Six is subtracted from a number. The result is divided by four. This result is added to 10 to give 30. What is the number?

Question 10 options:

a)

4

b)

80

c)

16

d)

86

Question 11 (5 points)
Machine A can produce 435 widgets in 3 hours. At this rate, how many widgets can Machine A produce in 7 hours?

Question 11 options:

a)

3045

b)

21

c)

1015

d)

186

D and C

Step-by-step explanation:

Question 10: 86 - 6 = 80

80 ÷ 4 = 20

20 + 10 = 30

Question 11: 435 ÷ 3 = 145

145 x 7 = 1015

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: