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stepladder [879]
3 years ago
11

Fernando evaluated the expression below. What was Fernando’s error?

Mathematics
2 answers:
iragen [17]3 years ago
5 0
C. Fernando incorrectly found the product of -2 and -5

<span>(should be +10 instead of -10)</span>
bearhunter [10]3 years ago
4 0

Answer:

C. Fernando incorrectly found the product of -2 and -5.

Step-by-step explanation:

We have been given an image, which represents work of Fernando's evaluation of an expression. We are  asked to find the error in Fernando's work.

\frac{5(9-5)}{2}+(-2)(-5)+(-3)^2

Let us evaluate our given expression using order of operations (PEMDAS).

\frac{5(4)}{2}+(-2*-5)+9

\frac{20}{2}+10+9

10+10+9

29

Since we know that product of two negative numbers is always positive, therefore, the product of negative 2 and negative 5 will be positive 10.

Therefore, Fernando incorrectly found the product of -2 and -5 and option C is the correct choice.

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"two angles are supplementary. the measure if one angle is 10 mire than three times the other. Find the measure of each angle.".
jolli1 [7]
If two angles are supplementary, their measures add to 180 degrees.

Let’s name the angles A and B.


You can substitute or replace angle B in the first equation with the second equation like so:

4
So, angle A is 42.5 degrees and angle B is 137.5 degrees!
7 0
4 years ago
Which expression is equivalent to:1/m6
Valentin [98]

Answer:

A

Step-by-step explanation:

6 is a power. So both C and D are wrong because 6 is being treated as an ordinary integer.

So the answer must be either A or B.

B is not correct because to move an expression from the denominator to the numerator changes the sign in the base (which is m in this  question).

A is correct. the power is changed from 6 in the denominator to -6 in the numerator. m is shifted to the numerator as well.

8 0
3 years ago
if you vertically compress the absolute value parent function f(x)=|x| by a factor of 3 what is the equation of the new function
Sphinxa [80]

Answer:

The equation for new function is y=\frac{1}{3}|x|

Step-by-step explanation:

We have been given the absolute value parent function f(x) = |x| and this function is vertically compressed by a factor 3.

If we multiply the function with a constant (say a) then the parent function will get stretch/compressed vertically.

We have below conditions for vertical stretch and compression.

a > 1 => vertically stretch

0 < a < 1 => vertically compression

Hence, in order to vertical compression by a factor 3, we have to multiply the whole function by 1/3

Therefore, the equation for new function is y=\frac{1}{3}|x|

5 0
4 years ago
ABC is a right triangle, A is located at the origin, B is the right angle, AB = 12, and BC = 5. Find the coordinates of point C
horsena [70]
If B lies along the positive x-axis, then the coordinate of B is (12, 0). Since the right angle is at B and BC is 5, it means that C is 5 units above B.
Therefore, the coordinate of C is (12, 5)
8 0
3 years ago
Read 2 more answers
Sorting numbers prime or composite
murzikaleks [220]

prime: 11, 13, 29

composite: 10, 15, 21

7 0
4 years ago
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