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creativ13 [48]
3 years ago
14

Dave ran 10km in 40 minutes. He rested for 5 minutes then ran a further 8 km in 35 minutes.Work out his average speed for the wh

ole journey. (Give your answer in km/h)
Mathematics
1 answer:
Nadya [2.5K]3 years ago
5 0

Answer:

27/2 km/hr

Step-by-step explanation:

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-2=2+v over 4<br><br> Answer choices<br> A) -12<br> B) 12<br> C) -16<br> D) 16
svetlana [45]

Answer:

c

Step-by-step explanation:

negative and positive make a negative so it cant be 16 it has to be -16

4 0
3 years ago
Read 2 more answers
The length of a bridge is 230 m. The length of each of Robert's paces is 75 cm.
wariber [46]

Answer:

307 paces

Step-by-step explanation:

First, lets convert Robert's pace to metres. (cm > m)

75cm = (75/100)m

= 0.75m

Number of Full Paces = Length of Bridge / 1 Full Pace

=

\frac{230m}{0.75m}  \\  = 306 \frac{2}{3} paces

See , we must have full paces, and in this case we are finding the minimum number of paces, so we will be looking at the lowest possible whole number, which in this case, is 307 paces.

5 0
2 years ago
6th grade math help me pleaseee
Lostsunrise [7]

Answer:

12.30 x 6 = 73.8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
1 2 2 4 3 9 4 16 what is the range of the function please help
Ivahew [28]

Answer:

<h2 />

Step-by-step explanation:

x            y

1            2

2           4

3           9

4           16

This sounds like a quadratic equation of f(x)=x^2, thus, the range is:

<h3>R(x): (-∞,+∞)</h3><h3 /><h3>If the function only has these points, then the range is:</h3><h3>R(x): [2]∪[4]∪[9]∪[16]</h3>
3 0
3 years ago
How many moles of hydrogen, H2, are needed to react with 2.0 moles of nitrogen, N2
Ber [7]
The coefficients DO NOT represent mass. Moles to mole ratios in a balanced chemical reaction are equivalents. Example 1: 3 H2 (g) + N2 (g) → 2 NH3 (g) tells us that 1 mole of nitrogen will stoichiometrically react with 3 moles of hydrogen to theoretically (ideally) produce 2 moles of ammonia.
6 0
3 years ago
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