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Ainat [17]
3 years ago
12

The sum of two numbers is 52. The greater number is 4 more than the smaller number. Which equation can be used to solve for the

smaller number?
Mathematics
1 answer:
Gnesinka [82]3 years ago
5 0
One option for the final answer is 30 and 22...
I think I would use the second answer that you provided
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Last year, the mean running time for a certain type of light bulb was 8.5 hours. This year, the manufacturer has introduced a ch
Free_Kalibri [48]

Answer:

H0 : μ = 8.5

H1 : μ > 8.5

1 sample t test ;

Test statistic = 2.53

Pvalue = 0.994

No, we fail to reject the Null ;

There is no significant evidence to support the Claim that the mean running time of light bulb is greater Tha last year.

Step-by-step explanation:

H0 : μ = 8.5

H1 : μ > 8.5

Test statistic :

(xbar - μ) ÷ (s/sqrt(n))

(8.7 - 8.5) ÷ (0.5 / sqrt40)

Test statistic = 2.53

The Pvalue :

P(Z < 2.53) = 0.9943

Pvalue = 0.994

Decison region :

Reject H0 ; if Pvalue < α

0.9943 > 0.05 ; We fail to reject the Null

5 0
3 years ago
Please help....And please show steps..
MrRissso [65]

Answer:

1476:1845

Step-by-step explanation:

4+5=9

4÷9 ×3321

And

5÷9=3321

1476:1845

4 0
3 years ago
Find the equation of the line parallel to y=2x+6 passing through (4,5)
ozzi

Answer:

y=2x-3

when two lines are parallel, they have the same slope.

in the formula y=mx+b, m=slope of the line

we know 2 will be the slope for the line passing through (4,5)

next plug in (4,5) into the formula with 2 as the slope

4=x 5=y

next 5=2(4)+b

and you end up with

y=2x-3 when you simplify

3 0
3 years ago
Step by step method on how to solve the problem. Please and thanks a lot in advance♥️!!!!
nevsk [136]

see attached picture

answer is (x-2)

6 0
3 years ago
HIII PLEASE HELP ITS 6 GRADE MATHS LOLL
klio [65]

Answer:

-5, -7, -4, -6, -10

Step-by-step explanation:

Hope this helps!

8 0
3 years ago
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