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2 years ago

Which expression represents the perimeter of a rectangle above? the width is (3y-5)ft and the length is 2yft

Mathematics

2 answers:

vichka [17]2 years ago

7 0

The answer is actually b, (10y+10)

Gnoma [55]2 years ago

5 0

Perimeter (P)= 2Length (L) +2Width (W)
P=2L + 2W
P=(2y)+(3y-5)
P=5y-5
A. 5y-5

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Find the range of allowable values based on a measure of 130 inches if the values can vary by 1.4%.

olganol [36]

Answer:

130 ± 1.82 inches i.e the range of the values is 128.18 inches to 131.82 inches.

Step-by-step explanation:

The range of values required here implies the values fall between the least and maximum values.

Since the values can vary by 1.4%, the range can be determined by:

1.4% of 130 = $\frac{1.4}{100}$ x 130

= 0.014 x 130

= 1.82

The addition or subtraction of 1.82 to/from 130 inches gives the required range.

i.e the range of allowable values = 130 ± 1.82 inches.

Thus,

130 - 1.82 = 128.18 inches

130 + 1.82 = 131.82 inches

The values falls between 128.18 inches to 131.82 inches.

6 0

2 years ago

IM OFFERING 100 POINTS, I NEED HELP AND ITS TIMED

Assoli18 [71]

Answer:

look below

Step-by-step explanation:

Part A: The y-intercept is $1,500

The x-intercept is 20 days

Part B: Equation of the line in point-slope form is y - 1350 = -75×(x - 2) Equation of the line in slope-intercept form is y = -75·x + 1500

Equation of the line in standard form is y + 75·x = 1500

Part C:

f(x) = -75·x + 1500

Part D: $1,125 Step-by-step explanation: The information given are; x, g(x) 0, $1,500 2, $1,350 4, $1,200 The equation of a straight line relation between the x, and y, coordinates in slope and intercept form is y = m·x + c Where; m = The slope c = The y-intercept From the data, we have two points, (x₁, y₁), (x₂, y₂) given as (0, 1,500), (2, 1350); The y-intercept = y at x = 0 = 1,500 y = -75·x + 1500 x = 1500/75 = 20

Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/5966450-the-table-of-values-represents-a-linear-function-g-x-where-x-is.html

I hope this helps I know its kinda confusing

3 0

2 years ago

A researcher is testing how bacterial cells react to different environments. She placed a petri dish that initially had 32,000 b

Nataly [62]

<u>Solution- </u>

A researcher placed a petri dish with 32,000 bacterial cells. One hour after being placed in the vacuum chamber, the number of cells in the petri dish had halved. Another hour later, the number of cells had again halved.

This can be represented as exponential decreasing function,

$y=a(1 - r)^x$

Where,

a = starting amount = 32000
r = rate = 50% = 0.5 as the sample becomes halved in each hour
x = hours

Putting the values,

$\Rightarrow y=32000(1 - 0.5)^x$

$\Rightarrow y=32000(0.5)^x$

y-intercept means, where x=0, so

$\Rightarrow y=32000(0.5)^0\\\\\Rightarrow y=32000\times 1=32000$

The coordinate of this poin will be (0, 32000)

This means when x=0 or at the starting of the research, the number of bacteria cells was 32000.

After 3 hours, number of bacteria cells will be,

$\Rightarrow y=32000(0.5)^3$

$\Rightarrow y=32000\times 0.125$

$\Rightarrow y=4000$

The coordinate of this point will be (3, 4000)

7 0

2 years ago

Anja is creating a triangle using three straws. The two shorter straws have lengths of 20 cm and 21 cm. How long, in centimeters

Digiron [165]

A^2 + b^2 = c^2...a and b are the legs and c is the hypotenuse
20^2 + 21^2 = c^2
400 + 441 = c^2
841 = c^2
sqrt 841 = c
29 = c <== third straw will be 29 cm

3 0

2 years ago

Ruth Ann wants to research two different careers, medical doctor and astronaut.

elixir [45]

Answer: visit the US Bureau of Labor Statistics website to find information on both careers

The career section

hope this helped :)

Step-by-step explanation: there is none

3 0

2 years ago

Read 2 more answers