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ELEN [110]
3 years ago
10

Easy Question Topic: Volume Focus on question 10

Mathematics
2 answers:
gayaneshka [121]3 years ago
7 0

Answer:

120 cm^3;70 cm^3

Step-by-step explanation:

Volume = l * w * h

That means...

a) Volume = 12cm * 2cm * 5cm = 120 cm^3

b) Volume = 2.5cm * 8cm * 3.5cm = 70 cm^3

vovangra [49]3 years ago
4 0

Answer:

a 120 cm^3

b 70 cm^3

Step-by-step explanation:

The volume of a right rectangular prism is given by

V = l*w*h

10 a  V = 12*2*5

          =120 cm^3

10 b V = 2.5 *8 *3.5

           =70 cm^3

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Which powers have of value of 81.<br> Possible Answers: 1^81, 3^4, 6^4, 9^2, 27^3.
quester [9]

1^81, 9^2, 3^4. the others are rather to high or to low

4 0
2 years ago
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Exponents and roots are what operations
dalvyx [7]

Answer:

An exponent

Step-by-step explanation: So if we have 83, we want to multiply three 8s, or 8 * 8 * 8. A root is basically the opposite. We're trying to find the number that we multiply by itself a certain number of times to get the number under the radical sign.

8 0
3 years ago
1. Rotate ABC 180° about the origin making<br> DEF.<br><br> List all congruent sides and angles:
Vedmedyk [2.9K]

Answer:

<h3>              ∠ABC≅∠DEF </h3><h3>              ∠BCA≅∠EFD </h3><h3>              ∠CAB≅∠FDE </h3><h3>           AB≅DE,  BC≅EF,  CA≅FD</h3>

Step-by-step explanation:

To rotate point A 180° about the origin (point O) we draw a line from that point (A) throu the origin, measure the distance from the point A to the origin, and then measure the same distance on the other side of the origin to get rotated point. Mark it. The angle at the rotated point will be congruent to ∠A

The same goes for points B and C

Angles at pair of given and rotated point are congruent.

Sides of triangle are congruent if they lay between two congruent angles.

6 0
2 years ago
There are a total of 84 students in the robotics club and the science club. The science club has 12 more students than the robot
Dafna11 [192]

Answer:

48 students in science

Step-by-step explanation:

Let r = students in robots club

s = students in science club

r+s = 84

s = r+12

Substitute the second equation into the first

r+(r+12) = 84

Combine like terms

2r+12 = 84

Subtract 12 from each side

2r = 84-12

2r = 72

Divide by 2

r = 72/2 = 36

We need to find s

s = r+12

s = 36+12

s = 48

There are 48 students in the science club

4 0
2 years ago
Read 2 more answers
Sarah can bicycle a loop around the north part of Lake Washington in 2 hours and 30 minutes. If she could increase her average s
netineya [11]

Answer:

The length of the loop is approximately 49.58 km.

Step-by-step explanation:

Given:

Time required to ride bicycle in loop = 2 hours and 30 mins

Now we know that;

60 mins = 1 hour

30 mins =0.5 hour

so 2 hour and 30 mins = 2+0.5 = 2.5\ hrs

∴ Time required to ride bicycle in loop = 2.5 hrs

Let the speed at which she is riding the bicycle be 's'.

and let Total distance of the loop be 'd'

Now we know that;

Distance is given by speed multiplied by time.

framing in equation form we get;

d =2.5s \ \ \ \ equation \ 1

Now Given:

If she increase the speed by 1 km/hr, it would reduce her time around the loop by 7 minutes.

Hence we can say;

Speed =s+1

Also time will be reduce to 7 mins.

7 mins  =0.12 hrs

Now time = 2.5-0.12 =2.38

Again Distance is given by speed multiplied by time.

framing in equation form we get;

d =2.38(s+1) \ \ \ \ equation \ 2

Now distance is same for both so we will calculate the speed by equating the equations.

2.5s = 2.38(s+1)\\\\2.5s=2.38s+2.38\\\\2.5s-2.38s =2.38\\\\0.12s= 2.38\\\\s =\frac{2.38}{0.12} \approx 19.83\ km/hr

Now Speed = 19.83 km/hr

Length of the loop (d) = 19.83\times 2.5 = 49.58 \ km

Hence the length of the loop is approximately 49.58 km.

7 0
3 years ago
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