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3 years ago

Need help on this please? not sure how to do this

Mathematics

1 answer:

igomit [66]3 years ago

4 0

1. The formula for circumference is 2πr. From that formula you can see that anything you do to the radius (in terms of multiplying), you do to the circumference in the same way. Double the radius, you double the circumference, triple the radius, you triple the circumference. This is because the 'r' is in the formula without any exponent.

2. The formula for the area is πr². This is different. Now if you double the radius (multiply it by 2), the area is multiplied by 2², so by 4. The power of 2 in the formula works on the multiplication factor you apply. If you make the radius p times as big, the area becomes p² times as big.

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Which function has real zeros at x = −10 and x = −6?

ivann1987 [24]

Answer:

Option (a) is correct.

$f(x)=x^2+16x+60$

Step-by-step explanation:

Given :A function has real zeros at x = −10 and x = −6 .

We have to find the function that has real zeros at x = −10 and x = −6.

Consider real zeros at x = −10 and x = −6.

x = - 10 ⇒ x + 10 = 0

x = - 6 ⇒ x + 6 = 0

Multiply both zeroes, we have,

$(x+10)(x+6)$

Apply Distributive rule,

$(a+b)(c+d)=ac+ad+bc+bd$

we have,

$(x+10)(x+6)=x^2+10x+6x+60$

Simplify, we have,

$(x+10)(x+6)=x^2+16x+60$

Thus, $f(x)=x^2+16x+60$

Option (a) is correct.

6 0

4 years ago

Read 2 more answers

What is the volume of a cube with

Anni [7]

Answer:

Step-by-step explanation:

volume - side x side

2 x 2 - 4

3 0

3 years ago

Complete the inequality statement with the symbol that makes it true.<br> 28.005_28.05

Veronika [31]

Answer:

Step-by-step explanation:

5/1000 is a smaller value than 5/100

3 0

3 years ago

In PQR, Q = 76, PQ = 18, and QR = 27<br> Can you help me with 5!

SashulF [63]

Answer:

The answer is

m<p =66°21'14"

m<R =37°38'46"

PR =28,6

Step-by-step explanation:

${pr}^{2} = {18}^{2} + {27}^{2} - 2 \times 18 \times 27 \cos(76) = 817.85 \\ pr = 28.6 \\ \cos(p) = \frac{ {18}^{2} + {28.6}^{2} - { {27}^{2} } }{2 \times 18 \times 28.6 } = 0.4 \\ m < p = 66.42 \\ m < r = 180 - 76 - 66.42 = 37.58$

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3 years ago

The ratio of broken ribs to broken collarbones

V125BC [204]

It’s 27 I’m pretty sure

Because 18 divided by 2 gives you 9, then you would add the 9 onto the 18

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2 years ago