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yulyashka [42]
2 years ago
11

A small class has 10 students, 3 are girls and 7 are boys. The teacher is going to choose two students at random. What is the pr

obability that the first student chosen is a boy and the second is a girl? Write your answer as a fraction in reduced form​
Mathematics
1 answer:
Andreas93 [3]2 years ago
8 0

Answer: The boy would be chosen

Step-by-step explanation:

the fraction for the probability for girls is 3/10

the fraction for the probability for boys is 7/10

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F(x)= (x-2)(x-3)(x-5) simplify the right side. What is the equation?
Serga [27]

Answer:

x³ - 10x² + 31x - 30

Step-by-step explanation:

Given

(x - 2)(x - 3)(x - 5) ← expand the second pair of factors using FOIL

= (x - 2)(x² - 8x + 15) ← distribute

= x³ - 8x² + 15x - 2x² + 16x - 30 ← collect like terms

= x³ - 10x² + 31x - 30

5 0
3 years ago
1) 8(4w - 5) =<br>2) 7 (-35 - 6) -<br>can you help me solve these​
tankabanditka [31]
1) 32w -40
2) -275

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3 years ago
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Ilya [14]
brainly.com/question/13983892
5 0
2 years ago
Need help with working perimeter and area please
SVETLANKA909090 [29]

Answer:

Area = 228 m²

Perimeter = 60 m

Step-by-step explanation:

The figure given shows a rectangle that has a cut triangular portion.

✔️Area of the figure = area of rectangle - area of the triangular cut portion

= L*W + ½*bh

Where,

L = 20 m

W = 12 m

b = 20 - (8 + 8) = 4 m

h = 6 m

Plug in the values

Area = 20*12 - ½*4*6

Area = 240 - 12

Area = 228 m²

✔️Perimeter = perimeter of rectangle - base of the triangular cut portion

= 2(L + W) - b

L = 20 m

W = 12 m

b = b = 20 - (8 + 8) = 4 m

Plug in the values

Perimeter = 2(20 + 12) - 4

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3 years ago
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alexandr1967 [171]

Answer:

C −2a^3+9a^2+45a+6ab^2+18b^2

Step-by-step explanation:

(a+3) ( −2a^2+15a+6b^2)

Distribute the a to the large term in parentheses and the 3 to the large term in parentheses

a ( −2a^2+15a+6b^2)+3  ( −2a^2+15a+6b^2)

−2a^3+15a^2+6ab^2 −6a^2+45a+18b^2

Combine like terms

−2a^3+15a^2−6a^2+6ab^2 +45a+18b^2

-2 a^3 + 9 a^2 + 6 a b^2 + 45 a + 18 b^2

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2 years ago
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