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Vaselesa [24]
3 years ago
14

What’s the values of a and b

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
6 0
They’re the coefficients of the unknown numbers
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Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Airida [17]

Answer: 19.6 feet

Step-by-step explanation:

Using the Pythagorean theorem,

x^2 +(x+6)^2 =48^2\\\\x^2 +x^2 +12x+36=2304\\\\2x^2 +12x-2268=0\\\\x^2 +6x-1134=0\\\\x=\frac{-6 \pm \sqrt{6^2 -4(1)(-1134)}}{2(1)}\\\\x \approx 30.8 \text{ } (x > 0)\\\\\implies x+(x+6) \approx 67.6\\\\\therefore (x+(x+6))-48 \approx 19.6

4 0
1 year ago
Simplify each expression using order of operations. (the one that’s circled)
Zepler [3.9K]

Answer:

18

Step-by-step explanation:

1. 6x6=36

2. 8+36=44

3. 44/11=4

4. 7x2=14

5. 4+14=18

5 0
3 years ago
A scientist running an experiment starts with 100 bacteria cells. These bacteria double their population every 15 hours. Find ho
IRISSAK [1]
<h2>Hello!</h2>

The answer is: 23.77 hours

<h2>Why?</h2>

Total(t)=Start*2^\frac{t}{15}

Where:

Total(t) is equal to the amount for a determined time (in hours)

<em>Start</em> is the original amount

<em>t </em>is the time in hours.

For example, it's known from the statement that the bacteria double their population every 15 hours, so it can be written like this:

Total(15)=100*2^\frac{15}{15}=100*2^{1}=100*2=200

To calculate how long it takes for the bacteria cells to increase to 300, we should do the following calculation:

300=100*2^{\frac{t}{15} } } \\\frac{300}{100}=2^{\frac{t}{15} } }\\log(3)=log(2^{\frac{t}{15} })\\\\\\log(3)=\frac{t}{15}*log2\\t=\frac{log(3)}{log(2)} *15=23.77

So, to know if we are right, let's replace 23.77 h in the equation:

Total(t)=100*2^\frac{23.77}{15}=299.94

and 299.94≅300

Have a nice day!

8 0
3 years ago
Read 2 more answers
Label the place value of 987,164.302
VladimirAG [237]
Hundred thousandths
5 0
3 years ago
Can someone give me the answer for this please and thank you!:)
Reil [10]

Answer:

8 more dorr prizes

Step-by-step explanation:

1/25×100

=8

7 0
2 years ago
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