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3 years ago

What is an inequality

Mathematics

1 answer:

agasfer [191]3 years ago

3 0

Inequalities are number sentences that compare two numbers. sometimes we use variables when writing inequality’s.

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6. You worked a total of 200 hours this summer at the local restaurant. Some of

zysi [14]

Answer:

im in 6th grade

Step-by-step explanation:

i dunno

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3 years ago

The table below shows the amount that must be repaid, y, when x dollars are borrowed.

Marat540 [252]

Answer:

see below

Step-by-step explanation:

You can try the answer choices to see which one works. Since the amount repaid is greater than the amount borrowed, you can be pretty sure that the multiplier of x will not be 4/5 (a value less than 1).

You can see right away that

y = 5/4x

does not work for x=100, because it gives y=(5/4)(100) = 125, and the table value is 135. Note that 135 is 10 more than 125, so we expect that ...

y = 5/4x +10

will be correct. Trying that function on the other table values shows it fits exactly:

5/4(200) +10 = 250 +10 = 260

5/4(500) +10 = 625 +10 = 635

5/4(800) +10 = 1000 +10 = 1010

_____

You can also use the table values to create the relation equation. One possible method uses the 2-point form of the equation for a line:

y = (y2 -y1)/(x2 -x1)(x -x1) +y1

y = (260 -135)/(200 -100)(x -100) +135

y = 125/100(x -100) +135 . . . . simplify a bit

y = 5/4x -125 +135 . . . . . . . . . simplify more

y = 5/4x +10 . . . . . . . . . . . . . . simpler yet; matches 3rd choice

4 0

4 years ago

Type A is 4 feet tall and grows at a rate of 23 inches per year. Type B is 8 feet tall and grows at a rate of 15 inches per year

horrorfan [7]

Answer:

i didn't know answer sorry

6 0

3 years ago

Read 2 more answers

How does this polynomial identity work on numerical relationships?<br> (y + x) (ax + b)

allsm [11]

Answer:

Let us take 'a' in the place of 'y' so the equation becomes

(y+x) (ax+b)

Step-by-step explanation:

Step 1:

(a + x) (ax + b)

Step 2: Proof

Checking polynomial identity.

(ax+b )(x+a) = FOIL

(ax+b)(x+a)

ax^2+a^2x is the First Term in the FOIL

ax^2 + a^2x + bx + ab

(ax+b)(x+a)+bx+ab is the Second Term in the FOIL

Add both expressions together from First and Second Term

= ax^2 + a^2x + bx + ab

Step 3: Proof

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

Identity is Found .

Trying with numbers now

(ax+b)(x+a) = ax^2 + a^2x + bx + ab

((2*5)+8)(5+2) =(2*5^2)+(2^2*5)+(8*5)+(2*8)

((10)+8)(7) =(2*25)+(4*5)+(40)+(16)

(18)(7) =(50)+(20)+(56)

126 =126

7 0

4 years ago

How do i do this? very confused

dusya [7]

Answer:

x=-1

Step-by-step explanation:

since XY is a straight line, XM = MY

so, 5x+8=9x+12

4x=-4

x=-1

3 0

3 years ago

Read 2 more answers