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2 years ago

If 200 cookies are baked and 50 have gone down to digestion, how much has been eaten and how much hasn't.

Mathematics

2 answers:

Anettt [7]2 years ago

4 0

50 have been eaten and 150 have not been eaten.

Lena [83]2 years ago

4 0

150 have not been eaten and 50 have been eaten.

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15)

kykrilka [37]

Answer:

A) 2 cm

Step-by-step explanation:

The sum of two sides of a triangle must be greater than the third side

2 + 3 is not greater than 5

8 0

2 years ago

Read 2 more answers

Jan is x years old, her sister is twice as old as her, and her brother is three times older than her. Their ages add up to 29. H

victus00 [196]

Jan's age = $4\frac{5}{6}$ years

Sister's age = $9\frac{2}{3} \: years$

Step-by-step explanation:

Jan's age = x years

Sister's age = 2x years

Brother's age = 3x years

According to the given condition:

x + 2x + 3x = 29

6x = 29

x = 29/6

x = $4\frac{5}{6}$ years

2x = $2\times \frac{29}{6}= \frac{29}{3}=9\frac{2}{3} \: years$

Therefore,

Jan's age = $4\frac{5}{6}$ years

Sister's age = $9\frac{2}{3} \: years$

3 0

3 years ago

Solve ABC given A= 74 , a= 126, b=84

Helga [31]

Here is the answer to the question. Hope this helps!

Please leave comments if you can’t read something. I’ll get back to you as soon as possible!

7 0

1 year ago

Candy has observed 250 sports cars at an intersection and found that 15% did not make a complete stop. Candy tells you that the

Julli [10]

Answer:

The confidence level of the study is 99.9%

The confidence level is 99.9% of the margin error is 8%

Step-by-step explanation:

Explanation:-

Candy has observed 250 sports cars

The sample size 'n' = 250

Sample proportion 'p' = 15% = 0.15

The margin of error = 8% = 0.08

The margin of error is determined by = $\frac{z_{\alpha }\sqrt{p(1-p)} }{\sqrt{n} }$

$0.08 X \sqrt{250} = z_{\alpha } \sqrt{0.15 (1-0.15)}$

$\frac{ 0.08 X \sqrt{250}}{ \sqrt{0.15 (1-0.15)}} = z_{\alpha }$

$z_{\alpha }= \frac{ 0.08 X \sqrt{250}}{ \sqrt{0.15 (1-0.15)}} = \frac{1.2649}{0.35707}$

$z_{\alpha } = 3.5431$

Conclusion:-

The z- score of 99.9% level of significance = 3.54 for two tailed test

Hence the confidence level is 99.9% of the margin error is 8%.

3 0

3 years ago

F (X) = x² - 2x and 6(x) = 3x+1

spin [16.1K]

Answer: See bolded below

Step-by-step explanation:

With the given f(x) and g(x) given, we can directly plug them in to solve. The inverse is to replace the y with x and x with y, then solve for y.

A. f(g(-4))=143

g(-4)=3(-4)+1

g(-4)=-12+1

g(-4)=-11

With g(-4), we plug that into f(x) to find f(g(-4)).

f(-11)=(-11)²-2(-11)

f(-11)=121+22

f(-11)=143

------------------------------------------------------------------------------------

B. 9x²-1

(3x+1)²-2(3x+1)

(9x²+6x+1)-6x-2

9x²-1

------------------------------------------------------------------------------------

C. g⁻¹(x)=(x-1)/3

x=3y+1

x-1=3y

(x-1)/3=y

4 0

3 years ago