All categories

2 years ago

Can someone help me please and thxxx

Mathematics

2 answers:

SOVA2 [1]2 years ago

8 0

Answer:

x = $8\sqrt{3}$

y = $4\sqrt{3}$

Step-by-step explanation:

• tan 60° = 12/ y [tan θ = opposite/ adjacent]

y = 12/ tan 60°

y = $4\sqrt{3}$

• x² = y² + 12² [Pythagoras's theorem]

x² = ( $4\sqrt{3}$ )² + 144

x = $\sqrt{(4\sqrt{3})^{2} \space\ + \space\ 144}$

x = $8\sqrt{3}$

kompoz [17]2 years ago

6 0

Answer:

Step-by-step explanation:

cos 30=12/x

$x = 8 \sqrt{3}$

cos60=y/x

$y =4 \sqrt{3}$

You might be interested in

An average person in the United States throws away 4.5 × 10² grams of trash per day. In 2013, there were about 3.2×106 people in

enyata [817]

Answer:

Since there are 4.5*10^2 grams of trash per day per person, we multiply that by 3.2*10^6 for everyone in the US and then multiply that by 365 to get how much in a year, which is 525600000000 or 5.256*10^11 (I think it's 11)

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Write a rule for a geometric sequence that has a 1 as its first term and a common ratio of -4. what is the seventh term of this

ivann1987 [24]

I hope first term is 1.

Hope this is your question, if not I think you will, still be able to

find an answer of your question based on this solution.

The formula for general term of a geometric sequence is,

$a_{n} =a_{1} *r^{n-1}$

Where, first term: a_{1} =1 and common ratio: r = -4.

So, first step is to plug in the values of a1 and r in the above formula to get the rule of this geometric sequence. Hence,

$a_{n} =1 *4^{n-1}$

$a_{n} =4^{n-1}$

So, the rule of the geometric sequence is $a_{n} =4^{n-1}$ .

To find the seventh term, plug in n = 7 in the above rule. Therefore,

$a_{7} =4^{7-1}$

= $4^6$

= 4096

Hope this helps you!.

6 0

3 years ago

write an equation of the line in slope intercept form that passes through the hiven point and is partalel to the hiven line (7,1

Tomtit [17]

y=6x-41 i believe because if you bring the -6x over it is in slope intercept all you have to do is plug in the points to get the y intercept

4 0

4 years ago

Find the exact roots of the polynomial; write the roots in simplest radical form, if necessary.

Liula [17]

I can see that 2 is a root but not 1? So I tried -1 by substitution and that works.

So to work out the 3rd root we just use the sum and product of roots theorem.

We have the sum of the roots = 11/7 and from there the third root is 4/7

8 0

3 years ago

A box contains 10 tags, numbered 1 through 10, with a different number on each tag. A second box contains

Tju [1.3M]

Answer:

(E) 29.0

Step-by-step explanation:

If a tag is drawn at random from each box, the expected value of the sum of the tags is the sum of the expected values for each tag.

The expected value for each tag is the mean value of the numbers in its box.

$EV = \frac{1+2+3+4+5+6+7+8+9+10}{10} +\frac{20+21+22+23+24+25+26+27}{8} \\EV = 5.5 +23.5\\EV= 29$

The expected value of the sum of the numbers on the two selected tags is 29.

4 0

3 years ago