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Alex787 [66]
3 years ago
11

. Which of the following is the only triangle whose sides form a right triangle?​

Mathematics
1 answer:
vivado [14]3 years ago
4 0

Answer:

It is either C or D.

Step-by-step explanation:

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Solve the following system of equations using the substitution method.
BartSMP [9]

Answer:

B

Step-by-step explanation:

First label the equations.

6x +3y= 18 -----(1)

y= -2x +5 -----(2)

subst. (2) into (1):

6x +3(-2x +5)= 18

6x +3(-2x) +3(5)= 18 (expand)

6x -6x +15= 18

15= 18 (simplify)

(reject)

There is no solution.

<u>Further explanation</u><u>:</u>

If I rewrite the first equation into the form of y=mx+c, I would get

6x +3y=18

3y= 18 -6x (bring y term to one side)

y= 6- 2x (÷3 throughout)

y= -2x +6

Notice that the gradients of both lines are equal ( -2). This implies that they are parallel to each other and will never meet. Hence there are no solutions.

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3 years ago
In the equation b=25+8. what is the next step in the equation soving sequence?
DedPeter [7]
The next step in the equation is the quotient
6 0
3 years ago
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Jannelle needs 280,000 points on a computer game so far she has 96,675 points how many more dose she need use mental math
Troyanec [42]
Jannelle would need 183,325 more points.
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3 years ago
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Find the polar equation of the conic with the focus at the pole, directrix x = -5, and eccentricity 2.
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Step-by-step explanation:

Given that,

Directrix, d= -5, and eccentricity, e = 2.

The polar equation of the conic is given by :

r=\dfrac{ed}{1-e\cos\theta}

Put all the values,

r=\dfrac{-5\times 2}{1-2\cos\theta}\\\\=\dfrac{-10}{1-2\cos\theta}

As e>1, it is a hyperbola. Hence, this is the required solution.

3 0
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There are 80 cookies in a box. Tom eats cookies at a rate of 5 per minute. At the same time, Andy also eats cookies at a differe
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In 10 minutes, Tom eats (5 cookies/minute)×(10 minutes) = 50 cookies.

Andy must eat the remaining cookies:

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_____

The answer to the question asked is

Andy must eat 30 cookies.

The answer to the question not asked is

Andy eats those cookies at the rate

... (30 cookies)/(10 minutes) = 3 cookies/minute

5 0
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