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Marina CMI [18]
3 years ago
13

Using the expression 5x2 + 7, match the following items. 1. 2 variable 2. 5 coefficient 3. 7 exponent 4. x constant

Mathematics
2 answers:
postnew [5]3 years ago
6 0
5x^2 + 7

the coefficient is 5
the variable is x
the exponent is 2
the constant is 7
BARSIC [14]3 years ago
3 0

Answer:

Variable: x

Coefficient: 5

Exponent: 2

Constant: 7

Step-by-step explanation:

We have been given an expression 5x^2+7. We are asked to match each term with correct option.

Variable: We know that variable is a value that is not consistent. It can change. The variables are mostly defined as letters like a,b ,c, x or y.

We can see that in our given expression the variable is x.

Coefficient: We know that a coefficient is a quantity multiplied by the variable. We can see that 5 is multiplied by x, therefore, 5 is coefficient.

Exponent: Exponent means a quantity or variable raised to a power. We can see that x is raised to second power, therefore, exponent is 2.

Constant: A quantity which remains same or which never changes.

We can see that 7 is constant for our given expression a sit remains same.

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Annita, Gary, and Tara all run races. Annita has 7 less than 4 times the number of race medals as Tara. Gary has 13 more than 2
harkovskaia [24]

Answer:

4 t - 7  = 2 t+ 13  is the required equation.

The number of race medals Tara has is t = 20 medals.

Step-by-step explanation:

Let the number of medals Tara has = t medals

So, the number of medal Anita has  = 4( Medals of Tara) - 7

= 4t - 7

And the number of medals Gary has = 2 times (Medals of Tara) + 13

= 2(t)  + 13  = 2t + 13

Now, Annita and Gary has same number of medals.

⇒  4t - 7  = 2t+ 13

or, 4t - 2t  = 7 + 13

⇒ 2t  = 20

⇒ t = 20/2 = 10

or t = 10

Hence, the number of race medals Tara has is t = 20 medals

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Step-by-step explanation:

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