MATHEMATICS MIDDLE SCHOOL

Which of these systems has one unique solution? A. 4x−3y=1 and 4x−3y=−2
B. 4x−3y=1 and 8x−6y=2
C. 4x−3y=1 and −8x+6y=−4
D. 4x−3y=1 and 4x+3y=1

Answers

Answer 1
Answer:

Answer:

D

Step-by-step explanation:

A,B,and C can not solve. because they have wrong answers.

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How many times larger is 6.1 times 10 to the seventh power than 2.1 times 10 to the negative fourth power?

Answers

Answer:

the correct answer to this question is 1.281 ×10 to the sixty seventh power

225 divided by 10 exponent 0

Answers

u would divide like normal so u would get 22.5
If the exponent is 0 than wouldn't it just be 225 divided by 10. 225 divided by 10 is 22.5 

....????? plzz helllpppp

Answers

Answer:

\cos 60= (1)/(2)

\tan 60 = √(3)

Step-by-step explanation:

See the diagram given with the question first.

Here we are given a right triangle with two angles other than the right angle are 60° and 30°.

The length of the side opposite to 30° is 4 and the side opposite to 60° is 4√3 and automatically the length of the hypotenuse is 8.

Now, \cos 60= (Base)/(Hypotenuse) = (4)/(8) = (1)/(2)

Again. \tan 60 = (Perpendicular)/(Base) =(4√(3) )/(4) =√(3)  

(Answer)

Identify the independent and dependent variable:The equation t=12p+12 gives the total cost t (in dollars) of a meal with a tip of p percent (in decimal form)

Answers

Answer:

dependent variable = t

independent variable = p

Step-by-step explanation:

Hi, in the equation t=12p+12, p is the independent variable, because is an input value.

t is the dependent variable, because is the output value, it depends of the input value.

For example if p =1, t=24

t(1) =12(1) +12

t(1) = 12+12 =24

But if p=0; t=12

t (0) = 12(0) +12 =12

We can see how the value of t varies as the value of p changes.

in thers of the statement, the total cost  of the meal (t) depends on the tip percentage (p).
t=12p+12
12p+12=t
_. _
12. 12 1p=t

FIND THE QUOTIENT :450÷1.2=

Answers


0375.0
_______
12|4500.
-36
_____
90
-84
____
60
-60
____
00
It 375
375 is your answer :)

What is the solution to the equation? 4(x – 3) = 7x + 24 A. x = 12 B. x = –12 C. x = –36 D. x = 4

Answers

Simplify both sides of the equation

4(x-3) = 7x+24

4x-12 = 7x+24

Subtract 7x from both sides

4x-12-7x= 7x+24-7x

-3x-12= 24

Add 12 to both sides

-3x-12+12 = 24+12

-3x=36

Divide both sides by -3

-3x/-3= 36/-3

x = -12

Answer : B


I hope that's help !


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