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4 years ago

Given: If a parallelogram has 4 congruent sides, then it is a rhombus.

Mathematics

2 answers:

makkiz [27]4 years ago

4 0

B) ABCD is a rhombus as all the sides are congruent (equal)

Kipish [7]4 years ago

4 0

Answer:

Step-by-step explanation:

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If a/2 = b/3, then b/a = ?<br><br> A. 3/2<br><br> B. 2/3

Paul [167]

It would be A because b+a

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3 years ago

A survey of 100 doctors revealed that 2 out of every 5 doctors recommended Brand M deodorant. Based on these results, how many d

AURORKA [14]

Answer:

Ok well it’s obviously not 140 Bc that’s more Doctors than they had to start and it isn’t 20, it’s not 40, so it’s 60.

Step-by-step explanation:

Also if you do 100/5 you get 20 and 5-2 is 3 so 20 times 3 is 60 so yeah

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3 years ago

A+3a-4(9-a) what is the answer please

Juli2301 [7.4K]

Step-by-step explanation:

=3a+a-36+4a

=4a+4a-36

=8a-36

=4(2a-9)

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3 years ago

Read 2 more answers

Line segment JL is an altitude in triangle JKM. Which statement explains whether JKM is a right triangle? Round measures to the

natulia [17]

Answer:

C. JKM is not a right triangle because KM ≠ 15.3.

Step-by-step explanation:

We can see from our diagram that triangle JKM is divided into right triangles JLM and JLK.

In order to triangle JKM be a right triangle $KM^{2}=JK^{2}+JM^{2}$ .

We will find length of side KM using our right triangles JLM and JLK as $KM=KL+LM$ .

Using Pythagorean theorem in triangle JLM we will get,

$LM=\sqrt{JM^{2}-JL^{2}}$

$LM=\sqrt{8^{2}-5^{2}}$

$LM=\sqrt{64-25}$

$LM=\sqrt{39}=6.244997998\approx 6.24$

Now let us find length of side KL.

$KL=\sqrt{JK^{2}-JL^{2}}$

$KL=\sqrt{13^{2}-5^{2}}$

$KL=\sqrt{169-25}$

$KL=\sqrt{144}=12$

Now let us find length of KM by adding lengths of KL and LM.

$KM=12+6.24=18.24$

Now let us find whether JKM is right triangle or not using Pythagorean theorem.

$KM^{2}=JK^{2}+JM^{2}$

$18.24^{2}=13^{2}+8^{2}$

$18.24^{2}=169+64$

$18.24^{2}=233$

Upon taking square root of both sides of equation we will get,

$18.24\neq 15.264337522473748$

$18.2\neq 15.3$

We have seen that KM equals 18.2 and in order to JKM be a right triangle KM must be equal to 15.3, therefore, JKM is not a right triangle and option C is the correct choice.

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3 years ago

Read 2 more answers

It is a well known fact that talking on a cell phone impairs a driver more than talking to a person sitting in the passenger sea

sergey [27]

Answer:

The statistical test to use in comparing the number or words spoken for people with and without licenses is independent sample t test.

Step-by-step explanation:

The sample test to use is an Independent Samples t Test. The reason for using this statistical test is because it takes two independent groups; calculates and compares the means of these groups so as to determine if statistical evidence exists such that the associated population means are significantly different.

In this case, there are two groups of passengers (40, in total);

Group 1 are those who have driving licence while group 2 are those who do not.

Depending on the response from these two groups, the independent sample t test calculates the mean and compares the number or words spoken for people with and without licenses to know passengers experience.

3 0

3 years ago