All categories

2 years ago

Which expression is equivalent to 64 – 9x^2?

Mathematics

1 answer:

Rzqust [24]2 years ago

6 0

Answer:

Option C is correct

Step-by-step explanation:

A = 64 - 9x^2

= 8^2 - (3^2)(x^2)

= 8^2 - (3x)^2

Hope this helps!

You might be interested in

Geometry help, it’s easy!!!!!

-BARSIC- [3]

Answer:

Step-by-step explanation:

all you do is divide 10.2 by tan (67) and you get 4.33

3 0

2 years ago

Read 2 more answers

The running back for the Bulldogs football team carried the ball 9 times for a total loss of 20

Ivahew [28]

Yeah the answer is 16.

And could I get brainiest because I need to get it one more time to get to my next rank

3 0

2 years ago

How can i solve this ?

ExtremeBDS [4]

Answer: X > 100

Step-by-step explanation:

X - 19 < 81

Once the less than sign is turned over

X > 81 +19

X > 100

Thus, the value of X must be greater than 100

6 0

2 years ago

Estimate 1 13 cos(x2) dx 0 using the Trapezoidal Rule and the Midpoint Rule, each with n = 4. (Round your answers to six decimal

babunello [35]

Answer:

(a) 4.152698

(b) 3.215557

Step-by-step explanation:

(a)

$\int\limits^{13}_1 {cos(x^2)} \, dx =M_n=$\sum_{n=1}^{\infty} f(m_i)\Delta x $$

n=4, so :

Each subinterval has length :

$\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3$

Therefore the subintervals consist of:

$[1,5], [5,9], [9,13]$

Now, the midpoints of these subintervals are:

$\frac{1+5}{2} =3\\\\\frac{5+9}{2} =7\\\\\frac{9+13}{2} =11$

Hence:

$M_4= 3*(cos(3^2))+3*(cos(7^2))+3*cos((11^2))\approx 4.152698$

(b)

$\int\limits^{13}_1 {cos(x^2)} \, dx =T_n=\frac{\Delta x}{2} (f(x_o)+2f(x_1)+2f(x_2)+...+2f(x_n_-_1)+f(x_n))$

n=4, so :

Each subinterval has length :

$\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3$

Therefore the subintervals consist of:

[1,5], [5,9], [9,13]

The endpoints of the subintervals consist of:

5,9

Hence:

$T_4= \frac{3}{2}(cos(1^2)+2*cos(5^2)+2*cos(9^2)+cos(13^2)) \approx 3.215557$

8 0

2 years ago

Im really bad at negative numbers someone please help!

kakasveta [241]

Answer:

26, 18, -1, -25

Step-by-step explanation:

for easier understanding just draw a number line with integers for easier clarification.

... -5, -4, -3, -2, -1, 0, 1, 2 , 3 , 4 ...

6 0

2 years ago

Read 2 more answers