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3 years ago

Pls help ASAP WIll mark brainliest

Mathematics

2 answers:

Umnica [9.8K]3 years ago

5 0

Answer:

the area is 128.549 cm squared

Step-by-step explanation:

just find the area of each shape and add

i'll be back with perimeter

Alika [10]3 years ago

4 0

I think it’s 128.549

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Select the correct answer.

Zigmanuir [339]

Answer:

E. 6

Step-by-step explanation:

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3 years ago

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Which is a true statement about an isosceles right triangle?

AnnyKZ [126]

Let $l$ be the length of a leg. Using the pythagorean theorem, the hypotenuse is

$h = \sqrt{l^2+l^2}=\sqrt{2l^2}=l\sqrt{2}$

So, the hypotenuse is $\sqrt{2}$ times as long as either leg.

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3 years ago

One term of a geometric sequence is a4=135. The common ratio is r=3. Write an explicit rule for the nth term.

Anni [7]

Answer:

$a_{n} = 5 * 3^{n-1}$

Step-by-step explanation:

To find the nth term of a geometric sequence, you have the general formula:

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

where a1 is the first term and r is the common ratio. In order to find the 4th term, we can substitute what we have(n is 4 because we are looking for the fourth term):

135 = $a_{1} * 3^{4 - 1}$

135 = $a_{1} * 3^3$

135 = $27a_{1}$

$a_{1} = 5$

Now, we can substitute the first term back in:

$a_{n} = 5 * 3^{n-1}$

8 0

3 years ago

Bh+hr=25 solve for r please work it out step by step

denis23 [38]

So firstly, factor out h on the left side: $h(b+r)=25$

Next, divide both sides by h: $b+r=\frac{25}{h}$

Lastly, subtract both sides by b and your answer will be $r=\frac{25}{h}-b$

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3 years ago

Read 2 more answers

Help me pls and ty !

Naya [18.7K]

Answer:

$a=2.6-3.4b$

Step-by-step explanation:

So we have the equation:

$2.2a+3.4b=1.2a+2.6$

And we want to solve for a.

So, subtract 1.2a from both sides:

$(2.2a+3.4b)-1.2a=(1.2a+2.6)-1.2a\\1a+3.4b=2.6$

Now, subtract 3.4b from both sides:

$(a+3.4b)-3.4b=2.6-3.4b\\a=2.6-3.4b$

And that's our answer :)

7 0

3 years ago