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3 years ago

Who wants to help me out? :)))

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

6 0

Answer:

is that a test or homework

Step-by-step explanation:

I'm a kid so I have no idea

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Helpp!! what is the domain and range for the graph

ivolga24 [154]

I think the domain is -1 and the range is 2. You may want to double check though.

5 0

3 years ago

Think about the ratio of circles and stars . Of the 8 circles,how many stars would there be?

nasty-shy [4]

Answer:

Step-by-step explanation:

There are 4 circles, 6 stars. The ratio is 4/6 = 2/3

if there is 8 circles in order to get the same ratio 8/x = 2/3 => x = 12

4 0

3 years ago

What is the constant rate of change of (5,80) (4,64) and (6,96)

sveticcg [70]

Answer:

Step-by-step explanation:

The existence of the constant rate of change is given the ratio of y to x is the same. Then:

$k_{1} = \frac{80}{5}$

$k_{1} = 16$

$k_{2} = \frac{64}{4}$

$k_{2} = 16$

$k_{3} = \frac{96}{6}$

$k_{3} = 16$

In consequence, the constant rate of change is 16.

8 0

3 years ago

Find the missing term of 3b2 − = -9b2 ?<br> -6b^2<br> -9b^2<br> -12b^2

gladu [14]

3b^2 - x = -9b^2
x = 3b^2 +9b^2

x = 12b^2

3b^2 -12b^2 = -9b^2

hope this will help you

7 0

3 years ago

The following are questions from a self-quiz.According to some study, the height for Northern European adult males is normally d

lara [203]

Answer:

a) 0.064

b) 0.109

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 181 centimeter

Standard Deviation, σ = 7.3 centimeter

We are given that the distribution of height for Northern European adult males is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(person is between 160 and 170 centimeters)

$P(160 \leq x \leq 170) = P(\displaystyle\frac{160 - 181}{7.3} \leq z \leq \displaystyle\frac{170-181}{7.3}) = P(-2.8767 \leq z \leq -1.506)\\\\= P(z \leq -1.506) - P(z < -2.8767)\\= 0.066 -0.002 = 0.064 = 6.4\%$

b) P(person is higher than 190 centimeter)

P(x > 190)

$P( x > 190) = P( z > \displaystyle\frac{190 - 181}{7.3}) = P(z > 1.2328)$

$= 1 - P(z \leq 1.2328)$

Calculation the value from standard normal z table, we have,

$P(x > 190) = 1 - 0.891 = 0.109 = 10.9\%$

7 0

3 years ago