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Naily [24]
3 years ago
6

Help plz......................

Mathematics
2 answers:
zmey [24]3 years ago
7 0

Answer:

It's A, She didn't multiply 4 into 13

Step-by-step explanation:


stira [4]3 years ago
5 0

Answer:

a)

Step-by-step explanation:

She forgot to multiply 14 with -13

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TSolve the system of equations below by graphing. What is the solution rounded to the nearest tenth? (–1.1, 3.2) (0.2, 2.8) (0.7
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4y-4=_____<br> 4(y+1)=___<br> 2+4y=____
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If they are looking to have them all simplified, this is how they should look. 

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3 years ago
What is the perimeter of this square?
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We need the square and the lengths of it to help you
8 0
3 years ago
Standard deviation of 300, 785, 670, 187, 760, 724
White raven [17]
STEP 1

Mean = \frac{300+785+670+187+760+724}{6} = \frac{3426}{6}=571

STEP 2

Subtract the mean from each data value then square the answer
300-571=-271 ⇒ (-271)^{2} =73441
785-571=214 ⇒ (214)^{2}=45796
670-571=99 ⇒ (99)^{2}=9801
187-571=-384 ⇒ (-384)^{2} =147456
760-571=189 ⇒ 189^{2}=35721
724-571=153 ⇒ 153^{2} =23409

STEP 3

Add the squared answers in STEP 2 then find the mean

\frac{73441+45796+9801+147456+35721+23409}{6}= \frac{335624}{6}=55937.3

STEP 4

Square root the answer in STEP 3
\sqrt{55937.3} =236.5

Standard deviation is 236.5
 
7 0
3 years ago
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