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Elza [17]
3 years ago
11

A number z is fewer than 3/4​

Mathematics
1 answer:
lozanna [386]3 years ago
4 0

Answer:

z < ¾

Step-by-step explanation:

Or z < 0.75

...........

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Find cos(B) in the triangle.<br> Choose 1 answer: 8/17
gavmur [86]

Answer:

8 / 17

Step-by-step explanation:

So cosine is adjacent ÷ hypotenuse.

Adjacent = 8

Hypotenuse = 17

8 / 17

7 0
4 years ago
I need help with this question
SashulF [63]
Answer:
_______________________________________________
1)  72\pi cm² / min.  ;
_______________________________________________
2)  192 \pi cm² / min.  
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Explanation:
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 Area of a circle:  A = \pi r² ;

Rate of change of Area is:  da/dt = 2\pi r (dr/dt) ;

Given:  dr/dt = 3 cm / min.
______________________________________________________
 Problem 1)
____________________________________________________________
dA/dt = 2 \pi *(12 cm)*(3 cm/ min) = 72 \pi  cm² / min. ;
____________________________________________________________
 Problem 2)
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dA/dt = 2 \pi *(32 cm)*(3 cm/ min) = 192 \pi  cm² / min.
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7 0
3 years ago
Which is the graph of linear inequality 6x + 2y &gt; –10?
spin [16.1K]

Answer: c i think

Step-by-step explanation: c

3 0
3 years ago
Read 2 more answers
A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne
Evgen [1.6K]

Answer:

a. With 90% confidence the proportion of all Americans who favor the new Green initiative is between 0.6290 and 0.6948.

b. If the sample size is changed, the confidence interval changes as the standard error depends on sample size.

About 90% percent of these confidence intervals will contain the true population proportion of Americans who favor the Green initiative and about 10% percent will not contain the true population proportion.

Step-by-step explanation:

We have to calculate a 90% confidence interval for the proportion.

The sample proportion is p=0.6619.

p=X/n=370/559=0.6619

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.6619*0.3381}{559}}\\\\\\ \sigma_p=\sqrt{0.0004}=0.02

The critical z-value for a 90% confidence interval is z=1.6449.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=1.6449 \cdot 0.02=0.0329

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.6619-0.0329=0.6290\\\\UL=p+z \cdot \sigma_p = 0.6619+0.0329=0.6948

The 90% confidence interval for the population proportion is (0.6290, 0.6948).

3 0
3 years ago
Find the volume <br> 6ft<br> 4ft<br> 3ft<br> (i know it’s not 72)
vlada-n [284]

Answer:

\fbox{Volume \:  of \:  pyramid \:  = 24 ft³}

Step-by-step explanation:

Given:

shape of object = Pyramidal

length of base l= 4ft

width of base w = 3ft

height of pyramid h = 6 ft

To find:

volume of pyramid = ?

Solution:

Volume  \: of \:  pyramid=  \frac{l \times w \times h}{3} \\ Volume \:  of \:  pyramid=  \frac{6 \times 4 \times 3}{3}  \\ Volume \:  of \:  pyramid=  \frac{24 \times  \not3}{ \not3}  \\ Volume \:  of \:  pyramid= 24 \:  {ft}^{3}

\fbox{Volume \:  of \:  pyramid \:  = 24 ft³}

<h3><em><u>Thanks for joining brainly community!</u></em></h3>
5 0
2 years ago
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