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NikAS [45]
3 years ago
8

A rectangular piece of paper has a width that is 3 inches less than its length. It is cut in half along a diagonal to create two

congruent right triangles with areas of 44 square inches. Which statements are true? Check all that apply.
Mathematics
1 answer:
yarga [219]3 years ago
7 0

Answer:

A is TRUE (44 in²*2=88 in²)

B is FALSE x(x-3)=88 (the rectangle) or x(x-3)/2=44 (the triangle)

C is TRUE if x(x-3)=88==>x²-3x-88=0

D is TRUE :

x²-3x-88=0

Δ=9+4*88=361=19²

==>x= 11 or x=-8 (excluded for <0)

E is FALSE for 11*4≠88

Step-by-step explanation:

correct me if i am wrong

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The equation below expresses the approximate
natka813 [3]

Answer:

The ball will be the 7 ft high at 2 different times.

Step-by-step explanation:

The height in meters of the ball is given by the following equation:

h(t) = -16t^2 + 25t

7 feet high

The height, by the equation, is given in meters, so we have to work in meters. Since each feet has 0,3048 meters, 7 feet have have 2.1336 meters. So, we have to solve the following equation

2,1336 = -16t^2 + 25t

16t^2 - 25t + 2,1336 = 0

At how many different times will the ball be 7 ft. High?

We have to find the number of solutions for the equation above.

It is given according to the value of \Delta = b^2 - 4ac. If it is positive, there are two solutions, zero one solution and negative no solutions.

In this equation a = 16, b = -25, c = 2.1336. So

\Delta = b^2 - 4ac = (-25)^2 - 4*16*2.1336 = 488

Since the coefficient is positive, the ball will be the 7 ft high at 2 different times.

3 0
3 years ago
Which rectangle if translated 6 units down and 1 unit right and then rotated 90° counter-clockwise about the point (-2, -5) will
MrRa [10]

Answer:

You're answer will be D

Have a nice day

Please mark brainliest:)

8 0
4 years ago
Read 2 more answers
Suppose two telephone poles are 60 ft apart and the length of the wire between the poles is 61 ft. If the lowest point of the wi
Brut [27]

Answer:

H=22.5ft

Step-by-step explanation:

According to the graph, we must find y to determine the height at which the rope must be placed so that the lowest point of the rope is 17 ft high .

applying the pythagorean theorem

h^{2}=x^{2}  +y^{2}\\y^{2}=h^{2} -x^{2}\\y^{2}=30.5^{2} -30^{2}\\ y^{2}=930.25-900\\y=\sqrt{30.25}=5.5ft

then H=17ft+5.5ft=22.5ft

5 0
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Question 7 of 10<br> Evaluate the expression and enter your answer below.<br> V64<br> v4
VikaD [51]

Answer:

4

Step-by-step explanation:

the answer is 4

I hope this is the answer

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3 years ago
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Indicate the method you would use to prove the two triangles are congruent. If no method applies, enter “none”.
WINSTONCH [101]

No method can prove that the Triangles are congruent .-.

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3 years ago
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