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Liono4ka [1.6K]

3 years ago

8

Need help pls someone

1 answer:

dimaraw [331]3 years ago

7 0

$\sqrt[3]{250a^{11}}=\sqrt[3]{125\cdot2a^{2+9}}=\sqrt[3]{125}\cdot\sqrt[3]{2a^2\cdot a^9}=5\sqrt[3]{2a^2}\cdot\sqrt[3]{a^9}\\\\=5\sqrt[3]{2a^2}\cdot\sqrt[3]{a^{3\cdot3}}=5\sqrt[3]{2a^2}\cdot\sqrt[3]{(a^3)^3}=5\sqrt[3]{2^2}\cdot a^3\\\\=\boxed{5a^3\sqrt[3]{2a^2}}$

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Suppose that the speeds of cars travelling on California freeways are normally distributed with a mean of miles/hour. The highwa

Readme [11.4K]

Answer:

the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour

Step-by-step explanation:

The computation of the standard deviation of the speeds of cars is shown below;

The z score for the top 1% is 2.326

So,

= (75 - 61) ÷ standard deviation = 2.326

Standard deviation is

= 14 ÷ 2.326

= 6.0 miles per hour

Hence, the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour

4 0

2 years ago

The 7th grade has 195 students. There are 25 more girls than boys in the grade. How many boys are there in 7th grade

Cloud [144]

Answer:

85 boys, 110 girls

Step-by-step explanation:

85 boys+25 more girls= 110 girls

110 girls+85 boys= 195 total students

7 0

2 years ago

Read 2 more answers

Harris Teeter is selling gala apples for 0.98 per pound Adam purchase 3.5 pounds of the apples how much did she pay for her purc

Schach [20]

Total purchase = (unit cost)(# of pounds purchased)

Here, that total is ($0.98/lb)(3.5 lb) = $3.43 (answer)

8 0

2 years ago

HELP ASAP!!!!!!!!!!!!!

Mandarinka [93]

It will be 69 degrees.

(x-1)+x+43=180
2x+42=180
2x=138
x=69

4 0

3 years ago

In each of problems 5 through 11, find the general solution of the given differential equation

Brrunno [24]

The complete question is

"Find the general solution of the given differential equation

y''-y=0, y1(t)=e^t , y2(t)=cosht

The function $y(t)=e^t$ is the solution of the given differential equation.

The function y(t)=cosht is the solution of given differential equation.

<h3>What is a function?</h3>

The function is a type of relation, or rule, that maps one input to specific single output.

Given;

$y_1(t) = e^t$

Given differential equations are,

y''-y = 0

So that,

$y' (t) = e^t, y'' (t) = e^t$

Substitute values in the given differential equation.

$e^t -e^t=0$

Therefore, the function $y(t)=e^t$ is the solution of the given differential equation.

Another function;

$y(t)=cosht$

So that,

$y"(t)=sinht\\\\y"(t)=cosht$

Hence, function y(t)=cosht is solution of given differential equation.

Learn more about function here:

brainly.com/question/2253924

#SPJ1

7 0

1 year ago