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Vsevolod [243]
2 years ago
15

Would like to know how to do this problem.

Mathematics
1 answer:
bogdanovich [222]2 years ago
8 0

well it would be very helpful thank you

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a jar has 170 coins. there are 50 more pennies than nickels. twice as many quarters as nickels. what are the coins?
Amanda [17]
80 pennies 30 nickels and 60 quarters

3 0
3 years ago
Which equation shows the quadratic formula used correctly to solve 5x2 + 3x – 4 = 0 for x?
vovikov84 [41]

Answer:

x=\frac{-3\pm\sqrt{(3)^2-4(5)(-4)}}{2(5)}

Therefore, Option 1 is correct.

Step-by-step explanation:

We have been given the quadratic equation:

5x^2+3x-4=0

If we compare it will general quadratic equation which is: ax^2+bx+c=0

Here, a=5,b=3 and c= -4.

Now, we will use the formula:

And then x=\frac{-b\pm\sqrt{D}}{2a}

Where,D=b^2-4ac

x=\frac{-3\pm\sqrt{(3)^2-4(5)(-4)}}{2(5)}

Therefore, Option 1 is correct.

6 0
3 years ago
Read 2 more answers
A lock has a code of 4 numbers between 1 and 20. If no numbers in the
son4ous [18]
20x19x18x17 = 116,280
4 0
3 years ago
HELP ME PLS I WILL GIVE YOU THE BRAINEST
Fiesta28 [93]

Answer:

The first term should be positive

She did not distribute the -4 properly

She added \frac{2}{7} to negative -4 instead of multiplying

Step-by-step explanation:

In order to tell where she is wrong we should solve the question our selves. we are going to get the following......

-4(-3x + \frac{2}{7})= -4(-3x) +  (-4)(\frac{2}{7} )= 12x - \frac{8}{7}

So now we see that the three things she did wrong are.

The first term should be positive

She did not distribute the -4 properly

She added \frac{2}{7} to negative -4 instead of multiplying

Hope this helps :)

7 0
3 years ago
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What is 62500000 in standard form
8090 [49]
<span>Not included first digit (6), there are 7 digits so 

62 500 000 = 6.25×10^7</span>
5 0
3 years ago
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