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3 years ago

How do you solve this ?

Mathematics

1 answer:

saveliy_v [14]3 years ago

5 0

When given a value of the variable, we replace each instance of the variable in the problem with that number. In this case, the expression becomes:

$\frac{3^2 + 3}{3 - 1}$

After this, we merely need to simplify the answer.

$\frac{9 + 3}{3 - 1}$

$\frac{12}{2}$

Simplifying 12/2 gives us the answer 6.

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Which expression is equivalent to the given expression?

mel-nik [20]

The answer would be b.

3 0

3 years ago

Read 2 more answers

Write an equation of the line with the given slope and y-intercept

Vinil7 [7]

Answer:

y=mx+c

y=2x+9

Step-by-step explanation:

Slope(m)=2, y-intercept(c) =9

Substitute in the equation y=mx+c

5 0

3 years ago

HELP!!! ASAP!

Feliz [49]

The solution to given system of equations is $(x, y) = (\frac{-15}{263} , \frac{-115}{263})$

The given equation has one solution

Solution:

Given system of equations are:

12x - 13y = 5 --------- eqn 1

x = 23y + 10 --------- eqn 2

We have to solve the system of equations by substitution

Substitute eqn 2 in eqn 1

12(23y + 10) - 13y = 5

276y + 120 - 13y = 5

263y = 5 - 120

263y = -115

$y = \frac{-115}{263}$

Substitute the above value of "y" in eqn 2

$x = 23 \times \frac{-115}{263} + 10\\\\x = \frac{-2645}{263} + 10\\\\x = \frac{-2645 + 2630}{263}\\\\x = \frac{-15}{263}$

Thus the solution to given system of equations is $(x, y) = (\frac{-15}{263} , \frac{-115}{263})$

Thus the given equation has one solution

4 0

3 years ago

What is the value of 7P3? 021 35 210 840

MrRissso [65]

Answer:

210

Step-by-step explanation:

The answer for 7p3 is : 210. This can be solved in the following way: 7p3 is an expression for permutation which means the number of ways of arranging 3 items from a total of 7 items.

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5 0

3 years ago

Find the values of s1 and r for a geometric sequence with s4 = 18 and s6= 8

stiv31 [10]

Answer:

see below

Step-by-step explanation:

The ratio of terms that are two terms apart (s4 and s6) is the square of the common ratio:

s6/s4 = r^2

r = √(8/18)

r = 2/3 . . . . . matches choices A and C

Using the formula for the general term, we now know enough to find the first term:

sn = s1·r^(n-1)

s4 = s1·(2/3)^(4-1)

Using s4 = 18 and multiplying by (2/3)^-3, we get ...

18·(2/3)^-3 = s1 = 18·27/8

s1 = 243/4 . . . . . matches choice A

8 0

3 years ago