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Allushta [10]
3 years ago
15

HELP ME PLEASE!!!

Mathematics
1 answer:
Kobotan [32]3 years ago
8 0

Answer:

x=2 , y=1

Step-by-step explanation:

Since the second equation is fully simplified and we know what x equals, we plug the entire equation of x in for x in the top equation:

5(3y-1)+10y=20

Now solve for y.

y=1

Now plug y back into the bottom equation and solve for x.

x=3(1)-1

x=2

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Solve for x.3-sqrt(x)=0 What is the root? If there is none, choose none. x = 3 x = 9 none
Anon25 [30]

Answer:

x = 9

Step-by-step explanation:

You can solve this problem by isolating the variable.

3-√x = 0  

√x = 3 (add √x to both sides of the equation)

x = 9 (square both sides of the equation)

8 0
3 years ago
Use the explicit formula an = a + (n-1). d to find the 500th term of the
nadezda [96]

Answer:

Step-by-step explanation:

The difference is a2 - a1 = 31 - 24 = 7

n = 500

a500 = a1 + (500 - 1) * 7

a500 = 24 + 499 * 7

a500 = 24 + 3493

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8 0
3 years ago
A lighthouse is located on an island 200 feet from the shore of the mainland as
Deffense [45]

Answer: Approximately d = 208.72

============================================================

Work Shown:

Make sure your calculator is in radian mode

A quick way to check is to compute cos(pi) and you should get -1

cos(angle) = adjacent/hypotenuse

cos(x) = 200/d

cos(0.29) = 200/d

d*cos(0.29) = 200

d = 200/cos(0.29)

d = 208.715135166392 which is approximate

d = 208.72

I rounded to two decimal places since x is rounded in that manner as well. Round however else you need if your teacher instructs.

4 0
3 years ago
-3=3x-3.solve for x?
Sunny_sXe [5.5K]
Add 3 on both sides of the equation

3x=0

divide 3 on both sides of the equation

x=0
7 0
3 years ago
Read 2 more answers
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Rina8888 [55]
5/2 or 2.5
Hope this helps!
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