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taurus [48]
3 years ago
8

Write and solve a system of equations for this question please

Mathematics
1 answer:
andre [41]3 years ago
6 0
Let b and s be the velocity of the boat and stream respectively....

3(b-s)=27

b-s=9

b=9+s  we will use this in the second equation....

2(b+s)=30

b+s=15, now use b found above in this to get:

9+s+s=15

2s+9=15

2s=6

s=3, and since from earlier b-s=9, b=9+s so

b=12

So the speed of the boat is 12mph and the stream is 3 mph
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Katt and sanjeev are collecting money for charity. For every £2 that kat collects, sanjeev collects £3. They collect £255 in tot
il63 [147K]

Answer: Kate = £102

Sanjeev = £153

Step-by-step explanation:

From the question, we are informed that for every £2 that kat collects, sanjeev collects £3. This csn be represented in a fraction as:

Kat = 2/5

Sanjeev = 3/5

The amount that each collects will be:

Kat = 2/5 × £255

= 2 × £51

= £102

Sanjeev = 3/5 × £255

= 3 × £51

= £153

6 0
3 years ago
What is a fact family? (Saying "it's a family of facts" will not be accepted")
Mrac [35]

Answer: Fact families are 3 numbers that make up a set of related math facts

Step-by-step explanation:

.An example of a fact family for multiplication and division is 2, 3, and 6: 2 X 3 = 6, 3 X 2 = 6, 6 2 = 3, and 6 3 = 2.

7 0
2 years ago
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I'm completely lost. I don't know how to start the question. Can you help me ?
BaLLatris [955]
The answer is D 13/28.
8 0
3 years ago
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estimate 0.037854921 to the nearest hundredth express your answer as a single digit times a power of 10
Vilka [71]

To solve this problem you must apply the proccedure shown below:

1. Let's round the value to the nearest hundredth. As you can see, the digit 8 is in the thousandths place and is greater than 5, therefore, you must round up to 0.038.

2. Now express the value as a single digit times a power of 10, as following:

38x10^{-3}

Therefore, the answer is: 38x10^{-3}

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3 years ago
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If a = 17.0079, b = 2.05, and c = 3.1415926, then what is a/b + c?
podryga [215]
A / b + c

17.0079 / 2.05 + 3.1415926 = 
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