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Slav-nsk [51]
2 years ago
7

Help me solve this problem please

Mathematics
2 answers:
svetoff [14.1K]2 years ago
4 0

Answer:

-2

Step-by-step explanation:

I dont have an explanation, sorry

nekit [7.7K]2 years ago
3 0

Answer:

-2

Step-by-step explanation:

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Given: AC bisects angle BCD , Angle ABC is congruent to angle ADC prove AB is congruent to AD. Help immediately
weeeeeb [17]

<em>AC bisects ∠BAD, => ∠BAC=∠CAD ..... (1)</em>

<em>thus in ΔABC and ΔADC,    ∠ABC=∠ADC (given), </em>

<em>                                       ∠BAC=∠CAD      [from (1)],</em>

<em>AC (opposite side side of ∠ABC) = AC (opposite side side of ∠ADC), the common side between ΔABC and ΔADC</em>

<em>Hence,      by AAS axiom, ΔABC ≅ ΔADC,</em>

<em>Therefore,  BC (opposite side side of ∠BAC) = DC (opposite side side of ∠CAD),  since (1)</em>

<em />

Hence, BC=DC proved.

7 0
3 years ago
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Simplify the expression 14 + 5(x+3)-7
Alenkasestr [34]
14 + 5(x+3)-7
14 + 5x +15 -7
5x + 22
8 0
3 years ago
10) Thirty-seven percent of the American population has blood type O+. What is the probability that at least four of the next fi
lisabon 2012 [21]

Answer:

0.06597

Step-by-step explanation:

Given that thirty-seven percent of the American population has blood type O+

Five Americans are tested for blood group.

Assuming these five Americans are not related, we can say that each person is independent of the other to have O+ blood group.

Also probability of any one having this blood group = p = 0.37

So X no of Americans out of five who were having this blood group is binomial with p =0.37 and n =5

Required probability

=The probability that at least four of the next five Americans tested will have blood type O+

= P(X\geq 4)\\= P(X=4)+P(x=5)\\= 5C4 (0.37)^4 (1-0.37) + 5C5 (0.37)^5\\= 0.06597

7 0
3 years ago
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There are 3 cups of blue paint and 2 cups of red paint. Whats the ratio?
steposvetlana [31]

Answer:

3:2

Step-by-step explanation:

can also be written as 3/2 as a fraction!

7 0
3 years ago
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If AC = 20 centimeters, and BC = 16 centimeters, which does AB equal?
Anna11 [10]

Answer:

The answer is B. 12 cm

Step-by-step explanation:

ABC is a right triangle

AB and BC are the legs and AC is the hypotenuse.

The Pythagorean theorem a^2 + b^2 = c^2 can be manipulated to solve for a and get 12.

8 0
3 years ago
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