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4 years ago

The percent of increase or decrease i. this irem

Mathematics

1 answer:

Nikolay [14]4 years ago

3 0

Since the price is going down, it's going to be a percent decrease. Now to find the percent, we divide the "after" price by the "before" price.

240 / 320 = 0.75 = 75%

The item had a 75% decrease.

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Harry can read 40 pages in 25 minutes. How many pages can he read in 11/2 hours?

Naddik [55]

Answer:

180 pages?

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is 8/9 - 15/45

vagabundo [1.1K]

5/9 or 0.5 recurring
hope this helps :)

4 0

3 years ago

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Find an expression for the function f(x) whose graph is a line passing through the points (8,-5) and (-9,2). f(x)=

kolbaska11 [484]

Answer: f(x) = - 7x/17 - 29/17

Step-by-step explanation:

The expression for the function f(x) would be represented in the slope-intercept form, y = mx + c

Where

c represents the y intercept.

m represents the slope of the line.

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis represent

change in the value of y = y2 - y1

Change in value of x = x2 -x1

The line passes through (8, - 5) and (- 9, 2),

y2 = 2

y1 = - 5

x2 = - 9

x1 = 8

Slope,m = ( 2 - - 5)/(- 9 - 8) = 7/- 17 =

- 7/17

To determine the intercept, we would substitute x = 8, y = - 5 and m = - 7/17 into

y = mx + c. It becomes

- 5 = - 7/17 × 8 + c

- 5 = - 56/17 + c

c = - 5 + 56/17

c = - 29/17

The equation becomes

f(x) = - 7x/17 - 29/17

8 0

3 years ago

Read 2 more answers

8t-9 is less than or equal to 79

sattari [20]

Answer:

t ≤ 11 (or all values 11 or less)

Step-by-step explanation:

8t - 9 ≤ 79

<em>So, I am assuming you are trying to find the value(s) of "t".</em>

Add 9 to both sides.

8t ≤ 88

Divide 8 by both sides.

t ≤ 11

ANSWER

t ≤ 11

8 0

3 years ago

How much will it cost to print a circular sign with a radius of 1.1 feet if the printing company charges $27 per square foot? us

Serga [27]

Answer: To find the cost to print a circular frame, we need to first find the area of circle.

Given: $r=1.1$

We know that:

Area of circle $=\pi \times r^{2}$

$=3.14 \times 1.1^{2}$

$=3.7994$

Also we are given cost per square foot is $27

Therefore, the cost to print a circular sign with a radius of 1.1 feet is:

$3.7994 \times 27= 102.58$ or $102.58

3 0

3 years ago