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3 years ago

8.

Mathematics

1 answer:

m_a_m_a [10]3 years ago

4 0

Answer:

i think its 33

Step-by-step explanation:

10 Girls came by Car, 20 Girls came by bicycle.

19 Girls walked.

16 boys walked, 21 boys came with bicycle.

14 boys walked.

In total 33 students walked

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The scale on a map indicates that 1 in = 2.5mi. How far apart are two cities that measure 2.5 ft apart on the map? A. 60 miles B

IceJOKER [234]

The answer is C. 75 miles

4 0

3 years ago

What is the volume of a box that is 5 feet long, 6 feet wide and 10 feet tall

WITCHER [35]

Answer:

The volume is 300 square feet.

Step-by-step explanation:

Volume is calculated by multiplying as such:

$l \times w \times h$

so, to calculate this, you would insert the parameters of the equation like this:

$5 \times 6 \times 10$

doing it step by step, it is:

$5 \times 6 = 30$

$30 \times 10 = 300$

7 0

3 years ago

What sequence of transformations takes triangle A to triangle B?

aksik [14]

Answer:

hmm theres no triangle picture or info

Step-by-step explanation:

6 0

3 years ago

10# A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like

ella [17]

ANSWER:

104

STEP-BY-STEP EXPLANATION:

Given:

Standard deviation (σ) = 700

Confidence level = 95%

Mean error (Eμ) = 135

We have for a confidence level of 95%:

$\begin{gathered} \alpha=100\%-95\%=5\%=0.05 \\ \\ \alpha\text{/2}=\frac{0.05}{2}=0.025 \\ \\ \text{ The corresponding Z value for \alpha/2 = 0.025 is as follows:} \\ \\ Z_{\alpha\text{/2}}=1.96 \end{gathered}$

Now, we calculate the minimum value of the sample size as follows:

$\begin{gathered} n=\left(\frac{Z_{\alpha\text{/2}}\cdot\sigma}{E}\right)^2 \\ \\ \text{ We replacing:} \\ \\ \:n=\left(\frac{1.96\cdot 700}{135}\right)^2 \\ \\ \:n=103.2858\cong104 \end{gathered}$

The minimum sample size needed is 104

3 0

1 year ago

Write a polynomial function of minimum degree in standard form with real coefficients whose zeros include those listed.

Volgvan

For roots r1 and r2, the factors are (x-r1)(x-r2)

r1=i
r2=-i
don't forget i^2=-1

(x-i)(x-(-i))=(x-i)(x+i)=x^2-i^2=x^2-(-1)=x^2+1

the function is
f(x)=x^2+1

8 0

3 years ago