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3 years ago

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Harry and Terry are each told to calculate 8−(2+5)8−(2+5). Harry gets the correct answer. Terry ignores the parentheses and calc

ulates 8−2+58−2+5. If Harry's answer is HH and Terry's answer is TT, what is H−TH−T? −10−10 −6−6 00 66 1010 Submit

1 answer:

solniwko [45]3 years ago

5 0

-10 is the answer.

Harry's answer: 8-(2+5)=1
Terry's answer: 8-2+5=11
H-T=1-11 = -10

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For the sequence an = an-1 + an-2 and ai = 2, a2 = 3,

loris [4]

Answer:

$a_1 = 2$

$a_2 = 3$

$a_3 = 5$

$a_4 = 8$

$a_5 = 13$

Step-by-step explanation:

Given

$a_n = a_{n-1} + a_{n-2}$

$a_1 = 2$

$a_2 = 3$

Solving (a): The first term

This has already been given as:

$a_1 = 2$

Solving (b): The second term

This has already been given as:

$a_2 = 3$

Solving (c): The third term

This is calculated as:

$a_n = a_{n-1} + a_{n-2}$

$a_3 = a_{3-1} +a_{3-2}$

$a_3 = a_2 +a_1$

$a_3 = 3 +2$

$a_3 = 5$

Solving (d): The fourth term

This is calculated as:

$a_n = a_{n-1} + a_{n-2}$

$a_4 = a_{4-1} +a_{4-2}$

$a_4 = a_3 +a_2$

$a_4 = 5+3$

$a_4 = 8$

Solving (e): The fifth term

This is calculated as:

$a_n = a_{n-1} + a_{n-2}$

$a_5 = a_{5-1} +a_{5-2}$

$a_5 = a_4 +a_3$

$a_5 = 8+5$

$a_5 = 13$

3 0

3 years ago

I need help with this someone

Marina86 [1]

There are a lot of questions and work here, I can help you get started in the right direction.

On the left, you have the heights for Soil A. On the right, you have the height for Soil B. Looking at the overlap, there are a lot of heights in the 60's and 70's for both.

To calculate the mean, add up all the values and divide by the total.

For the MAD, you have to subtract each value from the mean. Then, take the absolute value of it. Finally, find the mean of those values.

The one with the higher MAD is more variable.

4 0

3 years ago

What is the angle of a triangle if one angle is 68 and the other is 52

zvonat [6]

Answer:

The last angle is 60 degrees

Step-by-step explanation:

<u>All triangles add up to 180 degrees</u>

<u />

<u>Step 1: Make an equation</u>

What is the angle of a triangle if one angle is 68 and the other is 52.

<em>68 + 52 + x = 180</em>

<em />

<u>Step 2: Combine like terms</u>

68 + 52 + x = 180

<em>120 + x = 180</em>

<em />

<u>Step 3: Subtract 120 from both sides</u>

120 + x - 120 = 180 - 120

<em>x = 60</em>

<em />

Answer: The last angle is 60 degrees

3 0

3 years ago

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Which expression is equivalent to <br> 5(6p + 5) + 2(8p + 3)?

Trava [24]

Answer:

46p + 31

hope it's helpful

4 0

3 years ago

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1. You are standing on top of a ridge using a clinometer trying to figure out how far your dog has wandered off in

olga_2 [115]

<u>Given:</u>

It is given that the ridge is 360 inches tall.

<u>Assumptions:</u>

Assume you are 170.1 cm tall which equals 67 inches tall, the height from your eye to the floor is $360+67 = 427$ inches.

The distance from your eye level to the bottom of the ridge is 427 inches.

Assume the angle A is 60°.

<u>To find the distance from you to your dog.</u>

<u>Solution:</u>

A right-angled triangle can be formed where the angle is 60°, the distance between you and the dog is the hypotenuse of the triangle and your height from the floor is the adjacent side of the triangle.

Assume the hypotenuse of the triangle measures x inches.

To determine the length of the hypotenuse, we determine the cos of the angle.

$cos \theta = \frac{adjacent side}{hypotenuse} .$

$cos A = \frac{427}{x} , x = \frac{427}{cos60} , cos60=0.5.$

$x=\frac{427}{0.5} = 854.$

So if the ridge is 360 inches tall and you are 67 inches tall and the angle A is 60°, the distance between your dog and you is 854 inches.

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3 years ago