Ask question

Ask question

All categories

4 years ago

12

which are the partial products for 89 times 25? choose all answers that are correct. a. 9 times 2 =18 b. 8 times 5= 40 c.9 times

5=45 d. 80 times 20= 1,600

1 answer:

Aloiza [94]4 years ago

8 0

<span>C .9 times 5=45 Is the correct answer

</span><span>89 x 20=1780 89 x 5 = 445 80 x 20 = 1600 9 x 20 = 180 80 x 5 = 400 9 x 5</span>

You might be interested in

To verify the identity tan (x1+x2+x3) = tan x1 + tan x2 + tan x3 - tan x1 tan x2 tan x3 / 1 - tan x1 tan x2 - tan x2 tan x3

andrezito [222]

Answer:

The answer is the last one

$tan(x_{1}+x_{2}+x_{3})=\frac{tanx_{1}+tan(x_{2}+x_{3})}{1-tanx_{1}tan(x_{2}+x_{3})}$

Step-by-step explanation:

∵ $tan(x_{1}+x_{2}+x_{3}=\frac{tanx_{1}+tan(x_{2}+x_{3})}{1-tanx_{1}tan(x_{2}+x_{3})}$

$=\frac{tanx_{1}+\frac{tanx_{2}+tanx_{3}}{1-tanx_{2}tanx_{3}} }{1-tanx_{1}(\frac{tanx_{2}+tanx_{3}}{1-tanx_{2}tanx_{3}})}$

Multiply up and down by $1-tanx_{2}tanx_{3}$

$\frac{tanx_{1}(1-tanx_{2}tanx_{3})+tanx_{2}+tanx_{3}}{1-tanx_{2}tanx_{3}-tanx_{1}tanx_{2}-tanx_{1}tanx_{3}}$

$=\frac{tanx_{1}+tanx_{2}+tanx_{3}-tanx_{1}tanx_{2}tanx_{3}}{1-tanx_{1}tanx_{2}-tanx_{2}tanx_{3}-tanx_{1}tanx_{3}}$

7 0

3 years ago

Read 2 more answers

The surface area of a triangular pyramid is 2304 cm2. If all the faces of the pyramid are congruent, what is the area of one fac

siniylev [52]

Okay! So to start this problem, we need to look at the given information a little closer to make sure we have everything we need! This is a triangular pyramid, meaning that it has a total of 4 sides, which are all congruent triangles, meaning they all have the same surface area! We are also given the total surface area, which is 2304 cm^2.

If we need to find out how big one of the sides are, we should just have to divide the total surface area by 4, because there are 4 sides with the same surface area! 2304/4 = 576 cm^2, so your answer should be A) 576 cm2!

8 0

4 years ago

What is x (its a parralleligram)

creativ13 [48]

Check the picture below.

7 0

3 years ago

Abe is going to plant 5454 oak trees and 2727 pine trees. Abe would like to plant the trees in rows that all have the same numbe

xxTIMURxx [149]

You would need to find the GCF of 54 and 27.

Factors of 54: 1, 2, 3, 6, 9, 18, <u>27</u>, 54

Factors of 27: 1, 3, 9, <u>27</u>

so, the GCF is 27

6 0

3 years ago

Is .962 greater than or less than 2.42

shutvik [7]

The answer is: less than

8 0

3 years ago

Read 2 more answers