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3241004551 [841]
3 years ago
15

which statement correctly compares two values? a)the value of the 7 in 37.596 is 1/10 the value of the7 in 26.74 b) the value of

the 7in 37.596 is 10 times the value of the 7 in 26.74 c) the value of the 7 in 37.596 is 1/100 the value of the 7in 26.74 d) the valueof the 7 in 37.596 is 100 times the value of the 7 in 26.74 please explain the reasoing of this answer
Mathematics
1 answer:
Andrews [41]3 years ago
7 0

The value of 7 in 26..74 is 0.7

The value of 7 in 37.596 is 7.

1/10 the value of 7 in 26.74 is 0.07 and 0.07 ≠ 7.

So, statement a) is incorrect.

1/100 the value of 7 in 26.74 is 0.007 and 0.007 ≠ 7.

So, statement c) is incorrect.

100 times the value of 7 in 26.74 is 70 and 70 ≠ 7.

So, statement d) is incorrect.

10 times the value of 7 in 26.74 is 7 and 7 = 7.

So, statement b) is correct and it correctly compares two values.

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5a – 10b = 45, when b = 3
balandron [24]


Well, since you have the value of b, the first thing you want to do is substitute that value in for b.

5a - 10(3) = 45

10*3 = 30

5a - 30 = 45

Now, to get the variable by itself (a) you have to + 30 because you have to reverse the subtraction.

5a = 75

Now, you divide by 5 to finish getting a by itself.

a = 15

Hope this helps!

6 0
3 years ago
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Suppose $x$,$y$, and $z$ form a geometric sequence. if you know that $x+y+z=18$ and $x^2+y^2+z^2=612$, find the value of $y$.
OverLord2011 [107]
Because x,y,z form a geometric sequence,  therefore the common ratio is
r = y/x = z/y
That is,
y² = xz                            (1)

We are given:
x + y + z = 18
Therefore
x + z = 18 - y                 (2)

Also,
x² + y² + z² = 612
Therefore, from (1), obtain
x² + z² + xz = 612 
(x + z)² - xz = 612
From (1) and (2), obtain
(18 - y)² - y² = 612
324 - 36y + y² - y² = 612
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4 0
4 years ago
How many solutions does the system have? \begin{cases} y = -2x-4 \\\\ y = 3x+3 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ y=−2x−4 y=3x+3 ​ How
azamat

Answer:

x = -7/5 y = -6/5

Step-by-step explanation:

System:

y = -2x-4

AND

y= 3x+3

therefore -2x-4 = 3x+3

-2x-3x = 3 + 4

-5x = 7

x = -7/5

y = 3(-7/5) + 3 = -21/5 + 3 = -6/5

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anzhelika [568]

Answer:

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Step-by-step explanation:

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3 years ago
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5. 4
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Answer:

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