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Rama09 [41]
4 years ago
7

Which equations are true when the value of x is 3?

Mathematics
1 answer:
8090 [49]4 years ago
3 0

Answer:

  • C. 13x = 39
  • E. x + 7 = 10
  • F. x – 1 = 2

Step-by-step explanation:

Putting 3 into each of the equations in place of x, you get ...

  A. 3·3 = 1 . . . . false

  B. 3·3 = 33 . . . . false

  C. 13·3 = 39 . . . . TRUE

  D. 3 +4 = 9 . . . . false

  E. 3 +7 = 10 . . . . TRUE

  F. 3 -1 = 2 . . . . TRUE

Applicable choices are C, E, F.

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To find the area of a circle with a diameter of 18.
Serga [27]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the areas.

Since we know that, radius = diameter /2

here, => d = 2r ,

hence we use the formula as,

A = πr^2 ,

here option d.) is correct.

8 0
3 years ago
A line passes through point A(12,18). A second point on the line has an x-value that is 125% of the x-value of point A and a y-v
Reil [10]

Answer:

(y - 18) = -3/2 (x - 12)

Step-by-step explanation:

125% of 12 equals 15

75% of 18 equals 13 1/2

so the slope equals 4.5/-3 or -3/2

7 0
3 years ago
A table of data is given.x(-2,-1,0,1,2)f(x)(71,13,3,0.6,0.1) which exponential model best represents the data
Dovator [93]

The equation of the exponential model is f(x) = 3 * 0.2^x

<h3>How to determine the exponential model?</h3>

The table of data is given as:

x(-2,-1,0,1,2)

f(x)(71,13,3,0.6,0.1)

An exponential model is represented as:

f(x) = ab^x

When x= 0 and f(x) = 3;

We have:

ab^0 = 3

This gives

a = 3

When x= 1 and f(x) = 0.6

We have:

ab^1 = 0.6

This gives

ab = 0.6

Substitute 3 for a

3b = 0.6

Divide both sides by 3

b = 0.2

Substitute b = 0.2 and a =3 in f(x) = ab^x

f(x) = 3 * 0.2^x

Hence, the equation of the exponential model is f(x) = 3 * 0.2^x

Read more about exponential model at:

brainly.com/question/2441623

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5 0
2 years ago
Find the 75th term of the arithmetic sequence -17, -13, -9....
Sphinxa [80]

Answer:

The 75th term of the arithmetic sequence -17, -13, -9.... is:

a_{75}=279

Step-by-step explanation:

Given the sequence

-17, -13, -9....

An arithmetic sequence has a constant difference 'd' and is defined by  

a_n=a_1+\left(n-1\right)d

computing the differences of all the adjacent terms

-13-\left(-17\right)=4,\:\quad \:-9-\left(-13\right)=4

The difference between all the adjacent terms is the same and equal to

d=4

The first element of the sequence is:

a_1=-17

now substitute d=4 and a_1=-17 in the nth term of the sequence

a_n=a_1+\left(n-1\right)d

a_n=4\left(n-1\right)-17

a_n=4n-21

Now, substitute n = 75 in the a_n=4n-21 sequence to determine the 75th sequence

a_n=4n-21

a_{75}=4\left(75\right)-21

a_{75}=300-21

a_{75}=279

Therefore,  the 75th term of the arithmetic sequence -17, -13, -9.... is:

a_{75}=279

3 0
3 years ago
Consider the extremely large integers $$x = 2\cdot 3\cdot 5\cdot 7\cdot 11\cdot 13\cdot 17\cdot 19\cdot 23\cdot 29$$ and $$y = 2
-BARSIC- [3]

Answer:

Hence, greatest common divisor of x and y is : 29.

Step-by-step explanation:

We are given:

We are given the large integers 'x' and 'y' as:

x=2×3×5×7×11×13×17×19×23×29

We could clearly see that x is the multiplication of all the prime numbers starting from 2 and ending at 29.

we are given y as:

y=29×31×37×41×43×47×53×59×61×67

Clearly we could see that y is also a multiplication of all the prime numbers starting from 29 and ending at 67.

<em>" In mathematics, the greatest common divisor (gcd) of two or more integers, which are not all zero, is the largest positive integer that divides each of the integers "</em>

Hence from the expression of x and y we could clearly see that the only common divisor that divides both x and y is 29.

Hence, greatest common divisor of x and y is 29.

8 0
4 years ago
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