2 years ago

Hi i need help with question number 1

Mathematics

1 answer:

tatuchka [14]2 years ago

5 0

I think the second answer is correct. I can’t see the full question but given what you have sin makes the most sense.

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Delvig [45]

-7x^2 - 6x^2 + 3x + 5x - 5 + 2
-13x^2 + 8x - 3

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3 years ago

John has 3 fewer dimes than quarters. He has twice as many nickels as quarters. Altogether he

sweet-ann [11.9K]

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3 years ago

Three out of every ten dentists recommend a certain brand of fluoride toothpaste. Which assignment of random digits would be use

Len [333]

Answer:

Step-by-step explanation:

only b has 10 didgets. it could be a since the didgets aren't very random, but then again, i think it's b

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3 years ago

Carlos is using the quadratic formula to find the solutions of y=3x^2-5x-2. Which of the following will simplify to the correct

Nana76 [90]

Answer:

$Fx=\frac{5\pm\sqrt{25+24} }{6}$

Step-by-step explanation:

A quadratic equation in one variable given by the general expression:

$ax^2+bx+c$

Where:

$a\neq 0$

The roots of this equation can be found using the quadratic formula, which is given by:

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

So:

$y(x)=3x^2-5x-2=0$

As you can see, in this case:

$a=3\\b=-5\\c=-2$

Using the quadratic formula:

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}=\frac{-(-5)\pm\sqrt{(-5)^2-4(3)(-2)} }{2(3)}=\frac{5\pm\sqrt{25+24} }{6}$

Therefore, the answer is:

$Fx=\frac{5\pm\sqrt{25+24} }{6}$

4 0

3 years ago

The value of y varies directly with c. If x = 2, then y = 7. Find the value of x if y = 84.

shtirl [24]

Answer:

x=24

Step-by-step explanation:

y = x*c

x=2, y=7

2*c=7 => c=7/2

x*7/2 = 84

x = 84*2/7

x = 12*2

x = 24

3 0

3 years ago

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