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3 years ago

Third grade 1 - 4/7 =?

Mathematics

2 answers:

Hitman42 [59]3 years ago

4 0

Answer:

3/7

0.4285714286

VMariaS [17]3 years ago

3 0

Answer: 3/7

Step-by-step explanation:

1 is basically 7/7, so subtract the numerators and (in this case 7-4) which is 3. so, your answer is 3/7

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Find the value of sin 0<br>cos(90°- 0) + cos 0 sin(90°-0)

Step2247 [10]

Step-by-step explanation:

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4 years ago

How many pounds does 64 ounces weigh?

wel

Answer:

4 lbs

Step-by-step explanation:

There are 16 ounces in a pound, so divide 64 by 16 to get the number of pounds. 64 ÷ 16 = 4 lbs

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3 years ago

Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !

victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

$2x^2+18x=20$

$x^2+9x=\frac{20}{2}$

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$ax^2+bx+c=0$

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

$D=b^2-4ac=(9)^2-4(1)(-10)=121$

$x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1$

$x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)$

The solution of the given quadratic equation is 1 and (-10).

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3 years ago

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telo118 [61]

Answer:

The answer is A :)

Step-by-step explanation:

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Step-by-step explanation:

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