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2 years ago

PLEASE HELP!!!! WILL MARK BRAINLIEST!!!!

Mathematics

2 answers:

PIT_PIT [208]2 years ago

7 0

Answer:

Step-by-step explanation:

the total angle of a hexagon is 720 degrees so if we add up all the angles then take away that value from 720 we get 93

gogolik [260]2 years ago

3 0

Angle F would be 93°

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Find the reciprocal of 4/11

Rashid [163]

Answer:11/4

Step-by-step explanation: u have to just put it backwards

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3 years ago

Jordan goes to a high school with 1900 students. He surveyed a random sample of 240 students about their favorite sport, and 150

just olya [345]

Answer: answer b

Step-by-step explanation:

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3 years ago

Bill and Amy want to ride their bikes from their neighbourhood to school which is 14.4 kilometers away. It takes Amy 40 minutes

olga55 [171]

You can use the equation d=rt
Amy 14.4=40r r=0.36 kilometers/minute
Bill 14.4=20r r= 0.72 kilometers/minute
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Bill (0.72 kilometers/minute)(60 seconds/1000 meters)=0.0432 meters/second

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3 years ago

When the expression $-2x^2-20x-53$ is written in the form $a(x+d)^2+e$, where $a$, $d$, and $e$ are constants, then what is the

Sladkaya [172]

We start with $2 x^{2} -20x-53$ and wish to write it as $a(x+d) ^{2} +e$

First, pull 2 out from the first two terms: $2( x^{2} -10x)-53$

Let’s look at what is in parenthesis. In the final form this needs to be a perfect square. Right now we have $x^{2} -10x$ and we can obtain -10x by adding -5x and -5x. That is, we can build the following perfect square: $x^{2} -10x+25=(x-5) ^{2}$

The “problem” with what we just did is that we added to what was given. Let’s put the expression together. We have $2( x-5) ^{2}-53$ and when we multiply that out it does not give us what we started with. It gives us $2 x^{2} -20x+50-53=2 x^{2} -20x-3$

So you see our expression is not right. It should have a -53 but instead has a -3. So to correct it we need to subtract another 50.

We do this as follows: $2(x-5) ^{2}-53-50$ which gives us the final expression we seek:

$2(x-5) ^{2}-103$

If you multiply this out you will get the exact expression we were given. This means that:
a = 2
d = -5
e = -103

We are asked for the sum of a, d and e which is 2 + (-5) + (-103) = -106

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3 years ago

Debbie quits her job, which pays $30,000 a year, to finish her college degree. Her annual college expenses are $10,000 for tuiti

Rom4ik [11]

Answer:

Debbie's opportunity cost of attending college for the year is $42,000.

Step-by-step explanation:

Debbie quits her job, which pays $30,000 a year, to finish her college degree.

Her annual college expenses are $10,000 for tuition, $2,000 for books, and $700 for food.

So, her opportunity cost will include the amount of salary she could have earned if she continued working plus the cost of tuition plus the cost of books:

$30000+10000+2000=42000$ dollars

Therefore, Debbie's opportunity cost of attending college for the year is $42,000.

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4 years ago