All categories

2 years ago

How do you solve linear equations using substitution

Mathematics

1 answer:

GuDViN [60]2 years ago

4 0

You substitute the y from the second eqaution to the y in the first equation

You might be interested in

Steve and Juan are reading the same book, and Juan is about 1/2 of the book ahead of Steve. Which of the following differences m

expeople1 [14]

Answer:

6/7-61/1

Step-by-step explanation:

5 0

3 years ago

1. use rounding or compatible numbers to estimate each product or quotient

Lady bird [3.3K]

#1. About 15.
5x3

#2. About 9
26/3=8 2/3

3 0

3 years ago

Read 2 more answers

Where does y = 1.8x + 3.1 and y = 2.3x + 1.9 intersect brainly

butalik [34]

Answer:

4.9=4.2

Step-by-step explanation:

4 0

3 years ago

COLOR THEME

Lelu [443]

Answer:

the correct answer is A. Because it shows the equal qualifient of the answer

4 0

3 years ago

A store finds that its sales revenue changes at a rate given by S'(t) = −30t2 + 420t dollars per day where t is the number of da

allochka39001 [22]

Answer:

Step-by-step explanation:

Give the rate of change of sales revenue of a store modeled by the equation $S'(t)= -30t^{2} + 420t$ . The Total sales revenue function S(t) can be gotten by integrating the function given as shown;

$\int\limits {S'(t)} \, dt = \int\limits ({-30t^{2}+420t }) \, dt \\S(t) = \frac{-30t^{3} }{3}+\frac{420t^{2} }{2}\\ S(t)= -10t^{3} +210t^{2} \\$

a) The total sales for the first week after the campaign ends (t = 0 to t = 7) is expressed as shown;

$Given\ S(t) = -10t^{3} + 210t^{2}$

$S(0) = -10(0)^{3} + 210(0)^{2}\\S(0) = 0\\S(7) = -10(7)^{3} + 210(7)^{2}\\S(7) = -3430+10,290\\S(7) = 6,860$

Total sales = S(7) - S(0)

= 6,860 - 0

Total sales for the first week = $6,860

b) The total sales for the secondweek after the campaign ends (t = 7 to t = 14) is expressed as shown;

Total sales for the second week = S(14)-S(7)

Given S(7) = 6,860

To get S(14);

$S(14) = -10(14)^{3} + 210(14)^{2}\\S(14) = -27,440+41,160\\S(14) = 13,720$

The total sales for the second week after campaign ends = 13,720 - 6,860

= $6,860

8 0

3 years ago