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LuckyWell [14K]
2 years ago
5

" 7. Mr Gerry’s class has 19 students Ms Vernon’s class has 21 students and Mr Singh’s class has 23 students Whose class has a c

omposite number of students

Mathematics
1 answer:
BlackZzzverrR [31]2 years ago
6 0
Mr. Vernon's class (21 is divisible by 7 and three and thus is composite).

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In ΔABC, and m∠ABC = 90°. D and E are the midpoints of and , respectively. If the length of is 9 units, the length of is units a
jok3333 [9.3K]
This is an isosceles right triangle (AB = BC & ∠ B=90° - Given)
Then the angles at the base are equal and ∠ CAB = ∠ ACB = 45°

Theorem: Segment DE, joining the midpoints of 2 sides is:
1st) parallel to the 3rd side and
2nd) equal to half the measurement of the 3rd side
So if the 3rd side (hypotenuse) = 9 units, DE = 9/2 = 4.5 units
3 0
2 years ago
A cylindrical rainwater tank is 1.5 m tall with a diameter of 1.4 m. What is the maximum volume of rainwater it can hold??
Ket [755]

To work out the volume of a prism, you multiply the area of cross-section by the height (or length).

So for a cylinder, you work out the area of the circle and then multiply it by the height.

Area of circle (or cross-section) = π × radius²

                                                = π × 0.7²

                                                = 0.49π   m²

Now to get the volume of the cylinder, you times this area of the cross-section by the height of the cylinder:

Volume = 0.49π × 1.5

            = 2.3 m³  (accurate to 2 decimal places)

---------------------------------------------------------------

Answer:

The maximum volume of rainwater the cylinder can hold is:

<u> </u><u>2.3 </u><u>m³</u>

7 0
2 years ago
Fred and George ate 23 apples in July, 46 apples in August, 69 apples in September, and 92 apples in October. If this trend cont
VARVARA [1.3K]
The answer is 115

The sequence of the total apples look like this:

23 _ 46 _ 69_92_X

In which x is the total amount of apples eaten in the october.

From the sequence above we can see that each months gred and george consume additional of 23 apples

proof:
46 - 23 = 23
69 - 46 = 23
92 - 69 = 23

So, the amount of apples they will eat in November is:
92 + 23 = 115



4 0
2 years ago
Find the measure of missing angle
Bas_tet [7]

Answer:

58 degrees

Step-by-step explanation:

90 - 32 = 58

3 0
2 years ago
an original piece of art work is 3 feet by 2.5 feet. a reprint of the artwork is 6 inches by 5 inches. are the pieces similar? i
RoseWind [281]
For this case we observe that the dimensions of the original piece are:
 3 feet
 2.5 feet
 Let's multiply these dimensions by a scale factor k:
 3 * k
 2.5 * k
 We match the new dimensions with their respective values:
 3 * k = 6
 2.5 * k = 5
 Clearing k we have:
 k = 6/3 = 2
 k = 5 / 2.5 = 2
 Since the value of k is the same, then the pieces are similar.
 Answer:
 
The pieces are similar.
 
The ratio of their corresponding side lengths is: 
 
k = 2
3 0
2 years ago
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