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babunello [35]
3 years ago
9

How many real number solutions does this equation have

a1" title="-7x^2+6x+3=0" alt="-7x^2+6x+3=0" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
garik1379 [7]3 years ago
8 0

Answer:

None

Step-by-step explanation:

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Write a quadratic function with two real zeros.
satela [25.4K]
The formula for quadratic equation is given by:

 x² - (sum)x + (product) = 0

so if we have real roots of 3 and 5 

<span> x² - (3 + 5)x + (3*5) = 0
</span> x² - 8<span>x + 15 = 0
</span>
so if we have real roots of -3 and -6  

<span> x² - (-3 - 6)x + (-2*-6) = 0
</span> x² - (-9<span>x) + 12 = 0
</span> x² + 9<span>x + 12 = 0</span>
5 0
3 years ago
The value of a car depreciates by 35% per year. Work out the current value of a car bought 2 years ago for £20000
Rzqust [24]

First year: the depreciation is (35/100) x 20000 = £7000; now the value of the car is £20000 - £7000 = £13000;

Second year: the depreciation is (35/100) x 13000 = £4550; the current value of the car is £13000 - £4550 = £8450.

6 0
3 years ago
Please explain this to me.
Nutka1998 [239]

Answer:

  • The value of x is 12 units.

Step-by-step explanation:

<u>We know that:</u>

  • Formula: h² = a² + b²

<u>Let's solve using Pythagoras theorem.</u>

  • => 13² = 5² + x²
  • => 169 = 25 + x²
  • => 169 - 25 = x²
  • => 144 = x²
  • => √x² = √144
  • => x = √144
  • => x = 12

Hence, the value of x is 12 units.

3 0
2 years ago
Express 1 cm3 in m3 please help ​
Oksana_A [137]

Answer:

1E-6 m^3 or 0.000001 m^3

Step-by-step explanation:

1cm^3 = 1cm*1cm*1cm

1m^3 = 100cm*100cm*100cm = 1000000 cm^3

1/1000000 = 1E-6 m^3

Leave a like and mark brainliest if this helped

Leave a like and mark brainliest if this helped

7 0
2 years ago
Kilometers Walked for Charity
masha68 [24]

Answer:what’s the lowest value?

what’s the highest value?

there is your range

Step-by-step explanation:

3 0
2 years ago
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