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3 years ago

Plzz help. Giving everything. D. 24.5

Mathematics

1 answer:

Lemur [1.5K]3 years ago

3 0

Answer:

$\frac{8}{14} = \frac{14}{x+2}$ (since they're similar, set them up as a proportion to find x)

14*14 = 8(x+2) (cross multiply, solve the left side, and distribute the right side)

196 = 8x +16 (subtract 16 from both sides)

180 = 8x (divide both sides by 8)

x= 22.5 (is your answer, or C)

Step-by-step explanation:

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Miguel has $20. He spends $6.25 on a movie ticket, $3.70 for snacks, and $1.25 for bus fare each way.

Harrizon [31]

20-6.25-3.7-1.25-1.25= $7.50
Has has $7.50 left over.

7 0

3 years ago

1-1 Relations and Functions The following list details the numbers of tickets sold for a talent show: grade 9: 22; grade 10: 32;

zlopas [31]

Answer:

$Domain = \{9, 10, 11, 12\}$

$Range = \{22, 32, 41, 30\}$

Step-by-step explanation:

Given

Grade 9: 22

Grade 10: 32

Grade 11: 41

Grade 12: 30

Required

Determine the domain and the range

The domain and range of a function is represented as thus (x,y)

From the given parameters;

$(x,y) = (Grade\ 9, 22), (Grade\ 10, 32) (Grade\ 11, 41), (Grade\ 12, 30)$

Remove "Grade" to represent as only digits

$(x,y) = (9, 22), (10, 32), (11, 41), (12, 30)$

Split to x and y values:

Where x = domain and y = range

$Domain = \{9, 10, 11, 12\}$

$Range = \{22, 32, 41, 30\}$

So, from the list of given options; option C answers the question.

4 0

3 years ago

A survey about the art program at a school found that 250 students wanted an after-school art program, 150 students wanted art c

Harman [31]

250 out of 500 students is going to give you 0.5. After that you will need to multiply that number by 360. your equation will look something like this: 0.5 x 360 = 180
your welcome! :)

8 0

3 years ago

Find the value of x for which abcd must be a parallelogram

aleksandr82 [10.1K]

Answer:

x = 7

Step-by-step explanation:

3x - 17 = 25 - 3x

Get the x's on one side and the integers on the other

3x + 3x = 25 + 17

6x = 42

x = 7

5 0

4 years ago

A waterfall has a height of 900 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet pe

aliya0001 [1]

Answer:

The pebble will hit the ground 8.29 second after it is thrown.

Step-by-step explanation:

Given that,

The height of the pebble after t seconds is given by the equation

h= -16t²+24 t+900.

When the pebble hit the ground, the height of the pebble will be zero.

So putting h=0 in the given equation.

0 = -16t²+24 t+900

⇒-4(4t²-6t-225)=0

⇒4t²-6t-225=0

Applying quadratic formula $t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ , here a=4, b= -6 and c= -225.

$\therefore t=\frac{-(-6)\pm\sqrt{(-6)^2-4.4.(-225)}}{2.4}$

⇒ t = 8.29, -6.79

Since time can not negative.

∴t=8.29 seconds.

The pebble will hit the ground 8.29 second after it is thrown.

7 0

3 years ago