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labwork [276]
3 years ago
13

Which system is equivalent to

Mathematics
2 answers:
Kaylis [27]3 years ago
8 0

Answer:

d

Step-by-step explanation:

sammy [17]3 years ago
6 0

<u>Answer:</u>

D) 6x^2 - 8y^2 = 50

-6x^2 - 2y^2 = 11

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

We are given the following two expressions:

3x^2-4y^2=25

and

-6x^2-2y^2=11

Now if we look at the option D) 6x^2 - 8y^2 = 50&#10; and -6x^2 - 2y^2 = 11, we can observe that the earlier part in the given expression is just a simplification of 6x^2 - 8y^2 = 50.

6x^2 - 8y^2 = 50\\\\2(3x^2-4y^2) = 50\\\\3x^2-4y^2 = \frac{50}{2} \\\\3x^2-4y^2=25

and the later part -6x^2 - 2y^2 = 11 is already the same.

Therefore, the correct answer option is D)  6x^2 - 8y^2 = 50

-6x^2 - 2y^2 = 11.

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The area of a circle is 28.26 square yards. what is the circle's circumference? a=28.26 yd2
Levart [38]

area \:  = \pi {r}^{2} \\  circumference  = 2\pi \: r
where r = radius
\pi {r}^{2}  = 28.26 \:  {yd}^{2}  \\  {r}^{2}  = 28.26 \div \pi \\  {r}^{2}  = 8.99 = 9 \\  \sqrt{ {r}^{2} }  = r  =  \sqrt{9}  = 3
circumference = C
c = 2\pi \: r = 2(3) \times \pi \\  = 18.85 \: yd = 18.9 \: yd


5 0
2 years ago
Read 2 more answers
1/5 plus 3/10 in the most simple form
Reptile [31]

Hey there!

1/5 + 3/10
= 2/10 + 3/10

= 2 + 3/10 - 0

= 5/10

= 5 ÷ 5 / 10 ÷ 5

= 1 / 2


Therefore, your answer is: 1/2


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

6 0
2 years ago
Use the given line below to answer parts 1 and 2. Include your work in your final answer. Type your answer in the box provided o
atroni [7]
Since the line is vertical, its slope is "undefined."  This slope has no numerical value.

The point-slope form is y = mx + b.  In this particular problem, the slope, m, is undefined, and there is no y-intercept (the line never crosses the y-axis).
8 0
3 years ago
If f(x)=5x and g(x)=2x-1, what is the composition f(g(x))?
Paul [167]

Answer:

10x-5

Step-by-step explanation:

f(x)=5x

g(x)=2x-1

To create a composite function, replace x in f(x) with g(x)

f(g(x)) = 5(g(x) = 5(2x-1) = 10x-5

4 0
2 years ago
The winning car in a race traveled the race distance of 450 miles at an average speed of 120 miles per hour (mph). The car finis
lozanna [386]

Answer:b

Step-by-step explanation:

450 divide by 4 hours and 30 minutes is 100 because 4 hours and 30 minutes is 4.5 hours so 450/4.5 is 100

7 0
3 years ago
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