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2 years ago

Please help asap!!!!!!!!!!

Mathematics

1 answer:

worty [1.4K]2 years ago

4 0

Answer:

(4t)

Step-by-step explanation:

Hope this helps

5 is the exponent

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Solve the equation by using the quadratic formula.<br> 3 x squared minus 1 = 7 x

Paladinen [302]

Answer:

b. $\frac{7+\sqrt{61} }{6} ,\frac{7-\sqrt{61} }{6}$

Step-by-step explanation:

$3x^{2} -1=7x$

Quadratic equations are suppose to be written as: $ax^2+bx+c=0$

so the new quadratic equation for this problem will be: $3x^{2} -1-7x=0$

Now rearrange the terms: $3x^{2} -7x-1=0$

Then use the Quadratic Formula to Solve for the Quadratic Equation

Quadratic Formula = $x=\frac{-b±}{} \frac{\sqrt{b^2-4ac} }{2a}$

Note: Ignore the A in the quadratic formula

Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula.

$3x^{2} -7x-1=0$

a = 3

b = -7

c = -1

$x=-(-7)±\frac{\sqrt{(-7)^2-4(3)(-1)} }{2(3)}$

Evaluate The Exponent

$x=\frac{7±\sqrt{(49)-4(3)(-1)} }{2(3)}$

Multiply The Numbers

$x=\frac{7±\sqrt{49+12} }{2(3)}$

Add The Numbers

$x=\frac{7±\sqrt{61} }{2(3)}$

Multiply The Numbers

$x=\frac{7±\sqrt{61} }{6}$

4 0

3 years ago

Two families are vacationing together, driving in separate cars. The Harris family averages 40 mph, leaving Hometown 12 minutes

andrey2020 [161]

I believe, if I'm not correct but I think the answer would be 8 minutes or less.. Considering the fact that the Harris Family left 12 minutes ahead and the Arlen family is Averaging 55 MPH.. Too the speed that the Arlen's are going make the time for them to catch up to the harris's shorter. The Arlen's are going 15 mph faster sooo.. Yeah.. Tell em if this helps! :D

8 0

3 years ago

Read 2 more answers

A store sold 32 pairs of jeans for a total of $1050. Brand A sold for $30 per pair and Brand B sold for $35 per pair. How many o

stich3 [128]

Answer:

There are 14 pairs of Brand A sold.

Step-by-step explanation:

In order to find this, you need to set up a system of equations. You can set up on equation for the number sold:

A + B = 32

And you can set up one for the amount made:

30A + 35B = 1090

Now, in order to solve for the amount of A sold, multiply the first equation by -35 and add the two equations together.

-35A - 35B = -1120

30A + 35B = 1050

----------------------------

-5A = -70

A = 14

5 0

3 years ago

What are the coordinates of the midpoint of the segment with the given endpoints

BARSIC [14]

Huh I don’t understand your question at all

4 0

3 years ago

Please help me! I struggle with Ag class. I'll give Brainlest if I know how.

Butoxors [25]

Answer:

Her answer is incorrect

We have the correct feet number (5) but the incorrect inches number (should be 3 inches and not 1/4 inches)

Step-by-step explanation:

Here, we want to make a conversion from feet to inches and feet

Mathematically, we know that;

1 feet = 12 inches

So, for 63 inches, we can have a clear ;

63/12 = 5 feet + 3 inches

Hence, the correct conversion of 63 feet should be;

5 feet and 3 inches

4 0

3 years ago