Shau-uen solve the equation 18.5w+6.5w-2.8w=149.1 her work is shown below step(1) 18.5w+6.5w-2.8w= 149.10 step(2) 25w-2.8w= 149.1 step(3) -2.8w=5.964 step(4) w= -2.13 in which step did shaun make her first error? a. step 1 b. step 2 c. step 3 d. step 4

Shaun make her first error in step 3. Answer C

Step-by-step explanation:

If have the same units you can simply add them, Like this:

Step (1)

18.5w+6.5w-2.8w= 149.10 (everything in the left side is in terms of w)

Step(2)  

25w-2.8w= 149.1 (add 18.5+6.5)

Step(3)

Here you have to add the terms of w

(25-2.8)w=149.1

22.2w=149.1

Step(4)

Here you  clear w

w=149.1/22.2

w=6.72

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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