1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
il63 [147K]
3 years ago
14

A section of a roller coaster track forms a parallelogram ABCD. If m∠ABC = 72°, what is m∠DAB? A) 72° B) 108° C) 144° D) 216°

Mathematics
2 answers:
Valentin [98]3 years ago
8 0
Check the picture below.

Leno4ka [110]3 years ago
7 0

Answer: Option 'B' is correct.

Step-by-step explanation:

Since we have given that

A section of a roller coaster track forms a parallelogram ABCD.

If m∠ABC = 72°

We need to find the  m∠DAB,

Since ABCD is a parallelogram .

So, "Sum of interior angles on the same side is supplementary":

m\angle ABC+m\angle DAB=180\textdegree\\\\72\textdegree+m\angle DAB=180\textdegree\\\\m\angle DAB=180\textdegree-72\textdegree\\\\m\angle DAB=108\textdegree

Hence, Option 'B' is correct.

You might be interested in
Explain how to construct a perpendicular bisector. <br><br> ?
inysia [295]
Open the compass it is more than half of the distance between a and b, and scribes arcs of the same radius centered at a and b. call the two points where these two arcs meet c and d. Draw the line between c and d. CD it is the perpendicular bisector of the line segment AB. call the point where CD intersects AB and E
8 0
3 years ago
Read 2 more answers
If f(x)=4x+9+2, which inequality can be used to find the domain of f(x
Ksju [112]
First off, the function above is incomplete, however, by the looks of it, likely a quadratic, anyway, the values "x" can safely take on would be all real numbers, thus  -∞ < x < +∞
3 0
3 years ago
Cam has 32 dollars. How many roses can he afford to buy?
Vlad [161]

Answer:

8 roses

Step-by-step explanation:

roses cost about 4 dollars, and 8 times 4=32

6 0
3 years ago
Assume that different groups of couples use the XSORT method of gender selection and each couple gives birth to one baby. The XS
olganol [36]

Answer:

Mean and Standard deviation for the numbers of girls in groups of 36 births are 18 and 3 respectively.

Step-by-step explanation:

We are given that he X SORT method is designed to increase the likelihood that a baby will be a girl, but assume that the method has no effect, so the probability of a girl is 0.5.

Now consider a group consisting of 36 couples.

The above situation can be represented through binomial distribution;

P(X=r)=\binom{n}{r} \times p^{r} \times (1-p)^{n-r} ;x=0,1,2,3,.....

where, n = number of trials (samples) taken = 36 couples

            r = number of success

            p = probability of success which in our question is probability

                   of a girl, i.e.; p = 0.5

<em><u>Let X = Numbers of girls in groups of 36 births </u></em>

So, X ~ Binom(n = 36, p = 0.5)

Now, mean for the numbers of girls in groups of 36 births is given by;

         <u>Mean</u>, E(X) = n \times p = 36 \times 0.5 = 18

Also, standard deviation for the numbers of girls in groups of 36 births is given by;

        <u>Standard deviation</u>, S.D.(X) =  \sqrt{n\times p\times (1-p)}

                                                      =  \sqrt{36\times 0.5\times (1-0.5)}

                                                      =  3

3 0
3 years ago
Determine the value of each expression.<br> i11=
Basile [38]

Answer:

11 * I

Unless you can tell me what I is equal to, I can't give you a number as an answer. Just take what ever I is equal to, an multiply it by 11. If the answer choices are equations rather than numbers, than just say 11 * 1.

If the question comes with any more information, please comment so I can give you a stronger answer.

Hope this helps! :)

              -Sophia

7 0
3 years ago
Other questions:
  • Write an exponential function in the form y = ab that goes through points (0,4)<br> and (2, 196).
    12·1 answer
  • A dress needs 3 1/4 yards of fabric to make. If the matching jacket requires 5/6 less yards of fabric. How much fabric is needed
    6·1 answer
  • What is the answer to this question 3x+7=4x
    12·2 answers
  • Which of these inferences about the two debate teams are true? Check all that apply.
    5·2 answers
  • Help please!!!! I’ll give brainilest
    5·2 answers
  • Given sin=300° , determine which of the following is an equivalent expression.
    15·1 answer
  • a shopkeeper had 60 kg apples with him in the morning of a particular day during the day time he could sell only 43 kg 700 gram.
    14·1 answer
  • A rectangular prism is made of 81 unit cubes. The prism is 9 unit cubes long.
    12·1 answer
  • S = R-rR solve for R
    6·2 answers
  • The first day of August in the first day of July combined account for 75% of the sales on the first day of the month from July t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!