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3 years ago

What % of 630 is 189

2 answers:

4 0

To find your answer, set up a proportion. 189 over 630 is equal to x over 100. Multiply 189 by 100 to get 18,900, and then divide 18,900 by 630 to get 30. 30% is your final answer

8090 [49]3 years ago

3 0

Answer:

I'm pretty sure its 30.

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7. Convert the subtraction problem into an addition problem.<br> 10- (-5)

dalvyx [7]

Answer:

10 + 5

Step-by-step explanation:

If you are subtracting a negative then it become adding a positive. A way to remember this is because it has matching socks.

7 0

3 years ago

What is the factored form of a2 – 121?

Flura [38]

Answer:

The factored form $a^2-121$ is $(a+11)(a-11)$ .

Step-by-step explanation:

Given : $a^2-121$

We have to write the given expression in factored form.

Factor form of an expression is writing the expression in lower power form such that the product of factors given the original expression

Consider the given expression $a^2-121$ .

We know the algebraic identity $x^2-y^2=(x+y)(x-y)$

Here $a^2-121=a^2-(11)^2$ .

Comparing with identity stated above , we have x= a , b = 11 , thus, we get

$a^2-(11)^2=(a+11)(a-11)$ .

Thus, the factored form $a^2-121$ is $(a+11)(a-11)$ .

7 0

3 years ago

Plsss help (Cuz i'm dumb:D) Calculate the surface area of the prism below, shape below

marin [14]

Surface area of the the rectangles:
8 * 5 + 8 * 4 + 8 * 3 = 96

Surface area of the two triangles:
Use bh/2 base time height over 2
(4 * 3)/2 = 6
There are 2 triangles, 2 * 6 = 12

12 + 96 = 108

5 0

3 years ago

What is the surface area. plz help

goldenfox [79]

5x13 is 65...you have 65 becuase both triangles are there... 5x16 is 80... so 145... 13x16 is 208, so 353 so far. 7x16 is 112, so 465 so far. ANother 112 for the other side is 577. 12x7 is 84 times two for both sides, which is 168. 577+168 is 745. I believe that is your final area of the surface area, 745 Square feet.

3 0

3 years ago

Read 2 more answers

The expression below is a sum of cubes.<br> 216x3 +64<br> true or false?

zepelin [54]

Since 216 is the cube of 6, 64 is the cube of 4 and x^3 is the cube of x, we have

$216x^3 + 64= (6x)^3+4^3$

so the expression is the sum of the cubes of 6x and 4

5 0

3 years ago