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3 years ago

Drag each tile to the table to multiply each row heading by each column heading.

Mathematics

2 answers:

Karolina [17]3 years ago

7 0

Step-by-step explanation:

This is just a matter of multiplication. 4t x 5t = $20t^{2}$ , so that will be in your first box. 4t x -4 = -16t, so that'll be in your second box. 5 x 5t = 25t, so that will be in your bottom-first box, and 5 x -4 = -20, so that will be in your last one.

wlad13 [49]3 years ago

3 0

Answer:

Hey there!

4t(5t)=20t^2

4t(-4)=-16t

5(5t)=20t

5(-4)=-20

Hope this helps :)

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Whats the answer? i've been stuck on it for a while:

Archy [21]

Answer:

5:1 (answer c)

Step-by-step explanation:

Number right: 10

Number wrong: 2

Total number: 10 + 2 = 12

Ratio of right answers to number of wrong answers:

10/2 or 10:2, or (after reduction) 5:1

7 0

3 years ago

Is point (20,45) on this line? Explain how you know?

antiseptic1488 [7]

Well, can I see the line please?

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3 years ago

Which quadratic regression equation best fits the data set?

nata0808 [166]

Answer: $y = 1.87x^2 -5.16 x + 10.54$

Step-by-step explanation:

Since the general quadratic equation is,

$y = ax^2 + bx+c$

Here the given table is,

x 1 2 3 4 5 6 7

y 5.9 8.9 13.4 20.1 30.1 45.1 67.7

By the graphing calculator,

a = 1.87024 ≈ 1.87

b= -5.15833 ≈ -5.15

c = 10.5429 ≈ 10.54

By putting the values of a, b and c,

The required quadratic equation is,

$1.87 x^2 -5.15x + 10.54$

⇒ First Option is correct.

6 0

4 years ago

Read 2 more answers

3 - 4 x 2 The first step to evaluate the expression is ...

sveticcg [70]

To find these out you have to use the strategy of P (parenthesis) E (exponents) M (multiplication) D (division) A (addition) S (subtraction)

3 - 4 x 2 The first thing you need to do is do the multiplication part first, since subtraction is the last thing you need to do. You multiply 4 and 2 and get the answer of 8, then subtract 3 which is 5

5 x 3 - 4 The first thing you need to do is multiplication 5 x 3 which equals 15 and then do 15 - 4 = 11

15 ÷ (3 x 5) x 2 The first thing you do is you do the P (parenthesis) which is (3x5) which equals 15. Then you multiply 15 with 2 which is 30 and then divide 30 with 15 which is 2

5 + 3 x 2 ÷ 6 First you need to do the Multiplication which is 3 x 2 which equals 6, and then you do the division, which is 6 ÷ 6 which is 1. Then add 5 to the 1 which is 6.

<em>Your welcome and please give brainly :)</em>

5 0

3 years ago

Find the expansion of tan x about the point X = 0.

yan [13]

Answer:

$f(x) = x +\frac{1}{3}x^{3}+....$

Step-by-step explanation:

As per the question,

let us consider f(x) = tan(x).

We know that <u>The Maclaurin series is given by:</u>

$f(x) = f(0) + \frac{f^{'}(0)}{1!}\cdot x+ \frac{f^{''}(0)}{2!}\cdot x^{2}+\frac{f^{'''}(0)}{3!}\cdot x^{3}+......$

So, differentiate the given function 3 times in order to find f'(x), f''(x) and f'''(x).

Therefore,

f'(x) = sec²x

f''(x) = 2 × sec(x) × sec(x)tan(x)

= 2 × sec²(x) × tan(x)

f'''(x) = 2 × 2 sec²(x) tan(x) tan(x) + 2 sec²(x) × sec²(x)

= 4sec²(x) tan²(x) + 2sec⁴(x)

= 6 sec⁴x - 4 sec² x

We then substitute x with 0, and find the values

f(0) = tan 0 = 0

f'(0) = sec²0 = 1

f''(0) = 2 × sec²(0) × tan(0) = 0

f'''(0) = 6 sec⁴0- 4 sec² 0 = 2

By putting all the values in the Maclaurin series, we get

$f(x) = f(0) + \frac{f^{'}(0)}{1!}\cdot x+ \frac{f^{''}(0)}{2!}\cdot x^{2}+\frac{f^{'''}(0)}{3!}\cdot x^{3}+......$

$f(x) = 0 + \frac{1}{1}\cdot x+ \frac{0}{2}\cdot x^{2}+\frac{2}{6}\cdot x^{3}+......$

$f(x) = x +\frac{1}{3}x^{3}+....$

Therefore, the expansion of tan x at x = 0 is

$f(x) = x +\frac{1}{3}x^{3}+....$ .

8 0

4 years ago