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charle [14.2K]
3 years ago
11

2/3 as a decimal plssss help

Mathematics
2 answers:
laila [671]3 years ago
6 0

Answer:

2/3 = 0.66666...

Step-by-step explanation:

Veseljchak [2.6K]3 years ago
5 0

Answer:

0.66666667

Step-by-step explanation:

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I really need help with this coin problem
Katena32 [7]

Answer:

There are 17 quarters and 15 half dollars.

Step-by-step explanation:

Let the number of half dollars be x,

number of quarters = x + 2

amount of half dollars = 0.5x

amount of quarters = 0.25(x + 2)

= 0.25x + 0.5

total amount = 0.5x + 0.25x + 0.5

= 0.75x + 0.5

0.75x + 0.5 = 11.75

0.75x = 11.25

x = 15

number of quarters = x + 2

= 15 + 2

= 17

There are 17 quarters and 15 half dollars.

4 0
3 years ago
Solve l 3x-7 l = 2
Lelechka [254]

Answer:

1) Solutions are x = 3 and x = 5/3

2) Solution are x ≤ 13/2 and  x ≤ -3/2

Step-by-step explanation:

1) Given absolute inequality,

|3x-7| = 2

⇒ 3x - 7 = ± 2

⇒ 3x = 7 ± 2

\implies x=\frac{7\pm 2}{3}

x=\frac{7+2}{3}\text{ or }x=\frac{7-2}{3}

\implies x = 3\text{ or }x=\frac{5}{3}

2) l 2x-5 l ≤ 8

⇒  2x-5  ≤ ±8

⇒   2x ≤ 5 ± 8

\implies x\leq \frac{5\pm 8}{2}

x\leq \frac{5+8}{2}\text{ or }x\leq \frac{5-8}{2}

\implies x \leq \frac{13}{2}\text{ or }x\leq-\frac{3}{2}

8 0
3 years ago
Read 2 more answers
What is the formula for ANOVA
Sergio039 [100]
P = 3
n = 5
N = 15
<span><span><span>x </span><span>¯ </span></span> </span> = 16
<span><span>SST</span> </span>  = <span><span>∑n(x−<span><span>x </span><span>¯ </span></span><span><span>) </span><span>2 </span></span></span> </span>
<span><span>SST</span> </span> = <span><span>5(12−16<span><span>) </span><span>2 </span></span>+5(16−16<span><span>) </span><span>2 </span></span>+11(20−16<span><span>) </span><span>2 </span></span></span> </span>
= 160
<span><span>MST</span> </span> = <span><span><span><span>SST</span><span>p−1</span> </span> </span> </span>
<span><span>MST</span> </span> = <span><span><span>160<span>3−1</span> </span> </span> </span>
= 80
<span><span>SSE</span> </span> = <span><span>∑(n−1)<span><span>S </span><span>2 </span></span></span> </span>
SSE = 4*4 + 4*1 + 4*16
= 84
<span><span>MSE</span> </span> = <span><span><span><span>SSE</span><span>N−p</span> </span> </span> </span>
<span><span>MSE</span> </span> = <span><span><span>84<span>15−3</span> </span> </span> </span>
MSE = 7
<span>F </span> = <span><span><span><span>MST</span><span>MSE</span> </span> </span> </span>
<span>F </span> = <span><span><span>807 </span> </span> </span>
= 11.429
 

8 0
3 years ago
Solve simultaneously <br> 3x + 4y = 2 and 4x - y = 9
Contact [7]

Answer:

x=2

y= -1

Step-by-step explanation:

3 0
3 years ago
What is the slope of the line with equation y=-5x
harina [27]
An equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

In this case, our y-intercept is 0, so we're left with y = -5x.

-5 is in the place of m, which means -5 is our slope.


The slope of y = -5x is -5.
3 0
3 years ago
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