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charle [14.2K]
2 years ago
12

circle A has a center of (2,3) and a radius of 5 and circle B has a center of (1,4) and a radius of 10. What steps will help sho

w that circle A is similar to circle B
Mathematics
1 answer:
Rzqust [24]2 years ago
4 0

Answer:

12

Step-by-step explanation:

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PLEASE HELP!! URGANT!!
tigry1 [53]

Answer:

55

Step-by-step explanation:

CBZ+ZBA=CBA

x=6

9(6)+1=55

6 0
2 years ago
(11x + 8) + (8x + 12) =27
Tju [1.3M]

Answer:

11x + 8 +8x +12 =27  (drop the parenthesis, there's no actual need for them)

19x +20 =27 (i combined like terms and then subtracted 20 from both sides)

19x = 7  (divide both sides by 19 to get x alone)

x= 7/19 or 0.36842105 (the answer)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A consumer survey indicates that the average household spendsμ= $185on groceries each week. The distribution of spending amounts
Vitek1552 [10]

Answer:

P(X>200)=P(\frac{X-\mu}{\sigma}>\frac{200-\mu}{\sigma})=P(Z>\frac{200-185}{25})=P(Z>0.6)

And we can find this probability using the complement rule and with the normal standard table or excel:

P(Z>0.6)=1-P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the average household spent of a population, and for this case we know the distribution for X is given by:

X \sim N(185,25)  

Where \mu=185 and \sigma=25

We are interested on this probability

P(X>200)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>200)=P(\frac{X-\mu}{\sigma}>\frac{200-\mu}{\sigma})=P(Z>\frac{200-185}{25})=P(Z>0.6)

And we can find this probability using the complement rule and with the normal standard table or excel:

P(Z>0.6)=1-P(z

7 0
3 years ago
Solve for w. 9 + 7w - 9 = 5w – 10 =​
777dan777 [17]

Answer:

w = -5

Step-by-step explanation:

Hello there!

9+7w-9=5w-10

Add 9 and -9 since we can add those

7w=5w-10

Use subtraction Prop of Equality (combining/simplifying like terms)

2w = -10

Now isolate the w by dividing 2w by 2 and use the division prop of equality

w = -5

Hope this helps. Feel free to comment for further explanation.

8 0
2 years ago
Find the value of the variables in each diagram below
alexdok [17]

Answer:

x = 9

y = 4

Step-by-step explanation:

Substitution! View images attached ^^

6 0
2 years ago
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