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3 years ago

Hich of the following sets of numbers could be the lengths of the sides of a triangle?

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Each side of a triangle has to be shorter than the sum of the other 2. The only possible answer is b: 3,5,7 (7<5+3)

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3) Solve each equation using the quadratic formula. Show a. x2 – 3x – 10 = 0

Naya [18.7K]

Answer:

Step-by-step explanation:

The quadratic formula of a quadratic equation

$ax^2+bx+c=0\\\\\text{If}\ b^2-4ac>0\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{If}\ b^2-4ac=0\ \text{then the equation has one solution}\ x=\dfrac{-b}{2a}$

$\text{If}\ b^2-4ac$

We have:

$x^2-3x-10=0\to a=1,\ b=-3,\ c=-10\\\\b^2-4ac=(-3)^2-4(1)(-10)=9+40=49>0\\\\x=\dfrac{-(-3)\pm\sqrt{49}}{2(1)}=\dfrac{3\pm7}{2}\\\\x=\dfrac{3-7}{2}=\dfrac{-4}{2}=-2\\or\\x=\dfrac{3+7}{2}=\dfrac{10}{2}=5$

5 0

3 years ago

REMOVE the outlier from the data, and then do the following: Round answers to the nearest

tresset_1 [31]

Answer:

outliar is23

Step-by-step explanation:

7 0

3 years ago

A customer placed an order for muffins.The Baker has completed 37.5% of the order after baking 81 muffins. How many muffins did

IceJOKER [234]

81 divided by 37.5 equals 2.16, 2.16 would be equivalent to 1% so to find 100% we simbly multiply 2.16 by 100, 2.16 multiplied by 100 equates to 216, so the Baker is making 216 muffins.

If this is a word problem, put it into your own words in case of getting in trouble.

I hope this helped, have an awesome day!!

(brainliest is always appreciated)

6 0

3 years ago

Nemo rents 5 movies per month when the price is $3.00 per rental and 7 movies per month when the price is $2.50 per rental. nemo

yuradex [85]

The law of supply states that the quantity of a good supplied (i.e., the amount owners or producers offer for sale) rises as the market price rises, and falls as the price falls. Conversely, the law of demand (see demand) says that the quantity of a good demanded falls as the price rises, and vice versa.

6 0

3 years ago

Find the area of this, Simplify your answer completely.

creativ13 [48]

Answer:

$\frac{2}{15} {cm}^{2}$

Step-by-step explanation:

Area of Rectangle = Length x Breadth

$\frac{1}{5} \times \frac{2}{3} \\ = \frac{2}{15} {cm}^{2}$

4 0

2 years ago