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3 years ago

What is 13-1 simplifid

Mathematics

1 answer:

DochEvi [55]3 years ago

3 0

<u><em>Sowwy, but it is already in simplist form.. Good job though!</em></u>

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Use the quadratic formula to solve the equation.

elena-14-01-66 [18.8K]

Answer:

$\large\boxed{x=\dfrac{5-\sqrt5}{4},\ x=\dfrac{5+\sqrt5}{4}}$

Step-by-step explanation:

$\text{The quadratic formula for}\ ax^2+bx+c=0\\\\\text{if}\ b^2-4ac$

$\text{We have the equation:}\ 4x^2-10x+5=0\\\\a=4,\ b=-10,\ c=5\\\\b^2-4ac=(-10)^2-4(4)(5)=100-80=20>0\\\\x=\dfrac{-(-10)\pm\sqrt{20}}{2(4)}=\dfrac{10\pm\sqrt{4\cdot5}}{8}=\dfrac{10\pm\sqrt4\cdot\sqrt5}{8}=\dfrac{10\pm2\sqrt5}{8}\\\\=\dfrac{2(5\pm\sqrt5)}{8}=\dfrac{5\pm\sqrt5}{4}$

3 0

4 years ago

Round 8,213 to the nearest thousand

Archy [21]

8000
Hope this helped
:)

3 0

3 years ago

Read 2 more answers

Can anyone help me with this please ?

zlopas [31]

$\displaystyle \bf\\
 \frac{x}{20} = \frac{14}{25} \\ \\ \\ 
x = \frac{14 \cdot 20}{25} = \frac{280}{25} = 11,2 \sim \boxed{10} ~~\text{(rounded to the nearest tenth)}$

7 0

3 years ago

What is 62 1/2% as a decimal?

babymother [125]

Answer:

62.50 or 0.625

Step-by-step explanation:

7 0

3 years ago

Daniella has $210 in the bank, and her balance is growing at a rate of $3 each month. Lori has $187 in the bank,but her balance

just olya [345]

Answer: 15 1/3 months

Step-by-step explanation:

Daniella has $210 in the bank, and her balance grows at a rate of $3 each month. This can be written as:

b = 3m + 210 ...... equation i

Lori has $187 in the bank and her balance grows at a rate of $4.50 each month. This can be written as:

b = 4.5m + 187 ....... equation ii

Combine both equations

b = 3m + 210

b = 4.5m + 187

3m + 210 = 4.5m + 187

4.5m - 3m = 210 - 187

1.5m = 23

m = 23/1.5

m = 15 1/3 months

4 0

3 years ago