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geniusboy [140]
3 years ago
14

16.(a)Simply3b + 5b - 2​

Mathematics
1 answer:
lakkis [162]3 years ago
3 0

Combine like terms

1. Add 3b and 5b (combine like terms)

2. After adding you are supposed to get 8b

3. The -2 would stay as it is because we can't add it to 8b

4. So the answer would be 8b-2

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Help!! help!! help!! help!! help!! help!! help!! help!! help!!
oksian1 [2.3K]

Answer:

<em>(8.21, -20.79)</em>

Step-by-step explanation:

Given the simultaneous equation;

\frac{a}{b} - \frac{b}{2} = 10\\a - b = 29

From 2;

a = 29 + b ....3

Substitute 3 into 1;

\frac{29+b}{b} - \frac{b}{2}  = 10\\\frac{2(29+b)-b^2}{2b} = 10\\\frac{58+2b-b^2}{2b} = 10\\58+2b-b^2 = 20b\\b^2-2b-58 = -20b\\b^2-2b+20b -58 = 0\\b^2+18b-58 = 0\\

Factorize

b = -18±√18²-4(-58)/2

b = -18±√324+232/2

b = -18±√556/2

b = -18±23.58/2

b = -18-23.58/2 and -18+23.58/2

b = -41.58/2 and 5.58/2

b = -20.79 and 2.79

Since a = 29 + b

when b = -20.79

a = 29 - 20.79

a = 8.21

<em>Hence the solution to the system of equation is (8.21, -20.79)</em>

7 0
3 years ago
A home Improvement store advertises 60 ft.² of flooring for 287.00 including an 80.00 installation fee write an equation to repr
anastassius [24]

Answer:

cost = \frac{287}{60} +80

Step-by-step explanation:

So, for 60 square feet they charge = 287

So, for 1 square foot they charge = \frac{287}{60}

If they charge the installation fee this becomes = \frac{287}{60} +80

We can write an equation to calculate cost by using this =\frac{287}{60} x +80

Where x is the amount of square foot

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3 years ago
Please help!! I have 10 minutes left!!
Lelu [443]

1. Answer:

30 is your frequency

Step-by-step explanation:

Frequency in this case would be the number of winners. So to find the frequency we would need to add up the total number of winners in the histogram.

So, 0 + 2 + 5 + 6 + 8 + 5 + 4 = 30

2. Answer:

6 (you already put that)

3.

The median can be found in the 50-59 bin or interval.

5 0
2 years ago
The value of coin A is twice the value of coin B. Together, the total value of the two coins is $27.00 What is the value of each
elena-14-01-66 [18.8K]

Answer:

27÷2=$13.50

Step-by-step explanation:

Easy

5 0
3 years ago
One gram of water has a volume of 1 millimeter. What is the volume of the water if it has a mass of 1 kilogram
Zinaida [17]
There are 1,000 grams in a kilogram. 
Each gram of water has a volume of 1 milliliter (the question said millimeter but that measures length and I think it was meant to say milliliter). 
Since there are 1,000 grams with a volume of 1 millimeter each, the volume is 1,000 milliliters, which is equal to 1 liter. 
Hope this helps!

8 0
3 years ago
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