All categories

3 years ago

PLEASE HELP ME WITH THIS QUESTION. please and thank you

Mathematics

1 answer:

Ahat [919]3 years ago

6 0

Associative property moves the parenthesis

Choice B

You might be interested in

What is the equation of this line in standard form?

Otrada [13]

Answer:

standard form is 6x−11y=13

4 0

3 years ago

Read 2 more answers

Passing through the point (3,-2) and parallel to the line with the equation Y=1/3 x-7

umka21 [38]

Answer:

y = $\frac{1}{3}$ x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{1}{3}$ x - 7 ← is in slope- intercept form

with m = $\frac{1}{3}$

Parallel lines have equal slopes, thus

y = $\frac{1}{3}$ x + c ← is the partial equation

To find c substitute (3, - 2) into the partial equation

- 2 = 1 + c ⇒ c = - 2 - 1 = - 3

y = $\frac{1}{3}$ x - 3 ← equation of line

7 0

4 years ago

The time, t, required to travel a fixed distance varies inversely as the

Lemur [1.5K]

You must travel at 42 mph for 4 hours

Solution:

Time varies inversely as rate of motion

Let "t" be the time required

Let "r" be the rate of motion

Then, we get

$t \propto \frac{1}{r}\\\\t = k \times \frac{1}{r}\\\\t = \frac{k}{r} -------- eqn 1$

Where, "k" is the constant of proportionality

You travel 3 hours at a rate of 56 mph

Substitute t = 3 and r = 56 in eqn 1

$3 = \frac{k}{56}\\\\k = 3 \times 56\\\\k = 168$

Find the rate you must travel for 4 hours

r = ? and t = 4

Substitute t = 4 and k = 168 in eqn 1

$4 = \frac{168}{r}\\\\r = \frac{168}{4}\\\\r = 42$

Thus you must travel at 42 mph for 4 hours

4 0

4 years ago

Set up the characteristic equation, which is given by r2 − 5r − 6 = 0. The roots of this equation are given by r1 = 6 and r2 = −

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

From your characteristic equation, your recursive equation is

$f(n+2) = 5 f(n=1) +6f(n)$

the general solution:

$f(n) = A6^n + B(-1)^n$

The initial conditions are

$f(0) =1 ~~~and~~~ f(1) = 3$

For f(0) = 1, that is

$f(0) = A6^0 + B(-1)^0 = A+ B=1 (*)$

For f(1) = 3, that is

$f(1) = A6^1 + B(-1)^1 = 3$

$6A- B = 3 (**)$

From (*) and (**) you solve for A and B

you have A = 4/7 and B= 3/7

Replace A, B into the general one, you have the particular solution for the given condition

$f(n) = 4/7 *6^n +3/7*(-1)^n$

4 0

4 years ago

Andrea opened a savings account with $1,750 she received for graduation. The account pays 4.3% simple interest. What is the bala

Schach [20]

Answer:

$1787.625

Step-by-step explanation:

We first determine the interest earned in 6 months time using the simple interest formula;

$I=\frac{PRT}{100}\\I=\frac{1750*4.3*0.5}{100}\\I=37.625$

The balance in the account will be;

1750 + 37.625 = $1787.625

5 0

4 years ago