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Harrizon [31]
3 years ago
5

What two number that are the same have the product of 0.2 and the quotient of 0.8

Mathematics
2 answers:
rosijanka [135]3 years ago
4 0
AxB = 0.2
A/B = 0.8

The easiest way is to get the factors of 0.2 and divide the smaller one by the bigger one until you get 0.8

0.1 and 2
0.2 and 1
0.3 doesn’t work
0.4 and 0.5 is the last one

0.4x0.5 = 0.2
And
0.4/0.5 = 0.8

So the two numbers are 0.4 and 0.5
Pie3 years ago
3 0
Let the numbers be a and b, then ab=0.2 and a/b=0.8, so a=0.8b. Therefore, 0.8b^2=0.2 and b^2=0.2/0.8=2/8=1/4 and b=+1/2 or +0.5 and a=+0.8*0.5=+<span>0.4. The two numbers are therefore 0.5 and 0.4 or -0.5 and -0.4. The quotient is 0.4/0.5</span>
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Evaluate the function.<br><br> f(x) = x² - 4x – 12<br><br> Find f(-7)
pashok25 [27]

Answer:

Your answer is 65

Step-by-step explanation:

f(x) = x² - 4x - 12

f(-7) = (-7)² - 4 x (-7) - 12

= 49 - (-28) - 12

= 49 + 28 - 12

= 77 - 12

= <u>65</u>

7 0
1 year ago
It is known that the point P(-9,18) belongs to the graph of the function y=k/x. Find k.
riadik2000 [5.3K]

Answer:

k = (-162).

Step-by-step explanation:

A point of the form (x_{0},\, y_{0}) belongs to the graph of this function, y = k / x, if and only if the equation of this function holds after substituting in x = x_{0} and y = y_{0}.

The question states that the point (-9,\, 18) belongs to the graph of this function. Thus, the equation of this function, y = k / x, should hold after substituting in x = (-9) and y = 18:

y = k / x.

18 = k / (-9).

Solve this equation for the constant k:

\begin{aligned}k &= 18 \times (-9) \\ &= (-162)\end{aligned}.

Thus, k = (-162).

6 0
2 years ago
D − 21.4 = 87 . Help! What is D?
Vesnalui [34]

Answer:

108.4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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