MATHEMATICS HIGH SCHOOL

Solve the equation.

2.2= z - 1.1
z=?

Answers

Answer 1

Answer:

Answer:

z = 3.3

Step-by-step explanation:

Given

2.2 = z - 1.1 ( add 1.1 to both sides )

3.3 = z

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What is the y-intercept of the graph of y= -4x^2+8x-3? -3 2 1 -4

11Select the correct answer.
The elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate the
yavariable, and what is the solution for this system?
x + 3y - 42
2x-y-14
OA. Multiply the second equation by-3. The solution is x = 12. y - 9.
ов.
Multiply the second equation by-2. The solution is x-12. y = 10.
OC.
Multiply the second equation by 2. The solution is x - 15, y = 9.
OD
Multiply the second equation by 3. The solution is x - 12. = 10.
Reset
Next

Answers

Answer:

D. Multiply the second equation by 3. The solution is x = 12, y = 10

Step-by-step explanation:

Given:

x + 3y = 42 (first equation)

2x - y = 14 (second equation)

To solve by elimination, starting with elimination of the y-variable, multiply the second equation by 3 to get a third equation.

2x - y = 14 (2nd eqn.) × 3

6x - 3y = 42 (3rd equation)

Add the 3rd equation and the 1st equation together.

x + 3y = 42 (first equation)

6x - 3y = 42 (3rd equation)

7x = 84

7x/7 = 84/7

x = 12

To find y, substitute x = 12 in the first equation

x + 3y = 42 (first equation)

12 + 3y = 42

12 + 3y - 12 = 42 - 12

3y = 30

3y/3 = 30/3

y = 10

Solution is x = 12, y = 10

Simplify.7 square root of 3 end root minus 4 square root of 6 end root plus square root of 48 end root minus square root of 54A) 11 square root of 6 end root minus 7 square root of 12
B) 11 square root of 3 end root minus 7 square root of 6
C) negative 3 square root of 9
D) 4 square root of 9

Answers

The simplest form of the expression ''7 square root of 3 end root minus 4 square root of 6 end root plus the square root of 48 end root minus the square root of 54'' would be, ''11 square root of 3 end root minus 7 square root of 6''. Hence, option B is true.

Used the concept of the square root of a number that states that,

The square root of a number is the number that, when multiplied by itself, gives the original number.

Given that the expression is,

7 square root of 3 end root minus 4 square root of 6 end root plus the square root of 48 end root minus the square root of 54.

Now, the mathematical form of the expression is,

$7√(3) - 4√(6) + √(48) - √(54)$

Simplify each term,

$7√(3) - 4√(6) +4 √(3) - 3√(6)$

Combine like terms,

$7√(3) +4 √(3) - 4√(6) - 3√(6)$

$11√(3) - 7√(6)$

It can be written as,

11 square root of 3 end root minus 7 square root of 6.

Hence, option B is true.

To learn more about square root visit:

brainly.com/question/428672

#SPJ6

$7√(3)-4√(6)+√(48)-√(54)=7√(3)-4√(6)+√(16*3)-√(9*6)\n=7√(3)-4√(6)+4√(3)-3√(6)=11√(3)-7√(6)$

200 at 6% how much will Rachel have in her account in 10years

Answers

simple interest
I=PRT
I=interst
P=principle (present amount)
R=rate (in decimal)
T=time in years

200=Principal
6%=0.06=R
T=10 years

I=200(0.06)(10)
I=12(10)
I=120

ok so she earns 120
add that
200+120=320

she has $320 after 10 years

"Find the point of intersection for each system of linear equations. Which method did you use & why?"

Answers

Set each equation to get Y by its self
Then set the equations equal to each other and solve for X
Easy(:

Help please! absolute value equations!

Answers

Answer:

n = -1 n = -7

Step-by-step explanation:

5| 2n+8| +3 = 33

Subtract 3 from each side

5| 2n+8| +3-3 = 33-3

5| 2n+8| = 30

Divide by 5

5/5| 2n+8| = 30/5

| 2n+8| = 6

An absolute value equation has two solutions, one positive and one negative

2n+8 = 6 2n+8 = -6

Subtract 8 from each side

2n+8-8=6-8 2n+8-8 = -6-8

2n = -2 2n = -14

Divide by 2

2n/2 = -2/2 2n/2 = -14/2

n = -1 n = -7

Name the Property of Equality that justifies the statement: If m<A + M<B = M<C. Then, M<A = M<C - M<BTransitive Property
Symmetric Property
Reflexive Property
Subtraction Property