What is a real number?

Answers

Answer 1

Answer:

Real numbers are all irrational and rational numbers. These are all the numbers on the number line that represent a quantity of some sort.

Answer 2

Answer: Real number is number that can be found on the number line. This includes both the rational and irrational numbers.

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The area of a rectangular playground is 420 sq.m, If the length is increased by 7 and breadth is decreased by 5, the area of the rectangular playground remains the same, find the length and breadth of the rectangular playground.

Answers

Area = 420 sq m

length x breadth = 420

(l + 7)(b -5) = 420

lb = (l+7)(b-5)

lb = lb - 5l + 7b - 35

-5l + 7b - 35 = lb - lb

7b - 5l = 35

7b = 35 + 5l

b = $(35 + 5l)/(7)$ = 5 + $(5l)/(7)$ m

-5l = 35 - 7b

l = $(7b-35)/(5)$ = $(7b)/(5)$ - 7 m

Wich dog sitting service is more economical to use if you need 5 hours of service

Answers

Answer:

You answer my questions and I will answer urs

Step-by-step explanation:

One and three fourths as a percent ?

Answers

The answer is 1.75 hope thishelps

one and three fourth = 7/4 ; 7/4*100 = 175%

What is the product (2x-1)(x+4)

Answers

Answer: $2x^2+7x-4$ .

Step-by-step explanation:

To find : The product of $(2x-1)(x+4)$

Using distributive property : $a(b+c)=ab+ac$ , we have

$(2x-1)(x+4)\n\n= (2x-1)x+(2x-1)4$

Again , using distributive property : $(b+c)a=ba+ca$ , we have

$(2x-1)x+(2x-1)4=2x\cdot x+(-1)x+2x\cdot 4+(-1)4\n\n=2x^2-x+8x-4\n\n= 2x^2+7x-4$

Hence, The product of $(2x-1)(x+4)$ is $2x^2+7x-4$ .

2x(x+4)-1(x+4)
2x^2+8x-x-4
2x^2+7x-4

Is this proportional

Answers

Answer:

yes

Step-by-step explanation:

its a straight line

How can I right this in slope intercept form -7x+y=-19

Answers

slope intercept form is always y=mx+b, m is = to the slope, and b is = to the y intercept, so u need to get the x on the right side.
-7x+y=-19
+7x +7x
y=7x-19
and there u go, y=7x-19

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