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3 years ago

I need help with:

Mathematics

1 answer:

lutik1710 [3]3 years ago

7 0

Answer:

7(x+3) or 7x+21

Step-by-step explanation:

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X+6/2 - x-8/3 = 5<br><br> HELP PLEASE

Hoochie [10]

(x + 6)/2 - (x - 8)/3 = 5
Multiply each term by 6:-
3(x + 6) - 2(x - 8) = 30
3x + 18 - 2x + 16 = 30
3x - 2x = 30 -18 - 16
x = 30 - 34
x = -4 (answer)

4 0

3 years ago

Read 2 more answers

A random number generator app on your phone generates two numbers between 0 and 8. What is the probability that the first number

aev [14]

Answer:

1/27

Step-by-step explanation:

There are 9 numbers between 0 and 8. 3 of them are less than 3 (0, 1, and 2), and 1 of them is 6.

The probability is therefore (3/9) (1/9) = 1/27.

8 0

2 years ago

I am very confused please solve and explain.

e-lub [12.9K]

Answer:

c = $\frac{b^2-R^2}{4a}$

Step-by-step explanation:

Given

R= $\sqrt{b^2-4ac}$

Clear the radical by squaring both sides

R² = b² - 4ac ( subtract b² from both sides )

R² - b² = - 4ac ( multiply all terms by - 1 )

b² - R² = 4ac ( divide both sides by 4a )

$\frac{b^2-R^2}{4a}$ = c

6 0

3 years ago

Read 2 more answers

How many groups of 1 2/3 are in 4 1/3

Olegator [25]

Answer:

2. can not be 3 bc it would 5

Step-by-step explanation:

3 0

1 year ago

Which expressions are equivalent to 10a - 25 + 5b

sergey [27]

Answer:

Step-by-step explanation:

$10a-25+5b\\\\-2(-5a-25+5b)=(-2)(-5a)+(-2)(-25)+(-2)(5b)\\=10a+50-10b\qquad NOT\\\\(2a-5+b)(5)=(2a)(5)+(-5)(5)+(b)(5)=10a-25+5b\qquad YES\\\\10(a-2.5+0.5b)=(10)(a)+(10)(-2.5)+(10)(0.5b)\\=10a-25+5b\qquad YES\\\\(-2a+5-b)(-5)=(-2a)(-5)+(5)(-5)+(-b)(-5)\\=10a-25+5b\qquad YES\\\\-10(-a-2.5-0.5b)=(-10)(-a)+(-10)(-2.5)+(-10)(-0.5b)\\=10a+25+5b\qquad NOT$

5 0

3 years ago