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2 years ago

67 to the square root of 78

Mathematics

2 answers:

Leni [432]2 years ago

5 0

1.34 is your answer @Pineappleisboss

galben [10]2 years ago

5 0

$67 \sqrt{78} = 591.72797804397
$

Rounded to 590

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PLZZZZZ NEED HELP!!!!!!

mylen [45]

Remember the rules of Sohcahtoa (Sine, cosine, tangent). For this problem we take the cosine of 38 because the labeled sides are the adjacent leg and the hypotenuse.

Cos(38)=79/x

Cosine of 38 is about 0.7880

0.7880=79/x

Next we multiply both sides by the denominator

(x) 0.7880=79 (x)

Then divide.

0.7880x= 79

0.7880 0.7880

X=100.25

Hope this helped :)

5 0

2 years ago

-5/2 x (3x + 4) < 6x - 3x Please show work

Pie

Answer:

$x > - \frac{20}{21}$

Step-by-step explanation:

-5/2 × (3x + 4) < 6x - 3x

-15/2x - 10 < 3x

-15x - 20 < 6x

-15x - 6x < 20

-21x < 20

x > -20/21

8 0

2 years ago

Read 2 more answers

Celeste hiked 1.8 miles in 0.75 hours.What is her average rate of speed?

Ilya [14]

Answer:

average speed of hiker is 2.4 mph

Step-by-step explanation:

here is the solution : -

=》

$speed = \frac{distance}{time}$

=》

$speed = \frac{1.8}{0.75}$

=》

$speed = 2.4$

average speed of hiker is 2.4 miles per hour

5 0

2 years ago

A tube is being stretched while maintaining its cylindrical shape. The height is increasing at the rate of 2 millimeters per sec

hoa [83]

Answer:

V = πr²h

S=2πrh

h= 2/3 millimeters

new height= 8/3 millimeters

S= 8π millimeters square

New surface area = 32π millimeters square

Step-by-step explanation:

The volume of the cylinder is given by V = πr²h where r is the radius and h is the height.

The surface area of the cylinder is given by S= 2πrh + 2πr²

Where πr² gives the area of the base and 2πr² gives the area of the top and bottom surfaces. The surface area S of a cylinder, not including the top and bottom of the cylinder, is therefore S=2πrh.

V = πr²h

96π= π (6*6) (h+2)

96 = 36 (h+2)

96/36= h+2

h= 96/36-2

h= 96-72/36

h= 24/36

h= 4/6

h= 2/3 millimeters

New height

h + 2= 2/3 + 2

= 2+6/3= 8/3 millimeters