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Novosadov [1.4K]
4 years ago
11

What are the elements in this set? D={16,19,21} , E={16,18,19,20}

Mathematics
1 answer:
dimaraw [331]4 years ago
5 0
D = {16, 19, 21}
E = {16, 18, 19, 20}
D ∩ E = {16, 19}
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Please help me find the surface area of the triangular prism ( number 3)
antiseptic1488 [7]

Check the picture below.

so the <u>triangular prism</u> is really 3 rectangles and two triangles stacked up to each other at the edges, so if we simply get the area of each figure individually and sum them up, that's the area of the prism.

let's notice, the triangles have a base of 2.4 and a height/altitude of 1.

\bf \stackrel{\textit{2 triangles's area}}{2\left[ \cfrac{1}{2}(2.4)(1) \right]}~~+~~\stackrel{\textit{right rectangle}}{(2\cdot 1.5)}~~+~~\stackrel{\textit{left rectangle}}{(2\cdot 1.7)}~~+~~\stackrel{\textit{bottom rectangle}}{(2\cdot 2.4)} \\\\\\ 2.4+3+3.4+4.8\implies 5.4+8.2\implies 13.6

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4 years ago
Which is greater or equal to 8/10 or 63/100
Elena L [17]
8/10 is greater than 63/100 because when 8/10 is turned into a percentage it is greater
8 0
3 years ago
Priya has a recipe for banana bread. She uses 7/1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same r
wlad13 [49]

Answer:

5b=2f

Step-by-step explanation:

Priya uses 7\dfrac{1}{2} cups of floor to make 3 loaves of banana bread.

Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour.

To find the relation between b and f, the steps are as follows :

\dfrac{\text{cups of flour}}{\text{loaves of banana bread}}=\dfrac{7 \dfrac{1}{2}}{3}\\\\=\dfrac{\dfrac{15}{2}}{3}\\\\=\dfrac{15}{2}\times \dfrac{1}{3}\\\\=\dfrac{5}{2}

It means,

\dfrac{f}{b}=\dfrac{5}{2}\\\\5b=2f

So, the relationship between b and f is "5b=2f".

4 0
3 years ago
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alex41 [277]

Answer:

Step-by-step explanation:

An = -2+(n-1)3

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8 0
3 years ago
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7 groups of 8=6 groups of 8 plus
vredina [299]

Answer:

<u>7 groups of 8 = 6 groups of 8 plus 1 group of 8</u>

Step-by-step explanation:

1. Let's review the information given to answer the question correctly:

7 groups of 8 = 6 groups of 8 plus ?

2. Let's answer the question, this way:

How much are 7 groups of 8? 56 = 7 * 8

How much are 6 groups of 8? 48 = 6 * 8

What is the difference between 7 groups of 8 and 6 groups of 8?

(7 - 6 ) * 8 = 1 * 8

Therefore,

<u>7 groups of 8 = 6 groups of 8 plus 1 group of 8</u>

6 0
3 years ago
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