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3 years ago

In the number sentence 278-159=119. which number is the difference

2 answers:

8 0

Rewriting 278-159=119, we get 159 + 119 = 278. The first term is 159. If we add 119 once, we get 278; if we add 119 again, we get 397; and so on. This is an arithmetic sequence.

AleksandrR [38]3 years ago

8 0

The difference would be 119.

Hope helps-Aparri

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3 years ago

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3 years ago

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4 years ago

Please help!! In radians, what is the period of the function y = .5cos5x

Levart [38]

Answer:

(2pi)/5

Step-by-step explanation:

The cosine function cos(x) has a period of 2*pi.

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5x = 2*pi

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3 years ago

Joe and Mary each pay the same price for a T-shirt. Before they buy it, Mary has $\$ 2$ more than Joe. To buy the T-shirt, Joe s

kozerog [31]

Let Joe initially have J dollars, and Mary have M dollars. Let the price of the T-shirt be T dollars.

i) "Before they buy it, Mary has 2$ more than Joe":

means M=J+2

ii)

"To buy the T-shirt, Joe spends 1 $ less than \frac{2}{5} of his money"

so $T= \frac{2}{5}J-1$

iii)

"Mary spends \frac{1}{3} of her money"

means $T= \frac{1}{3}M$

equalize equations ii) and iii):

$\frac{2}{5}J-1= \frac{1}{3}M$ (they are both equal to T)

substitute M=J+2 from equation i:

$\frac{2}{5}J-1= \frac{1}{3}(J+2)$

$\frac{2J-5}{5}= \frac{J+2}{3}$

$3(2J-5)=5(J+2)$

6J-15=5J+10
J=25

so M=25+2=27 (dollars)

Together Mary and Joe had 27+25=52 (dollars)

Answer: 52 $

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3 years ago