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3 years ago

Which net matches the figure?

Mathematics

2 answers:

viktelen [127]3 years ago

8 0

The first net because the figure shown is a square pyramid<span />

Harlamova29_29 [7]3 years ago

7 0

The top choice to the left, is your answer. I hope this helps!

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Suppose that 0.10 of population is colourblind if 25of sample drown from this population find probability that at least 7 have c

Leokris [45]

Answer:

$P(X \geq 8)=22*10^{-4}$

Step-by-step explanation:

From The Question we are told that

Prob that population is colourblind $P(C)=0.10$

Sample size $N=25$

Generally the equation for Number of color blinds is mathematically given by

$P(X \geq 8)=\sum^{25}_{x=8}(25..x)(0.10)^x(0.90)^25-x$

$P(X \geq 8)=22*10^{-4}$

8 0

3 years ago

If the area of a rectangle is 42 what is the perimeter?

mihalych1998 [28]

Answer:

110 is the answer

hope this helps

have a good day :)

Step-by-step explanation:

7 0

3 years ago

Three vectors A, B, C in three-dimensional space satisfy the following properties

wlad13 [49]

Answer:

$\frac{7}{8}\pi$

Step-by-step explanation:

observe

||a–b+c|| = ||a+b+c||

(a-b+c)² = (a+b+c)²

(a+b+c)² – (a-b+c)² = 0

((a+b+c)+(a-b+c))((a+b+c)–(a-b+c)) = 0

(2a+2c)(2b) = 0

(a+c)b = 0

a•b + c•b = 0

||a||×||b||×cos(π/8) + ||c||×||b||×cos(θ) = 0

$\cos(\theta)=-\frac{||a||\times ||b|| \times \cos(\frac{\pi}{8})}{||c||\times ||b||}=-\cos(\frac{\pi}{8})\\ \theta=\frac{7}{8}\pi$

3 0

4 years ago

What is the factors for 14 and 6

Snowcat [4.5K]

Answer:

14= 1, 2, 7, 14

6= 1, 2, 3, 6

4 0

3 years ago

Solve the questions bellow

Hatshy [7]

Answer:

1. 29.67°

2. 68.96°

3. 89.85°

Step-by-step explanation:

1. Reference angle = x

Opposite = 45 cm

Adjacent = 79 cm

Therefore:

$tan(x) = \frac{45}{79}$

$tan(x) = 0.569620253$

$x = tan^{-1}(0.569620253)$

$x = 29.67$ (nearest hundredth)

2. Reference angle = B

Opposite = 14

Hypotenuse = 15

Therefore:

$sin(B) = \frac{14}{15}$

$sin(B) = 0.93333$

$B = sin^{-1}(0.93333)$

$B = 68.96$ (nearest hundredth)

3. Reference angle = x

Adjacent = 238,900 mi

Hypotenuse = 92,955,807 mi

Therefore:

$cos(x) = \frac{238,900}{92,955,807}$

$x = cos^{-1}(\frac{238,900}{92,955,807})$

$x = 89.85$ (nearest hundredth)

8 0

3 years ago