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3 years ago

I did some of it already I just need help on the last one unless I got the others wrong

Mathematics

2 answers:

Naya [18.7K]3 years ago

8 0

Answer:

17.5 km

Step-by-step explanation:

5 km per hour so for 3 hours it would be 15 then 2.5 km for half an hour gives a total of 17.5 km walked in 3 1/2 hours

Vilka [71]3 years ago

4 0

Answer:17.5

Step-by-step explanation:

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Choose True or False for each statement.

Margaret [11]

Answer:

1. True

2. False

3. False

4. True

Step-by-step explanation:

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3 years ago

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In circle A below, points B, C, and D lie on the circle, and mZBDC = 35".

elena-14-01-66 [18.8K]

Answer:

arcBC = 140degrees

Step-by-step explanation:

From the given digaram;

Angle at the center is twice angle at the circumference

Hence;

m<CAB = 2(m<CDB)

m<CAB = 2 * 35

m<CAB = 70degrees

Also;

m<CAB = 1/2 arcBC

70 = 1/2arcBC

arcBC = 70*2

arcBC = 140degrees

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3 years ago

What is the value of the expression? a) 6 b) 16 c) 8 d) 10

Vladimir79 [104]

The answer for the expression is C.

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3 years ago

If the tangent of an acute angle is 1/4, what is the cosine of that angle?

ozzi

Answer:

0.97

Step-by-step explanation:

It is known that the tangent of an angle is given by the quotient between its sine and its cosine.

$tan(x)=\frac{sin(x)}{cos(x)} =\frac{1}{4} \\\frac{1}{4}cos(x)=sin(x)\\$

Applying the following property:

$sin^2(x) +cos^2(x) = 1\\(\frac{1}{4}cos(x))^2 +cos^2(x) = 1\\\\\frac{17}{16}cos^2(x) = 1 \\cos(x)=0.97$

The cosine of that angle is 0.97.

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3 years ago

Brandon has an action figure collection. He keeps 178 of the action figures on his wall, which is 89% of his entire collection.

RSB [31]

Answer:

200 total action figures

Step-by-step explanation:

178 * 100 / 89 = 200

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3 years ago

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