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3 years ago

13=X/4 A. 13/4 B. 4/13 C. 52 D. 9

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

3 0

Answer:

Hi! The answer to your question is C. 52

Step-by-step explanation:

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Hope this helps!

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Find the slope, distance and midpoint between

Dovator [93]

Answer:

Slope- 4

Distance- 12.4

Midpoint- (6,8)

Step-by-step explanation:

Slope- $\frac{y2-y1}{x2-x1}$

$\frac{2-14}{4-7} =\frac{-12}{-3}=4$

Distance- $d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}$

$d = \sqrt{(4 - 7)^2 + (2-14)^2}$

$d = \sqrt{-3^2 + -12^2}$ $d = \sqrt{144+9}=\sqrt{153}$

$\sqrt{153} = 12.4$

Midpoint- $\frac{x1+x2}{2} ,\frac{y1+y2}{2}$

$\frac{7+4}{2} =\frac{12}{2} = 6=x$

$\frac{14+2}{2} = \frac{16}{2} = 8 = y$

(6,8)

6 0

3 years ago

The mean height of women in a country (ages 20-29) is 64.5 inches. A random sample of 75 women in this age group is selected.

Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

x is the raw score = 65 inches

μ is the population mean= 64.5 inches

σ is the population standard deviation = 2.99

n = 75

z = 65 - 64.5 /2.99/√75

z = 0.5/0.345255461

z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

P(x>25) = 1 - P(x<25)

= 1 - 92622

= 0.07378

The probability that the mean height for the sample is greater than 65 inches is 0.07378

4 0

3 years ago

what is the measure of the central angle of a circle with a radius 24 ft that intercepts at 10 ft arc? use 3.14 as pie

Brrunno [24]

Answer:

central angle =23.88°

Step-by-step explanation:

Given:Arc length =10ft

radius= 24ft

To find : central angle

Formula: Arc length = 2πr. $\frac{\theta}{360}$ °

⇒ ${\theta}$ = $\frac{arc length.360}{2{\pi}{r}}$

⇒ ${\theta}$ = $\frac{10(360{\degree})}{2 (3.14)(24)}$

⇒ ${\theta}=$ 23.8853503°

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3 years ago

100 POINS, Help

svlad2 [7]

Answer: Translate triangle ABC so that point B lies on point D to confirm ∠B ≅ ∠D.

Step-by-step explanation: Since we already know that angle A is congruent to itself by the reflexive property, all we need is another pair of corresponding angles to be congruent according to the AA (angle-angle) similarity postulate. This postulate states that; If two corresponding angles of two or more triangles are congruent, the triangles are similar. So when we translate triangle ABC so that point ∠B lies on ∠D, we prove that these two angles are congruent.

I also got it right on the test. So... yeah.

hope this helps dood.

3 0

3 years ago

point b, o, and y are collinear on by, and bo:oy = 5/8. B is located at (4,2,) o is located at (57/8,-3) and Y is located at (x,

Lena [83]

Given: BO : OY = 5:8. Coordinate B is located at (4,2,) ; O is located at (57/8,-3) and Y is located at (x,y).

We have to determine the coordinate Y.

We will use cross section formula which states:

The coordinates $(x_1,y_1) , (x_2,y_2)$ are divided in the ratio $m_1 : m_2$ by the Coordinate A. So, the coordinates of A are given by the formula: