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3 years ago

Type the correct answer in each box.

Mathematics

1 answer:

serg [7]3 years ago

7 0

7 and the other one is 29

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Jenny is 12 years older than Nancy. Five years ago Jenny was three times as old as Nancy. How old is each now?

mote1985 [20]

Answer:

Jenny = 23 | Nancy = 11

Step-by-step explanation:

8 0

4 years ago

What is the area of the figure? A. 36 cm2 B. 26 cm C. 15 cm D. 42 cm2

irina1246 [14]

D. 42 cm2 is the answer

Area is measured in square units such as square inches, square feet or square meters. To find the area of a rectangle, multiply the length by the width. The formula is: A = L * W where A is the area, L is the length, W is the width, and * means multiply.

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3 years ago

The box plots below show student grades on the most recent exam compared to overall grades in the class:

Sergeu [11.5K]

Answer:

Step-by-step explanation:

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2 years ago

Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal

Nikolay [14]

Answer:

0.0359

Step-by-step explanation:

Data provided:

mean values of three independent times are 15, 30, and 20 minutes

the standard deviations are 2, 1, and 1.6 minutes

Now,

New Mean = 15 + 30 + 25 = 65

Variance = ( standard deviation )²

Variance = 2² + 1² + 1.6² = 7.56

therefore,

Standard deviation = √variance

Standard deviation = 2.75

Thus,

Z-value = $\frac{\textup{60 - 65}}{\textup{2.75}}$

Z-value = - 1.81

from the Z-table

the Probability of Z ≤ -1.81 = 0.0359

6 0

3 years ago

Can someone help me do this exercise

zubka84 [21]

The answer is 4 because if area is 28 meaning when you times the base and the height you'll get 28 therefore if you plug in 4 in the spot of x it should be 4+3 which equals 7 and since the value of x is 4 on top it must be 4 on the side too so you must do 7×4 which equals 28

6 0

4 years ago