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nirvana33 [79]
3 years ago
8

Roof trusses often use right triangles to make a flimsy 2 × 4 more rigid to hold up the weight of the roof. If a house is 40 fee

t wide and the roof is an isosceles triangle with base angles of 30 degrees, how far is it from the bottom edge of the roof to the peak?
Mathematics
1 answer:
masha68 [24]3 years ago
4 0
The side length would be 23.094010767585
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Last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days. Each day they found 9 sh
melomori [17]

Answer:

Step-by-step explanation:

Since on each day 9 shells were found, and there are 7 days: 7 x 9 = 63

Number of shells found this summer: 63

Number of shells found fewer this year than last year: 152 - 63 = 89

Hence, Jon’s family found 63 fewer shells than last year

8 0
3 years ago
Which answer choice below correctly identifies the 120th term in the sequence 9, 17, 25, 33 …?
nataly862011 [7]

Answer:

120th term = 961

where

a = first term

d = common difference

n = number of terms

Step-by-step explanation:

a + (n - 1)d \\ 9 + (120 - 1)8 \\ 9 + (119)8 \\ 9 + 952 \\ 120th \: term = 961

8 0
3 years ago
For Spirit Day, each 8th-grade homeroom designs a unique twocolor T-shirt. They get to choose from the colors red (R), blue (B),
ratelena [41]

Answer:

P(B and V)=10%

Step-by-step explanation:To solve this poroblema we use the formula of combinations:

C(n,r)=(nr)=n!(r!(n−r)!)

Where n is the number of objects that can be chosen and you choose r from them.

There are 5 colors of shirts.

The number of shirts that can be made by combining 2 of the 5 possible colors is calculated as:

5C2= \frac{5!}{2!(5-2)!}

5C2=10

The number of shirts that can be made by combining 2 of the 2 possible colors (B) and (V) is calculated as:

2C2=1

Then the probability is:

P( B and V)= \frac{1}{10}

=0.1= 10%

\frac{2C2}{5C2}

8 0
3 years ago
Read 2 more answers
I have 18 piece of fruit 9 are apples the rest are oranges how many are oranges
ra1l [238]

Answer:

9

Step-by-step explanation: 18-9=9

7 0
4 years ago
Read 2 more answers
​<br><br> f(1)=−6<br> f(2)=−4<br> f(n)=f(n−2)+f(n−1)<br> ​<br> f(n)=?
andriy [413]

The nth term of the sequence is 2n - 8

<h3>Equation of a function</h3>

The nth term of an arithmetic progression is expressed as;

Tn = a + (n - 1)d

where

a is the first term

d is the common difference

n is the number of terms

Given the following parameters

a = f(1)=−6

f(2) = −4

Determine the common difference

d = f(2) - f(1)

d = -4 - (-6)
d = -4 + 6

d = 2

Determine the nth term of the sequence

Tn = -6 + (n -1)(2)

Tn = -6+2n-2
Tn = 2n - 8

Hence the nth term of the sequence is 2n - 8

Learn more on nth term of an AP here: brainly.com/question/19296260

#SPJ1

5 0
1 year ago
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