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3 years ago

What is the length of AB

Mathematics

2 answers:

Elena-2011 [213]3 years ago

8 0

Answer:

D. 12

Step-by-step explanation:

<A = <C = 50. It's isosceles triangle

So AB = BC

Plug in

4x = 2x + 6

2x = 6

x = 3

AB = 4 (3) = 12

sladkih [1.3K]3 years ago

8 0

Answer:

The answer is D with 12.

Step-by-step explanation:

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Serggg [28]

The surface area increases by a factor of 4. 2^2= 4.
The area of the long side is 3×1= 3cm^2 on the small prism.
The area of the long side is 6×2= 12cm^2 on the large prism.
12/3= 4.

7 0

3 years ago

Hypotheses: p=.5 vs p NE .5 ; Sample data: p=28/40= .70 with n=40 Round the p-value to three decimal places.

jeka57 [31]

Answer:

hahahahahaha yes hnjoo

7 0

3 years ago

Explain how to solve 3^x-4=6 using the change of base formula log base b of y equals log y over log b. include the solution for

Alexxandr [17]

Answer:

x = log 10/log 3

Step-by-step explanation:

3^x - 4 = 6

3^x = 10

We take log base 3 of both sides since log_3 3^x is simply x.

log_3 3^x = log_3 10

x = log_3 10

We have an answer for x, but it is a log base 3. We want log base 10.

Now we use the change of base formula.

log_b y = log y/log b

x = log 10/log 3

7 0

3 years ago

An urn contains 12 balls, of which 4 are white.

wel

Answer:

a) $\frac{1}{3}$

b) $\frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...$

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let $A_i\,,\,B_i\,,\,C_i$ denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: $P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}$

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: $P(A_1)=\frac{4}{12}=\frac{1}{3}$

If A lost and B wins: $P\left ( B_1|A_1^{c} \right )=\frac{4}{11}$

If A and B lost and C wins: $P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}$

and so on....

4 0

4 years ago

Find the slope of the line in the graph.<br>SAVE ME!! THIS IS DUE IN LIKE 2 MINUTES

3241004551 [841]

Answer: m = -1

Step-by-step explanation:

m = slope

The slope is 1/-1 which is just -1.

Hope this helps!

8 0

3 years ago

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