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kykrilka [37]
2 years ago
6

Katherine baked a round cake that is 9 inches in diameter. She wants to decorate the cake by putting a piece of ribbon around th

e bottom. About how long does the ribbon need to be to wrap around the cake?
Mathematics
2 answers:
kaheart [24]2 years ago
5 0

Answer:

28.26 inches long of ribbon

avanturin [10]2 years ago
5 0

Answer:

5

Step-by-step explanation:

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The greatest common factor of two numbers is 4. The sum of the numbers is 76. What are the two numbers? A. 38 and 38 B. 12 and 6
Rashid [163]

Answer: B. 12 and 64

Step-by-step explanation:

Option A is incorrect because the highest common factor for both numbers would be 38 not 4.

Option B:

Factors of 12 are: 1, 2 , 3, 4, 6, 12

Factors of 64 are: 1, 2, 4, 8, 16, 32 and 64.

<em>Highest factor of both is 4 and they both add up to 76 so option B must be correct. </em>

5 0
2 years ago
Explain whether or not the plant labeled p(x)=x2+x+3 has any rational or irrational roots.
olasank [31]

frational roots are those numbers that can be written in form \frac{a}{b} where a and b are integers (integers are like -5,-4,-3,-2,-1,0,1,2,3,4, etc)

some examples are 1=1/1, 2=2/2, -4=-4/1, 4/3, 0.111111111111=1/9, etc

irrational numbers are numbers that can't be written that way like pi

numbers that involve √-1 or a square root of any negative number are called complex numbers and are neither rational nor irrational.


roots are the values of x that makes the function equal to 0


p(x)=x^2+x+3

set equal to 0

0=x^2+x+3

I can't factor so use quadratic formula

for 0=ax^2+bx+c

x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

so

x=\frac{-1 \pm \sqrt{1^2-4(1)(3)}}{2(1)}

x=\frac{-1 \pm \sqrt{-11}}{2}

√-11 is a square root of a negative number so it is a complex number. therefore, the function does not have rational or irrational roots


p(x) has no rational or irrational roots

5 0
2 years ago
(-12)÷6+2 pls help math is hard for me
SVEN [57.7K]

The Answer is -3/2

Below is how I got that answer

(-12) / 6+2

-12/ 8  (Simplify the problem by adding 6 and 2, remove the parenthesis).

-3/2 (Simplify -12/8 by dividing it by 4)

4 0
2 years ago
I need help with this question !
lidiya [134]

Answer:

3x -2 ≤ 2x +1

3x ≤ 2x +3

x ≤ 3

so its {x|x∈ℝ, x ≤ 3}

7 0
2 years ago
Read 2 more answers
Write a statement that why isn't 6.5 / 0.5 = 3.25
maxonik [38]

Step-by-step explanation:

6.5 / 0.5

= 6.5 / (1/2)

= 6.5 * (2/1)

= 13.

Since 13 is unequal to 3.25,

we conclude 6.5 / 0.5 = 3.25 is false.

7 0
2 years ago
Read 2 more answers
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