All categories

3 years ago

Please Help 28 Points + Brainlest Look At The Image Below And Answer The Flowing Question

Mathematics

2 answers:

loris [4]3 years ago

8 0

Answer:

Step-by-step explanation:

alexira [117]3 years ago

6 0

Answer:

It is D

Step-by-step explanation:

You might be interested in

The Great Pyramid of Cheops is a square-based pyramid. The base has sides of 230m, and the height is 147m.

Alex_Xolod [135]

Answer:

height = 140.875m

Step-by-step explanation:

Volume of first pyramid= base * height /3 = 230*147/3= 11270

if the base is 240, volume is remain -> height = volume *3 /base

= 11270*3/240 =140.875m

5 0

3 years ago

Solve the following system by the substitution method <br> 0.1x + 0.8y = - 5.1 , 0.4x- 0.9y = 8.3

Sav [38]

I hope you can read cursive! And I hope this helps! (:

6 0

3 years ago

Please answer these question!! thank you!! :)

Aleks [24]

this made me realize how dumb I am

6 0

3 years ago

Do u guys now what the answer to m + 4 = -12 is lol

kari74 [83]

Answer:

m=-16

Step-by-step explanation:

-12-4=-16

-16+4=-12

7 0

4 years ago

Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.)

Luda [366]

Answer:

$a.b = (1*0) + (-4*2) +(1*-2)= -10$

And replacing we got:

$cos \theta = \frac{-10}{\sqrt{18} \sqrt{8}}= -\frac{10}{\sqrt{144}}= -\frac{10}{12}= -\frac{5}{6}$

And we can find the angle with the inverse cosine function and we got:

$\theta =cos^{-1} (-\frac{5}{6})= 146.44°$

Step-by-step explanation:

for this case we can use the following identity:

$cos \theta = \frac{a.b}{|a| |b|}$

We can begin finding the norm for each vector and we got:

$|a| =\sqrt{(1)^2 +(-4)^2 +(1)^2}= \sqrt{18}$

$|b| =\sqrt{(0)^2 +(2)^2 +(-2)^2}= \sqrt{8}$

Now we can find the dot product and we got:

$a.b = (1*0) + (-4*2) +(1*-2)= -10$

And replacing we got:

$cos \theta = \frac{-10}{\sqrt{18} \sqrt{8}}= -\frac{10}{\sqrt{144}}= -\frac{10}{12}= -\frac{5}{6}$

And we can find the angle with the inverse cosine function and we got:

$\theta =cos^{-1} (-\frac{5}{6})= 146.44°$

5 0

3 years ago