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3 years ago

12

25 pointsplease help very hard

1 answer:

oksano4ka [1.4K]3 years ago

6 0

To determine the average, you need to add up all the numbers within the table and then divide by how many numbers there are.
14 + 23 + 13 + 13= 37 + 26 = 63.
We have a sum of 63 and a total of 4 numbers.
Divide the sum by the total amount of numbers.
63/4 = 15.75
The average is 15.75 km, which is more than 15.00 km.
I hope this helped!

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zhenek [66]

Answer:

The cost of one ticket is $9

Step-by-step explanation:

we have

4x+12=48

where

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4x=48-12

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Divide by 4 both sides

x=36/4=9

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3 years ago

24 to 18 is the same as <br><br>(ratio)<br>

Dmitriy789 [7]

Answer:

3:4

Step-by-step explanation:

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2 years ago

Need help on these trig homework

allochka39001 [22]

8. The length of the support is 7. 9 m

9. The length of the conveyer is 12m

3. a = 59m

A = 44°

B = 52°

4. c = 88. 6 mm

b = 49. 1 m

B = 34°

<h3>How to solve the trigonometry</h3>

8. We have the angle to be 20 degrees

Opposite side = x

hypotenuse = 23m

Using the sine ratio

sin θ = opposite/ hypotenuse

$sin 20 = \frac{x}{23}$

Cross multiply

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$x = 0. 3420$ × $23$

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The length of the support is 7. 9 m

9. The angle of elevation is 37. 3 degrees

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Opposite = x

Using the sine ratio

sin θ = opposite/ hypotenuse

$sin 37. 3 = \frac{x}{19}$

cross multiply

$x = 0. 6059$ × $19$

x = 11.5

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The length of the conveyer is 12m

3. To determine the sides and angles, we use the sine rule;

$\frac{a}{sin A} = \frac{b}{sin B} = \frac{c}{sin C}$

For side a, we use the Pythagorean theorem

$c^2 = a^2 + b^2$

$85^2 = a^2 + 67^2$

$a = \sqrt{89^2-67^2}$

$a = \sqrt{3432}$

a = 58. 58, a = 59m

To find angle A and B, use the sine rule

$\frac{59}{sin A } = \frac{85}{sin 90}$

cross multiply

$sin A$ × $85$ = $sin 90$ × $59$

make sin A subject of formula

$sin A = \frac{59}{85}$

$sin A = 0. 6941$

A = $sin^-^1(0. 6941)$

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cross multiply

$sin B$ × $85$ = $sin 90$ × $67$

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$sin B = 0. 7882$

B = $sin^-^1( 0. 7882)$

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4. To find the sides, we use the sine rule;

$\frac{74. 0}{sin 56. 6} = \frac{c}{sin 90}$

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$sin 56. 6$ × $c = sin 90$ × $74$

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c = 88. 6 mm

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b = 49. 1 m

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cross multiply

$sin B = \frac{40. 99}{74. 0}$

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B = 34°

Learn more about trigonometric identity here:

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1 year ago

Find an equation for the line that passes through the points (-2,-6) and (6,-4)

JulsSmile [24]

Slope of line
m= (y2-y1)/(x2-x1)
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y+2=(1/4)(x-6)
simplify
4(y+2)=x-6 =>
x-4y-14=0
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y=(1/4)x - 3/2-2 =>
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2 years ago

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Simora [160]

The answer is 21, you subtract the smallest number (30) by the biggest number (51)

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1 year ago

Read 2 more answers