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3 years ago

How do you write inequalities?

Mathematics

2 answers:

uysha [10]3 years ago

8 0

Umm it would depend on the question for example x is greater than 4 it would be x>4

Ronch [10]3 years ago

8 0

Just replace the = sign with <,>, or greater and equal to or less than and equal to signs. Ex. 2x+2= 6 2x+2> 6

You might be interested in

What is the simplified value of the expression below?

Karolina [17]

4(-8+4.5)
-32+18
-14

6.25+(-8.25)
-2

-14/-2

7

The answer is 7.

5 0

3 years ago

Read 2 more answers

The arithmetic series 15+18+21+...+84+87 has how many terms?

bearhunter [10]

We can use the general term of the arithmetic series. Look:

$\mathsf{a_n=a_1+(n-1)\cdot r}$

Where:

$\mathsf{a_1}$ : first term, 15.

$\mathsf{a_n}$ : last term, 87.

n: number of terms (what we looking for);

r: reason, which is equal to the difference between two terms, that is, 3.

Let's go to the calculations.

$\mathsf{a_n=a_1+(n-1)\cdot r}\\\\ \mathsf{87=15+(n-1)\cdot3}\\\\ \mathsf{87-15=(3n-3)}\\\\ \mathsf{72=3n-3}\\\\ \mathsf{72+3=3n}\\\\ \mathsf{75=3n}\\\\ \mathsf{n=\dfrac{75}{3}=25}$

There are 25 terms.

8 0

3 years ago

Read 2 more answers

The volume of a cube is 125 cubic centimeters. A rectangular prsim with three different whole-numbers dimensions has the same vo

pantera1 [17]

Answer:

1 cm , 5 cm, 25 cm

Step-by-step explanation:

125 = 5 x 5 x 5 = 1 x 5 x 25

3 0

4 years ago

Write each of these ratios in their

jek_recluse [69]

Answer:

A) 3:9 => 1:3

B) 12:36 => 1:3

C) 13:39 => 1:3

D) 71:213 => 1:3

E) 142:213 => 2:3

F) 38:57 => 2:3

G) 33:44 => 3:4

H) 31:42 => 31:42 or 21:42 => 1:2

Step-by-step explanation:

The simplest form of the ratios are as follows:

A) 3:9

Dividing the ratio by 3

1:3

B) 12:36

Dividing the ratio by 12

1:3

C)13:39

Dividing the ratio by 13

1:3

D) 71:213

Dividing the ratio by 71

1:3

E) 142:213

Dividing the ratio by 71

2:3

F) 38:57

Dividing the ratio by 19

2:3

G) 33:44

Dividing the ratio by 11

3:4

H) 31:42

The ratio is already in simplest form as 31 and 42 don't have a common multiple.

Or it might be mistakenly typed 31 instead of 21

Then the simplest form will be:

21:42

1:2

Hence,

A) 3:9 => 1:2

B) 12:36 => 1:3

C) 13:39 => 1:3

D) 71:213 => 1:3

E) 142:213 => 2:3

F) 38:57 => 2:3

G) 33:44 => 3:4

H) 31:42 => 31:42 or 21:42 => 1:2

8 0

3 years ago

Calculate the approximate area of the shape to the nearest cm2.

emmasim [6.3K]

This is very simple. So you use two formulas:

Rectangle: Length • Width

Semicircle: Area = $\frac{\pi r^2}{2}$

With that, you do 0.8 ÷ 2 = 0.4 because we will be using radius. When solved, you get 0.2512... But for this problem, I will be rounding everything to the nearest hundredths.

Area of semicircle: ≈ 0.25

Now we solve for the rectangle. That is very easy. Just multiply 0.75 • 0.8 and you get 0.6

For this problem, I'm not sure why they make you round to the nearest centimeter, but if you do, you get 1 cm. Otherwise,

Round to nearest tenth: 0.9

Round to nearest hundredths: 0.85

3 0

3 years ago