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tigry1 [53]
3 years ago
8

Sasha's grandma is going to sew this umbrella for Sasha. The umbrella is made of 4 identical triangles. If each triangle is 3 fe

et long and 4 feet high, how many square feet of fabric does Sasha's grandma need? Explain how you found your answer.
Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

Sasha's grandma will need 48 square feet of fabric to sew the umbrella.

Step-by-step explanation:

Since Sasha's grandma is going to sew an umbrella for Sasha, which will be made of 4 identical triangles, if each triangle is 3 feet long and 4 feet high, to determine how many square feet of fabric does Sasha's grandma need, the following calculation must be done:

(3 x 4) x 4 = X

12 x 4 = X

48 = X

Therefore, Sasha's grandma will need 48 square feet of fabric to sew the umbrella.

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Suppose two events A and B are mutually exclusive, with P(A) ≠ 0 and P(B) ≠ 0. By working through the following steps, you'll se
DanielleElmas [232]

Answer with Step-by-step explanation:

We are given that two events A and B are mutually exclusive.

A\cap B=\phi

P(A\cap B)=0

P(A)\neq 0

P(B)\neq 0

a.For mutually exclusive events,

P(A/B)=\frac{P(A\cap B)}{P(B)}=\frac{0}{P(A)}=0

Therefore, event A can not occurred if event B has occurred because two events can not occur together.

Answer:No, by definition mutually exclusive events cannot occur together.

b.When two events are independent

Then , P(A\cap B)=P(A)\cdot P(B)

P(A/B)=\frac{P(A)\cdot P(B)}{P(B)}=P(A)

If two events are mutually exclusive then

P(A\cap B)=0

Then , P(A/B)=0

Therefore, P(A/B)\neq P(A)

Hence, we can concluded that events A and B are not independent if they are mutually exclusive.

Answer:Yes, P(A/B)\neq P(A)

7 0
2 years ago
Find the nth term of this quadratic sequence 3 8 15 24
olga2289 [7]

Answer:

35

Step-by-step explanation:

A quadratic sequence is a form. of mathematical progression of numbers in which the subsequent differences between each consecutive term differ by the exact amount. This is known as the common second difference.

Hence in this case,

we have

S= 3+8+15+24+…..+Tn - 1.

S=. 3+8+15+……………..Tn-1 + Tn

Deducting 2nd series from the first

We have 0=3+5+7+…….Tn

Hence, we have Tn= n (n+2)

= 24 (9+2)

= 24 + 11

= 35

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Step-by-step explanation:

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PLAYGROUND There are 87 children at a playground. There are 23 more boys than girls. How many of each are at the playground?
UNO [17]

Answer:

G=32 B=55

Step-by-step explanation:

55+32=87

I know this answer is right bc I got it right on my ws.

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3 years ago
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solniwko [45]
Elena packed 48 cubes.
Each cube has an edge of 1 centimeter.
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