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77julia77 [94]
3 years ago
6

write an expression that can be used to find 4 times 275 using mental math and properties of numbers.

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
6 0
Rough estimate:  4 times 300 = 1200

Properties of numbers:  4 times (300-25) = 4 times 300 - 4 times 25
                                                                   =         1200   - 100
                                                                   =               1100 (exact answer)
sashaice [31]3 years ago
4 0
(200×4) + (70×4) + (5×4)
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kolezko [41]
P(G) is 26/52
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6 0
2 years ago
Convert 5π∕6 radians to degrees. Question 1 options: A) 25° B) 150° C) 150π° D) 1080°
Fiesta28 [93]

Step-by-step explanation:

Hi there!

Given;

= 5(π\6)

We have;

π = 180°

Keeping value of π in the question;

= 5(180°/6)

= 5*30°

= 150°

Therefore, answer is option B.

<u>Hop</u><u>e</u><u> </u><u>it </u><u>helps</u><u>!</u>

3 0
3 years ago
Factor 2x2 + 7x + 3. <br> (2x + 2)(x + 1) <br> (2x + 3)(x + 1) (2x + 1)(x + 3)
maks197457 [2]
<h3>Answer:</h3>

(2x + 1)(x + 3)

<h3>Step-by-step explanation:</h3>

It is probably easier to try the answer choices than to try to factor the expression yourself.

(2x + 2)(x + 1) = 2x² +4x +2

(2x + 3)(x + 1) = 2x² +5x +3

(2x + 1)(x + 3) = 2x² +7x +3 . . . . . correct choice

_____

<em>Constructed solution</em>

If you want to factor this yourself, you can look for factors of "ac" that add to give "b". That is, you want factors of 2·3 = 6 that add up to give 7. You don't have to look very far.

... 6 = 1·6 = 2·3 . . . . . . the first factor pair adds to give 7

Now, rewrite the x term using the sum of these numbers.

... 2x² +(1 +6)x +3

... 2x +x +6x +3 . . . . eliminate parentheses

... (2x +x) +(6x +3) . . . . group pairs of terms

... x(2x +1) +3(2x +1) . . . . factor each pair

... (x +3)(2x +1) . . . . . . matches the last selection

6 0
2 years ago
4xy-28x = 16 work and answer please
algol [13]
Lol do your own work. Pay attention in class, it'll pay off ;)
6 0
3 years ago
What is the constant proportionality for y=2/3x
Lerok [7]
The constant proportionality is 2/3 because it will still be going on
for example- 2/3+2/3= 2/3*2

The number 2/3 goes 
3 0
2 years ago
Read 2 more answers
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