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3 years ago

A) <1 = <8 B) <4 = <7 C) m<2+m<5=180 D) m<3+m<8=180

Mathematics

1 answer:

Sati [7]3 years ago

3 0

If it is asking for the incorrect statement, it would be “B”

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If f(x) = 2x-7 and g(x)= x2-5, find g[f(5)]

Georgia [21]

Answer:

4x-12

Step-by-step explanation:

2x-5[2x-7(5)}=2x+2x-7-5

4x-12

negative integers are added to each other

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3 years ago

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X^2-4x-5x=0 <img src="https://tex.z-dn.net/?f=x%20%7B2%7D%20%20-%204x%20-%205x%20%3D%200" id="TexFormula1" title="x {2} - 4x

Bogdan [553]

Answer:

x = 9 or x = 0

Step-by-step explanation:

Solve for x over the real numbers:

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x^2 - 4 x - 5 x = x^2 - 9 x:

x^2 - 9 x = 0

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x (x - 9) = 0

Split into two equations:

x - 9 = 0 or x = 0

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Answer: x = 9 or x = 0

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3 years ago

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How many different ways can 3 singers be selected from 5 who came to an audition

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This is known as "5 take 3", where ordering is not important.

$\binom{5}{3} = \frac{5!}{3!(5-3)!} = \frac{120}{6\cdot2} = 10$

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3 years ago

A turkey costs $1.05 per pound. There are going to be fifteen people at Thanksgiving dinner. Plan for each person to eat two, 3/

valina [46]

Answer:

I will need to buy 22.5 pounds of turkey and pay $23.63

Step-by-step explanation:

Proportions

Each person is planned to eat 2 x 3/8 pound servings of turkey for thanksgiving dinner. This means each person will eat

$2\cdot\frac{3}{4}=\frac{3}{2}$

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There are going to be 15 people at the dinner, thus the total turkey needed is:

$15\cdot\frac{3}{2}=22.5~pounds$

The turkey costs $1.05 per pound, thus the total cost is

22.5*$1.05 = $23.63

I will need to buy 22.5 pounds of turkey and pay $23.63

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3 years ago

Consider a coordinate system in which the positive x axis is directed upward vertically. What are the positions of a particle (a

Elena L [17]

Answer:

a) (5,0)

b) (2,0)

Step-by-step explanation:

(a) A particle that lies 5.0 m directly above the origin would have its x-coordinate be 5 and its y-coordinate be 0. So (5,0).

(b) A particle that lies 2.0 m directly below the origin would have its x-coordinate be 2 and its y-coordinate be 0. So (2,0).

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4 years ago