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harkovskaia [24]

3 years ago

15

2n+3n+7=-41. how do you solve number 1?

1 answer:

Sidana [21]3 years ago

6 0

Combine like terms 2n+3n= 5n, then you subtract 7 from both sides and get 5n=-48 -48/5= -9.6

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Hello, I'm trying to solve 6x + y = 4, x - 4y = 19. I have found the y but I cant seem to find the x. Plz help and we cant use d

gizmo_the_mogwai [7]

Answer:

$x=\frac{7}{5}$

$y=-\frac{22}{5}$

Step-by-step explanation:

Given:

The given expressions are.

$6x+y=4$

$x-4y=19$

We need to find x and y values.

Solution:

Equation 1⇒ $6x+y=4$

Equation 2⇒ $x-4y=19$

First solve the equation 1 for y.

$6x+y=4$

$y = 4-6x$ --------(3)

Substitute $y = 4-6x$ in equation 2.

$x-4(4-6x)=19$

Simplify.

$x-(4\times 4 - 4\times 6x)=19$

$x-(16-24x)=19$

$x-16+24x=19$

Add 16 both side of the equation.

$25x-16+16=19+16$

$25x=35$

$x=\frac{35}{25}$

Divide Numerator and denominator by 5.

$x=\frac{7}{5}$

Substitute x value in equation 3 and simplify.

$y=4-6(\frac{7}{5})$

$y=4-\frac{6\times 7}{5}$

$y=4-\frac{42}{5}$

$y=\frac{5\times 4-42}{5}$

$y=\frac{20-42}{5}$

$y=-\frac{22}{5}$ .

Therefore, the value of $x=\frac{7}{5}$ and $y=-\frac{22}{5}$ .

6 0

4 years ago

Ten customers enter a convenience store during their lunch hour on Monday. The age of each customer is identified on the dot plo

Ksenya-84 [330]

F. 30 is the correct answer, for mean you just have to add all the ages together and divide by the number of customers

7 0

3 years ago

Read 2 more answers

Use the equation to identify a and b * a = 1/5 and b = 3 a = 3 and b = 1/5 a= 1/5 and b =1 a = 1 and b = 3

Nadya [2.5K]

Answer:

$a = 3$

$b = \frac{1}{5}$

Step-by-step explanation:

Given

$f(x) = 3(\frac{1}{5})^x$ --- Missing from the question

Required

Identify a and b

The given equation is an exponential function and the general form is:

$f(x) = ab^x$

When $f(x) = ab^x$ is compared to $f(x) = 3(\frac{1}{5})^x$

We have that: $a = 3$ and $b = \frac{1}{5}$

8 0

3 years ago

A law firm has eight male and six female lawyers. A committee of five, two male lawyers and three female lawyers, is to be chose

valina [46]

The number of way we can choose 2 males out of 8 is combinations of:

C(8,2)=7*8/2 =56/(1*2)=28
to choose 3 females out of 6
C(6,3)=6*5*4/(1*2*3)=120/6=20
the number of committees is= 28*20=560

5 0

4 years ago

1. Vladimir Hirsch worked these hours last week: Monday, 8 hours; Tuesday, 7 hours;

olga2289 [7]

Answer: he worked 32 hours and make $512

4 0

3 years ago