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4 years ago

If I'm wrong plz correct me so I can review

Mathematics

1 answer:

creativ13 [48]4 years ago

4 0

check the picture below.

so the area of the rectangle is x*y.

the area of the triangle is (1/2)(w)(z).

if we subtract the area of the triangle, from the containing rectangle, we're in effect making a whole in the rectangle, as you see there in lower-right corner.

$\bf \stackrel{rectangle}{x\cdot y}~~-~~\stackrel{triangle}{\cfrac{1}{2}wz}$

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Graph the image of the given triangle under a dilation with a scale factor of –4 and center of dilation (0,0).

Dvinal [7]

Step-by-step explanation:

Hey there!

The coordinates of a triangle are;

A (1,2)
B (1,-2)
C (-2,-2)
Scale factor = -4 and centre at (0,0)

Now, We have;

P(x,y)----------- P'(kx, ky)

Keep formula;

A(1,2)---------- A'(-4×1 ,-4×2)

= A'(-4, -8)

B(1,-2)------------- B'(-4,8)

C(-2,-2)-------------C'(8,8)

[ The A' should be kept in (-4,-8). There was no place in this graph so, i kept it just below -7. Please while plotting remember to keep it on "-8".]

Hope it helps..

8 0

4 years ago

Suppose that 10% of the undergraduates at a certain university are foreign students, and that 25% of the graduate students are f

Deffense [45]

Answer:

0.6154 = 61.54% probability that the student is an undergraduate

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Foreign

Event B: Undergraduate.

There are four times as many undergraduates as graduate students

So 4/5 = 80% are undergraduate students and 1/5 = 20% are graduate students.

Probability the student is foreign:

10% of 80%

25% of 20%. So

$P(A) = 0.1*0.8 + 0.25*0.2 = 0.13$

Probability that a student is foreign and undergraduate:

10% of 80%. So

$P(A \cap B) = 0.1*0.8 = 0.08$

What is the probability that the student is an undergraduate?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.08}{0.13} = 0.6154$

0.6154 = 61.54% probability that the student is an undergraduate

8 0

3 years ago

Tiana can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. If they decide to clear the fi

algol13

The answer is D. 5 hours, due to the fact that there football field together, so adding there times they had done the football field individually, Tiana,3 hours, and Jacob 2 hours 2h+3h=5hours. hope i helped.

8 0

4 years ago

If 200 kids went to the zoo and only 10 came back how many got lost?

kodGreya [7K]

Answer:

200- 10 = 190

so, 190 kids came back..

Step-by-step explanation:

brainliest plz

6 0

3 years ago

Read 2 more answers

If 3x = 27, then x =

makvit [3.9K]

Answer:

x = 9

Step-by-step explanation:

3x = 27

3/3x = 27/3

x = 9

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3 years ago