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3 years ago

Is 13 cm, 14 cm, and 15 cm a right triangle?

Mathematics

1 answer:

scoray [572]3 years ago

8 0

Answer:

Not a triangle

Step-by-step explanation:

First you have to use the Pythagorean theorem

a^2 +b^2=c^2

13^2+14^2=15^2

13*13=169

14*14=196

15*15=225

169+196=225 is not true

This IS NOT a right triangle

I hope this helps!

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Find the product. (-5a2)3 · a5

lesya692 [45]

Answer:

$-125a^{11}$

Step-by-step explanation:

The expression that we have in this problem is

$(-5a^2)^3\cdot a^5$

First of all, we proceed by evaluating the power of the term in the brackets. We apply the rule:

$(a^m)^n=a^{m\cdot n}$

$(a^2)^3=a^6$

Moreover, we have

$(-5)^3=-125$

Therefore,

$(-5a^2)^3=-125 a^6$

So now the expression is

$-125a^6 \cdot a^5$

Now we apply the following rule:

$a^m \cdot a^n = a^{m+n}$

So we have

$a^6\cdot a^5 = a^{6+5}=a^{11}$

Therefore, our expression becomes:

$-125a^6\cdot a^5=-125a^{11}$

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3 years ago

What is the slope of the line shown below?

erik [133]

Answer:

C) 2

Step-by-step explanation:

7 0

3 years ago

X^2 =80. Write the exact answer using radicals

DanielleElmas [232]

Answer:

4√5, -4√5

Step-by-step explanation:

x^2 = 80

√x^2 = √80

x = 8.9 or 4√5

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3 years ago

A car is traveling at a steady speed. It travels 15 mil

joja [24]

Answer:

Step-by-step explanation:

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2 years ago

What is the recursive rule for an=4n−1? a1=4;an=an−1−1 a1=3;an=an−1+4 a1=−1;an=an−1+4 a1=3;an=an−1−1

navik [9.2K]

Plug in n = 1 into the nth term formula
a(n) = 4n-1
a(1) = 4*1-1
a(1) = 3
So the first term is 3

The second term will be 7 because we add on 4 each time, as indicated by the slope of 4. This is also known as the common difference.

So the nth term is found by adding 4 to the (n-1)st term, in other words,
a(n) = a(n-1)+4

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In summary, the answer is
a1=3; an=an-1+4
which is choice B

4 0

3 years ago

Read 2 more answers