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3 years ago

I’m confused about this.

Mathematics

2 answers:

mezya [45]3 years ago

6 0

Answer:

rise/run so 4/7

That's really all I know about this topic, hope it helps

marishachu [46]3 years ago

3 0

Answer:

y=4/7x

Step-by-step explanation:

(4/7 is a fraction) -3-

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The access code for a garage door consists of three digits. Each digit can be any number from 1 through 5, and each digit can b

Papessa [141]

Answer:

(a) 125

$(b) \dfrac{1}{125}$

$(c) \dfrac{124}{125}$

Step-by-step explanation:

We are given that access code consists of 3 digits.

Each digit can be any digit through 1 to 5 and can be repeated.

Now, this problem is equivalent to the problem that we have to find:

The number of 3 digit numbers that can be formed using the digits 1 to 5 with repetition allowed.

(a) We have 3 places here, unit's, ten's and hundred's places respectively and each of the 3 places have 5 possibilities (any digit allowed with repetition).

So, total number of access codes possible:

$5\times 5 \times 5 = 125$

(b) Suppose, an access code is randomly selected, what is the probability that it will be correct.

Formula for probability of an event E can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

Here, only 1 code is correct, so

Number of favorable cases = 1

Total number of cases = 125

So, required probability:

$P(E) = \dfrac{1}{125}$

$P(\overline E) = 1-P(E)\\\Rightarrow P(\overline E) = 1-\dfrac{1}{125}\\\Rightarrow P(\overline E) = \dfrac{125-1}{125}\\\Rightarrow P(\overline E) = \dfrac{124}{125}$

So, the answers are:

(a) 125

$(b) \dfrac{1}{125}$

$(c) \dfrac{124}{125}$

7 0

3 years ago

Cereal is on sale this week. Is it a better buy to get the 10-ounce box for $1.76 or the 14-ounce box for $2.42?

Veseljchak [2.6K]

Answer:

292381g56i3yg8

Step-by-step explanation:

4 0

2 years ago

The angle of depression from the top of a building to a point

AleksandrR [38]

The distance between point on the ground from the top of the building is 396 meter, if the building is 280 m high and The angle of depression from the top of a building to a point on the ground is 45 degrees.

Step-by-step explanation:

The given is,

The angle of depression from the top of a building to a point on the ground is 45 degrees.

Height of the building is 280 meter.

Step: 1

Given diagram is a right angled diagram,

For right angle triangle,

90° = 45° + 45°

= 90°

Trignometric ratio,

sin ∅ = $\frac{Opp}{Hyp}$ ....................(1)

For the above ratio take the bottom angle, that is angle of depression from the top of a building to a point on the ground is 45 degrees.

Where, Opp side = 280 meters

Hyp side = x

∅ = 45°

Equation (1) becomes,

sin 45° = $\frac{280}{x}$

0.70710678 = $\frac{280}{x}$

x = $\frac{280}{0.70710678}$

x = 395.979

Distance between point on the ground from the top of the building, x ≅ 396 meter

Trignometric ratio,

cos ∅ = $\frac{Adj}{Hyp}$

Cos 45 = $\frac{Adj}{396}$

Adj = (0.70710678)(396)

Bottom length, Adj = 280 meter

Result:

The distance between point on the ground from the top of the building is 396 meter.

8 0

3 years ago

Wanda wants to start a vegetable garden. She has set aside a 5-foot by 35-foot area in her backyard for the garden. If each type

fomenos

Answer:

Step-by-step explanation:

So 5x35 is 175. Divide by 35 and you get 5.

3 0

3 years ago

What is the center of a circle whose equation is x^2+y^2-12x-2y+12=0

Evgen [1.6K]

Answer:

(6, 1)

Step-by-step explanation:

7 0

3 years ago

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