Class 10 triangles
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Class 10 triangles Please no scam answers - 1

Answers

Answer 1
Answer:

Answer:

PQR reduction of ABC in the ratio 16/24=2/3

PR =x = AC*2/3 = 30*2/3=20

QR = y= BC*2/3 = 9*2/3=6

Step-by-step explanation:

Answer 2
Answer:

Answer:

x=20cm

y=6cm

Step-by-step explanation:

We are told ΔABC and ΔPQr are similar. This means their corresponding sides are in ratios to one another.

That means the ratio of AB to PQ, is equal to the ratio of AC to PR, is equal to the ratio of BC to QR. Written mathematically, this is:

(AB)/(PQ) =(AC)/(PR) =(BC)/(QR)

Find x/PR

Since we know the values of AB, PQ, and AC, we can use (AB)/(PQ) =(AC)/(PR) to find PR (x):

(AB)/(PQ) =(AC)/(PR)

(24)/(16) =(30)/(x)

1.5= (30)/(x)

1.5x=30

x=20

Find y/QR

Since we know the values of AB, PQ, and BC, we can use (AB)/(PQ) =(BC)/(QR) to find QR (y):

(AB)/(PQ) =(BC)/(QR)

(24)/(16) =(9)/(y)

1.5= (9)/(y)

1.5y=0

y=6


Related Questions

Identify the domain for the following ordered pairs: (3, 5) (-2, 4) (5, 5) (-1, 1).A. (5, 4, 5, 1) B. (-5, -4, -5, -1) C. (3, -2, 5, -1) D. (-3, 2, -5, 1)
Find n. 24/48= 3/n n=_____
Help me to do this question ​
Write an equivalent expression for 12^3 • 12^9 • 12^4 • 12^2
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Equation of perpendicular line:

Equation of parallel line:

Answers

1)Parallel means they have to have the same slope. Since our equation is y=2/3x+1, a line parallel to that would be(using out points) -5=2/3(-4)+b.

To find the y-intercept, solve for "b".

b=-7/3

Our equation would then be y=2/3x-7/3

2)Perpendicular lines have opposite-reciprocal slopes. our previous equation was y=2/3x+1, so our new equation would be -5=-3/2(-4)+b. Now lets solve for b.

b=-11

So our perpendicular equation would be y=-3/2x-11

Hope that was helpful. :)

Answer:

1)Parallel means they have to have the same slope. Since our equation is y=2/3x+1, a line parallel to that would be(using out points) -5=2/3(-4)+b.

To find the y-intercept, solve for "b".

b=-7/3

Our equation would then be y=2/3x-7/3

2)Perpendicular lines have opposite-reciprocal slopes. our previous equation was y=2/3x+1, so our new equation would be -5=-3/2(-4)+b. Now lets solve for b.

b=-11

So our perpendicular equation would be y=-3/2x-11

Step-by-step explanation:

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Identify which type of sampling is​ used: random,​ systematic, convenience,​ stratified, or cluster. To determine customer opinion of their pricing​, Greyhound Lines randomly selects 120 busses during a certain week and surveys all passengers on the busses.

Answers

Answer: Cluster Sampling

Step-by-step explanation:

In cluster sampling, researcher divides the population into groups ,which are called clusters. Then random sample of clusters are chosen ,and researcher conduct study to collect data about the population.

Here each bus is considered a cluster ,because busses are selected at random ,this sampling would be an example of cluster type of sampling.

When you round 6 5/11 what's the nearest whole number

Answers

6.

5 is less than half of eleven, so 6 5/11 would round down to 6.
If its easier you could multiply it by 2 to make it a larger #, which is 10/22, which means that the # would be rounded down, and stay as 6, hope I was helpful

Luca is planning to pay the restaurant bill for his coworkers. The bill was $193.75. A 4% tax was then added by the waiter. If Luca wants to leave a 16% tip on the total amount including the tax, how much should Luca pay? A)$201.50
b)$217.50
c)$224.75
d)$233.74

Answers

The amount of bill before tax = $193.75
Percentage of tax added by the waiter = 4%
Amount of tax added by the waiter = (4/100) * 193.75 dollars
                                                        = 775/100 dollars
                                                        = 7.75 dollars
Total bill after tax = (193.75 + 7.75) dollars
                            = 201.50 dollars
Percentage of tips that Luca wants to give = 16%
Amount of tips that Luca wants to give = (16/100) * 201.50 dollars
                                                              = 32,24 dollars
The total amount that Luca needs to pay = (201.50 + 32.24) dollars
                                                                 = 233.74 dollars
The correct option among all the options that are given in the question is option "d".

the answer is B. $233.74 i got it right on the test

If the half-life of a unstable isotope is 10,00 years and only 1/8 of the radioactive parent remains how old is the sample? A.10,000 B. 20,000 C. 30,000 D. 40,000

Answers

Answer:

C. 30,000

Step-by-step explanation:

We know that, the exponential function for decay is,

y=ae^(rt)

where,

y = the amount after time t,

a = initial amount,

r = rate of decay.

The half-life of a unstable isotope is 10,000 years, so

\Rightarrow (1)/(2)=1\cdot e^(r\cdot 10000)

\Rightarrow (1)/(2)=e^(r\cdot 10000)

\Rightarrow \ln (1)/(2)=\ln e^(r\cdot 10000)

\Rightarrow -\ln 2={r\cdot 10000}\cdot \ln e

\Rightarrow -\ln 2={r\cdot 10000}\cdot 1

\Rightarrow r=(-\ln 2)/(10000)

Now the function becomes,

y=ae^{(-\ln 2)/(10000)\cdot t}

Now, only 1/8 of the radioactive parent remains, so

\Rightarrow (1)/(8)=1\cdot e^{(-\ln 2)/(10000)\cdot t}

\Rightarrow (1)/(8)=e^{(-\ln 2)/(10000)\cdot t}

\Rightarrow \ln (1)/(8)=\ln e^{(-\ln 2)/(10000)\cdot t}

\Rightarrow -\ln 8={(-\ln 2)/(10000)\cdot t}\cdot \ln e

\Rightarrow -\ln 8={(-\ln 2)/(10000)\cdot t}

\Rightarrow t=(-\ln 8\cdot 10000)/(-\ln 2)

\Rightarrow t=30,000

IF the half-life of an unstable isotope is 10,000 years and only 1/8 of the radioactive parent remains, the sample is 30,000 years old.

A child is standing across the street from his apartment . His mother is on their balcony . The angle of elevation between the child's eyes and his mothers eyes is 22 degrees . If the distance between their eyes is 32 feet , how far is the child standing from his apartment building ? Round to the nearest foot .

Answers

You've got a leg and an angle next to it (and another, straight one, too), which is enough to calculate any side and angle of the triangle with some knowledge of trigonometry (in my country, you need to be in the last months of 9th grade or later to know that)
To calculate the other angle, you simply substract our known one (22) from 90. Nothing interesting here.
To calculate the hypotenuse, which is actually what is requested, you need to use the cosine of 22, which is about 0.9272, this way: h=l1/cos(L1), that means our distance is 32/0.9272, which is about 34.5131 ft (doesn't matter if there are feet, cm, inches, meters or whatever)

Answer:

30 Ft

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Step-by-step explanation: