Decompose the number 80

miv72 [106K]

Answer:

24

Step-by-step explanation:

Its the first model in purple. There are 6 students that represent a quarter of the class, so there is 6*4 = 24 students total.

5 0

3 years ago

Read 2 more answers

Which of the following words help define the national Identity of the United States? Select all that apply.

VikaD [51]

Education and diversity because they both help people

8 0

2 years ago

Read 2 more answers

Help me answer this question the picture is linked below. I will be reporting spam answers/one's with no effort put in.

Brums [2.3K]

Answer:

I think this is right? The instructions seem a bit vague to me...

Condition A: Many

Condition B: One

Condition C: One

Condition D: Many

Condition E: Many

Condition F: One

Step-by-step explanation:

So Condition A: A rectangle with 4 right angles is going to be in many quadrilaterals because squares are also a rectangle with 4 right angles. So condition A has 2 or maybe more that I forgot about.

Condition B: A square with one side measuring 5 inches is one quadrilateral. Squares are one specific type of quadrilateral so they're probably going to go into one quadrilateral

Condition C: A rhombus can sometimes also be a square, but since in this case, it's angle is only 43°, it should be one quadrilateral.

Condition D: There are a lot of parallelograms. Just because one angle is 32°, it doesn't mean there is just one. There are rhombuses and trapezoids that have 32° angles that would be parallelograms. This one is many.

Condition E: This one was hard for me to visualize, but I'm pretty sure this one is also many. There are at least 2. One side could be 6 inches and another could be 8 inches and then, it could be vice versa, so there are probably more than one. This one is many.

Condition F: Is this even possible? I think it's one.

6 0

2 years ago

The size of a television is the length of the diagonal of its screen in inches. The aspect ratio of the screens of older televis

Shalnov [3]

Answer:

The width and height of the old 35-inch television are 28 inches and 21 inches, respectively.

Step-by-step explanation:

35-inch television is a television whose screen has an hypotenuse ( $l$ ) of 35 inches and the aspect ratio of 4 : 3 means that 4 inches width per each 3 inches height. And by Pythagorean Theorem:

$r_{l} =\sqrt{r_{w}^{2}+r_{h}^{2}}$

Where:

$r_{l}$ - Hypotenuse rate, dimensionless.

$r_{w}$ - Width rate, dimensionless.

$r_{h}$ - Height rate, dimensionless.

If $r_{w} = 4\,in$ and $r_{h} = 3\,in$ , the hypotenuse rate is:

$r_{l} = \sqrt{4^{2}+3^{2}}$

$r_{l} = 5$

The width and height of the old television can be found with the help of trigonometric functions:

Width of 35-inch old television ( $w$ )

$w = l\cdot \cos \theta$

$w = l\times\left(\frac{r_{w}}{r_{l}} \right)$

Height of 35-inch old television ( $h$ )

$h = l\cdot \sin \theta$

$h = l\times\left(\frac{r_{h}}{r_{l}} \right)$

Where $\theta$ is the direction of the hypotenuse with respect to width, measured in sexagesimal degrees.

If $r_{w} = 4$ , $r_{h} = 3$ and $r_{l} = 5$ and $l = 35\,in$ , the width and height of the old 35-inch television:

$w = (35\,in)\times \left(\frac{4}{5} \right)$

$w = 28\,in$

$h =(35\,in)\times \left(\frac{3}{5} \right)$

$h = 21\,in$

The width and height of the old 35-inch television are 28 inches and 21 inches, respectively.

3 0

3 years ago

The lengths of the sides of a triangle are 10, 13, and 19. classify the triangle as acute, right, or obtuse.

Vaselesa [24]

If c²=a²+b², it is a right triangle.
if c²<a²+b², it is a acute triangle.
if c²>a²+b², it is a obtuse triangle.
in this case, 19²=361, 10²+13²=269. 19²>10²+13², so it is an obtuse triangle.

5 0

3 years ago