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Ratling [72]
3 years ago
10

In the Changing Dimensions of 3D Figures

Mathematics
1 answer:
den301095 [7]3 years ago
7 0

Answer:factor of 9

Step-by-step explanation:

Given

prism were changed by a scale factor of 3

Suppose prism is rectangular in shape

So surface are is S.A.=2(lw+wb+lb)

Where l=length

w=width

b=breadth

So new length,breadth and width is

l'=3l

w'=3w

b'=3b

S.A.=2(3\times 3lw+3\times 3wb+3\times 3lb)

S.A.=2\times 3^2(lw+wb+lb)

S.A.=3^2\times 2(lw+wb+lb)

So new surface area would change by a factor of 9

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60/100. Divide by 10: 6/10. Divide by 2: 3/5. She read 3/5 of the book :)
3 0
3 years ago
This bag has an unknown number of lollipops and jelly snakes in it. I know that Pr (jelly snake) = 4/5. How many jelly snakes co
juin [17]

Answer:

40.

Step-by-step explanation:

Let J represent jelly snake.

Let L represent lollipops

Let S represent sample space

Let y represent the number of jelly snake in the bag. I.e

Number of J = y

Number of L = 10

Number of S = 10 + y

From the question given, we were told that the probability of jelly snake P(J) is 4/5.

But probability of jelly snake, P(J) is given by:

P(J) = nJ/nS

nJ = y

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Thu, we can obtain the number jelly snake, y, in the bag as follow:

P(J) = nJ/nS

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Cross multiply

5y = 4(10 + y)

Clear bracket

5y = 40 + 4y

Collect like terms

5y – 4y = 40

y = 40

Therefore, the number of jelly snake in the bag is 40

8 0
3 years ago
If a= 3 -1 5 and b= 5 3 1
tiny-mole [99]

Answer:

det(A)=-det(B)

Step-by-step explanation:

We have two matrices A, and B.

Matrix B is obtained by swapping rows 1 and 3 of matrix A.

Whenever we swap rows in matrices, the determinants does not change but the sign changes.

Therefore

det(A)=-det(B)

Also no two rows of of both matrices are the same, therefore

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soldi70 [24.7K]

Answer:

With what exactly can i help u with??

4 0
3 years ago
Read 2 more answers
Ming used the calculations shown to find out how much he would spend on 6 pound of ground beef if 10 pounds cost $25.00 what was
ElenaW [278]

Answer:

6 pounds of ground beef cost $15.

Step-by-step explanation:

\frac{6}{10} :\frac{y}{25}

10 × y = 6 × 25

10y = 150

10y ÷ 10 = 150 ÷ 10

y = 15

3 0
2 years ago
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