3 years ago
Draw two lines with a slope of 1 / 2. What do you notice about the lines?
patriot [66]

Answer:

The lines would be parallel.

Step-by-step explanation:

lines with the same slope are parallel.

6 0
2 years ago
Read 2 more answers
Isaiah knows that 1/4 is written 0.25 as a decimal. How can he find a decimal for 5/4 without dividing?
skelet666 [1.2K]

Answer:

Step-by-step explanation:

1/4*5= 5/4

1  1/4

or do the same with decimals

(1/4=0.25)*5=

0.25*5=1.25

1.25=5/4=1  1/4

hope it helped ;0

5 0
3 years ago
What is 39 squared? A. 39 B. 1,482 C. 1,521 D. 78
iogann1982 [59]
Hey There!

The answer to you're question is C, because squared means to the power of two. So, 39 * 39 is 1,521.

Have A Brainly Day!
5 0
3 years ago
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