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aniked [119]
3 years ago
12

The relationship between the number of hours a plumber works and the total work fee she charges is proportional. Her fee for 555

hours of work is \$350$350dollar sign, 350.
Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0

Answer:

b c d

Step-by-step explanation:

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The gypsy moth is a serious threat to oak and aspen trees. A state agriculture department places traps throughout the state to d
Artemon [7]

Answer:

Mean = 0.4

Stand deviation = 0.08944

Step-by-step explanation:

1.

This question tells us that the mean of trapped moths is only 0.4

Therefore the mean = E(X) = 0.4

2.

The standard deviation of the sample mean is

= σ/√n

σ = 0.6

n = 45

When we put these values into the formula we will have:

0.6/√45

= 0.6/6.708

= 0.08944

So in conclusion, the mean is 0.4 and the standard deviation is 0.08944.

Thank you!

8 0
3 years ago
Please help to solve. ASAP​
chubhunter [2.5K]

Answer:

i think it's 46 miles

Step-by-step explanation:

8 0
3 years ago
Can someone help please?<br> A) 4cm<br> B) 21cm<br> C)13.2cm<br> D)10.7cm
kolezko [41]
Sin θ = \frac{opp}{hyp}

If θ = 51° ; opp = QR ; hyp = 17 cm

Then sin 51° = \frac{QR}{17cm}

              ⇒  QR  = (sin 51°) (17 cm)
                           = 13.21 cm

           ∴ the answer is OPTION C
3 0
3 years ago
Use the subtraction property of equality to complete this statement. If y = 3 and 8x + y = 12, then
Over [174]
8x + y = 12 (substitute 3 for y) 
<span>8x + 3 = 12 </span>
<span>8x = 9 </span>
<span>x = 9/8 </span>

<span>If y = 3 and 8x + y = 12, then x = 9/8.

HOPE THIS HELPS!!</span>
6 0
3 years ago
Read 2 more answers
-9(3z+7) plz help me
Natali5045456 [20]
-9(3z + 7)
distribute -9 to both 3z and 7
-27z - 63

-27z - 63 is your answer

hope this helps
8 0
4 years ago
Read 2 more answers
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