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aleksandr82 [10.1K]
3 years ago
3

Help me please I can’t do this

Mathematics
1 answer:
Elina [12.6K]3 years ago
5 0
9. 5 qt
10. 6 cups
11. 35 pt
12. 30 cups
13. 18 qt
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Roger owns a one acre piece of land . The length of the land is 484 feet. What is the width of his property
JulsSmile [24]

1 acre = 43560 square feet

43560 = 484 * X

X=43560/484 = 90

the width = 90 feet

4 0
4 years ago
Find the real roots of the equation x^4-5x^2-36=0
Usimov [2.4K]
Treat x^4 as the square of p:  x^4 = p^2.

Then x^4 - 5x^2 - 36 = 0 becomes p^2 - 5p - 36 = 0.

This factors nicely, to (p-9)(p+4) = 0.  Then p = 9 and p = -4.

Equating 9 and x^2, we find that x=3 or x=-3.
Equating -4 and x^2, we see that there's no real solution.

Show that both x=3 and x=-3 are real roots of x^4 - 5x^2 - 36 = 0.
6 0
3 years ago
Which equation can be used to prove 1 + tan2(x) = sec2(x)?
notsponge [240]

Answer:

fourth option

Step-by-step explanation:

Using the trigonometric identity

cos²x + sin²x = 1

Divide all terms by cos²x

\frac{cos^2x}{cos^2x} + \frac{sin^2x}{cos^2x} = \frac{1}{cos^2x} which gives

1 + tan²x = sec²x

6 0
3 years ago
Pls help for this question sssssssss
nirvana33 [79]

Answer:

(16√75)/(5√12) = 8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help me I have no idea how to do 18
sleet_krkn [62]

First, subtract px2 from both sides.

Now you have:

x3 - px2 = (1 - p) x1

Next, divide both sides by (1 - p)

So now you have

x3 - px2/(1 - p) = x1

...as your final answer


*You can decide if you want to leave the parenthesis in your final answer, I left them there so it could be visible where I put them. :)

5 0
3 years ago
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