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3 years ago

(Will mark brainliest!!!) 20 PTS !!

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

4 0

Answer:

probability[Number of 6 random sample do not have cavities] = 0.8

Step-by-step explanation

Given:

Number of student do not have cavities = 60%

Number of random sample = 9 children

Find:

Probability[Number of 6 random sample do not have cavities]

Computation:

n = 9

p = 60% = 0.6

P(At least 6)

Probability[Number of 6 random sample do not have cavities] = 1 - P(Less than 6)

Probability[Number of 6 random sample do not have cavities] = 1 - P(Less than or equal to 6)

Probability[Number of 6 random sample do not have cavities] = 0.8

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Find the measure of BE step by step

Zigmanuir [339]

Answer:

BE = 49

Step-by-step explanation:

In triangle BDC

65^2=56^2+BD^2

65^2-56^2=BD^2

4225-3136=BD^2

1089=BD^2

33=BD

In triangle FDE

65^2=63^2+DE^2

4225-3969=DE^2

256 = DE^2

16=DE

since ED+DB=BE

THEREFORE

16+33=BE

49=BE

6 0

3 years ago

1. (1000000 - 45589)<br><br><br>sinung makasagot number one nalang kailangan ko

Luden [163]

Answer:

9,54,411 is the answers for the question

Step-by-step explanation:

please mark me as brainlest

7 0

3 years ago

Find each measurement indicated round your answers to the nearest tenth. Part 1d. NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW

valkas [14]

Answer:

see explanation

Step-by-step explanation:

Using the Sine rule in all 3 questions

(1)

$\frac{a}{sinA}$ = $\frac{b}{sinB}$ , substitute values , firstly calculating ∠ B

[ ∠ B = 180° - (78 + 49)° = 180° - 127° = 53° ]

$\frac{a}{sin78}$ = $\frac{18}{sin53}$ ( cross- multiply )

a sin53° = 18 sin78° ( divide both sides by sin53° )

a = $\frac{18sin78}{sin53}$ ≈ 22.0 ( to the nearest tenth )

(3)

$\frac{c}{sinC}$ = $\frac{a}{sinA}$ , substitute values

$\frac{35}{sinC}$ = $\frac{45}{sin134}$ ( cross- multiply )

45 sinC = 35 sin134° ( divide both sides by 35 )

sinC = $\frac{35sin134}{45}$ , then

∠ C = $sin^{-1}$ ( $\frac{35sin134}{45}$ ) ≈ 34.0° ( to the nearest tenth )

(5)

Calculate the measure of ∠ B

∠ B = 180° - (38 + 92)° = 180° - 130° = 50°

$\frac{a}{sinA}$ = $\frac{b}{sinB}$ , substitute values

$\frac{BC}{sin38}$ = $\frac{10}{sin50}$ ( cross- multiply )

BC sin50° = 10 sin38° ( divide both sides by sin50° )

BC = $\frac{10sin38}{sin50}$ ≈ 8.0 ( to the nearest tenth )

3 0

3 years ago

What is four ninths of forty five

Alika [10]

Four ninths means 4/9 and of means multiply= 4/9 × 45
=20/1
=20

5 0

3 years ago

Read 2 more answers

Dana is purchasing a new car that costs $24,650. Although Dana will be financing her car, she must pay sales tax, title, and tag

telo118 [61]

Dana must pay $1238.75 upfront.

Step-by-step explanation:

Given,

Cost of car = $24,650

Sales tax = 3.5%

Amount of sales tax = 3.5% of cost of car

Amount of sales tax = $\frac{3.5}{100}*24650$

Amount of sales tax = $\frac{86275}{100}=\$862.75$

Amount of title and tag fees = $376

Total upfront amount = Amount of sales tax + Amount of title and tag fees

Total upfront amount = 862.75+376 = $1238.75

Dana must pay $1238.75 upfront.

Keywords: percentage, sales tax

Learn more about percentage at:

#LearnwithBrainly

6 0

3 years ago