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tatyana61 [14]
3 years ago
5

Find the value of the expression: x(x-y)-y(y^2-x) for x=4 and y=2

Mathematics
1 answer:
svet-max [94.6K]3 years ago
4 0

Replacing x by 4 and y by 2, it is found that the value of the expression is of 8.

The expression given is:

x(x - y) - y(y^2 - x)

We want to evaluate it for x=4 and y=2, hence, we replace x by 4 and y by 2, then:

4(4 - 2) - 2(2^2 - 4) = 4(2) - 2(0) = 8

The value of the expression is of 8.

A similar problem, in which the objective is finding the value of an expression, is given at brainly.com/question/19548262

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the bus to Leeds departs every 36 mins and the bus to Manchester leaves every 45 mins they leave the station at 10am one morning
Oliga [24]

Answer:

1 pm

Step-by-step explanation:

We have to find their LCM, or least common multiple

Multiples of 36: 36, 72, 108, 144, 180, 216, ......

Multiples of 45: 45, 90, 135, 180, ....

180 mins is their LCM.

180 mins = 3 hours

10am + 3hours = 1 pm

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3 years ago
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7 0
3 years ago
What is the average rate of change of the function f(x) = 4x – 2 over the interval x = –1 and x = 2?
Alexeev081 [22]

Answer:

4

Step-by-step explanation:

Given: f(x)=4x-2

To find:  average rate of change of the function f(x)=4x-2 over the interval x=-1 and x=2

Solution:

Take a=-1,\,b=2

Find f(a),\,f(b)

f(a)=f(-1)\\=4(-1)-2\\=-4-2\\=-6\\\\f(b)=f(2)\\=4(2)-2\\=8-2\\=6

Average rate of change of the function =\frac{f(b)-f(a)}{b-a}

=\frac{f(2)-f(-1)}{2-(-1)}\\\\=\frac{6-(-6)}{3} \\\\=\frac{12}{3}\\\\=4

7 0
3 years ago
How can properties of operations help to generate equivalent expressions that can be used in solving problems ?
svet-max [94.6K]
I’m not the best at math, but ⬇️

For example, apply the distributive property to the expression 3(2 + x) to produce the equivalent expression 6 + 3x; apply the distributive property to the expression 24x + 18y to produce the equivalent expression 6 (4x + 3y); apply properties of operations to y + y + y to produce the equivalent expression 3y
6 0
4 years ago
Please provide answer and explanation as to how you got there!!
tatyana61 [14]

Answer:

it should be 1485

Step-by-step explanation:

You have to multiply

8 0
3 years ago
Read 2 more answers
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