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3 years ago

Estimate 9146 x 174 by first rounding each number so that it has only 1 nonzero digit.

Mathematics

1 answer:

natita [175]3 years ago

5 0

Answer:

1,800,000

Step-by-step explanation:

9146 * 174

Estimate: 9000 * 200 = 1,800,000

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How to simplify 81 1/2

VladimirAG [237]

81=81•2/2=162/2
81 1/2=162/2+1/2
=163/2
So 81 1/2=163/2=81.5

8 0

3 years ago

Read 2 more answers

Cameron has 480 stamps. 5/8 of them are U.S. stamps and the rest are foreign stamps. How many more U.S. stamps than foreign stam

MariettaO [177]

Answer:

120

Step-by-step explanation:

US stamps = 5/8 × 480

= 300

foreign stamps = 480- 300

= 180

more US stamps than foreign stamps = 300-180

= 120

5 0

3 years ago

arnold is writing the program for a video game for one part of the he uses the rule, (x,y) (x + 7, x - 3) to move points on the

pychu [463]

I am pretty sure you mistyped the rule.

The rule (x + 7, y - 3) moves the original coordinate right 7 units and down 3 units

4 0

4 years ago

Curt is installing a picket fence around his garden, which is 24.27 ft by 13.65 ft. When he gets to the hardware store he finds

FromTheMoon [43]

First we have to find the perimeter. Which is for rectangles 2(l+w)

that means the perimeter is 75.84 ft

each slat is apparently half a foot which would be 0.5ft

then you simply divide 0.5 from 75.84 and round it to the nearest whole number.

6 0

3 years ago

(3x^3+4x^2)+(3x^3-4x^2-9x)

zysi [14]

Answer:3x • (2x2 - 3)

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 3 more similar replacement(s).

STEP

Equation at the end of step 1

((3•(x3))+(4•(x2)))+(((3•(x3))-22x2)-9x)

STEP

Equation at the end of step

((3•(x3))+(4•(x2)))+((3x3-22x2)-9x)

STEP

Equation at the end of step

((3 • (x3)) + 22x2) + (3x3 - 4x2 - 9x)

STEP

Equation at the end of step

(3x3 + 22x2) + (3x3 - 4x2 - 9x)

STEP

Pulling out like terms

6.1 Pull out like factors :

6x3 - 9x = 3x • (2x2 - 3)

Trying to factor as a Difference of Squares:

6.2 Factoring: 2x2 - 3

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the

difference of two perfect squares

Final result :

3x • (2x2 - 3)

5 0

3 years ago