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3 years ago

Multiply. Type your answer in the box. Do not use any spaces. (–9) x (+2) =

Mathematics

1 answer:

vampirchik [111]3 years ago

3 0

-18 because 9 times 2 is 18 but because you're multiplying a negative with a positive it equals -18

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A test consists of 490 true or false questions. If the student guesses on each question, what is the standard deviation of the n

monitta

I believe the answer is 1.

3 0

3 years ago

Find the equations of the line u that cuts the x-axis at x=-6 and the y-axis at y=-4

never [62]

The equation of the line is y = -2/3(x) - 4

5 0

3 years ago

równanie zmiany prędkość autokaru poruszającego się po prostym odcinku szosy i rozpoczynającego hamowanie od szybkości 20m/s ma

Rasek [7]

Answer:

s = 22.5 m

Step-by-step explanation:

the equation for the speed change of a coach moving along a straight section of the road and starting braking at a speed of 20 m / s has the form v (t) = 25-5t. Using integral calculus, determine the coach's braking distance.

v (t) = 25 - 5 t

at t = 0 , v = 20 m/s

Let the distance is s.

$s =\int v(t) dt\\\\s =\int (25 - 5t)dt\\\\s= 25 t - 2.5 t^2 \\$

Let at t = t, the v = 20

So,

20 = 25 - 5 t

t = 1 s

So, s = 25 x 1 - 2.5 x 1 = 22.5 m

3 0

3 years ago

You have decided to purchase a car for $19,000. The credit union requires a 10% down payment and will finance the balance with a

Lady_Fox [76]

<h2>○=> <u>Correct option</u> :</h2>

$\color{plum} \bold{ \tt \: \bold{C. \$20,652.00}}$

<h3>○=> <u>Steps to derive correct option</u> :</h3>

Selling price of a car = $19,000

Percentage of sales tax in the city = 8.3%

Sales tax :

$= \tt \frac{8.3}{10 \times 100} \times 1900$

$= \tt \frac{8.3 \times 19000}{1000}$

$= \tt \frac{1577000}{1000}$

$\color{plum} = \tt \$1577$

Thus, the sales tax on the car = $1577

Cost of license and title = $75

Total price of car :

= Cost price of car + Sales tax + cost of license/title

$= \tt19000 + 1577 + 75$

$\color{plum} = \tt \$20652$

Thus, the total purchase price of the car = $20,652.00

Therefore, the correct option is <em>(C) $20,652.00</em>

6 0

3 years ago

Find the remainder of (x4 – 2) ÷ (x + 1).

prisoha [69]

Please write (x4 – 2) ÷ (x + 1) as <span>(x^4 – 2) ÷ (x + 1).

We can find the remainder using synth. div. as follows:

_________________
-1 / 1 0 0 0 -2
-1 1 -1 1
------------------------------
1 -1 1 -1 -1

The remainder is -1.</span>

5 0

3 years ago