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klasskru [66]
3 years ago
10

Help with triangles 8th grade

Mathematics
1 answer:
Vanyuwa [196]3 years ago
7 0
7 is 45 degrees ndhdhdhdjdj
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A building 78 ft high casts a 195-ft shadow. Sarah casts a 10-ft shadow. The triangle formed by the building and its shadow is s
mylen [45]
This can be solved by similar triangles, which means you can cross multiply and divide. 78/195=x/10. 78(10)=780 and divide 780 by 195, you'll get the answer is 4. This means Sarah is 4 ft tall. 
7 0
4 years ago
For questions 1 and 2, use the diagram below.
DanielleElmas [232]
1) it's just 360 divided by 8 sectors =  45 degrees (answer B)
2) (180-45)/2 = 67.50 (answer D is the nearest)
6 0
3 years ago
Read 2 more answers
How many solutions does the following equation have: <br> 16y + 7 = -3y + 10 + 8y
joja [24]

Answer:

one solution only

Step-by-step explanation:

16y + 7 = -3y + 10 + 8y

16y + 3y - 8y = 10 - 7

11y = 3

y = 3/11

7 0
3 years ago
Read 2 more answers
****PLEASE HELP!!! ****
Alexxx [7]
Solve for b in y = mx + b.
Subtract b from both sides, then subtract y from both sides.
-b = mx - y
C) mx - y = -b
8 0
3 years ago
A sequence can be defined by the explicit formula <img src="https://tex.z-dn.net/?f=a_n%3D5-3_n" id="TexFormula1" title="a_n=5-3
astra-53 [7]
<h2>Answer:</h2>

Option: C is the correct answer.

            C.  a_n=a_{n-1}-3\ ;\ a_1=2

<h2>Step-by-step explanation:</h2>

The sequence is given by the explicit formula as:

a_n=5-3n

where a_n is the nth term of the sequence.

Also, the first term of the sequence is: a_1

i.e.

a_1=5-3\times 1\\\\i.e.\\\\a_1=5-3\\\\i.e.\\\\a_1=2

Also,

a_n=5-3n\\\\i.e.\\\\a_n=5-3n+3-3\\\\i.e.\\\\a_n=5-3(n-1)-3\\\\i.e.\\\\a_n=a_{n-1}-3

   Hence, the recursive formula which represents the same sequence is:

                          Option: C

3 0
3 years ago
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