MATHEMATICS HIGH SCHOOL

HELP ASAP SIMPLE QUESTION!! WILL MARK BRAINLIEST!!

Answers

Answer 1

Answer: The average of the numbers would not change

Answer 2

Answer:

Answer:

Did not change.

Step-by-step explanation:

This is because the average is based off the total sum of all the constituents. Thus adding 10 and subtracting 10 doesn't change anything.

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An object and a scale model of the object are the same size, but they have different shapes. True or false?
Solve for N N + 3.2 = 9.6
Use the quadratic formula to solve 2y2 – 10y + 8 = 0.

Solve the system using elimination.

5x + 8y = –29
7x – 2y = –67

Answers

7x-2y+-67
multiply both sides of the bottom by 4 and add 5x+8y=-29
28x-8y=268

33x=-297
x=-9

5(-9) +8y= -29
-45 +8y =-29
8y= 16
y=2

6+3{[4-2(4-7)]}=
I need answer this whit steps.

pls.

Answers

Step-by-step explanation:

6+3((4-2(4-7))

1. 6+3((2(4-7))

2. 6+3((2(*-3)

3. 6+3(-6)

4. 6+(3*-6)

5. 6+-18

6. -12

If postage costs $.54 for the first ounce and $.22 for the each additional ounce, calculate the cost of mailing a 10- ounce envelope. A. $2.20 B. $5.08
C. $2.52
D. $5.40

Answers

Answer:

Hence, the total cost of mailing 10 ounces is:

$ 2.52

Step-by-step explanation:

If postage costs $.54 for the first ounce and $.22 for the each additional ounce.

i.e. cost of first ounce=$ 0.54.

Now let x denote the number of ounces after the first ounce,

Hence, the cost of x ounces=$ (0.22×x)=$ 0.22 x

Hence, the cost of mailing (x+1) ounces is: $ (0.54+0.22 x)

Now, we have to find the cost of mailing a 10- ounce envelope.

i.e. after the first ounce we need 9 more ounces.

Hence, the total cost of mailing is calculated as:

$=$ (0.54+0.22* 9)\n\n=$ (0.54+1.98)\n\n=$ 2.52\n$

Hence, cost of mailing 10 ounces is:

$ 2.52

10-first oz=9oz
0.54 for first
0.22 times 9=1.98
total is 1.98+0.54=2.52

C

So, I really need help with functional notation...If anyone could help me solve these problems, I'd be extremely grateful!!Given the function G ( x ) =sqrt 2x-1 , find the value G (1), G(0), G(5), G(-4).
Given the function F ( x ) = x^2 - 3 x + 1, find the value F (-3), F(0), F(1).
Given the function H ( x ) = 3 x - 1, find the value H (2).

Answers

$g(x)=√(2x-1)$
$g(1)=√(2(1)-1)=√(2-1)=√(1)=1$
$g(0)=√(2(0)-1)=√(0-1)=√(-1)=i$
$g(5)=√(2(5)-1)=√(10-1)=√(9)=3$
$g(-4)=√(2(-4)-1)=√(-8-1)=√(-7)=i√(7)$

$f(x)=x^(2)-3x+1$
$f(-3)=-3^(2)-3(-3)+1=9-(-9)+1=19$
$f(0)=0^(2)-3(0)+1=1$
$f(1)=1^(2)-3(1)+1=-1$

$h(x)=3x-1$
$h(2)=3(2)-1=5$

Solve this inequality.-5x + 7 42
x > 245
x < -175
x > 7
x < -7

Answers

Hello,

Hard to devine the non marked sign!

Let' s go without than.

-5x+7 ? 42
==>-5x? 42-7
==>-5x ? 35
==>x not ? 35/(-5)
==>x not ? -7

Answer D and the missing signe is

not ? is <
==> ? is >

Very hard to make math !!!

A stone path through her backyard. She uses 25 equally-sized stones to make a path that is 12 feet long.How long is each stone?