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lesya692 [45]
4 years ago
5

Do all parallelograms have reflectional symmetry? explain your reasoning?

Mathematics
1 answer:
shepuryov [24]4 years ago
6 0
Rhombus, rectangle, square these have lines of symmetry. others i am not much sure
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What is the formula for ANOVA
Sergio039 [100]
P = 3
n = 5
N = 15
<span><span><span>x </span><span>¯ </span></span> </span> = 16
<span><span>SST</span> </span>  = <span><span>∑n(x−<span><span>x </span><span>¯ </span></span><span><span>) </span><span>2 </span></span></span> </span>
<span><span>SST</span> </span> = <span><span>5(12−16<span><span>) </span><span>2 </span></span>+5(16−16<span><span>) </span><span>2 </span></span>+11(20−16<span><span>) </span><span>2 </span></span></span> </span>
= 160
<span><span>MST</span> </span> = <span><span><span><span>SST</span><span>p−1</span> </span> </span> </span>
<span><span>MST</span> </span> = <span><span><span>160<span>3−1</span> </span> </span> </span>
= 80
<span><span>SSE</span> </span> = <span><span>∑(n−1)<span><span>S </span><span>2 </span></span></span> </span>
SSE = 4*4 + 4*1 + 4*16
= 84
<span><span>MSE</span> </span> = <span><span><span><span>SSE</span><span>N−p</span> </span> </span> </span>
<span><span>MSE</span> </span> = <span><span><span>84<span>15−3</span> </span> </span> </span>
MSE = 7
<span>F </span> = <span><span><span><span>MST</span><span>MSE</span> </span> </span> </span>
<span>F </span> = <span><span><span>807 </span> </span> </span>
= 11.429
 

8 0
3 years ago
Please help me. I’m not smart.
klio [65]

Answer:

3/4 or 0.75

Step-by-step explanation:

the equation is in slope-intercept form

y=mx+b

where m is the slope and b is the y-intercept.

you have already found the y-intercept to be -2, so now we just have to find the slope.

slope is also known as rise/run. so if we start at the y-intercept of -2, we can rise (go up) 3 units and then run (go over) 4 units until we reach another point on the line.

so the slope is 3/4 which is also equal to 0.75 units

4 0
4 years ago
Sara covers the top of a box with squares of paper that are 1 square centimeter: she uses 48 squares with 6 squares in each row.
scZoUnD [109]

Answer:

Sarah makes 8 rows of squares.

Step-by-step explanation:

Given:

Number of squares she uses = 48

Number of squares in each row = 6

We need to find the number of rows she can makes.

Solution:

Let the number of rows she can make be 'x'.

Now we can say that;

Number of rows she can make is equal to Number of squares she uses divided by number of squares in each row.

framing in equation form we get;

x=\frac{48}{6}=8\ rows

Hence Sarah makes 8 rows of squares.

5 0
3 years ago
Read 2 more answers
Abraham lincoln declared thanksgiving a holiday in 1863 what is the prime factorization of 1863​
kogti [31]

3 x 3 x 3 x 3 x 23 = 1,863. It can also be written in exponential form as 3 to the power of four times 23.

3 0
3 years ago
Read 2 more answers
The sum of two numbers is 67. the smaller number is 3 less than the larger number. what are the two numbers?
V125BC [204]
Let the larger number be x
The smaller number would be x-3 

(x-3)+x=67 
2x-3=67 
2x=67-3 
2x=64 
x=64/2 
x=32 

Therefore the larger number is 32 and the smaller is (32)-3= 29 

Hope I helped :) 
7 0
3 years ago
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