MATHEMATICS MIDDLE SCHOOL

Use properties and mental math to find sum 10 1/8+(3 5/8+2 7/8)

Answers

Answer 1

Answer:

The given expression {10 $(1)/(8)$ + (3 $(5)/(8)$ + 2 $(7)/(8)$ )} is equivalent to 16.625.

What are algebraic expressions?

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the expression as -

10 $(1)/(8)$ + (3 $(5)/(8)$ + 2 $(7)/(8)$ )

The given expression is -

10 $(1)/(8)$ + (3 $(5)/(8)$ + 2 $(7)/(8)$ )

81/8 + 29/8 + 23/8

(81 + 29 + 23)/8

133/8

16.625

Therefore, the given expression {10 $(1)/(8)$ + (3 $(5)/(8)$ + 2 $(7)/(8)$ )} is equivalent to 16.625.

To solve more questions on algebraic expressions, visit the link below -

brainly.com/question/1041084

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Answer 2

Answer: 3 5/8 + 2 7/8 = 6 1/8 + 10 1/8 = 16 2/8 so the answer would be 16 2/8

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40 percent of 112.5%

Answers

First 112% is 1.12 divide it by 100 to get .0112 then mutiply it by 40 to get .448 so .448 is the answer. Hope this helps.

Which is longer, 2 feet or 28 inches?

Answers

28 inches its 2 more inches than t feet

28 inches.
2 feet is 24 inches

A rectangular sheet of paper had a width of 841 millimetres.Its area was 1 square metre.
What was its length to the nearest millimetre?

Answers

1 meter = 1000 millimeters

Area = length * width
A = lw

1000 = l * 841
1.19 = l

Length = 1.19 millimeters

Mariana writes the equation below to represent a problem. Which problem could theequation represent?
6x =
-
Mariana pays $15 for 6 of the same plants. How much does each plant cost?
TĚ
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Mariana plants 15 flowers in a row. The row is 6 feet long. How much space is between each flower?
58
Mariana uses 6 boxes of fertilizer. Each box weighs 15 ounces. How much fertilizer does she use in
all?
A plant is 6 inches tall. It grows to be 15 inches tall. How much does it grow?

Answers

The problem that could represent the equation is Mariana uses 6 boxes of fertilizer each box weighs 15 ounces How much fertilizer does she use in all

Given that,

The equation is 6x = 15.

Based on the above information, the information is as follows:

Here Mariana should used 6 boxes for fertilizer
And each box should weight 15 ounces.
So overall how much fertilizer should be used.

Learn more: brainly.com/question/1691136?referrer=searchResults

Answer:

Mariana uses 6 boxes of fertilizer each box weighs 15 ounces How much fertilizer does she use in all

Step-by-step explanation:

A rectangle whose perimeter is 80 m has an area of 384 m^2. Find the dimensions of the rectangle.

Answers

Since area of a rectangle = length X width I came up with an answer of 16 X 24 =384
Also, 16+16+24+24 = 80

$2a+2b=80 \ /:2\ \ \ \Rightarrow\ \ \ \ a+b=40\ \ \ \Rightarrow\ \ \ a=40-b\n \na\cdot b=384\ \ \ \ \Rightarrow\ \ \ (40-b)\cdot b=384\ \ \ \ \Rightarrow\ \ \ -b^2+40b-384=0\n \n \Delta=40^2-4\cdot (-1)\cdot(-384)=1600-1536=64\ \ \ \Rightarrow\ \ \ √(\Delta) =8\n \nb_1= (-40-8)/(2\cdot(-1))= (-48)/(-2) =24\ \ \ \ \Rightarrow\ \ \ a_1=40-b_1=40-24=16 \n \nb_2= (-40+8)/(2\cdot(-1))= (-32)/(-2) =16\ \ \ \ \Rightarrow\ \ \ a_2=40-b_2=40-16=24$

$Ans.\ The\ dimensions\ of\ the\ rectangle:\ \ \ 16\ m\ \ \ and\ \ \ 24\ m$

33% of what number is 1.45

Answers

We have an equation: 1.45/?= 33/100

Cross multiply:
33*? = 1.45*100
⇒ ? = 1.45*100/33= 4.394

The final answer is 4.394~

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