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navik [9.2K]
3 years ago
9

Here is the way Brian sorted some plane sgapes

Mathematics
1 answer:
bija089 [108]3 years ago
8 0
The answer is the top one.
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The length of the shorter side of a parallelogram is 29 cm. Perpendicular line segment, which goes through the point of intersec
Katena32 [7]
A = 900cm^{2}

The area of a parallelogram can be found by taking its base (b) and multiplying by the height (h). The base has the measure of 33 +12 = 45 cm. Now, you just need to find the height of the parallelogram. The height can be found by using the pythagorean theorem (a^{2} +  b^{2} =  c^{2}. 

So, when simplified the height of the parallelogram will be found from \sqrt{ 29^{2} -  21^{2}}

The height is 20 cm. The base is 45 cm. 45 x 20 = 900. 
6 0
3 years ago
BRAINLIEST AWARD NO.2
zzz [600]

Answer:

A whole number first term to render as fifth term a value larger than 10000, should be at least 121

Step-by-step explanation:

The formula is given as recursive since it involves the previous number of the sequence, and defined as:

a_n=a_{n-1}*3+6

we also know that the first term is 4

Then in this case, the first five terms are:

a_1=4\\a_2=4*3+6=18\\a_3=18*3+6=60\\a_4=60*3+6=186\\a_5=186*3+6=564\\

So if we want to find the first term in the case that the fifth one is greater than 10,000 using this recursive formula, now we have to start backwards, and say that the fifth term is "> 10000" and what the fourth one is.

Notice that if you have this definition for the nth term, we can obtain from it, what the previous term is to find the general rule:

a_n=a_{n-1}*3+6\\a_n-6=a_{n-1}*3\\\frac{a_n-6}{3} = a_{n-1}\\a_{n-1}=\frac{a_n}{3} -2

So the rule is to subtract 6 from he term, and divide the subtraction by 3. Then working backwards:

a_5>10000\\\frac{a_5}{3} -2>\frac{10000}{3} -2\\a_4>=\frac{10000}{3} -2\\\frac{a_4}{3} -2>\frac{\frac{10000}{3}-2}{3}-2 =\frac{10000}{9}-\frac{8}{3} \\a_3>\frac{10000}{9}-\frac{8}{3} \\\frac{a_3}{3} -2>\frac{\frac{10000}{9}-\frac{8}{3} }{3} -2=\frac{10000}{27} -\frac{8}{9} -2=\frac{10000}{27} -\frac{26}{9}\\a_2=\frac{10000}{27} -\frac{26}{9}\\\frac{a_2}{3} -2>\frac{\frac{10000}{27} -\frac{26}{9}}{3} -2=\frac{10000}{81} -\frac{80}{27} \\a_1>\frac{10000}{81} -\frac{80}{27}\approx 120.49

therefore, the starting first term should be at least about 121 to give a fifth term larger than 10,000

8 0
2 years ago
Use standard notation to write this number. 4.045x10^-3
Inessa05 [86]
<span>4.045 x10^-3 in standard notation = 4,045</span>
5 0
3 years ago
Read 2 more answers
1/2 (3/2 y + 1/3) = -1/2 (y- 5/2)
dem82 [27]

<em>1</em><em>/</em><em>2</em><em> </em><em>[</em><em> </em><em>(</em><em>3</em><em>/</em><em>2</em><em>)</em><em>y</em><em> </em><em>+</em><em> </em><em>1</em><em>/</em><em>3</em><em>]</em><em> </em><em>=</em><em> </em><em>-</em><em>1</em><em>/</em><em>2</em><em> </em><em>[</em><em>y</em><em>-</em><em>5</em><em>/</em><em>2</em><em>]</em>

<em>(</em><em>3</em><em>/</em><em>2</em><em>)</em><em>y</em><em> </em><em>+</em><em> </em><em>1</em><em>/</em><em>3</em><em> </em><em>=</em><em> </em><em>-</em><em>(</em><em>1</em><em>/</em><em>2</em><em>)</em><em>y</em><em> </em><em>+</em><em> </em><em>3</em>

<em>(</em><em>3</em><em>/</em><em>2</em><em> </em><em>+</em><em> </em><em>1</em><em>/</em><em>2</em><em>)</em><em>y</em><em> </em><em>=</em><em> </em><em>3</em><em> </em><em>-</em><em> </em><em>1</em><em>/</em><em>3</em>

<em>2y</em><em> </em><em>=</em><em> </em><em>8</em><em>/</em><em>3</em>

<em>y</em><em> </em><em>=</em><em> </em><em>4</em><em>/</em><em>3</em>

<u><em>y</em><em> </em><em>=</em><em> </em><em>1.33</em></u>

<em>#</em><em>$</em><em>#</em><em>HOPE</em><em> </em><em>YOU</em><em> </em><em>UNDERSTAND</em><em> </em><em>#</em><em>$</em><em>#</em>

<em>#</em><em>$</em><em>¥</em><em>THANK</em><em> </em><em>YOU</em><em> </em><em> ¥</em><em>$</em><em>#</em>

<em>❤</em><em> </em><em>☺</em><em> </em><em>☺</em><em> </em><em>☺</em><em> </em><em /><em> </em><em>☺</em><em> </em><em>☺</em><em> </em><em>☺</em><em> </em><em>❤</em><em> </em>

5 0
2 years ago
HELP PLEASE DUE IN 3 MINUTES
lapo4ka [179]

Answer:

155

Step-by-step explanation:

6 0
2 years ago
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