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irina [24]
3 years ago
15

How to factorize a²-21ab-100b²

Mathematics
1 answer:
Galina-37 [17]3 years ago
8 0
(a-25b)(a+4b)=0
Use the quadratic formula or complete the square by looking at the factors
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Estimate the difference: 3 2/5 - 5/8
svet-max [94.6K]

Answer: 3

Step-by-step explanation: Half of 5 is 2.5 so 3 2/5 will be estimated to a 3 1/2 and 5/8 is very close to 4 which is half of 8. so 5/8 will be estimated to 1/2! Both of them subtracted is gonna be 3 because 1/2 - 1/2 is 0!

Have a great day!

5 0
2 years ago
Joe borrowed $900 from Sam for six months. How much will Sam earn if he charges Joe a simple interest rate of 4 percent?
AleksAgata [21]
Simple interest
you can charge it monthly or yearly

find 4% and multiply by how many months or years
4% of 900=
0.04 times 900=36
that is each time the interst is added

if it is monthly, (6months so ) 6 times 36=216
if it is yearly (6months=1/2year so )6 times 1/2=3


if it is taken monthly, then Sam earns $216
if it is taken yearly, then Sam earns $3
7 0
3 years ago
Read 2 more answers
I, so confused please help me asap!
Tamiku [17]

<u>Quadrilaterals</u> are <em>plane shapes</em> that are <u>bounded</u> by four <u>straight</u> sides. Thus, the required answers to the questions are:

46. True. Other examples include kites, rhombus, etc.

47. False.

46. When a <em>plane shape</em> is <u>bounded</u> by four <u>straight</u> sides of equal or different lengths, it is called a  <u>quadrilateral</u>. Examples include trapezium, kite, rhombus, rectangle, square, etc. Each of these examples has individual <u>properties</u>.

Thus the required answer to question 46 is; <u>True</u>. It can be observed that with respect to their <em>individual properties</em>, other <u>quadrilaterals</u> which have a pair of <em>opposite angles</em> to be <u>equal</u> include: kite, rectangle, rhombus, etc.

47. A <em>ray segment</em> is a given <u>line</u> that <u>points</u> or <u>heads</u> in a specific direction. So that the direction in which the ray moves is very<em> important</em>.

Thus in the given question, the <u>required</u> answer is; False. This is because the<u> two</u> given rays are moving in opposite directions. Though the two rays may have the <u>same</u> length of the <u>segment</u>.

For more clarifications on the properties of quadrilaterals, visit: brainly.com/question/21774206

#SPJ 1

7 0
2 years ago
Word problem pls help!
Aloiza [94]
374÷22= 17 miles hope this help
5 0
3 years ago
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Wes rode his bike 30 miles in 3 hours. What was his average rate of speed? 0.3 mph 10 ​mph​ 30 ​mph​ 90 ​mph​
lidiya [134]

The answer is 10mph because you divide 30 by 3hours. I hope this helps. Could I possibly get brainliest?

3 0
3 years ago
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