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3 years ago

Find surface area please

Mathematics

1 answer:

MArishka [77]3 years ago

3 0

Answer:

203

Step-by-step explanation:

When calculating surface area, you add the area of each side.

Base: LxW = 7x7 = 49

Triangle Sides: 1/2 b x h = 1/2(7) x 11 = 38.5

4 sides: 38.5x4 = 154

154+49 = 203

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A helicopter blade does 3206 full turns in 7 minutes. Work out the number of full turns per minute? Then work out how many turns

ANEK [815]

Answer:

458 turns/min ----- 13740/30 min

Step-by-step explanation:

3206/7 (min) = 458

458 x 30 (min) = 13740

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3 years ago

Miranda has a bag of marbles with 5 blue marbles, 1 white marbles, and 1 red marbles. Find the following probabilities of Mirand

kvasek [131]

Answer:

(a) $\frac{5}{7},\frac{1}{6}$ (b) $\frac{1}{7},\frac{1}{6}$ (c) $\frac{5}{7},\frac{2}{3},\frac{3}{5}$

Step-by-step explanation:

GIVEN: Miranda has a bag of marbles with $5$ blue marbles, $1$ white marbles, and

TO FIND: a) A Blue, then a red Preview

,b)A red, then a white Preview

,c) A Blue, then a Blue, then a Blue.

SOLUTION:

Total marbles in bag $=7$

(a)

Probability of drawing blue marble $=\frac{\text{total blue marble}}{\text{total marbles}}$

$=\frac{5}{7}$

As marble is not returned to bag,

Probability of drawing red marble $=\frac{\text{total red marble}}{\text{total marbles}}$

$=\frac{1}{6}$

(b)

Probability of drawing red marble $=\frac{\text{total red marble}}{\text{total marbles}}$

$=\frac{1}{7}$

As marble is not returned to bag,

Probability of drawing white marble $=\frac{\text{total white marble}}{\text{total marbles}}$

$=\frac{1}{6}$

(c)

Probability of drawing blue marble $=\frac{\text{total blue marble}}{\text{total marbles}}$

$=\frac{5}{7}$

As marble is not returned to bag,

Probability of drawing second blue marble $=\frac{\text{total blue marble}}{\text{total marbles}}$

$=\frac{4}{6}=\frac{2}{3}$

As marble is not returned to the bag

Probability of drawing third blue marble $=\frac{\text{total blue marble}}{\text{total marbles}}$

$=\frac{3}{5}$

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3 years ago

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krok68 [10]

Answer:

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Step-by-step explanation:

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3 years ago

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Which statement is true about the distribution?

Minchanka [31]

The answer is
<span>
The IQR is the best measure of variability because the distribution has an outlier.

Hoped I Helped I did the test</span>

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3 years ago

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3. The cost of the city permits needed to build this building is 150,000 no matter how many floors with

natima [27]

Answer:

$P(x) = 150000$

$Slope = 0$

Step-by-step explanation:

Given

$Cost = 150000$

Solving (a): The cost function:

From the given parameter, it shows that the number of floor has no effect on the floors.

So, represent the floors with x.

The cost function is:

$P(x) = 150000$

Solving (b): The slope and its interpretation

A function is represented as:

$f(x) = b + mx$

Where:

$m=slope$

By comparing: $f(x) = b + mx$ to $P(x) = 150000$

$m = 0$

So:

$Slope = 0$

<em>What it means is that, no matter the number of floors, the cost remains unchanged.</em>

4 0

3 years ago