All categories

3 years ago

What’s the answer I’m really stuck and homework due today

Mathematics

1 answer:

iVinArrow [24]3 years ago

8 0

Step-by-step explanation:

what is to be done ? just that addition ?

first, let's all bring to pure fractions.

7 2/3 = (7×3 + 2)/3 = 23/3

2 1/5 = (2×5 + 1)/5 = 11/5

then let's bring all to a common denominator (bottom part of the fraction).

for this, we need to find the first (or any) common multiple of the 2 denominators (here 3 and 5).

if you have no other idea, just multiply them with each other (in our case here this is also the smallest common multiple) : 3×5 = 15.

so, we bring both fractions into the form of .../15. then it is easy to add them.

23/3 = x/15

x = 23/3 × 15 = 23×15/3 = 23×5 = 115

23/3 = 115/15

11/5 = x/15

x = 11/5 × 15 = 11×15/5 = 11×3 = 33

11/5 = 33/15

now the addition :

115/15 + 33/15 = 148/15 or 9 13/15

this is the result, as it cannot be further simplified.

You might be interested in

Solve for y with the equation: <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D%20%3Dy-6" id="TexFormula1" title="\frac{x

Elodia [21]

Answer:

all work is shown and pictured

5 0

3 years ago

Find the surface area of a right triangle prism with legs measuring 3 and 4 and a height of 10.

Hunter-Best [27]

Since we have a rectangle triangle, then we can find the other side of the triangle using the Pythagorean theorem.
We have then:
$L = \sqrt{3^2+4^2}$
$L = \sqrt{9+16}$
$L = \sqrt{25}$
$L = 5$
Then the surface area is given by the sum of the areas.
Triangle of the base and the top:
$A1 = (1/2) * (4) * (3)

A1 = 6$
Rectangle 1:
$A2 = (3) * (10)

A2 = 30$
Rectangle 2:
$A3 = (4) * (10)

A3 = 40$
Rectangle 3:
$A4 = (5) * (10)

A4 = 50$
Finally, the surface area is:
$A = 2A1 + A2 + A3 + A4
$
Substituting values:
$A = 2 * (6) + 30 + 40 + 50

A = 132$
Answer:
The surface area of a right triangle prism is:
B. 132

6 0

3 years ago

For 14a-14d,tell you which expressions require you to rename mixed numbers before you can subtract.Find each difference .write e

Vlada [557]

multiply the whole number with the denominator then add the numerator over the denominator then find the common multiple.

6 0

3 years ago

Pleasee helppp fastt

Phoenix [80]

Not sure if this is how your teacher wants it, but here is how I would approach it in high school geometry:

To find the area of a rectangle, you need the base and the height.

The radius is 28 mm however the radius only covers half of one circle. Multiply 28 by 2 to get the length of one circle (56) and multiply 56 by 2 to get the length of your base of your rectangle (112).

Now to find the height: the center of the circles creates an equilateral triangle with the side length of 2r or 56 in this case. This means each angle of that triangle is 60 degrees, and when split in half, this creates two triangles both with angles of 30, 60, and 90. The altitude of this triangle is r√3 because of the “special right triangle rule” or 28√3 in this case. This comes to 48.497 mm. To find the remaining length of the height, you can use the radii of the top and bottom circle which add to 56. Add this to the previous number. So...

Height: 104.497
Base: 112

Now multiply the base times height to get:

216.497 mm.

Hope that helps!

6 0

4 years ago

Estimate using compatible numbers. Show the numbers used. 1286÷ 32

Sindrei [870]

Answer:

41 big boy thats ur answer

Step-by-step explanation:

7 0

3 years ago