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Lena [83]
2 years ago
7

3x+4 = 4(2x+9) Please Help I CANT DO THIS!!!

Mathematics
2 answers:
Elina [12.6K]2 years ago
7 0
I hope I can help you

LiRa [457]2 years ago
6 0

Answer:

x=(14+sqrt(88))/6=(7+sqrt(22))/3=3.897 can i get brainliest?

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A restaurant hostess is paid $50 plus 10% of the waitstaff’s tips for each night she works. If y represents her pay each night a
andrew11 [14]

Answer:

Y+x=5

Step-by-step explanation:

3 0
4 years ago
PLS HELP ME I WILL DO ANYTHING PLS
Over [174]

Answer: It's 64 with no remainder

8 0
3 years ago
Read 2 more answers
Which equation can be used to find the surface area of the cylinder?
sergij07 [2.7K]

Answer:

S = 2π(36) + 2π(6)(8)

S = 2(3.14)(36) + 2(3.14)(6)(8)

Step-by-step explanation:

The surface area of a cylinder is the sum of the area of the base and the lateral area. A cylinder has 2 circular base .

Surface area = 2πr² + 2πrh

surface area = 2πr(r + h)

where

r = radius

h = height

surface area = 2πr(r + h)

r = 6 cm

h = 8 cm

The equation to find the surface area is represented below.

Surface area = 2πr² + 2πrh

S = 2π (6²) + 2π (6)(8)

S = 2π(36) + 2π (6)(8)

Assuming π is given as 3.14 the equation will be as follows

S = 2(3.14)(36) + 2(3.14)(6)(8)

5 0
3 years ago
Britany is reading a book. She is able to read about 2 chapters each day. Assuming that, on average, each chapter contains 9.65
KiRa [710]

Answer:

38 to 40.

Step-by-step explanation:

If you round 9.65 to 10, and do the math it would be:

2 x 10 = 20

20 x 2 = 40

6 0
3 years ago
X=<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%2B%5Csqrt%7B3%7D%20%7D" id="TexFormula1" title="\frac{1}{2+\sqrt{3} }" al
iren [92.7K]

Answer:

4

Step-by-step explanation:

Simplify x and y by rationalising the denominator of both

To rationalise the denominator multiply the numerator/ denominator by the conjugate of the denominator.

The conjugate of 2 + \sqrt{3} is 2 - \sqrt{3}

The conjugate of 2 - \sqrt{3} is 2 + \sqrt{3}

x = \frac{1(2-\sqrt{3)} }{(2+\sqrt{3})(2-\sqrt{3})  } = \frac{2-\sqrt{3} }{4-3} = 2 - \sqrt{3}

y = \frac{1(2+\sqrt{3}) }{(2-\sqrt{3})(2+\sqrt{3})  } = \frac{2+\sqrt{3} }{4-3} = 2 + \sqrt{3}

Thus

x + y = 2 - \sqrt{3} + 2 + \sqrt{3} = 4

5 0
3 years ago
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