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2 years ago

Evaluate the expression. x2−4x for x=−1 no links or files pls.

Mathematics

1 answer:

qaws [65]2 years ago

7 0

Answer:

${x}^{2} - 4x \\ {( - 1)}^{2} - 4( - 1) \\ 1 + 4 = 5$

I hope I helped you^_^

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Franklin measured and labeled the angles of a triangle as shown. Jennifer says that at least one of his measures is incorrect. E

ioda

Answer:

see the explanation

Step-by-step explanation:

First way

we know that

The sum of the interior angles of a triangle must be equal to 180 degrees

In this problem

37+97+134 > 180

therefore

At least one of Franklin's measures is incorrect

Second way

we know that

A triangle can only have at most one obtuse internal angle.

In this problem the triangle has two obtuse internal angles

Remember that an obtuse angle is an angle greater than 90 degrees

therefore

At least one of Franklin's measures is incorrect

6 0

3 years ago

PLEASE!! I NEED HELP

elixir [45]

Answer:

Option A, $\frac{1}{7}$

Step-by-step explanation:

Step 1: Determine the numbers that are multiples of 3

8 → Not a multiple of 3

9 → Multiple of 3

14 → Not a multiple of 3

19 → Not a multiple of 3

25 → Not a multiple of 3

34 → Not a multiple of 3

38 → Not a multiple of 3

Step 2: Determine the probability of chosing a multiple of 3

Since we only have 1 number that is a multiple of 3 out of the 7 given numbers, that means that we do the following:

$\frac{(1\ multiple\ of\ 3)}{7\ total\ numbers}$

$\frac{1}{7}$

Answer: Option A, $\frac{1}{7}$

6 0

2 years ago

Hey can you please help me posted picture of question

mr_godi [17]

It could be B but double check to be sure

3 0

3 years ago

Read 2 more answers

A) what is the slope of the parallel to y=2x+3

tekilochka [14]

Answer:

a) 2 b) -1/2

Step-by-step explanation:

a) im pretty sure the question only asks for the slope of the parallel line y=2x+3, that that would be 2 because they have the same slope

b) the question is phrased weird, but im assuming it wants the same thing from a, (the slope) and the slope of a perpendicular like is always the opposite reciprocal of the original number

for example in y=2x+3:

2 is the original slope

meaning that the perpendicular would be -1/2

the images above are just examples and are not related to the answer

6 0

3 years ago

Going into the final exam, which will count as two tests, Brooke has test scores of 75, 82, 70, 65, and 90. What score does Broo

dusya [7]

Brooke needs to get a 98 on the final to get an average of 80.
So you know that the total of the five given score is 382 by adding all the scores.
Now you multiply the average, 80 by 6 for the total of six tests including the final which is 480
Then you subtract 480-382 to find your answer.

4 0

3 years ago