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Fittoniya [83]
4 years ago
13

Write 0.87 as a fraction

Mathematics
1 answer:
Klio2033 [76]4 years ago
7 0

isnt it 87/100 as a fraction?

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I have attached the question below
aniked [119]

\text{The perimeter of the semicircle} = \text{radius}(\pi+2)=3(\pi+2)~cm=(3\pi + 6) ~cm\\

4 0
2 years ago
Estimate 1 13 cos(x2) dx 0 using the Trapezoidal Rule and the Midpoint Rule, each with n = 4. (Round your answers to six decimal
babunello [35]

Answer:

(a) 4.152698

(b) 3.215557

Step-by-step explanation:

(a)

\int\limits^{13}_1 {cos(x^2)} \, dx =M_n=$\sum_{n=1}^{\infty} f(m_i)\Delta x $

n=4, so :

Each subinterval has length :

\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3

Therefore the subintervals consist of:

[1,5], [5,9], [9,13]

Now, the midpoints of these subintervals are:

\frac{1+5}{2} =3\\\\\frac{5+9}{2} =7\\\\\frac{9+13}{2} =11

Hence:

M_4= 3*(cos(3^2))+3*(cos(7^2))+3*cos((11^2))\approx 4.152698

(b)

\int\limits^{13}_1 {cos(x^2)} \, dx =T_n=\frac{\Delta x}{2} (f(x_o)+2f(x_1)+2f(x_2)+...+2f(x_n_-_1)+f(x_n))

n=4, so :

Each subinterval has length :

\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3

Therefore the subintervals consist of:

[1,5], [5,9], [9,13]

The endpoints of the subintervals consist of:

5,9

Hence:

T_4= \frac{3}{2}(cos(1^2)+2*cos(5^2)+2*cos(9^2)+cos(13^2)) \approx 3.215557

8 0
3 years ago
Round 855.788 to the nearest tenth
kykrilka [37]

Answer:

855.8

Step-by-step explanation:

hundreds  tens   ones  .  tenths  hundredths   thousandths

8                   5        5     .     7             8                         8

We are rounding to the nearest tenth, so we look at the next number which is 8.  8>= 5 so we will round the 7 up

855.788 rounds to 855.8

4 0
4 years ago
Help please! - "Enter The Equation of the line in the form y= mx where m is the slope."​
Dmitry [639]

Answer:

y = 1/2x

Step-by-step explanation:

Choose two points- I chose (10,5) and (0,0)

Find the slope using y2-y1/x2-x1

Use y - y1 = slope (x -x1) to get your equation

The answer should be y =1/2x

Hopefully this helps- let me know if you have any questions

5 0
3 years ago
Need help ASAP!! WILL give Brainly!!! Need the full equation!! THANK YOU!!
vekshin1

Answer:

y =  -  \frac{6}{8}x - 3

8 0
3 years ago
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