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Yakvenalex [24]
3 years ago
9

Hi, can someone help me really fast on this...

Mathematics
2 answers:
denis-greek [22]3 years ago
8 0

Answer:

The first answer

Step-by-step explanation:

Hope this helped!

ohaa [14]3 years ago
7 0
Jan earns $4 more per hour than Eli.
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Triangle ABC had a perimeter 18 cm
Alex

Step-by-step explanation:

what is the main condition the lengths of the sides of a right-angled triangle have to fulfill ?

Pythagoras !

c² = a² + b²

c is the Hypotenuse (the baseline opposite of the 90 degree angle), a and b are the so-called legs (the sides enclosing the 90 degree angle).

only if there is a combination of the sides, for which the Pythagoras equation is true, do we have a right-angled triangle. otherwise not.

we also know CA = 18 - 7 - 3 = 8 cm

so, let's try

8² = 7² + 3²

64 = 49 + 9 = 58 wrong

7² = 8² + 3²

49 = 64 + 9 = 73 wrong

3² = 8² + 7²

9 = 64 + 49 = 113 wrong

so, there is no combination, where the Pythagoras equation is true, so it is NOT a right-angled triangle.

4 0
3 years ago
(sin (x+y)) / sinxcosy = 1+ cot(x) + tan(y)
ivann1987 [24]

Answer:

sin (×+y)/sinx cosy =1+ cotx tany

from trig ratio Sin [x +y] = sinx Cosy + cosx siny

Sinx cosy + cosox siny./Sinx cosy

then check the attachments for further information

5 0
2 years ago
Write 6 1/4% as a decimal.
Zepler [3.9K]
1.) Change the fraction to a decimal. 1÷4=.25%. then add the whole 6. 6+.25=6.25%.2.) now divide by 100. 6.25%×100=.0625. ANSWER: .0625
8 0
3 years ago
Read 2 more answers
Y is directly proportional to 1 over the square root of x if y = 7 when x = 36 find y when x = 4
Alecsey [184]

Step-by-step explanation:

y |X(the sign for protionality) 1/√x

y = 7 when x = 36

y = k/√x

7 = k/√36

7 = k / 6 cross multiply

k = 7×6

k = 42

find y when x is 4

y = 42/√x

y = 42/√4

y = 42/2

y = 21

5 0
2 years ago
Mariam is making
ira [324]

Answer:

  no

Step-by-step explanation:

A trapezoid is shown, not a bag. If we assume that this shape is supposed to be the front of the bag, Mariam does NOT have enough pink fabric to make the front of the bag from pink fabric.

The area of the trapezoid shown is ...

  A = (1/2)(b1 +b2)h

  A = (1/2)(9 in + 8 in)(15 in) = 127.5 in^2

This area is larger than the amount of fabric Mariam has, so she does not have enough.

3 0
3 years ago
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