Ask question

Ask question

All categories

3 years ago

12

When you use place value to exchange equal amounts when renaming a number what are you doing?

2 answers:

Monica [59]3 years ago

7 0

Using place value to exchange equal amounts is called rounding

Sati [7]3 years ago

6 0

Rounding is what it's called.

You might be interested in

Chris completed 20% of a 50 page reading assignment. How many pages did he read?

MrRissso [65]

Answer:

10 pages

Step-by-step explanation:

To find 20% of 50, multiply .20 x 50

.2 × 50 = 10

8 0

3 years ago

Read 2 more answers

Which are the solutions to the quadratic equation x^2=9x+6

AlekseyPX

I will use a quadratic formula:

$x^2=9x+6\ \ \ \ |-9x-6\\\\x^2-9x-6=0\\\\a=1;\ b=-9;\ c=-6\\\\b^2-4ac=(-9)^2-4\cdot1\cdot(-6)=81+24=105\\\\\sqrt{b^2-4ac}=\sqrt{105}\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-(-9)-\sqrt{105}}{2\cdot1}=\dfrac{9-\sqrt{105}}{2}\\\\x_2=\dfrac{-(-9)+\sqrt{105}}{2\cdot1}=\dfrac{9+\sqrt{105}}{2}$

5 0

3 years ago

Sum and difference of 5+2.3

professor190 [17]

Answer:

sum: 7.3 difference:2.7

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

If 5 + 20 times 2 Superscript 2 minus 3 x Baseline = 10 times 2 Superscript negative 2 x Baseline + 5, what is the value of x? –

sp2606 [1]

Answer:

<h3>Option D) 3 is correct</h3><h3>Therefore the value of x is 3</h3>

Step-by-step explanation:

Given equation is $5+20\times (2)^{2-3x}=10\times (2)^{-2x}+5$

<h3>To find the value of x :</h3>

First solving the given equation we have,

$5+20\times (2)^{2-3x}=10\times (2)^{-2x}+5$

$5+20\times (2)^{2-3x}-5=10\times (2)^{-2x}+5-5$

$20\times (2)^{2-3x}=10\times (2)^{-2x}$

$20\times (2)^2.(2)^{-3x}=10\times (2)^{-2x}$

$20\times 4.(2)^{-3x}=10\times (2)^{-2x}$

$80(2)^{-3x}=10\times (2)^{-2x}$

$\frac{80}{10}(2)^{-3x}=\frac{10\times (2)^{-2x}}{10}$

$8(2)^{-3x}=(2)^{-2x}$

$\frac{(2)^{-3x}}{(2)^{-2x}}=\frac{1}{8}$

$(2)^{-3x}.(2)^{2x}=\frac{1}{2^3}$ ( by using the property $\frac{1}{a^{-m}}=a^m$ )

$2^{-3x+2x}=\frac{1}{2^3}$ ( by using the property $a^m.a^n=a^{m+n}$ )

$2^{-x}=\frac{1}{2^3}$

$\frac{1}{2^x}=\frac{1}{2^3}$ ( by using the property $a^{-m}=\frac{1}{a^m}$ )

Since bases are same so powers are same

Therefore we can equate the powers we get x=3

<h3>Therefore the value of x is 3</h3><h3>Option D) 3 is correct</h3>

5 0

3 years ago

Read 2 more answers

Find the HCF of 27, 63, 54 using prime factorization method.

Step2247 [10]

Answer:

27 = 3 , 3, 3

63= 3 , 3, 7

54= 3 , 3, 3, 2

HCF OF 27, 63 AND 54 = 3 X 3 = 9

<em>HOPE </em><em>THIS </em><em>HELPS </em><em>YOU </em><em>MATE </em><em>Plz </em><em>mark </em><em>it </em><em>as </em><em>brainliest </em><em>answer </em>

<em>（●´∀｀）ノ♡</em><em>（●´∀｀）ノ♡</em><em>（●´∀｀）ノ♡</em><em>(♡˙︶˙♡)</em><em>(♡˙︶˙♡)</em><em>(*´∇｀*)</em><em>(*´∇｀*)</em><em>(*´∇｀*)</em><em>Ｏ(≧▽≦)Ｏ</em><em>Ｏ(≧▽≦)Ｏ</em><em>Ｏ(≧▽≦)Ｏ</em><em>☜☆☞</em><em>( ˘ ³˘)♥</em><em>(♥ω♥*)</em><em>(｡’▽’｡)♡</em><em>(｡’▽’｡)♡</em><em>(｡’▽’｡)♡</em><em>(≧∇</em>

7 0

3 years ago