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oksano4ka [1.4K]
2 years ago
9

For ssc

Mathematics
1 answer:
Inga [223]2 years ago
4 0

Answer:

Average speed is 3 kilometers an hour

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ale4655 [162]

Answer: 20. 4, 3, 2, 1...

21. 17....

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If you are heading off to college discuss who will be paying for it, where you will live, what your intended major will be, and
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Answer:I think it’s telling you to discuss this stuff with your family, idt this is a question I can really answer

Step-by-step explanation:

8 0
3 years ago
Can i please get some (help on my maths)
quester [9]
ax^2+bx+c=0\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}


We\ have:\\\\15x^2+7x-12=0\\\\a=15;\ b=7;\ c=-12\\\\substitute\\\\x_1=\dfrac{-7-\sqrt{7^2-4\cdot15\cdot(-12)}}{2\cdot15}=\dfrac{-7-\sqrt{49-5(15)(-12)}}{30}\\\\x_2=\dfrac{-7+\sqrt{49-4(15)(-12)}}{30}

First option.
5 0
3 years ago
I WANT SOLUTION AND EXPLANATION ANSWER IS GIVEN AT LAST!!!
Pavel [41]
<h3><u>Question:</u></h3>

The present ages of Ram and Rehman are in the ratio 8:9. After 5 years, the ratio of their ages will be 9:10. Find their present ages.

<h3><u>Statement:</u></h3>

The present ages of Ram and Rehman are in the ratio 8:9. After 5 years, the ratio of their ages will be 9:10.

<h3><u>Solution:</u></h3>
  • Let the present age of Ram and Rehman be 8x years and 9x years respectively.
  • After 5 years, their ages will be 9x years and 10 years respectively.
  • Therefore, by the problem

\frac{8x + 5}{9x + 5}  =  \frac{9}{10}  \\  =  > 10(8x + 5) = 9(9x + 5) \\  =  > 80x + 50 = 81x + 45 \\  =  > 50 - 45 = 81x - 80x \\  =  > x = 5

  • So, the present age of Ram = 8x years = (8×5) years = 40 years
  • The present age of Rehman = 9x years = (9×5) years = 45 years
<h3><u>Answer:</u></h3>

The present ages of Ram and Rehman are 40 years and 45 years respectively.

3 0
2 years ago
the price of silver has increased by 15% per year from 2000. in the year 2000, harry bought a silver bowl for $190. which of the
lesya [120]
<h2>Answer</h2>

f(x) = 190(1.15)x

<h2>Explanation</h2>

To solve this, we are going to use the standard exponential function:

f(x)=a(1+b)^x

Where

f(x) is the final price after x years

a is the initial price

b is the rate in decimal form

x is the time in years

We know from our problem that the initial price is $190, so a=190. Now to convert the rate, 15%, to decimal form, we are going to divide it by 100%, so r=\frac{15}{100} =0.15. Let's replace the values:

f(x)=a(1+b)^x

f(x)=190(1+0.15)^x

f(x)=190(1.15)^x

8 0
3 years ago
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