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krok68 [10]
1 year ago
9

Which expression is equivalent to 2(3w)?

Mathematics
1 answer:
emmainna [20.7K]1 year ago
5 0
2(w+2w)
I hope that i helped
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Pls help me with this questions​
bazaltina [42]

Step-by-step explanation:

6a

Sn = n/2 [2a + (n-1) d]

(2Sn)/ n = 2a + (n - 1) d

2a + (n-1) d = (2Sn)/n

(n-1) d = (2Sn - 2a)/n

d =  \frac{2sn \:  - 2a}{(n(n - 1))}

d =  \frac{2(sn - a)}{ {n}^{2}  - n}

6b

d =  \frac{2(56 - 25)}{ {32}^{2}  - 32}

d = ¹/16

7a.

E = (mv²)/2 + mgh

E = m( v²/2 + gh)

E/m = v²/2 + gh

E/m - gh = v²/2

2(E/m - gh) = v²

so

v =   \sqrt{2( \frac{e}{m}  - gh)}

7b.

v =   \sqrt{2( \frac{4900}{20}  - 9.8 \times 15)}

v = 14 m/s

6 0
3 years ago
The late fee for libary books is $2 plus 15 cents each day for a book that is late. if monicas late fee is $2.75, write and solv
r-ruslan [8.4K]
2+0.15x=2.75 is the equation 
x=5 (days)


7 0
2 years ago
Write the two statements that create the biconditional: There is traffic on the freeway if and only if there are a lot of cars o
MariettaO [177]

Answer:

there is traffic on the freeway

a lot of cars on the freeway

Step-by-step explanation:

5 0
3 years ago
NO LINKS HELP PLEASE PLEASE EXPLAIN ​
Iteru [2.4K]

Answer:  1,278

Step-by-step explanation: 2(18x18)+2 1/2(18x14)

p.e.m.d.a.s. 18x18= 324       18x14= 252

2x324= 648      2.5x252=630

648+630 =1,278

4 0
2 years ago
What 2 numbers multiply to -147 but add to -14?
Bezzdna [24]
Okay, so let's go over multiplying negative numbers.  A positive times a positive is a positive, right?  But a negative times a negative is also a positive.  Only a negative times a positive (or a positive times a negative) gives you a negative number.  So, we know that one of our 2 numbers in this question must be negative; the other must be positive.

Let's now take a look at the factors of -147, starting with the positives.  Obviously, -147 and 1 are factors: -147 * 1 = -147.  What other factors of -147 are there?

What about 7?  Try it: -147 / 7 = -21.  So here are two factors: -21, and 7.  They multiply to -147.  Do they add up to -14?  Let's see: -21+7 = 7+(-21) = 7-21= -14.  Yup, that works!

Answer: -21 and 7
4 0
3 years ago
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