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2 years ago

Plz help me with this question involving ratios.Show your work.(It is 1 question)

Mathematics

1 answer:

Ierofanga [76]2 years ago

7 0

You divide 5.625 by 125 and that's x and for y you multiply 420 to 1,875

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Find the measure of

Alborosie

Angle B is HALF of the sum of the two angles it intercepts.

Since it intercepts 48 and 142 degrees, simply add them add divide by 2:
B = (48 + 142)/2
B = 190/2
B = 95

The measure of angle B is 95 degrees.
-T.B.

4 0

3 years ago

I need help with this please

natka813 [3]

Answer:

Step-by-step explanation:

Antelope, Montana:

21, 30, 42, 58, 70, 79

Range- 58 79-21= 58

Quartile 1- 30

Quartile 3- 70

Interquartile Range- 40 70-30= 40

Augusta, Maine:

28, 32, 41, 53, 66, 75

Range- 47

Quartile 1- 32

Quartile 3- 66

Interquartile Range- 34

3 0

3 years ago

How to solve this problem?

valentinak56 [21]

Very nice handwriting but the math and English are confusing.

Let's assume we're told

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2$

The subscript is important.

I think we're told the similar sum with 11 gives the smallest possible value for the sum. This is a rather cagey way of telling us 11 is the mean of the nine points. The mean is the number which minimizes the sum of squared deviations.

$\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2 = \sum x_i^2 - 20 \sum x_i + 9(100)$

$\displaystyle \sum x_i^2= 20 \sum x_i - 900$

If 11 is the mean, the sum of the points is 9(11)=99.

$\displaystyle \sum x_i^2= 20 (99) - 900 = 1080$

Answer: 1080

6 0

3 years ago

Given points (r1, u1 ) and (r2, u2) in polar coordinates, obtain a general formula for the distance between them. Simplify it as

sertanlavr [38]

Answer:

$d=\sqrt{r_1^2+r_2^2-2r_1r_2\cos(u_2-u_1)}$

Step-by-step explanation:

The Law of Cosines gives an immediate result. No translation to Cartesian coordinates is necessary. That law makes use of the angle between the vectors, u2-u1

$d^2=r_1^2+r_2^2-2r_1r_2\cos(u_2-u_1)\\\\\boxed{d=\sqrt{r_1^2+r_2^2-2r_1r_2\cos(u_2-u_1)}}$

6 0

3 years ago

Calculate the equation of the line if two points are (1,6) and (5,0).<br><br> Explain

topjm [15]

Answer:

y = -3/2x+15/2

Step-by-step explanation:

First calculate the slope

m = (y2-y1)/(x2-x1)

= (0-6)/(5-1)

= -6/4

= -3/2

The slope intercept form of a line is

y = mx+b where m is the slope and b is the y intercept

y = -3/2 x+b

Substitute a point into the equation

0 = -3/2(5)+b

0 = -15/2+b

15/2 = b

The equation is

y = -3/2x+15/2

7 0

2 years ago

Read 2 more answers