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nadya68 [22]
3 years ago
12

If all the dimensions of a triangle are doubled,the area of the triangle will be doubled,too

Mathematics
2 answers:
sergey [27]3 years ago
7 0
No this statement is not truee
DochEvi [55]3 years ago
3 0
A1=bh/2

A2=2b*2h/2=2bh

A2/A1=2bh/(bh/2)

A2/A1=4bh/bh=4

So the area is quadrupled not doubled...
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Shureka Washburn has scores of 67​, 68​, 76​, and 63 on her algebra tests. a. Use an inequality to find the scores she must make
mash [69]
Average=(total number)/(number of items)
given that the final exam counts as two test, let the final exam be x. The weight of the final exams on the average is 2, thus the final exam can be written as 2x because any score Shureka gets will be doubled before the averaging.
Hence our inequality will be as follows:
(67+68+76+63+2x)/6≥71
(274+2x)/6≥71
solving the above we get:
274+2x≥71×6
274+2x≥426
2x≥426-274
2x≥152
x≥76

b] The above answer is x≥76, the mean of this is that if Shureka is aiming at getting an average of 71 or above, then she should be able to get a minimum score of 76 or above. Anything less than 76 will drop her average lower than 71.


8 0
3 years ago
Someone please help me with problem #7 !!!
ser-zykov [4K]

Answer: b and d

Step-by-step explanation:

Since the roots are x=2 and x=6, we can write the equation as

f(x)=a(x-2)(x-6)

Substituting in the coordinates of the vertex,

-4=a(4-2)(4-6)\\\\-4=-4a\\\\a=1

So, the equation is f(x)=(x-2)(x-6)

On expanding, we get f(x)=x^2 - 8x+12

3 0
2 years ago
I need help..What’s the answer
RSB [31]

Answer:

D. 3,750

Step-by-step explanation:

Use proportions to solve:

125/500 = x/15000

Cross multiply:

125*15000 = 1,875,000

1,875,000/500 = 3,750

x = 3,750

6 0
3 years ago
Find the measures of the vertical angles shown. Show all work for full credit.
Anna11 [10]

Answer:

40 degrees

Step-by-step explanation:

Look at the attachment

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3 years ago
What is 282% as a fraction in simplest form
RSB [31]
282% = 2.82 = 282/100 reduces to 141/50
8 0
3 years ago
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