All categories

3 years ago

Why is it important to be able to solve for variables in equations?

2 answers:

6 0

Because that way you can find the answer when you are given a large amount of information and you don't have to guess until you get the answer right.

Bad White [126]3 years ago

5 0

SO YOU GET A GOOD GRADE ON YOUR TESTS FOR HIGH SCHOOL AND COLLEGE.

You might be interested in

Please answer it for me or show me how to do it? I will mark you branliast answer !!

klasskru [66]

Answer:

Step-by-step explanation:

If HI and IJ are both the same and meet at the same point, the triangles would be the same.

7 0

3 years ago

Find the solution of the system by graphing

zvonat [6]

Answer:

x = -2

y = -1

(-2, -1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

y = x + 1

3x + 3y = -9

Step 2: Solve for x

Substitution

Substitute in y: 3x + 3(x + 1) = -9
Distribute 3: 3x + 3x + 3 = -9
Combine like terms: 6x + 3 = -9
Isolate x term: 6x = -12
Isolate x: x = -2

Step 3: Solve for y

Define original equation: y = x + 1
Substitute in x: y = -2 + 1
Add: y = -1

Step 4: Graph systems

Check the solution set.

6 0

2 years ago

If f(x) = -1x + 4 then what is f(-2)?

satela [25.4K]

Answer:

$\huge \boxed{f(-2)=6}$

Step-by-step explanation:

$\sf f(x)=-1x+4$

Switching x variable with -2.

$\sf f(-2)=-1(-2)+4$

Evaluating.

$\sf f(-2)=2+4$

$\sf f(-2)=6$

3 0

3 years ago

Read 2 more answers

↓↓ASAP PLAS HELP WILL GIVE BRAINLYEST WILL GIVE BRAINLYEST↓↓

Stels [109]

we know that

diameter of the base of a cylindrical can= 4 in----------> r=2 in

h=6.5 in

[surface area]=2*[pi*r²]+[2*pi*r*h]

then

[surface area]=2*[pi*2²]+[2*pi*2*6.5]=[ 25.13 ]+[ 81.68 ]=106.81 in²

the answer is 106.8 in²

3 0

2 years ago

A train leaves boston and travels toward its destination at a speed of 60 mph. One hour later, an express train leaves Boston an

Margarita [4]

Taking into account the supplied speeds, Boston is from the destination to:

240 miles

<h3>Calculation of the distance between Boston and Place of Destination</h3>

To identify the distance between Boston and the destination of the trains, it must be remembered that the speed mentioned for each one is a reference to the distance traveled per hour, therefore, after each hour, each train will travel :

Regular train: 60 miles
Express train: 80 miles

According to the information given, when the express train leaves, the regular train has a 60-mile lead, which is getting shorter hour by hour because the express train travels 20 miles per hour more than the normal train.

Therefore, in three hours, the express train would catch up with the regular train, calculating the distance thanks to the speed formula:

$Speed =\frac{Distance}{Time}$

And clearing the distance:

$Distance=Speed*Time$

$Distance=80\frac{miles}{hour}*3hours$

$Distance=240miles$

Therefore, the destination would be 240 miles from Boston, which would take four hours by regular train and three hours by express train.

If you want to learn more about Mathematics, you can visit the following link: brainly.com/question/24600056

3 0

2 years ago