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3 years ago

Find the difference between (x+7) & (3x+4)

Mathematics

1 answer:

KiRa [710]3 years ago

6 0

(x + 7) - (3x + 4) = x + 7 - 3x - 4 = (x - 3x) + (7 - 4) = -2x + 3

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When you use a paint can opener to a can of paint you use the paint can opener as a simple machine called a _____ class______

Bogdan [553]

Answer:

FIrst blank: lever

And, did you mean to put class?

Step-by-step explanation:

8 0

3 years ago

Solve for y<br> 3x+2.75y=2(.625y+5)

chubhunter [2.5K]

$3x+2.75y=2(0.625y+5)\\\\3x+2.75y=2(0.625y)+9(5)\\\\3x+2.75y=1.25y+45\ \ \ \ |-3x\\\\2.75y=1.25y+45-3x\ \ \ \ |-1.25y\\\\1.5y=45-3x\ \ \ \ \ |:1.5\\\\y=30-2x$

6 0

3 years ago

Solve the following system by graphing. What is the solution?<br> y=-4x-2<br> y=2x+4

Hunter-Best [27]

Answer:

The answer to your question is (-1, 2)

Step-by-step explanation:

Data

y = -4x - 2 Equation l

y = 2x + 4 Equation ll

Process

-Graph equation l (green line)

Plot the point (0, -2)

Starting from this point plot the point (1, -4), this point comes from the slope.

-Graph the equation ll (blue line)

Plot the point (0, 4)

Plot the point (1, 2) starting from the previous point.

-The solution is the point where the lines cross. This point is (-1, 2)

5 0

3 years ago

List all partitions of the set. (a) (1,2) (b) [a, b,c)

Alchen [17]

Answer: Hello mate!

The partition of a set is defined as a partition of the set into a nonempty subset, where the set itself is a subset of himself, then the set is a partition of himself.

a) in this we have a set of two objects; A = (1,2) the partitions of this set are: (∅), (1), (2) and (1,2). Where (∅) is the null set.

b) Now we have a set of three objects; B = (a,b,c) the partitions of this set are: (∅), (a), (b), (c), (a,b), (a,c), (b,c), (a,b,c)

3 0

3 years ago

In a group of equal number of men and women 10% men and 45% women are suffering from Malaria.What is probability a peraon select

Kaylis [27]

Answer:

The probability a person selected random is not suffering from Malaria is 0.725.

Step-by-step explanation:

Denote the events as follows:

X = a person is suffering from Malaria

M = a man

W = a woman

The information provided is:

P (M) = P (W) = 0.50

P (X|M) = 0.10

P (X|W) = 0.45

Compute the probability a person selected random is suffering from Malaria as follows:

$P(X)=P(X|M)P(M)+P(X|W)P(W)$

$=(0.10\times 0.50)+(0.45\times 0.50)\\\\=0.05+0.225\\\\=0.275$

Then the probability a person selected random is not suffering from Malaria is:

P (X') = 1 - P (X)

= 1 - 0.275

= 0.725

4 0

3 years ago