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3 years ago

11

Last night, Christina received 4 messages from Kyle, 11 from Christina, 5 from Steven, 9 from Kevin, and 24 from Natalie. What i

s the experimental probability that the morning's first message is from Steven?

1 answer:

bulgar [2K]3 years ago

7 0

This = P(message is from Steven) = number of messages from steven / total number of messages from previous night

= 5 / (4+11+5+9+24) = 5/53 Answer

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Solve for x, need help!

tatyana61 [14]

Answer:

Cosθ =Adjacent / hypotenuse

$\cos(45) = \frac{6}{x} \\ \frac{1}{ \sqrt{2} } = \frac{6}{x} \\ x = 6 \sqrt{2}$

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Fudgin [204]

Answer:

1) = H

2) = 0,4

4) = S

Step-by-step explanation:

1) H is found by counting across the horizontal (axis) as x and then downwards the vertical axis for y as y is a negative we find H for y at ( y = -5 )

But when we always read left to right we start with x first at 3 across. (x= 3) as this is the same as (3,-5)

2) We find x, y at (0,4) as 0 is middle of the two axis as they cross each other and 4 goes upwards. x= 0 y =4 = (0,4)

4) S is found as it is a refection of (8,-4) across the y axis.

(x = -8) is still x but it is valued as negative in y as (x = -8)

Then (y = -4) so it stays the same height as y and represents vertical axis line which is called y axis.

And so y reflects the same height.

But in all the others y represents vertical measure generally.

Whilst x represents horizontal measure generally. they both meet at a point which represents two values generally, like cost and time, network output and population, or cupcakes sales and duration/time.

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3 years ago

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Which situation below is representative of y-intercept? A) putting $300 a month into savings B) buying $30 worth of supplies for

hammer [34]

Answer:

a) putting $300 a month into savings

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4 years ago

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Question 9 - (3 marks available)

navik [9.2K]

Image of the triangle is attached

Answer:

24 cm

Step-by-step explanation:

If two triangles are similar, the corresponding sides must be in the same ratio.

From the diagram, the height of the triangle is 36cm.

But the height of triangle ABE = h,

To find the height of triangle BCD, let's subtract the height of triangle ABE from 36cm.

Therefore.

Height of BCD = 36 - h.

Since the triangles are similar and their corresponding sides have the same ratio, we have the expression:

$\frac{b}{h} = \frac{b}{h}$

Substituting figures, we have:

$\frac{20}{h} = \frac{10}{36-h}$

Cross multiplying, we have:

20(36-h) = 10 * h

720 - 20h = 10h

720 = 10h + 20h

720 = 30h

$h = \frac{720}{30}$

h = 24 cm

Therefore, the height of triangle ABE is 24cm

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3 years ago