Solve the linear system by graphing y = x - 1 y =3x

20 Points!!!!!<br>Find the cofactors of each entry in the first row of the matrix

Paraphin [41]

Answer:

can you make the more clear

8 0

3 years ago

Can anybody help me with this

zepelin [54]

Sorry no...............

4 0

3 years ago

Haley and tyler are on the cross country team. tyler can run 1 mile (ata constant speed) in 8 minutes and 20 seconds. haley's di

Tems11 [23]

Haler ran farther than Tyler in 10 minutes. She covered an extra 0.05 miles compared to Tyler.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two numbers and variables.

An independent variable is a variable that does not depend on any other variable for its value whereas a dependent variable is a variable that depend on any other variable for its value.

Tyler can run 1 mile in 8 minutes and 20 seconds.

Time taken = 8 mins + 20 sec (0.33 min) = 8.33 minutes

Speed = distance / time = 1 mile / 8.33 = 0.12 mile per min

In 10 minutes, distance = 0.12 mile per min * 10 min = 1.2 mile

Haler is given by:

y = 8x; where y is time and x is distance.

In 10 minutes, distance = y/8 = 10/8 = 1.25 miles

Haler ran farther than Tyler in 10 minutes. She covered an extra 0.05 miles compared to Tyler.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

7 0

2 years ago

Graph the solution on the number line |x-3| <5

Anettt [7]

Answer:

-2<x<8

see below for graph

Step-by-step explanation:

First, we need to solve the inequality.

Inequality: |x-3|<5

Split into two equations:

x-3<5

x-3>-5 (notice how the sign is flipped when we make the number negative)

let's start with x-3<5

add 3 to both sides

x<8

now

x-3>-5

add 3 to both sides

x>-2

The graph is below

the intersection is the solution.

Notice how I made the maroon line go to the right- which shows that it's greater than (for x>-2) and the silver line go to the left, which shows that it's less than (for x<8)

the equation is -2<x<8

Hope this helps!

8 0

3 years ago

A recently retired couple has $150,000 to invest to supplement their social security. The invested some of it in an account that

kumpel [21]

The couple invests $9,000 in the account that paid 10% simple interest and $6,000 in the account that paid 5% simple interest.

Step-by-step explanation:

Step 1; Assume x is the amount of money put into the account that pays 10% simple interest and y the amount of money put into the account that pays 5% simple interest. It is given that the couple invests $150,000 in total. so

x + y = 150,000, take this as equation 1.

So x is the amount of money put into the account that gives 10% of x back and y is the amount of money into the account that gives 5% of y back. Both accounts give back $12,000. So,

0.10x + 0.05y = 12,000, take this as equation 2.

Step 2; Now we solve these equations.

Equation 1 can also be, y = 150,000 - x, take this as equation 3.

Substitute equation 3 in 2,

0.10x + 0.05(150,000 - x) = 12,000,

0.10x + 7,500 - 0.05x = 12,000,

Taking the known values to the right and keeping the unknown x values on the right, we get

0.05x = 12,000 - 7,500,

0.05x = 4,500.

So x = 90,000

Substitute this is equation 1,

x + y = 150,000, y = 150,000 - x, y = 150,000 - 90,000 = 60,000.

So the old couple invests $90,000 into the account that gives 10% of simple interest and $60,000 into the account that gives 5% simple interest.

3 0

3 years ago

Solve the linear system by graphing y = x - 1 y =3x - 9