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bogdanovich [222]
3 years ago
15

I need help with number 11

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

-b/2a is the equation to find the x coordinate of the vertex point and it's y, when x is plugged into the quadratic equation.

Step-by-step explanation:

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40% of the students love the museum .if there are 20 students on the field trip. how many love the museum.
Kaylis [27]
So in my opinion I think u have to do 20-4=16 so 16 students like the museum! Sorry if I’m wrong
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3 years ago
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PLEASE HELP ASAP
gayaneshka [121]

Answer:

Real numbers are Closed under multiplication.

Irrational numbers are Not Closed under division.

Integers are Closed under subtraction.

Positive rational numbers are Closed under addition.

Step-by-step explanation:

a) The product of any two real numbers is a real number, so the set is closed.

b) In some cases, the quotient may be rational. (√18)/(√2) = 3, for example. So, the set is not closed.

c) The difference of any two integers is an integer, so the set is closed.

d) The sum of any two positive rational numbers is a postive rational number, so the set is closed.

Sorry if its out of order but i hope it helps enough

8 0
4 years ago
Please help me! I will brainliest u
Inga [223]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Is the question What was the high temperature on March 8 of last year? a statistical question? Explain.
Kryger [21]
Yes, by definition a statistical question is answered by collecting data and where there will be variability in that data.
4 0
3 years ago
Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the P
Oxana [17]

Answer:

<h2>Unknown side = 28</h2><h2>tan B = 7/24</h2>

Step-by-step explanation:

The question is incomplete. Here is the complete question.

Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the value of the indicated trigonometric function of the given angle. Rationalize the denominator if applicable. Find tan B when a = 96 and c = 100.

Pythagoras theorem states that the square of the hypotenuse side of a right angled triangle is equal to the sum of the square of its other two sides. Mathematically c² = a²+b² where c is the hypotenuse and a,b are the other two sides.

From the question, we are given a = 96 and c = 100, to get the unknown side 'b', we will substitute the given values into the formula above;

c² = a²+b²

100²  = 96² +b²

b²  = 100²  - 96²

b²  = 10,000 - 9216

b²  = 784

b = √784

b = 28

Hence, the unknown length is 28.

To get tanB, we will use the SOH, CAH, TOA trigonometry identity

According to TOA, tan B = opposite/adjacent

tan B = b/a (note that side b is the opposite in this case since the angle we are considering is B)

Given b = 28 and a = 96

tan B = 28/96

tan B = 4*7/4*24

tan B = 7/24

8 0
3 years ago
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