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3 years ago

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Mathematics

1 answer:

Artyom0805 [142]3 years ago

3 0

Answer:

estimated 260 seventh graders use computer 5 to 10 hours a week and 300 seventh graders for 10 hours or less a week

Step-by-step explanation:

260 out of 300

300 our of 360

these numbers because it's an estimate it's what you think there is no correct answer just an estimation

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HELP ME PLEASE……..50 pointssss

svlad2 [7]

Answer:

Step-by-step explanation:

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3 years ago

Which of the following numbers is not in the solution to the inequality

ohaa [14]

The answer you are looking for is B

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2 years ago

Mark has $175 to spend on school clothes. He buys 4 shirts for $24 each, 2 pairs of shorts for $18 each, and 2 pairs of pants fo

Sloan [31]

Answer:

$7.7

Step-by-step explanation:

Step one:

given data

total money = $175

He buys 4 shirts for $24 each= 24*4= $96

The shirts are discounted 20%

= 96- 0.2*96= 96-19.2= $76.8

2 pairs of shorts for $18 each= $36

2 pairs of pants for $22.50 each= $45

Total cost = $157.8

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=157.8+9.468

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The balance is

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3 0

3 years ago

How can the Pythagorean Identity be used to find sin θ, cos θ, or tan θ and the quadrant location of the angle?

Archy [21]

First lets see the pythagorean identities

$sin^2 \Theta + cos^2 \Theta =1$

So if we have to solve for sin theta , first we move cos theta to left side and then take square root to both sides, that is

$sin^2 \Theta = 1-cos^2 \Theta => sin \theta = \pm \sqrt{1-cos^2 \Theta}$

Now we need to check the sign of sin theta

First we have to remember the sign of sin, cos , tan in the quadrants. In first quadrant , all are positive. In second quadrant, only sin and cosine are positive. In third quadrant , only tan and cot are positive and in the last quadrant , only cos and sec are positive.

So if theta is in second quadrant, then we have to positive sign but if theta is in third or fourth quadrant, then we have to use negative sign .

5 0

3 years ago

Quadrilateral ABCD is inscribed in this circle.

Svetllana [295]

Answer:

132°

Step-by-step explanation:

Quadrilateral ABCD is inscribed in a circle,

So, it is a cyclic quadrilateral.

Opposite angles of a cyclic quadrilateral are supplementary.

$\implies \: x \degree + (3x - 12) \degree = 180 \degree \\ \\ \implies \: (4x - 12) \degree = 180 \degree \\ \\ \implies \: 4x - 12 = 180 \\ \\ \implies \: 4x = 180 + 12 \\ \\ \implies \: 4x = 192 \\ \\ \implies \: x = \frac{192}{4} \\ \\ \implies \: x = 48\\\\$

(3x-12)° = (3*48 - 12)° = (144 - 12)° = 132°

$\implies \: m\angle B = 132\degree\\\\$

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3 years ago