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Mariana [72]
3 years ago
14

Help I suck at math..

Mathematics
1 answer:
kakasveta [241]3 years ago
5 0

Answer:

The correct answers are:

B

D and

F

Step-by-step explanation:

Hope it can help you lovelots

<em><u>#</u></em><em><u>L</u></em><em><u>E</u></em><em><u>A</u></em><em><u>R</u></em><em><u>N</u></em><em><u> </u></em><em><u>WITH</u></em><em><u> BRAINLY</u></em>

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What is the area of the triangle in the diagram?
Schach [20]

Answer:

\frac{(a-b)^2+b^2}{a^2}

which agrees with the first choice (A) in your list of possible answers

Step-by-step explanation:

Notice that the area of the outer square is given by the square of it side (a).Then the outer area is given by: a^2

Now, the inner square's area we calculate by subtracting from the outer area four equal right angle triangles (those shaded in grey in the figure provided). Each of such right angle triangles have an area given by the general formula of a triangle's area:

Area_{triangle}= \frac{base\,*\,height}{2} =\frac{(a-b)\,b}{2} =\frac{ab-b^2}{2}

Therefore the internal square's area is:

a^2-4\frac{ab-b^2}{2} =a^2-2ab+2b^2

And then the quotient of this are over the larger square area becomes:

\frac{a^2-2ab+2b^2}{a^2} =\frac{a^2-2ab+b^2+b^2}{a^2}=\frac{(a-b)^2+b^2}{a^2}

4 0
3 years ago
The width of a rectangle is 20 inches. What must the length be if the perimeter is at least 180 inches.a 85.5 inches b 70 inches
Veronika [31]
The anwser is b 75 inches
5 0
4 years ago
Davita can jog 2000 feet in 4 minutes if she jogs at the same rate how many feet can she jog in 8 minutes
slavikrds [6]
The answer is 4,000. if she can run 2,000 feet in 4 minutes, multiply both by two and the answer is 4,000 feet in 8 minutes
7 0
3 years ago
Read 2 more answers
How do you solve this? HELPPPPPPPPPPPPPP TYSMMM
aliina [53]
120/5 = x-2(x+3)
24= x^2+x-6 
subtract 24 on both sides
this is so you know where the next stuff comes from
A            b     c
(1)x^2+(1)x-30 now its quadratic ( i prefer factoring but you can apply quadratic formula to it ) 
for factoring you multiply A by c and get -30 and see what multiplies to get -30 and adds to get 1 you get -5 and 6
you set that to x-5 and x+6 (this is only if A =1 )
you get x=5 and x=-6 due to the product property (x-5=0 and x+6=0 solve for x how i got it )
your answer can be negative so x is equal to 5 
5*(5-2)*(5+3)
5*3* 8
L*W*H
width is 3 Height is 8
awnser is 8 give brainliest plox
6 0
4 years ago
The total cost to rent a row boat is $14 times the number of hours the boat is used. Write an equation to model this situation i
Damm [24]
14h = c

If c = the total cost, then the equation should end with "= c" because we're trying to find the total cost of renting a row boat.

If the row boat is $14 per hour, that's 14 x hours, or 14h.

Therefore, 14h = c.

Hope this helps
4 0
3 years ago
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