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Dennis_Churaev [7]
3 years ago
15

Please help me true or false image has the problem. help me quickly ​

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0
Step by step the answer to this problem is true
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sara is building a cabinet and she needs the corners to form a right angle. the dimensions of the cabinet are 4 feet by 2 feet.
Xelga [282]
Use the pythagoras theorem:-

diagonal  = sqrt(2^2 + 4^2) = sqrt 20 =  4.47 feet to nearest hundredth.
4 0
4 years ago
PLZ HELP (will give brainlest) i think thats how u spell it idk
timama [110]

Answer:

Y are you making us do the test question you should have been payin attention in class

Step-by-step explanation:

7 0
3 years ago
Find the determinancof the matrix Q.
stepan [7]

Using a Laplace expansion along the first column, we have

\det Q=2\det\begin{bmatrix}2&1\\-1&6\end{bmatrix}+3\det\begin{bmatrix}3&4\\-1&6\end{bmatrix}+5\det\begin{bmatrix}3&4\\2&1\end{bmatrix}

The determinant of a 2x2 matrix is trivial,

\det\begin{bmatrix}a&b\\c&d\end{bmatrix}=ad-bc

So we have

\det Q=2\cdot13+3\cdot22+5\cdot(-5)=67

5 0
4 years ago
5 squirrels were found to have an average weight of 8.9 ounces with a sample standard deviation is 0.9. Find the 95% confidence
stira [4]

Answer: ( 8.11 , 9.69)

the 95% confidence interval of the true mean weight

= ( 8.11 , 9.69)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 8.9

Standard deviation r = 0.9

Number of samples n = 5

Confidence interval = 95%

z(at 95% confidence) = 1.96

Substituting the values we have;

8.9+/-1.96(0.9/√5)

8.9+/-1.96(0.4025)

8.9+/- 0.79

= ( 8.11 , 9.69)

Therefore at 95% confidence interval (a,b) = ( 8.11 , 9.69)

7 0
3 years ago
I NEED help with this please!!
Yakvenalex [24]

Answer:Line E

Step-by-step explanation:

The equation is in the form of y=mx+b. M stands for slope and b is y-intercept. The y intercept is 4 and the only one with a positive y intercept is Line E. To check our answer we can see that the slope is positive which means the line is ascending(eliminating line t) and is greater than 1 which means that it is steeper than the line y=x(eliminating line p)

6 0
3 years ago
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