2 years ago

30 POINTS

Mathematics

2 answers:

MAXImum [283]2 years ago

7 0

Answer:

12 minutes 40 seconds

Step-by-step explanation:

One keychain, 1 minutes 35 second = 1*60 + 35 = 95 seconds

8 keychains, 95 * 8 = 760 seconds = 760/60 = 12.66667 minutes

= 12 minutes 0.66667*60 seconds

= 12 minutes 40 seconds

butalik [34]2 years ago

5 0

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Please I need help with this question.<br>No 22. Is very important.<br>Thank you.

kvv77 [185]

Answer:

C. $132m^3$

Step-by-step explanation:

Height = 4

Length = 6

Breadth = 7

Note : We were asked to find volume of the cuboid

Since, it has a base in the shape of a right angle triangle , we need to find the Area of the trapezium before calculating the total volume.

Step 1

Find the area of the trapezium

Area of a trapezium = $\frac{1}{2} (a+b)h$

$\frac{1}{2} (4+7)*4$

$\frac{1}{2} (11)4\\$

$\frac{1}{2} *44\\= 22$

Step 2

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In this case , the volume will be our length × Area of a trapezium

V= 6 × 22

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3 years ago

Victor has a bag of dimes and quarters. He has a total of 36 coins worth $5.40.

nata0808 [166]

Answer:

{x+y=36

0.1x+0.25y=5.4

Step-by-step explanation:

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3 years ago

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laila [671]

You can apply the Pythagorean theorem:
a^2 + b^2 = c^2
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2 years ago

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Ulleksa [173]

Answer: x = 18

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago