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bija089 [108]
3 years ago
8

The sum of the squares of the digits of a positive two-digit number is 20, and the tens digit is 2 more than the units digit. fi

nd the number.
Mathematics
1 answer:
NISA [10]3 years ago
6 0
The numbers are 2 and 4
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Which of the following lines goes downwards from left to right?
Delicious77 [7]
"Goes downwards from left to right" is basically saying that the slope of this line is negative. We go downhill from left to right. 

y = 2x+5 has a positive slope because m = 2 is the slope (b = 5 is the y intercept)
So choice A is out

Similarly choice B is eliminated as well because the slope is also m = 2

Choice C is false as well. The slope here is m = 2 (think of y = 2x as y = 2x+0)

The only choice with a negative slope is choice D. The slope is m = -2 

This is why the answer is choice D

Side Note: I'm using slope intercept form y = mx+b where m is the slope and b is the y intercept
3 0
3 years ago
In 2011, The New York Yankees won 97 out of 162 of their baseball games. Is there sufficient evidence that the proportion of win
Cloud [144]

Answer: It is sufficient evidence that it will reject the null hypothesis.

Step-by-step explanation:

Since we have given that

Number of players of baseball games = 162

Number of games won = 97

So, \hat{p}=\dfrac{97}{162}=0.5988

Hypothesis:

H_0:p\leq 0.5\\\\H_a:p>0.5

So, test statistic would be

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.5988-0.5}{\sqrt\dfrac{0.5\times 0.5}{162}}}\\\\z=2.514

And the p-value = 0.006 at z=2.514.

Since p-value < α = 0.10 significance level.

Hence, it is sufficient evidence that it will reject the null hypothesis.

7 0
3 years ago
X/3+9=17 simplify your answer
frosja888 [35]
I think the answer might be x=24
8 0
3 years ago
Can y’all help me i don’t get it
rusak2 [61]

Answer:

empty spaces in order from left to right are 16,12,42

Step-by-step explanation:

because your adding one to the 5 so you add one to the 15 then your × by 12 bc 3×12 is 36 and × by 12 on the top so 6×12 then last one ur adding 6 because 12+6 is 18 and what ever you do to the top or bottom you do the the bottom or top

5 0
3 years ago
I need ASAP 7r - 6 = 14
Svetlanka [38]

Answer:

r=\frac{20}{7}

7 0
3 years ago
Read 2 more answers
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