3 years ago

B please tysm I will give you Brainly

Mathematics

1 answer:

juin [17]3 years ago

7 0

Answer:

-2

Step-by-step explanation:

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Can someone pl help. Thx

kakasveta [241]

Answer:

3.10?

Step-by-step explanation:

i dont know sorry if its wrong

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3 years ago

The cube of the difference of 1 and a number.

vampirchik [111]

No clue but good luck

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3 years ago

Imani bought books for college and paid 35% of the total cost. Her parents paid the remaining balance of $438.75. The total cost

Gnom [1K]

Answer:

$\$675$

Step-by-step explanation:

Remember that

$100\%-35\%=65\%=65/100=0.65$

Let

x ----> the total cost of the books

we know that

The total cost of the book multiplied by 0.65 must be equal to $438.75

The linear equation that represent this situation is

$0.65x=438.75$

solve for x

$x=438.75/0.65\\x=\$675$

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3 years ago

Which expressions are equivalent to the one below? Check all that apply. 7^3*7^x

myrzilka [38]

The answer is A and F

5 0

3 years ago

Read 2 more answers

Prove, using the second derivative, that the general quadratic y= ax^2+bx+c, is:

lozanna [386]

There are three things you have to know:

A function is convex when its second derivative $f''(x)>0$
A function is concave when it second derivative $f''(x)$
The derivative of a power, $x^n$ , is $nx^{n-1}$

So, the first derivative is

$y'=2ax+b$

and the second derivative is

$y''=2a$

This implies that the second derivative of a parabola is constant, and of course that 2 doesn't change the sign of $a$ .

3 0

3 years ago