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3 years ago

Why is it important to know the different properties of three-dimensional figures

1 answer:

4 0

A two-dimensional shape has length and width. A three-dimensional solid shape also has depth. Three-dimensional shapes, by their nature, have an inside and an outside, separated by a surface. All physical items, things you can touch, are three-dimensional.

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Please help me on number 4

Mariulka [41]

Angle 5 = 117° because it is vertical to angle 8
Angle 7 = 63° because it is symmetrical to angle 5
Angle 6 = 63° because it is vertical to angle 7.
Angle 1 = 117° because it is corresponding to angle 5.
Angle 2 = 63° because it is corresponding to angle 6.
Angle 3= 117° because it is corresponding to angle 8.
Angle 4 = 63° because it is corresponding to angle 7.

3 0

3 years ago

Mrs. Benson has graded 46 math assignments but has 80% of the assignments left to grade. Mrs. Benson has how many math assignmen

timofeeve [1]

Mrs. Benson has 184 math assignments left to grade.

<u>Step-by-step explanation:</u>

Here we have , Mrs. Benson has graded 46 math assignments but has 80% of the assignments left to grade.We need to find Mrs. Benson has how many math assignments left to grade. Let's find out:

Let total Number of math assignments be x , So According to question 46 math assignments are graded & 80% are left i.e.

⇒ $x = 46+\frac{80x}{100}$

⇒ $x -\frac{80x}{100}= 46$

⇒ $\frac{100x-80x}{100}= 46$

⇒ $\frac{20x}{100}= 46$

⇒ $\frac{x}{5}= 46$

⇒ $x=230$

Now , Assignments left to grade is :

⇒ $230-46$

⇒ $184$

Therefore , Mrs. Benson has 184 math assignments left to grade.

4 0

3 years ago

Determine the values of the letters to complete the conditional relative frequency table by column.

weqwewe [10]

Answer:

$a=0.1\\b=0.85$

Step-by-step explanation:

In this problem we are calculating the relative frequency conditional by columns.

Therefore the sum of the frequencies of each column must be equal to 1.

Then we use this condition to calculate the values of a and b

So:

$0.9 + a = 1\\a = 1-0.9\\a = 0.1$

$b +0.15 = 1\\b = 1-0.15\\b = 0.85$

Finally

$a=0.1\\b=0.85$

3 0

3 years ago

Read 2 more answers

What is a possible value for the missing term of the geometric sequences?

Ganezh [65]

A(n)=ar^(n-1) and we can find the rate upon using the ratio of two points...

50/1250=1250r^2/1250r^0

1/25=r^2

r=1/5 so

a(n)=1250(1/5)^1=250

...

You could have also found the geometric mean which is actually quite efficient too...

The geometric mean is equal to the product of a set of elements raised to the 1/n the power where n is the number of multiplicands...in this case:

gm=(1250*50)^(1/2)=250

8 0

3 years ago

Read 2 more answers

PLEASE HELP MEH I NEED HELP!! Which answer describes the calculations that could be used to solve this problem?

xenn [34]

Answer:

d is the answer cause you are finding the total of it and when you dived and subtract it decrease and when you add and multiply it increase

and that will leave you with an answer of 20

5 0

3 years ago

Read 2 more answers