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3 years ago

Show how 89/10 minus 13/4 is solved

Mathematics

1 answer:

svetlana [45]3 years ago

3 0

89/10 would equate to 8 9/10 and 13/4 would be 3 1/4 so 8.9-3.25 equals 5.65

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14 maids share five granola bars equally. Draw to show how much each person gets. Share the amounts that one person gets. Write

Alecsey [184]

first you divide14 and 5 and you get 2.8 then you turn 2.8 into 2 8/10

2 8/10 is your answer

4 0

3 years ago

Somebody help me!

tiny-mole [99]

Answer:

josh vendió 17 libros recaudando 306 dolares .

jessica vendió 255 libros recaudando 4590 dolares.

Step-by-step explanation:

Sustituimos por variables :

libros que vendió Jessica = x

libros que vendió Josh = y

entonces:

x + y = 272

Jessica vendió 15 veces mas libros que josh:

x = 15y

Reemplazamos en la anteriior ecuacion:

15y +y = 272

16y = 272

y = 17

Reemplazamos en la primela ecuacion :

x + 17 = 272

x = 255

7 0

3 years ago

Solve for X<br><br> 2/3x+4=1/2x+5

mote1985 [20]

For this case we must find the value of the variable of the following equation:

$\frac {2} {3} x + 4 = \frac {1} {2} x + 5$

Subtracting $\frac {1} {2} x$ from both sides:

$\frac {2} {3} x- \frac {1} {2} x + 4 = 5\\\frac {4-3} {6} x + 4 = 5\\\frac {1} {6} x + 4 = 5$

Subtracting 4 from both sides:

$\frac {1} {6} {x} = 5-4\\\frac {1} {6} x = 1$

Multiplying by 6 on both sides:

$x = 6 * 1\\x = 6$

Answer:

$x = 6$

5 0

4 years ago

Read 2 more answers

At a certain time of the day, a tree that is x meters tall casts a shadow that is x-49 meters long. If the distance from the top

nikklg [1K]

The height of the tree is 60 meters.

Explanation:

Let the height of the tree be x. The tree casts a shadow of $x-49$ meters and the distance from the top of the tree to the end of the shadow is $x+1$ meters.

The sides of the triangle are attached in the image below:

Using pythagoras theorem,

$x^{2}+(x-49)^{2}=(x+1)^{2}$

Expanding, we get,

$2 x^{2}-98 x+2401=x^{2}+2 x+1$

$2 x^{2}-98 x+2400=x^{2}+2 x$

$2 x^{2}-100 x+2400=x^{2}$

$x^{2}-100 x+2400=0$

Solving the equation using the quadratic formula $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ , we get,

$x=\frac{-(-100)\pm\sqrt{(-100)^{2}-4 \cdot 1 \cdot 2400}}{2 \cdot 1}$

Simplifying, we have,

$x=\frac{100\pm\sqrt{10000-9600}}{2}$

$x=\frac{100\pm\sqrt{400}}{2}$

$x=\frac{100\pm{20}}{2}$

Thus,

$x=\frac{100+20}{2} \\x=\frac{120}{2} \\x=60$ and $x=\frac{100-20}{2} \\x=\frac{80}{2} \\x=40$

where the value $x=40$ is not possible because substituting the value $x=40$ in $x-49$ results in negative solution. Which is not possible.

Hence, the value of x is 60.

Thus, The height of the tree is 60 meters.

7 0

3 years ago

Solve for x. Round to the nearest tenth, if necessary.

Nina [5.8K]

Answer:

15.4 (rounded to 1dp)

Step-by-step explanation:

5 0

3 years ago