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3 years ago

How do you change 14/20 into a decimal

Mathematics

2 answers:

myrzilka [38]3 years ago

8 0

Divide 14 by 20, so the answer would be 0.7.

lyudmila [28]3 years ago

4 0

The answer is 0.7 Have a nice day

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6.15 divided by 31 rounded

nikdorinn [45]

It would be (rounded) 5
Because
31 / 6.15 = 5.04065

Hope this helped

Have a great day/night

7 0

3 years ago

Two wrongs and One right: vertical angles. Please help only 2-3 questions

luda_lava [24]

Answer:

Solution one is correct and solution 2 and 3 are incorrect

Step-by-step explanation:

You simply make an equation because for vertical angles 2 angles that are across from each other have the same value (in this case 2x+30 and 5x-36.)

The equation: 2x+30=5x-36---->3x=66----> x=22

Solution 1 is correct.

Hope this helped!

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3 years ago

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In a triangle ABC, measure of angle B is 90 degrees. AB is 3x-2 units and BC is x+3. If the area of the triangle is 17 sq cm, fo

Scorpion4ik [409]

Answer:

$x=\frac{8}{3}\ cm$

Step-by-step explanation:

we know that

The area of the right triangle ABC is equal to

$A=\frac{1}{2}(AB)(BC)$

we have

$A=17\ cm^2$

$AB=(3x-2)\ cm$

$BC=(x+3)\ cm$

substitute the values

$17=\frac{1}{2}(3x-2)(x+3)$

$34=(3x-2)(x+3)$

$34=3x^2+9x-2x-6$

$3x^2+7x-6-34=0$

$3x^2+7x-40=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^2+7x-40=0$

$a=3\\b=7\\c=-40$

substitute in the formula

$x=\frac{-7(+/-)\sqrt{7^{2}-4(3)(-40)}} {2(3)}$

$x=\frac{-7(+/-)\sqrt{529}} {6}$

$x=\frac{-7(+/-)23} {6}$

$x=\frac{-7(+)23} {6}=\frac{16}{6}=\frac{8}{3}$

$x=\frac{-7(-)23} {6}=-5$

therefore

The solution is

$x=\frac{8}{3}\ cm$

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3 years ago

Solve the inequality. Graph the solution set on a number line. <br> P+5>-3 and p+1<4

fomenos

Answer: -8< P <3

Step-by-step explanation:

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3 years ago

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AleksandrR [38]

Answer:

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Step-by-step explanation:

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3 years ago

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