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siniylev [52]
3 years ago
15

What is 3.8 as a fraction

Mathematics
1 answer:
artcher [175]3 years ago
6 0
3.8= 3 \frac{8}{10}= 3 \frac{4}{5}= \boxed{\frac{19}{5}}
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The hyperbola is used as a mathematical model in which of the following areas?
Anna11 [10]

Answer:

Engineering

Step-by-step explanation:

Start by eliminating illogical choices:  dentistry, business, literature.

That leaves science and engineering.

Designs of suspension bridges usually include half parabolas or half hyperbolas, which indicates that engingeering is the logical choice here.

Science is discovery and understanding of the natural, physical world, whereras engineering is the application of knowledge and tools, of which space curves (such as hyperbolas) are one.

6 0
4 years ago
Read 2 more answers
Find the value of each variable.​
insens350 [35]

Step-by-step explanation:

11)

x= 5

{y}^{2}  = 2 \times  {5}^{2}  \\  {y}^{2}  = 50 \\ y = 5 \sqrt{2}

12)

\tan(30 )  =  \frac{9}{y}  \\ y =  \frac{9}{ \tan(30) }  = 9 \sqrt{3}  \\  {x}^{2}  =  {9}^{2}  +  {(9 \sqrt{3} )}^{2}  \\  {x}^{2}  = 324 \\ x = 18

13)

\sin(60)  =  \frac{x}{22}  \\ x = 11 \sqrt{3}  \\  \cos(60)  =  \frac{y}{22}  \\ y = 11

14)

{16}^{2}  =  {x}^{2}  +  {y}^{2}  \\ x = y \\  {16}^{2}  = 2 {x}^{2}  \\ x = 8 \sqrt{2}  \\ y = 8 \sqrt{2}

15)

\tan(30)  =  \frac{x}{42}  \\ x = 14 \sqrt{3}  \\   \cos(30)  = \frac{42}{y}  \\ y =  \frac{42}{ \cos(30) }  \\ y = 28 \sqrt{3}

16)

{(19 \sqrt{2}) }^{2}  =  {x}^{2}  +  {y}^{2}  \\ x = y \\ 722 = 2 {x}^{2}  \\  {x}^{2}  = 361 \\ x = 19 \\ y = 19

4 0
3 years ago
The diameter of a circle is 3 ft. Find the circumference to the nearest tenth.
Tom [10]
To find radius
Diameter divided by 2 = radius
So it’s 1.5
To find circumference
C=2pi*radius
So 2pi*1.5=9.42
4 0
3 years ago
Read 2 more answers
(1) Ax + By = C (2) Dx + Ey = F Jim is trying to solve the system of equations. He begins by multiplying equation (1) by D and e
attashe74 [19]

Answer:

No, Angela is not correct.

As the method Jim was performing will also lead to the solution.

Step-by-step explanation:

We are given first equation as:

                  Ax + By = C

Second equation is:

                   Dx + Ey = F

Jim solved the equation as:

He begins by multiplying equation (1) by D and equation (2) by A.

and so by subtracting both the equations he will obtain a value of y.

and then put the y-value in any of the given two equations to obtain the value of x.

Angela Method:

you should have multiplied equation (1) by E and equation (2) by B.

and when she will subtract both the equations she will get the value of x first and then when she will put the value of x in any of the given equation she will obtain the value of y.

But both will get a value for x and y.

Hence, the method Jim was performing was also correct.

8 0
3 years ago
Read 2 more answers
Anyone know the answer for this?
prohojiy [21]
I think it's possible 10?
4 0
4 years ago
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