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3 years ago

Please help! Thank you!

Mathematics

1 answer:

Schach [20]3 years ago

8 0

Answer:

$\huge \boxed{ \boxed{ \sf \: y = x + 15}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know:</h3>

linear equation
linear equation word problems
PEMDAS

<h3>tips and formulas:</h3>

linear equation:y=mx+b

<h3>let's solve:</h3>

all we need to care about the middle condition which is

<h3>the new test score is 15 points more than the original score</h3>

given that

original score is x

New score is y

if you pay attention to the given condition

we can find it same as linear equation

therefore

according to the question

the equation is

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If the standard deviation for a Poisson distribution is known to be 3.60, the expected value of that Poisson distribution is

Charra [1.4K]

Answer: 12.96

Step-by-step explanation:

given data:

Poisson distributio = 3.60

solution:

The Poisson distribution expected value is same as Variance.

which is expressed as = SD^2

therefore;

the expected value

= SD^2

= 3.60^2

= 12.96

5 0

3 years ago

Hi! Please help, I'd appreciate it!

Romashka-Z-Leto [24]

The volume of sphere is $\frac{1372}{3}\pi$ feet cubed.

Step-by-step explanation:

Given,

Surface area of sphere = 196π square feet

Surface area of sphere = 4πr²

We will find radius of sphere.

$4\pi r^2=196\pi$

Dividing both sides by 4π

$\frac{4\pi r^2}{4\pi}=\frac{196\pi}{4\pi}\\\\r^2=49$

Taking square root on both sides

$\sqrt{r^2}=\sqrt{49}\\r=7$

The radius is 7 feet.

Volume of sphere = $\frac{4}{3}\pi r^3$

$Volume=\frac{4}{3}\pi (7)^3\\\\Volume= \frac{4}{3}\pi *343\\\\Volume = \frac{1372}{3}\pi$

The volume of sphere is $\frac{1372}{3}\pi$ feet cubed.

Keywords: volume, surface area

Learn more about surface area at:

#LearnwithBrainly

3 0

3 years ago

Factorize the following expressions

klio [65]

Step-by-step explanation:

1. a² - ( b ² - 2bc + c² ) = a ² - b ² + 2bc - c²

2. 8p² - 18 q²

3. 3ab² - c²d + 3ab - b²c²

4. x² - 2x + 1

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3 years ago

A bicycle has a listed price of $813.95 before tax. If the sales tax rate is 8.5%, find the total cost of the bicycle with sales

Nesterboy [21]

Answer:

$883.14

Step-by-step explanation:

Have a great day! ;)

4 0

2 years ago

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A bookshop sets the marked price of the book 25% higher than its cost, and then sold it at 10% discount

mestny [16]

Answer:

$405 - Can u plz give me the brainliest answer if possible? Plz!!!!!!!!!!!!!!

Step-by-step explanation:

360 x 0.25 = 90

360 + 90 = 450

450 x 0.1 = 45

450 - 45 = 405

Have a nice day!!!!!! :-)

7 0

2 years ago