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TEA [102]
3 years ago
10

Please Help I'm in need for help

Mathematics
1 answer:
Mama L [17]3 years ago
5 0
I hope this helps you

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If it takes 2 hours to travel a distance of 120 km, how long would it take to travel 210km if the rate remained the same?
SVETLANKA909090 [29]

Answer:

about 3.5 hrs

Step-by-step explanation:

4 0
3 years ago
What mathematical pattern can be seen in a perfect square trinomial and how is the pattern used to factor the trinomi
Shtirlitz [24]
(a ± b)² = a² ± 2ab + b² . . . . . . . (signs match)

The middle term is twice the product of the roots of the other two terms. This tells you the terms of the binomial are the square roots of the end terms.

The sign in the binomial will match the sign of the "2ab" term. The order of terms in the binomial doesn't matter. (a±b)² = (b±a)² when signs match.
8 0
3 years ago
If sinX= 0.9, what is the value of cos X?<br><br> Round the value to the nearest thousandth.
SSSSS [86.1K]

Answer: sqrt(19)/10

Step-by-step explanation:

sinx=0.9

x=arcsin(0.9)


Insert x for cos(x):

cos(arcsin(0.9)=

Use identify cos(arcsin(x))=\sqrt{1-x^{2} }, so

\sqrt{1-(\frac{9}{10})^{2}} =\sqrt{\frac{19}{100} } =\frac{\sqrt{19}}{10}


Sorry if this is confusing.



6 0
3 years ago
Algebra 1: Factoring Polynomials Factor the common factor out of each expression: 40n^4m^2+40n^3m^3-32n^3
Nina [5.8K]
Taking out the greatest common factor

GCF of 40, 40 and 32  = 8
GCF of n^4, n^3 and n^3  is n^3

so the factors are

8n^3(5nm^2 +5m^3 - 4)
7 0
3 years ago
Laloni is participating in her school's
Vlad1618 [11]

Answer:

Step-by-step explanation:

In order to find an average you need to add all the numbers you have and then divide your sum by the amount of numbers you added.

195+52+206=432

432 divided by 3= 151

That is the answer, 151.

4 0
3 years ago
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