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zhannawk [14.2K]
2 years ago
13

Use the following image to complete the sentances describing the ratio of spots to eyes there are blank spots for every 2 eyes

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
3 0

Answer:

The answer is actually 6 spots for every 2 eyes, and 3 spots for every one eye.

Step-by-step explanation:

If you look at the 2 eyes you should have gotten an idea of 3x2=6 and for the second one your idea should have been 1x3=3.

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Which row operation will trangularize this matrix?
Nadya [2.5K]

\left[\begin{array}{ccc}1&0&1\\0&0&1\\2&0&1\end{array}\right|\left\begin{array}{ccc}1\\6\\10\end{array}\right] \xrightarrow{-2R_1+R_3}\left[\begin{array}{ccc}1&0&1\\0&0&1\\0&0&-1\end{array}\right|\left\begin{array}{ccc}1\\6\\8\end{array}\right]\\\\Answer:\ C.\ -2R_1+R_3

8 0
2 years ago
Read 2 more answers
What is the value of y
kari74 [83]

Answer:

y= -6

Step-by-step explanation:

-2y - 5y= -7y

-7y=42

42/-7=

y= -6

5 0
2 years ago
(w - 3)2 = -5w - 4 + 9w<br><br>​
alukav5142 [94]

Answer:

-1

Step-by-step explanation:

4 0
2 years ago
6. use the distributive property to simplify. -3(x - 10) + x
Roman55 [17]

Answer:

for 6: -2x+30

I dont know for # 8

Step-by-step explanation:

to distribute, you have to multiply -3 by x and -10.

-3(x) - -3(10) + x =

-3x + 30 + x:

then you have to add common terms

-3x + x = -2x

then replace that in your equation to get:

-2x +30

4 0
2 years ago
The difference of two sample means is 22, and the standard deviation of the difference of the sample means is 10. The difference
taurus [48]

Answer:

The 95% confidence interval for the difference of the two populations means is ( 2.4, 41.6)

Step-by-step explanation:

Confidence intervals are usually constructed using the formula;

point estimate ± margin of error

In this question we are required to construct a 95% confidence interval for the difference of two populations means. The point estimate for the difference of two population means is the difference of their sample means which in this case is 22.

Assuming normality conditions are met, since we have no information on the sample sizes, the margin of error will be calculated as;

margin of error = z-score for 95% confidence * standard deviation of the difference of the sample means

The z-score associated with a 95% confidence interval is 1.96

The standard deviation of the difference of the sample means is given as 10

The 95% confidence interval for the difference of the two populations means is thus;

22 ± 1.96(10) = 22 ± 19.6 = ( 2.4, 41.6)

8 0
3 years ago
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