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3 years ago

20 POINTS PLEASE HELP!

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

7 0

Answer:

The answer would be 1:2 since its doubled.

kipiarov [429]3 years ago

3 0

Answer:

scale factor = 2

Step-by-step explanation:

Since the dimensions have been doubled this is equivalent to multiplying the original dimensions by 2, that is

scale factor = 2

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Help Please: Two boats start their journey from the same point A and travel along directions AC and AD, as shown below: What is

Roman55 [17]

Answer:

230.9 ft

Step-by-step explanation:

The side ratios of a 30°-60°-90° triangle are 1 : √3 : 2

In ∆ABC, BC = AB/√3 ≈ 115.47 ft

In ∆ABD, BD = AB√3 ≈ 346.41 ft

Then the length CD is ...

346.41 ft -115.47 ft = 230.94 ft

The distance CD is about 230.9 ft.

8 0

3 years ago

Solve the following quadratic equation:

Advocard [28]

Answer:

-3.5 or -6

Step-by-step explanation:

2x^2+19x+40=-2

2x^2+19x+40+2=0

2x^2+19x+42=0

2x^2+(12+7)x+42=0

2x^2+12x+7x+42=0

2x(x+6)+7(x+6)=0

(x+6)(2x+7)=0

either,

x+6=0

x=-6

or,

2x+7=0

2x=-7

x=-7/2

x=-3.5

4 0

2 years ago

A class has 35 students, of which 16 are male and 19 are female. If 6 of the students are selected at random to form a committee

madreJ [45]

Answer:

The probability of choosing exactly 2 male and 4 female students = $\frac{\binom{16}{2}\times \binom{19}{4}}{\binom{35}{6}}$

Step-by-step explanation:

We are given that a class has 35 students

Number of male=16

Number of female=19

We have to choose 6 students for committee

We have to find the probability that exactly 2 male students are selected

Probability=P(E)= $\frac{number\;of\;favorable\;cases}{total\;number\;of\;cases}$

If we have to choose total 6 student in which 2 male and 4 female

Combination formula:

$nC_r=\frac{n!}{r!(n-r)!}$

Using the formula

The probability of choosing exactly 2 male and 4 female students = $\frac{\binom{16}{2}\times \binom{19}{4}}{\binom{35}{6}}$

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2 years ago

A shipping company charged $15 to ship a package and 5% to insure the package. What was the total cost to ship this particular i

Crank

The shipping would be 15.75 because 5% of 15 is 0.75, so add 15 to 0.75 and the answer is 15.75 :)

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3 years ago

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What strategy for finding area and perimeter of a 2 dimensional shape?

Mice21 [21]

Area is supposed to be multiplied by 2.

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3 years ago

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