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Shalnov [3]
3 years ago
7

Help me with this please​

Mathematics
2 answers:
grigory [225]3 years ago
8 0

what do you mean 2<_ 10?

If x<_10,

a) 1,2,5,10

b) 4

c) 6

Olegator [25]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Given x ∈ { 2, 3, 4, 5, 6, 7, 8, 9, 10 }

Factors of 10 are 1, 2, 5, 10, thus

P = { 2, 5, 10 } ← 1 is not a member of the universal set

and the number of elements in P , that is n(P) = 3

The complement of P is the elements not in P but in the universal set

P' = { 3, 4, 6,7,8,9 }

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Line c passes through points (1, 14) and (7, 7). Line d is perpendicular to c. What is the slope of line d?
anyanavicka [17]

Answer:

6/7

Step-by-step explanation:

Your first step will be to find the slope of Line C. Using the slope formula of \frac{y_{2}-y_1 }{x_2-x_1}, the slope of Line C is \frac{7-14}{7-1} = \frac{-7}{6}.

If Line D is perpendicular to C, that means the slope is the negative reciprocal of Line C. So, that means the slope is 6/7.

3 0
2 years ago
A multiplication problem that will give you the answer 24x⁷​
N76 [4]
7x7(12+9) to the power of 3
4 0
3 years ago
15 trading cards he wants to give to 5 friends. Each friend gets same number of trading cards
earnstyle [38]

Answer:

Each friend gets 3 cards

Step-by-step explanation:

Divide 15 by 5 since he is splitting 15 cards with 5 friends.

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6 0
3 years ago
I need to know what the answer is
wel
(x/2)-(5x/6)=1/9
x=-1/3
7 0
4 years ago
The coffee Lily likes is composed of 97.3% water and 2.7% cocoa. The coffee John likes is composed of 96% water and 4% cocoa. Ho
mestny [16]

30 ounces of the coffee John likes consists of

  • 0.96\cdot30=28.8 ounces of water
  • 0.04\cdot30=1.2 ounces of cocoa

To this mixture we're adding x ounces of water, so that the new mix has a total volume of 30+x ounces and matches the composition of the coffee Lily likes. This means it would consist of

  • 0.973\cdot(30+x)=28.8+x ounces of water
  • 0.027\cdot(30+x)=1.2 ounces of cocoa (same amount of cocoa as before because pure water is being added)

Solve for x:

0.973(30+x)=28.8+x\implies29.12+0.973x=28.8+x

\implies0.39=0.027x

\implies x\approx14.4

###

Just to confirm: the new mixture consists of

  • 28.8+14.4=43.2 ounces of water
  • 1.2+0=1.2 ounces of cocoa

giving a total volume of 43.2+1.2=44.4 ounces of coffee, and \dfrac{43.2}{44.4}\approx0.973, as required.

4 0
4 years ago
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