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3 years ago

Is x = 3 1/4 a solution to the equation 12 5/8 = x +9 1/4

Mathematics

1 answer:

navik [9.2K]3 years ago

4 0

x=3 1/4 is not a solution to the equation.

12 5/8=x+9 1/4 Subtract 9 1/4 from each side 3 3/8=x, but 3 1/4=3 2/8

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3) Solve each equation using the quadratic formula. Show<br> 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:

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

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3 years ago

How do you say 0.3 in words

svlad2 [7]

0.3 is 3 tenths in word form. After a decimal, numbers are said as tenths, hundredths, thousandths, and so on.

7 0

3 years ago

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Find the measure of the indicated angle in each triangle

Alecsey [184]

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

⇢∠V + ∠T = ∠x

⇢53° + 103° = 156°

⇢∠VUX = 156°

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Hence , option b is the correct answer.

4 0

2 years ago

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Which expression is equivalent to 3(6m)+m<br> 3<br> 6<br> m<br> +<br> m<br> ?

svetlana [45]

Answer:

some Equivalent expressions to 3(6m)+m is;

18m+m

6(3m)+m

2(9m)+m

19m

Step-by-step explanation:

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3 years ago

If x2 = 30, what is the value of x?

hammer [34]

Answer:

Step-by-step explanation:

15 x 2 = 30

8 0

2 years ago

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