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Allushta [10]
3 years ago
13

The difference between seven seven times a number and 8 8 is equal to four four times the sum of the number and 3 3. Find the nu

mber. If x represents the​ number, which equation is correct for solving this​ problem?
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:

20/3

7x - 8 = 4(x+ 3)

Step-by-step explanation:

Let the unknown number be x.

Now, the difference between 7 times a number and 8 is equal to four times the sum of the number and 3.

Writing this mathematically:

7x -8 = 4(x + 3)

To solve completely, we open the bracket:

7x - 8 = 4x + 12

7x - 4x = 12 + 8

3x = 20

x = 20/3

The correct equation to solving the problem is 7x - 8 = 4(x + 3)

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Answer:

Correct option: (A) Someone with dangerous material that pass through security.

Step-by-step explanation:

Before boarding a flight every person has to pass through airport security.

The security checks every person thoroughly before they are confirmed as safe to go.

The security checks every person for some harmful substances like, weapons, chemical,etc.

If a person is caught with any of these objects the security stops them from boarding the plane.

So if a person is flagged as a risk by the airport security, he/she should have been carrying any kind of harmful substances.

Thus, the correct option is (A).

8 0
3 years ago
Given the trinomial 2x*2 + 4x − 2, what is the value of the discriminant? a. 0 b. 10 c. 32 d. 36
Komok [63]
2x^{2}+4x-2 \\  \\ \Delta=b^{2}-4ac \\  \\ \Delta=4^{2}-4*2*(-2)=16+16=32

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<em>"Associate with people who are likely to improve you."</em>
7 0
3 years ago
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Describe how to graph the solution of y &lt;= - x ^ 2 + 2x​
mafiozo [28]

Answer:

Graph the parabola opening down,

Step-by-step explanation:

With the vertex at (1, 1),factor the quadratic as y < (less than or equal to) –1(x)(x – 2),find the roots of the parabola to be 0 and 2,graph the parabola with a solid boundary line,test a point that is not on the boundary,and shade inside the parabola.

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3 years ago
What is the answer to 3/8 + -7/8
SSSSS [86.1K]
The answer is -4/8 but since you have to reduce it, it'd be -1/2
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3 years ago
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What's (negative 7) plus (positive 7) plus (negative 17) (adding positive and negative numbers)
rusak2 [61]

The answer is -17

The negative 7 and positive 7 add up to 0. They are opposites which cancel out. Think of it like being 7 dollars in debt (negative 7) and that debt is fully canceled out by the positive amount of money (positive 7). Put another way, the negative 7 means you go down 7 while the positive 7 means you go up 7.

After the first two terms cancel to 0, the -17 is the only thing left. Adding 0 to any number keeps that number the same.

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3 years ago
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