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Bogdan [553]
3 years ago
13

HELP PLEASE!

Mathematics
2 answers:
PolarNik [594]3 years ago
6 0
B) 7n−3=n+4

In this case, 'n' is used in place of the word 'number'. 'Product' refers to multiplication, so we multiply n by 7. 3 LESS refers to subtraction, so we subtract 3 from 7n. Then, we know that the solution to that is four more than what the actual number is. MORE refers to addition, so we add 4 to n.
frozen [14]3 years ago
5 0
B) 7n−3=n+4  so then n=(7/6) so n =1.6666....
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which inequality represents the sentence below four and nine tenths less than the product of a number and six is no more that ei
11Alexandr11 [23.1K]

This is one is

4.9<6

7 0
3 years ago
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A cash register contains 5 $10 bills and 3 $5 bills. you randomly pick 4 bills.
kobusy [5.1K]

a. The probability of picking exactly two $10 bills is \frac{3}{7}

b. The probability of picking at most one $5 bill is \frac{1}{2}

<em><u>Explanation</u></em>

Number of $10 bills = 5

and number of $5 bills = 3

Total number of bills= 5+3 = 8. You need to randomly pick 4 bills, so the total possible outcome = ^8C^4

<u>a. </u>

For getting exactly two $10 bills, you need to pick two $10 bills and two $5 bills. That means we will pick two $10 bill from 5 bills and two $5 bills from 3 bills.

So, the probability =\frac{(^5C^2)*(^3C^2)}{^8C^4} =\frac{10*3}{70}=\frac{30}{70}=\frac{3}{7}

<u>b.</u>

For getting at most one $5 bill, you need to pick <u>either zero or one</u> $5 bill.

If you pick <em>zero</em>  $5 bill, that means there are  <em>four</em><em>  </em>$10 bills

and if you pick <em>one  </em>$5 bill, that means there are <em>three  </em>$10 bills.

So, the probability =\frac{(^3C^0*^5C^4)+(^3C^1*^5C^3)}{^8C^4}=\frac{(1*5)+(3*10)}{70}=\frac{5+30}{70}=\frac{35}{70}=\frac{1}{2}


3 0
4 years ago
Find x value <br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B3%7D%20%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%208x%20%2B%2012
riadik2000 [5.3K]
<h2><em>step </em><em>-</em><em>1</em><em> </em></h2>

<em>Changes made to your input should not affect the solution:</em>

<em>Changes made to your input should not affect the solution: (1): "x2" was replaced by "x^2". 1 more similar replacement(s).</em>

<em>x3+x2-8x-12 is not a perfect </em><em>cube</em>

<em>Factoring: x3+x2-8x-12 </em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :</em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :Group 1: x3+x2 </em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :Group 1: x3+x2 Group 2: -8x-12 </em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :Group 1: x3+x2 Group 2: -8x-12 Pull out from each group separately :</em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :Group 1: x3+x2 Group 2: -8x-12 Pull out from each group separately :Group 1: (x+1) • (x2)</em>

<em>Thoughtfully split the expression at hand into groups, each group having two terms :Group 1: x3+x2 Group 2: -8x-12 Pull out from each group separately :Group 1: (x+1) • (x2)Group 2: (2x+3) • (-4)</em>

8 0
3 years ago
Find the difference (20m+3)-(7m-5)
xz_007 [3.2K]

Answer:

Simplifying

(20m + 3) + -1(7m + -5) = 0

Reorder the terms:

(3 + 20m) + -1(7m + -5) = 0

Remove parenthesis around (3 + 20m)

3 + 20m + -1(7m + -5) = 0

Reorder the terms:

3 + 20m + -1(-5 + 7m) = 0

3 + 20m + (-5 * -1 + 7m * -1) = 0

3 + 20m + (5 + -7m) = 0

Reorder the terms:

3 + 5 + 20m + -7m = 0

Combine like terms: 3 + 5 = 8

8 + 20m + -7m = 0

Combine like terms: 20m + -7m = 13m

8 + 13m = 0

Solving

8 + 13m = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + 13m = 0 + -8

Combine like terms: 8 + -8 = 0

0 + 13m = 0 + -8

13m = 0 + -8

Combine like terms: 0 + -8 = -8

13m = -8

Divide each side by '13'.

m = -0.6153846154

Simplifying

m = -0.6153846154Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In this figure, angles Rand S are complementary. Find the measure of angle S.<br>Solution:​
slavikrds [6]

Answer:

∠ S = 28°

Step-by-step explanation:

Complementary angles sum to 90°, that is

∠ R + ∠ S = 90°, substitute

62° + ∠ S = 90° ( subtract 62° from both sides )

∠ S = 28°

7 0
3 years ago
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