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Sloan [31]
3 years ago
7

I need help with this question

Mathematics
1 answer:
AVprozaik [17]3 years ago
5 0

Step-by-step explanation:

Angle formed at the circumference of the circle is half of the angle formed at the center of the same circle.

Hence,

m\angle ADC =  \frac{1}{2} \times  m\angle ABC \\  \\  \therefore \: m\angle ADC =  \frac{1}{2} \times  40 \degree \\  \\ \therefore \:m\angle ADC =  20 \degree  \\  \\

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Kazeer [188]

Answer:-3

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5 0
3 years ago
Keelie has a triangular-shaped card. The lengths of its sides are 5.1 cm, 6.8 cm, and 8.5 cm. Is the card a right triangle?
anastassius [24]

Answer:

Yes

Step-by-step explanation:

To figure out if a triangle is a right triangle, you have to plug in the side lengths into the equation a^{2} + b^{2} = c^{2}

Your equation should look like 5.1^{2}  + 6.8^{2}  = 8.5^{2}

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8 0
3 years ago
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The expression below is equal to -20c plus a constant term. -8(2.5c-4.25)+5.25. What is the value of the constant term?
Inessa05 [86]

Answer:

<h2>39.25</h2>

Step-by-step explanation:

Given the expression -8(2.5c-4.25)+5.25. On expansion;

= -8(2.5c-4.25)+5.25\\= -20c+34 +5.25\\= -20c + 39.25.

The resulting expressing after expanding is -20c + 39.25. The constant value in the expression is the value that has no variable 'c' attached. The value of the constant term is therefore 39.25

8 0
3 years ago
Look at the photo for the question
vesna_86 [32]

Answer:

A: Y<1/2x+2

Step-by-step explanation:

The shaded area is under the line, which indicates that Y is less than or equal to. The +2 in the inequality tells you where the y-intercept is (where the line goes through the y-axis). The 1/2 in the inequality tells the slope of the line (up 1, over 2) thus 1/2. So the answer is A

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3 years ago
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