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2 years ago

Help plsssssss no links or files

Mathematics

1 answer:

Doss [256]2 years ago

4 0

Answer:

7500 yds^2

Step-by-step explanation:

A = $\frac{1}{2}$ Bh

A = $\frac{1}{2}$ 50 * 300

A = 25 * 300

A = 7500

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X^{2} - 8x + 7 = 0<br> Solve by completing the square. Also can you include steps?

iren [92.7K]

Answer:

{1, 7}

Step-by-step explanation:

Start with x^2 - 8x + 7 = 0.

We want to modify the first two terms to resemble x^2 - ax + b - b, where a is the coefficient (here -8) of the x term and b is the square of half of a.

Here, a = -8. Half of that is -4. The square of -4 is 16, and this is the value of b.

Write out x^2 - 8x as x^2 - 8x + 16 - 16. This is the perfect square of -4, added to x^2 - 8x and then subtracted from the result

Then the original equation, x^2 - 8x + 7 = 0, can be rewritten as:

x^2 - 8x + 16 - 16 + 7 = 0, and then as (x - 4)^2 - 9, or (x - 4)^2 = 9.

We want to solve this result for x. To do this, take the square root of both sides:

x - 4 = ±√9, or x - 4 = ±3.

Adding 4 to both sides, we get:

x = 4 ± 3. Thus, the solutions are x = 4 + 3 = 7 and x = 4 - 3 = 1.

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3 years ago

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Ms. Allgood donated 63 books to her class. She would like to provide an equal number of books to each of her 9 students. How man

-Dominant- [34]

The awnser is 7 books per student

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3 years ago

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Do the ratios 9/4 and 11/6 make a proportion please explain. Thank You!

svetoff [14.1K]

No they're not proportionate because 9 divided by 4 = 2.25 and 11 divided by 6 is 1.83 so they're not the same in value

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2 years ago

What does y = 5/4x - 2 y = -1/4x + 19 equal

emmasim [6.3K]

Answer:

The solution is at the point (14, 15.5)

Step-by-step explanation:

I graphed the equations on the graph below.

If this answer is correct, please make me Brainliest!

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3 years ago

Please help! Will mark brainless

KengaRu [80]

Here’s what you can do to make this very simple. Consider that the “missing” space between the rectangles isn’t there. Then, find the area:

10 x 9 = 90 mm

Now, find the area of the “missing” part.

5 x 2 = 10 mm

Finally, you deduct the missing part from the complete rectangle!

90 - 10 = 80 mm

The area of this whole thing is 80 mm!

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2 years ago

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