All categories

4 years ago

Please help 8th grade math

Mathematics

1 answer:

wariber [46]4 years ago

6 0

Answer:

$n \geq -\frac{-29}{28}$

Step-by-step explanation:

$-3(1 - 7n) \geq -32 - 8n\\-3 + 21n \geq -32 -8n\\$

+8n +8n

$-3 + 28n \geq -32\\+3 +3\\28n \geq -29\\/28 /28\\n \geq \frac{-29}{28}$

You might be interested in

192 = 3w^2 solve using square root

exis [7]

Answer:

W=8

Step-by-step explanation:

First you divide both sides by 3 then you square root both sides getting 8

192/3=3w^2/3

64=w^2

w=8

6 0

3 years ago

Please solve!!! <br><br> In a hurry!

boyakko [2]

Answer:

The answer is <u>y=5</u>

Step-by-step explanation:

3y=15

you divide 3 into 3 and 15

3y/3=15/3

y=5

3 0

3 years ago

for any numbers x,y [x=0 in(4) and y = 0 in (5)] and any positive integers m,n, the following holds:x^m · x^n=x^m+nProve number

AlladinOne [14]

Proved

Explanation:

To prove x^m · x^n=x^m+n, let's assign numbers to x, m and n

let x = 2

m = 3, n = 4

x^m · x^n = 2^3 . 2^4

x^m+n = 2^(3+4)

Solve each of the above seperately and comparew the answer:

$\begin{gathered} x^m\times x^n=2^3\times2^4 \\ =\text{ (2}\times2\times2)\times(2\times2\times2\times2) \\ =\text{ 8}\times16 \\ =\text{ }128 \end{gathered}$ $\begin{gathered} x^{m+n}=2^{3+4} \\ =2^7\text{ = 2}\times2\times2\times2\times2\times2\times2 \\ =\text{ 128} \end{gathered}$ $\begin{gathered} sincex^m\times x^n\text{ = 128} \\ \text{and x}^{m+n}\text{ = 128} \\ \text{Therefore, }x^m\times x^n\text{ = x}^{m+n} \end{gathered}$

This expression x^m · x^n=x^m+n has been proved to be equal

4 0

1 year ago

4/5+2/50 find sum and type in whole numbers or fractions

marin [14]

Answer:

Step-by-step explanation:

Least common denominator of 5 , 50 = 50

$\frac{4}{5}+\frac{2}{50}=\frac{4*10}{5*10}+\frac{2}{50}\\\\=\frac{40}{50}+\frac{2}{50}\\\\=\frac{40+2}{50}\\\\=\frac{42}{50}\\\\=\frac{21}{25}$

4 0

3 years ago

Giuliana has 22 quarters and dollar coins worth a total of $10.75

nataly862011 [7]

Quarter is $0.25
Dollar is just $1
x is amount of quarters
y is amount of dollar coins
Two equations we know
0.25x+1y=10.75 and
x+y=22

solve both for y
0.25x+1y=10.75
y=10.75-0.25x

x+y=22
y=22-x

set them equal
22-x= (y) =10.75-0.25x
11.25=0.75x
x=15 quarters

then put x=15 into either equation and now solve for y

x+y=22
15+y=22
y=7 dollar coins

7 0

3 years ago