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vampirchik [111]
3 years ago
12

Can someone show me how to do this problem

Mathematics
1 answer:
olchik [2.2K]3 years ago
8 0

√x+5 -1 = 0

Solve for X:

Add 1 to each side:

√x+5 = 1

Remove the radical by squaring both sides:

(√x+5)^2 = 1^2

Simplify:

x+5 = 1

Subtract 4 from each side:

x = -4


The answer is C.

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The same experiment was conducted 8 times. How many times should the
steposvetlana [31]

Answer:

C. 4

Step-by-step explanation:

Because there is always a 50/50 chance of getting the similar result.

Hope this helps.

3 0
3 years ago
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate
ser-zykov [4K]

Answer:

H_1 : \mu  > 24.5

Step-by-step explanation:

From the given information:

The sample size is 28

The population mean is 24.5 (ppb)

The sample mean is 225.3 (ppb)

Thus, the null and the alternative hypothesis can be computed as:

Null hypothesis:

H_o : \mu \le 24.5

Alternative hypothesis:

H_1 : \mu  > 24.5

8 0
3 years ago
Dakota’s parents are creating her practice ballet studio and want to install baseboards around the perimeter of the rectangular
kherson [118]

1. When you estimate, it is not an exact measurement. 3ft 8 in gets rounded to 4ft and 12 ft 3 in rounds to 12ft. now find the perimeter. P=2l+2w P= 2*12 +2*4 P=32feet

2. 3ft 8in = 3 8/12 or reduced to 3 2/3  12ft 3in = 12 3/12 or reduced to 12 1/4   The fractional part is referring to a fraction of a foot.

3. The perimeter of the room is P=2l+2w or P=2(12 1/4) + 2(3 2/3) p=24 1/2 + 7 1/3  P= 31 5/6 feet

4. The estimate and the actual are very close. They are 1/6 of a foot apart.

5a. Total baseboard 31 5/6ft - 2 1/4 ft = 29 7/12 feet needed.

5b. Take the total and divide it by 8ft  = 29 7/12 divided by 8= 3.7  You are not buying a fraction of a board so you would need 4 boards.


4 0
4 years ago
Barbara’s orange weighs 5 ounces. She ate 1/3 of the orange. How many ounces of the orange did Barbara eat?
Ede4ka [16]

Answer:

1.67 ounces

Step-by-step explanation:

All you have to do is take 5 and multiply that by 1/3 to get what 1/3 of 5 is. By doing that you get 5/3 which simplifies to 1.6667 repeating but you can round to 1.67 and thats your answer.

3 0
3 years ago
Can someone help (it about arc length and area)
sasho [114]

Answer:

x=14

Step-by-step explanation:

\angle TPR=8x+7-75=360-150-91-75\\8x=112\\x=14

6 0
3 years ago
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