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3 years ago

PLZ HURRY IT'S URGENT!!!

Mathematics

2 answers:

MariettaO [177]3 years ago

7 0

Answer:

Option B.

Step-by-step explanation:

Intersection of two sets is a set of common terms in both the sets.

Now the two sets are P = {1, 2, 3, 4}, Q = {4, 5, 6, 7} and R = {7, 8, 9, 10}

Common terms in P and Q,

P∩Q = {∅}

Now the common terms in R and (P∩Q).

(P∩Q)∩R = {∅}

Answer is a null set.

Option B, will be the answer.

Mkey [24]3 years ago

4 0

Answer:

Step-by-step explanation:

null set

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3x + y = 7 <br> 4x + 2y = 16

Brilliant_brown [7]

Answer:

1) 3x=7-y

X=7-y/3

2) 4x=16-y

X=16-y/4

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4 years ago

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from a group of 10 men and 8 women, 5 people are to be selected for a committee so that at least 4 men are on the committee. how

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Only 1 way and that is to have 4 men and 1 woman

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Lian invested an amount of money at an interest rate of 5.2% per year.

Zigmanuir [339]

Answer:

$6500

Step-by-step explanation:

Let the amount of money invested by Lian be $x

Interest rate = 5.2% per year

interest earned in first year will be 5.2% of amount of money invested by Lian .

(note: since in first year there will be no interest accrued on interest so interest for first year is simple interest )

interest earned in one year if money invested by Lian is $x

= 5.2% of $x (1)

But , it is given in one year she received interest of 338 dollars

so, 338 dollars must be equal to 5.2% of $x

equating $338 with 5.2% of $x , we have

5.2% of x = 338

=> (5.2/100) * x = 338

=>5.2 x = 338*100

=> x = 33800/5.2 = 6500.

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3 years ago

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3 years ago

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In the figure below, the two triangular faces of the prism are fight triangles with sides of length 3, 4, and 5. The other three

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The figure of the prism is attached below.

The total surface area of the prism equals the sum of areas of two triangles and the three rectangles.

Surface Area of Prism = Area of 2 Triangles + Area of 3 Rectangles.

Area of a Triangle = 0.5 x Base x Height
Area of a Triangle = 0.5 x 3 x 4 = 6 square units

There are 3 rectangles. From the figure we can see that the bottom most rectangle has the dimensions 4 by 6. The left most rectangle has the dimensions 3 x 6 and the right most rectangle has the dimensions 5 by 6.

So, the Area of 3 rectangles will be = (4 x 6) + (3 x 6) + (5 x 6) = 72 square units

The Surface Area of the prism will be:

Surface Area = 2 (4) + 72 = 84 square units

Thus the correct answer is option A

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3 years ago