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solong [7]
4 years ago
8

Evaluate the expression 8-4xy^2 for x=3 and y=-2.

Mathematics
2 answers:
Dennis_Churaev [7]4 years ago
8 0

Answer:

-40 is the answer when plugging in x and y into the equation given

dusya [7]4 years ago
3 0
X-4xy^2
3-4*3*-2^2
3-12-4
-13

Just put the value and factorize it with BODMAS rule.
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Please help I dont understand
Anastasy [175]

Answer:

Angle 2=160

Angle 3=10

Step-by-step explanation:

The rhombus is made up of two isoceles triangle.

Angle 1 measures 160.

Since the triangle is a isoceles triangle, the opposite angles of the congruent sides is equal angles to each other.

So the reamaing angles in the top triangle are equal so we can use this equation

Remeber that triangle maximum degree it can hold is 180

160 + x + x = 180

160 + 2x = 180

2x = 20

x = 10

We have two congruent triangle side they share Three sides. SSS

This means the corresponding angle of Angle 1 is Angle 2.

Angle 2=Angle 1 by CPCTC.

Angle 2=160

Angle 3 corresponds with one of the remaining congruent angles so it measures

10.

8 0
3 years ago
Need a refresh on scientific notation? help.
Dmitrij [34]
Scientific notation can be scary but it really is simple
the exponent after the 10 is how many places you move the decimal. If it is positive you move it right, if it negative you move it left
2 x 10^2 means you move the decimal place right twice to make 200
4 x 10^-3 means you move the decimal place left three times to make .004
The question is asking you to multiply 900000 and .0000006
6 0
3 years ago
Find an equation in slope-intercept form of the line that has slope -7 and passes through point A (-7, - 2)
Svetllana [295]
Perhaps you’ve written the answers out incorrectly. Answers A and B are the same.

The correct answer is:
y = -7x - 51

4 0
3 years ago
Lessons are 55 mins long, a history lesson ends at 3:30 pm at what time does the lesson start
Mandarinka [93]

Answer:

2:35 pm

If an hour is 60 minutes, what we know is that 30 minutes is half. However, we must subtract 55 from 30 (In time)

To make this easier, subtract 55 by actual 30, and split 55 into 2 parts, the result of subtraction, and the other value, 30

55-30=25

Now, subtract.

3:30 - 30 = 3:00

3:00-25=35

If this is the case, the lesson must have started at 2:35 pm

6 0
2 years ago
Monica is 2 years older than Liam. Emmett is 34. Brittany is 5 years older than Emmett and 4 years older than Liam. How old is L
Andreas93 [3]

Answer:

She is 30

Explanation:

Because if you read it right it says "Emmett is 4 years older than Liam." Also you had a grammar error in it.

6 0
4 years ago
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