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4 years ago

Evaluate 6[5(3-9)-1)+2/7[-2)+4

1 answer:

7 0

Not sure what you did here... The brackets and parantheses are wrong, try uploading another question to answer and make sure the directions are right, and only use parentheses, no brackets. It should look like somethinng this: 6(5(3-9)-1)+2/7(-2)+4

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Someone please help me. I tried to solve it but couldn’t

Mariana [72]

Gradient = rise/run = -1/2
Thus:
y = -1/2x + c

Solve for c:
Pick a point for the values of y and x
(2,-2)

-2 = -1/2 (2) + c
c = -2 + 2
c = 0

Thus the equation is
y = -1/2x

4 0

3 years ago

Read 2 more answers

Calculate the integral of f(x,y)=8x over the region  bounded above by y=x(2−x) and below by x=y(2−y).

Elden [556K]

Answer:

$\frac{1}{3}$

Step-by-step explanation:

Let's first find the intersection points.

$y = x(2-x)\\x = y(2-y)\\y = y(2-y)(2-y(2-y))\\x = x(2-x)(2-x(2-x))$

So intersection points for x = 0, 1 and for y = 0, 1.

Now, let's write x = y(2-y) instead of y.

$x - 1 = 2y - y^2 - 1\\x - 1 = -(y-1)^2\\1-x = (y-1)^2\\y = 1 - \sqrt{1-x}$

$\int_D f(x,y)dA=\int\limits^1_0[x(2-x)-(1-\sqrt{1-x})]dx=\\\\= (x^2-\frac{x^3}{3} -x-\frac{2}{3}(1-x)^{\frac{3}{2} } )|^1_0=-\frac{1}{3} +\frac{2}{3}= \frac{1}{3}$

4 0

4 years ago

Jimmy is trying to dive down and touch the bottom of the pool. On his first try he makes it 1/3 of the way to the bottom. On his

Semenov [28]

Answer:

Jimmy's second dive was $\frac{4}{15}$ of the pool deeper than the first one

Explanation:

We are given that:

First dive was $\frac{1}{3}$ of the way to the bottom

Second dive was $\frac{3}{5}$ of the way to the bottom

We know that the second dive was deeper than the first one since $\frac{3}{5} > \frac{1}{3}$

To know how much deeper the second dive was compared to the first one, we will simply subtract the depth of the first dive from that of the second one

Therefore:

The second dive was $\frac{3}{5} - \frac{1}{3} = \frac{9}{15} - \frac{5}{15} = \frac{4}{15}$ of the pool deeper than the first one

Hope this helps :)

5 0

3 years ago

Estimating a decimal sum or difference Estimate 18.71 +5.149 by first rounding each number to the nearest tenth.

wel

Answer: 24

Step-by-step explanation:
If you round 18.71 to the nearest tenth it = 18.7 and the other one is 5.100 or 5.1 18.7+5.1=23.8 and that rounds up to 24

I dont know if this is what the question meant sorry if its not but I tried

8 0

2 years ago

Using Euler's formula, how many

Sonja [21]

Answer:

F+V=E+2

F=6

V=8

E=?

PUT THEIR VALUE

6+8=E+2

= 14=E+2

=14-2=E

=12=E

VALUE OF E IS 12

7 0

2 years ago