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3 years ago

Estimate 91 +94 by first rounding each number to the nearest ten.

Mathematics

2 answers:

Virty [35]3 years ago

6 0

Answer:

about 180

Step-by-step explanation:

(when rounding, numbers 0-4 "stay" meaning you'd round down. If the numbers are 5-9, you round up)

91 rounded to the nearest ten would be 90

94 rounded to the nearest ten would be 90 as well

So, 90 + 90 = 180

Technically though, 91+94 = 185. So rounding this to the nearest ten would be 190.

Do what you will :)

abruzzese [7]3 years ago

3 0

91 +94. 91 is rounded to 90 and 94 is rounded to 90.
90+90=180

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Graph f(x)=3x+5 and g(x)=3x-2

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Answer:

Two parallel lines

Step-by-step explanation:

the slopes are the same: slope = 3

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Pick at least three x values and find their corresponding values for y. Remember the f(x) and g(x) represent y

f(x) = 3x + 5 g(x) = 3x - 2

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2 years ago

Given AB is tangent to circle C at point B, what is the circumference of circle C?

faltersainse [42]

Given:

Given that AB is a tangent to circle C.

The length of AB is (2r -1)

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The length of BC is r.

We need to determine the circumference of the circle C.

Value of r:

The value of r can be determined using the Pythagorean theorem.

Thus, we have;

$AC^2=AB^2+BC^2$

Substituting the values, we have;

$[(r+1)+r]^2=(2r-1)^2+r^2$

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$(2r+1)^2=(2r-1)^2+r^2$

Expanding the terms, we get;

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Simplifying the values, we have;

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Adding both sides of the equation by 4r, we get;

$8r=r^2$

$0=r^2-8r$

$0=r(r-8)$

Thus, $r=0 \ or \ r=8$

Since, the radius of the circle cannot be 0.

Hence, the radius of the circle is 8.

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The circumference of the circle can be determined using the formula,

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3 years ago

HELP! will give brainliest if given right answers

disa [49]

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