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4 years ago

Item has been reduced by 80% what is the price of the item now?

Mathematics

1 answer:

Eva8 [605]4 years ago

6 0

I think you use

xamount(1-.8)

.8 being 80% as a decimal.

1 being 100%

so .2 or 20% remaining multiplied by whatever amount.

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It’s problem #2 Write an equation for the line in the slope-intercept form.

vitfil [10]

Answer:

y=3/4x + 4

Step-by-step explanation:

slope intercept form is y=mx+b

get two points on the graph which are (4,6) and (8,9)
use the formula y2-y1/x2-x1
9-6/8-4
3/4 that will be the m because it's the slope
use 4 as your y intercept since that's when it crosses the y-axis
insert these numbers in the formula
y=3/4x + 4

3 0

3 years ago

HELP!! MULTIPLE CHOICE!!

EleoNora [17]

Equality d is true, the others aren't.

8 0

3 years ago

Key Features of Graphs of Functions - Part 1

dexar [7]

Answer:

See below

Step-by-step explanation:

Q1.

In a function, every output value corresponds to exactly one input

value.

The words to be interchanged are underlined. The function as per definition has exactly one output for each input.

Q2.

Part A

Because it has 2 same input value for 2 different output values

Part B

The two points are (4, -2) and (4, 2)

5 0

3 years ago

Read 2 more answers

In this figure, sin(a) = 23

WITCHER [35]

$a$ and $b$ are complementary, or $b=\dfrac\pi2-a$ . So

$\cos b=\cos\left(\dfrac\pi2-a\right)=\sin a$

and so $\cos b=\dfrac23$ .

4 0

3 years ago

Please help it will be brainlist please make sure you are 100% the awnser is right

Dominik [7]

Answer:

Step-by-step explanation:

Step 1: Sum of angles on a straight line is 180

Step 2:

2x + 25 + y = 180

2x + y = 180 - 25

2x + y = 155 (1)

Step 3:

3x - 10 + y = 180

3x + y = 180 + 10

3x + y = 190 (2)

Step 4: Substract equation 1 from 2

3x + y - 2x - y = 190 - 155

x = 35

Step 5:

Substitute x in equation 1 to find y

2x + y = 55

2(35) + y = 155

70 + y = 155

y = 155 - 70

y = 85

4 0

3 years ago