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34kurt
3 years ago
5

I need help please someone

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0
<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>
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Which equations model this problem? A recipe that makes 1 serving calls for 0.1 L of honey. How many servings can Alicia make if
loris [4]
The answer is B. 0.8/0.1 = s

The solution is as follows:
s = honey at hand / honey needed for 1 serving
   = 0.8 L / 0.1 L
   = 8, she can make 8 servings of the recipe

Thank you for posting your question. I hope you found what you were after. Please feel free to ask me more.

<span> </span>



7 0
3 years ago
Fator by grouping ab+2a+5b+10
Alenkasestr [34]
Ab + 2a + 5b + 10

= a(b + 2) + 5(b + 2)

= (b + 2) (a + 5)
3 0
3 years ago
The scale is evenly balanced. Explain how to find the weight (w) of one turtle. 
Tomtit [17]

Answer: 8 units

Step-by-step explanation:

Set this up as an equation with a variable for turtles. Count up the other side of the scale (without turtles). Add up the three 1s and the 4 to get 7. Then add up all four 7s. This will get you with an equation 3t+4=28.

To solve this, first subtract 4 from both sides to get 3t=24. Now divide both sides by 3. 24/3=8. Each turtle weighs 8 units.

6 0
3 years ago
If 3x - 2 = -x + 10, then x =
Kipish [7]

Answer:

3

Step-by-step explanation:

3x-2= -x+10

4x= 12

x=3

5 0
3 years ago
Read 2 more answers
Factor-3/4 out of 3/2x-9/4y
S_A_V [24]

For this case we must factor - \frac {3} {4}of the following expression:

\frac {3} {2} x- \frac {9} {4}y

By law of signs of multiplication it is fulfilled that:

- * - = +\\- * + = -

So we have to:

- \frac {3} {4} * (- 2) = + \frac {6} {4} = + \frac {3} {2}\\- \frac {3} {4} * 3 = - \frac {9} {4}

Thus, by factoring we have:

- \frac {3} {4} (- 2x + 3y)

Answer:

- \frac {3} {4} (- 2x + 3y)

5 0
3 years ago
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