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3 years ago

Four hundred five times seventy

Mathematics

2 answers:

12345 [234]3 years ago

7 0

Answer:

Step-by-step explanation:

28350, two thousand and eight, three hundred and fifty

Bas_tet [7]3 years ago

7 0

Answer:

28350

Step-by-step explanation:

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In a certain Algebra 2 class of 28 students, 5 of them play basketball and 21 of them play baseball. There are 5 students who pl

umka2103 [35]

Answer:3/28; Neither means NOT basketball AND not baseball

Step-by-step explanation:

a) Using set notation to answer the question,

Let U be universal set(total number of student)

B be those that play basketball

C be those that play baseball

BUC be those that plays either of the games

(BUC)' will them be those that play neither

BnC be those that plays both games

(U) = 28

n(B) = 5

n(C) = 21

Before we get the probability that a student chosen randomly from the class plays both basketball and baseball, we need to get BnC first

Using the formula

n(BUC)=n(B) + n(C) -n(BnC)...(1) and;

n(U)= n(BUC)+ n(BUC)'...(2)

n(BUC)= n(U) - n(BUC)'

n(BUC) = 28-5 = 23

Therefore using eqn 1,

23= 5+21-n(BnC)

23=26-n(BnC)

n(BnC)= 3

P{n(BnC)} = n(BnC)/n(U)= 3/28

b) Neither means NOT basketball AND not baseball i.e those that played NONE of the games.

6 0

3 years ago

Ella wants to use the commutative property of multiplication to help find the product 5x4 what number sentence can she use

likoan [24]

You can use 4x5=20,5x4=20

8 0

3 years ago

Paige can run one lap around a track in 3 1/5 minutes. How long would it take her to run 6 1/2 laps?

Dafna11 [192]

1 lap equals to 3 1/5 minutes what about 6 1/2 cross multiply to get 6 1/2*3 1/5 divide by 1 you get 20 4/5 translated to time is 20 minutes and 48 seconds (4/5*60=48)
20 minutes 48seconds

3 0

3 years ago

Suppose a rectangular garden plot has a length that can be expressed as x+2 feet and a width expressed as x+7 feet. Write a poly

mafiozo [28]

Answer:

$Area = x^2 + 9x + 14$

$Perimeter = 4x + 18$

Step-by-step explanation:

Given:

Length of rectangular garden = (x + 2) ft

Width = (x + 7) ft

Required:

a. Polynomial expression of the area of the garden

b. Polynomial expression of the perimeter of the garden

SOLUTION:

Area of the rectangular garden = length × width

$Area = (x + 2)(x + 7)$

Expand using the distributive property of multiplication

$Area = x(x + 7) +2(x + 7)$

$Area = x^2 + 7x + 2x + 14$

$Area = x^2 + 9x + 14$

Perimeter = 2(length) + 2(width)

$Perimeter = 2(x + 2) + 2(x + 7)$

$Perimeter = 2x + 4 + 2x + 14$

Collect like terms

$Perimeter = 2x + 2x + 4 + 14$

$Perimeter = 4x + 18$

6 0

3 years ago

Factor this expression completely and then place the factors in the proper location. Note: Place factors alphabetically!

Usimov [2.4K]

To solve this problem you must apply the proccedure shown below:

1. You have the following expression given in the problem above:

$mn - 4m - 5n + 20$

2. The first thing you must do to factor the expression is to group the terms, as following:

$(mn-4m)+(-5n+20)$

3. Now, choose the greatest common factor of each group:

$m(n-4)-5(n-4)$

4. Now, you need to factor the expression by factoring out the $n-4$

$(m-5)(n-4)$

The answer is: $(m-5)(n-4)$

5 0

3 years ago