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Len [333]
3 years ago
6

Urgent!! Math help!!

Mathematics
2 answers:
nasty-shy [4]3 years ago
5 0

Answer:

8.4cm

Step-by-step explanation:

we have to apply the pythagorean theorem and we will get that x^2=11^2-7^2

x^=121-49=72

x=sqrt72=8.4

AleksAgata [21]3 years ago
5 0

Answer:

6√2

Step-by-step explanation:

this makes a right angled triangle

hypotenuse=11

one adjacent sides=7

by pythagora's theorem=

adjacent side²+adjacent side²=hypotenuse²

∴ ײ+7²=11²

ײ+49=121

ײ=121-49

x²=72

x=√72

x=6√2

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3 years ago
What is the period for the function y = -4 cos (5x +3)? (4.3)
BlackZzzverrR [31]

The periodicity of function is \frac{2 \pi}{5}

<em><u>Solution:</u></em>

Given that we have to find the period of function

<em><u>Given function is:</u></em>

y = -4 + cos(5x+3)

<em><u>Use the below formula:</u></em>

\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}{|b|}

Thus,

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4 0
3 years ago
Is there a commutative property of subtraction that states a-b=b-a? investigate and make a conclusion that you justify.
Rom4ik [11]

No is your answer

Assuming that b ≠ a, the answers will not be the same.

For example, (remembering that b ≠ a) let us assume that b = 10, a = 5

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So the commutative property of subtraction does not work unless in certain cases, in which a = b.

hope this helps

5 0
3 years ago
A rectangles width is 13 more than its length. If the perimeter is 82 feet what is the length and width.
docker41 [41]

Answer:

Step-by-step explanation:

Lenght should be the greater here. I am considering your question however.

Let length side is 'x'.

The width side is 'x +13'

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given that perimeter is 82

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length is 28

width is 41

4 0
4 years ago
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