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3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Mathematics

2 answers:

slega [8]3 years ago

7 0

Answer:

da answer is C

Step-by-step explanation:

Vikentia [17]3 years ago

6 0

its C, it is based accurately on the graph.

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A circular disc has circumference 250 cm.<br> Calculate the radius of the disc.

nasty-shy [4]

$\textit{circumference of a circle}\\\\ C=2\pi r ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=250 \end{cases}\implies 250=2\pi r\implies \cfrac{250}{2\pi }=r\implies \stackrel{cm}{39.79}\approx r$

7 0

2 years ago

Which graph represents the function h(x) = |x| + 0.5?

pickupchik [31]

Answer:

On a coordinate plane, an absolute value graph has a vertex at (0, 0.5).

Step-by-step explanation:

properties of the given function

domain=X€R
range=[1/2,+♾️)
minimum (0,1/2)

4 0

2 years ago

Help me please.Only help me in number 8

nataly862011 [7]

The answer is 95 hope this helps

3 0

3 years ago

Read 2 more answers

What 175 multiplyed by 260

jolli1 [7]

Answer:

45500

Step-by-step explanation:

175 can be multiplied by 200 which gives you 35000 plus 175 times 60 which gives you 10500. You can add and you get 45500.

I was a first place champion in number sense and thats my strategy

Thank you!!!

May i have brainliest?

6 0

3 years ago

Suppose the mean height of women age 20 years or older in a certain country is 62.7 inches. One hundred randomly selected women

zmey [24]

Answer: No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.

Step-by-step explanation:

Since we have given that

$H_0:\mu =62.7\\\\H_a:\mu \neq 62.7$

Mean height = 61.5 inches

Standard deviation = 4.4 inches

n = 100

So, test statistic value would be

$z=\dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{61.5-62.7}{\dfrac{4.4}{\sqrt{100}}}\\\\z=\dfrac{-1.2}{0.44}\\\\z=-2.727$

At 10% level of significance, in two tail test ,

z = 1.28

Since 1.28 > -2.727

So, we will accept the null hypothesis.

Hence, No, the data provided is not sufficient evidence to conclude that the mean height of women in the city differs from the national mean.

7 0

4 years ago