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erastova [34]
3 years ago
6

If n(A) =15 n (B) = 9 n(A∩B) =4 find n(A U B)

Mathematics
1 answer:
Xelga [282]3 years ago
5 0

Answer:

20

Step-by-step explanation:

n(A) only =15-4=11

n(B) only=9-4=5

n(A n B)=4

n(A U B)=11+5+4=20

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A recipe says that 1 and 3/4 cups of baking soda are needed to make one batch of a homemade cleaning product. How many total cup
givi [52]

Answer:

3.75 cups of baking soda are needed to make 2 and 1/2 batches of the cleaning product

Step-by-step explanation:

This question can be solved by a rule of three.

A recipe says that 1 and 3/4 cups of baking soda are needed to make one batch of a homemade cleaning product.

1 + 3/4 cups = 1 + 0.75 = 1.75 cups for one batch.

How many total cups of baking soda are needed to make 2 and 1/2 batches of the cleaning product?

2 and 1/2 batches is 2 + 0.5 = 2.5 batches.

1.75 cups for one batch. How many cups for 2.5 batches? So

1 batch - 1.5 cups

2.5 batches - x cups

c = 2.5*1.5 = 3.75

3.75 cups of baking soda are needed to make 2 and 1/2 batches of the cleaning product

8 0
3 years ago
Read 2 more answers
Find the area of a triangle with a base of 30 cm and a height of 75 cm
vivado [14]
The formula for the area of a triangle is

1/2 b•h

Let’s plug in our values !

1/2 (30•75)

1/2 • 2,250 = ?

2,250/2 = 1,125

The area of the triangle is 1,125 cm^2

I hope I helped !
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5 0
3 years ago
Read 2 more answers
Find the value of X
olchik [2.2K]
<h3>Answer:  112</h3>

=========================================================

Explanation:

The angle adjacent to the 146 degree angle is 180-146 = 34 degrees.

In other words, the angles 34 and 146 combine to 180. These angles are supplementary.

The tickmarks on this triangle tell us it is isosceles. The angles opposite the congruent sides are congruent angles. So the unmarked interior angles (not marked x) are 34 degrees each.

Now use the fact that any triangle has its interior angles always add to 180

x+34+34 = 180

x+68 = 180

x = 180-68

x = 112

5 0
3 years ago
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aleksandrvk [35]

Answer:

7/10

0.70

Step-by-step explanation:

BETH- 4.30

JOSE- 3.60

4.30 - 3.60 = .70

.70 = 7/10

3 0
2 years ago
What does 6(4c-2) simplify as?<br> Help pleas
Tom [10]

Step-by-step explanation:

\tt{ 6(4c-2)  }

\tt{ 24c-12  }

6 0
2 years ago
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