The drawing below shows circle B and circle E. The MAC = m DF, and the length of AC is 3 times the length of DF.

Answers

Answer 1

Answer:

Answer:

I believe the answer would be BC=3(EF)

Step-by-step explanation:

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Solve this system of linear equations. Separatthe x- and y-values with a comma.
9x - 10y = -34
3x - 4y = -16

Answers

Answer:

$9x - 10y = - 34 - - - (a) \n 3x - 4y = - 16 - - - (b) \n (a) - 3 * (b) : \n 0x + 2y = 14 \n y = 7 \n 3x - (4 * 7) = - 16 \n 3x = 12 \n x = 4$

answer:( 4, 7 )

Hi there!

»»————-　★　————-««

I believe your answer is:

(4,7)

»»————-　★　————-««

Here’s why:

I have graphed the system on a program.
The two lines intercept at the point (4,7). This means that it is the solution to the system.
See the graph attached.

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

A : undefined
B: Zero
C: Positive
D:Negative

Answers

Answer:

Undefined

Step-by-step explanation:

There really is no explanation. All vertical lines have an undefined slope.

undefined! I hope this helps and good luck!

18% of the cars in the parking lot are blue.If there are 150 cars in the parking lot,how many cars are blue

Answers

Answer:

Step-by-step explanation:

Convert to fractions and write in simplest form.A) 0.02
B) 12%
C) 0.5%
D) 1.12

Answers

Answer:

Given below.

Explanation:

A) 0.02 = $(2)/(100)$ = $(1)/(50)$

B) 12% = $(12)/(100)$ = $(6)/(50)$ = $(3)/(25)$

C) 0.5% = $(0.5)/(100)$ = $(1)/(200)$

D) 1.12 = $(28)/(25)$

Which expression is the greatest common factor of the two addends in 18x + 30x2?

Answers

Answer:

The answer is 6x

Step-by-step explanation:

I think common factors are

18 = 1 2 3 6 9 18

30 = 1 2 3 10 15 30

So highest common factor is 3

18x + 30x2

3x (6 + 10x)

Data on caloric intake or teens for two types of diet are given below. Typical Diet Caloric intake Sample mean St. Dev.
No fast food 2310 2295 2280 2340 2235 2265 2315 2291.429 34.8466
food Fast 2579 2160 2165 2580 2558 2591 2614 2518 2583.125 33.0646

Give a 95% confidence interval for the difference of the two means, (Uf - Un), where is the mean calorie intake for teens who typically eat fast food and is that for teens who do not typically eat fast food assuming two normal populations, independent random samples, and equal variances for the two populations

Answers

Answer:

Step-by-step explanation:

For "no fast food,

n1 = 9

Mean = (2310 + 2295 + 2280 + 2340 + 2235 + 2265 + 2315 + 2291.429 + 34.8466)/9

Mean, m1 = 2041

Standard deviation, s1 = √summation(x - u)²/n

summation(x - u)² =

(2310 - 2041)^2 + (2295 - 2041)^2 + (2280 - 2041)^2 + (2340 - 2041)^2 + (2235 - 2041)^2 + (2265 - 2041)^2 + (2315 - 2041)^2 + (2291.429 - 2041)^2 + (34.8466 - 2041)^2

= 4533653.14837256

s = √4533653.14837256/9

s = 709.75

For " fast food",

n2 = 10

Mean = (2579 + 2160 + 2165 + 2580 + 2558 + 2591 + 2614 + 2518 2583.125 + 33.0646)/10

Mean,m2 = 2238

summation(x - u)² =

(2579 - 2238)^2 + (2160 - 2238)^2 + (2165 - 2238)^2 + (2580 - 2238)^2 + (2558 - 2238)^2 + (2591 - 2238)^2 + (2614 - 2238)^2 + (2518 - 2238)^2 + (2583.125 - 2238)^2 + (33.0646 - 2238)^2

= 5672294.38379816

s2 = √5672294.38379816/10

s2 = 753.15

For a confidence interval of 95%, z = 1.96

The formula for confidence interval is

m1 - m2 ± z × √(s1²/n1 + s2²/n2)

= 2041 - 2238 ± 1.96 × √(709.75²/9 + 753.15²/10)

= - 197 ± 1.96 × √(55971.6736 + 56723.4923)

= - 197 ± 1.96 × 335.7

= - 197 ± 657.972

The lower end of the interval is

- 197 - 657.972 = - 854.972