Dimetri

Mathematics

1 answer:

Nikolay [14]2 years ago

6 0

Step-by-step explanation:

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Gary mails 10^3 flyers to clients in one week. How many flyers does Gary mail?

Bogdan [553]

How much flyers does Gary mail in what? a week or a day?

If you are referring to week: Simply simplify 10³.

10³ = 10 × 10 × 10 = 100 × 10 = 1000

Therefore Gary mails 1000 flyers in a week.

3 0

3 years ago

What is the answer to<br> 56 is 28% of

klio [65]

In mathematics, 'is' would be the equal sign. And 'of' would be the multiplcation sign. The missing number would be any variable.

56 is 28% of a number would be translated algebraically to:

$56 = \frac{28}{100} \times x$

Solving for x, we get:

$56 = \frac{28}{100} \times x$

Divide 28 on both sides

$2 = \frac{x}{100}$

Multiply 100 on both sides

$x = 200$

56 is 28% of 200

5 0

3 years ago

Read 2 more answers

A student answers 90% of the questions on a math exam correctly. If she answers 27 questions correctly, how many questions are

alexandr1967 [171]

Answer:

30 questions

Step-by-step explanation:

You can discover this by doing 27 divided by . 90 which equals 30.

6 0

2 years ago

(X^4)-(45x^2)+324 what are the zeroes? And how many turning points?

dmitriy555 [2]

Zeroes:

We must solve

$x^4-45x^2+324=0$

To do so, we define the auxiliary variable $t=x^2$ . The equation becomes

$t^2-45t+324=0$

The quadratic formula yields the solutions

$t=9,\quad t=36$

Substituting back $t=x^2$ gives

$x^2=9 \iff x=\pm 3,\quad x^2=36 \iff x=\pm 6$

So, the zeroes are -6, -3, 3, 6.

Turning points:

Turning points are points where a function stops being increasing to become decreasing, or vice versa. Since functions are increasing when their first derivative is positive and decreasing when it's negative, turning points are points where the first derivative is zero.

We have

$f(x)=x^4-45x^2+324 \implies f'(x)=4x^3-90x$