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2 years ago

I can never get these answers right omggg I need help!

Mathematics

2 answers:

Alik [6]2 years ago

6 0

Answer:

24-(L times 2) then divide the awnser by 2

Step-by-step explanation:

olga_2 [115]2 years ago

6 0

Answer:

2(l+b)

2*4+2*b=24

8+2b=24

2b=24-8

2b is 16 so b is 16/2

which is 8

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Solve using inverse operations 83+q=125; q=

Vilka [71]

Answer:

Step-by-step explanation:

83+q=125

q=125-83

q=42

3 0

3 years ago

Jenny purchased a prepaid phone card for $30.Long distance calls cost 12 cents a minute using this card. Jenny used her card onl

Korolek [52]

Answer:

43 min

Step-by-step explanation:

subtract $24.84 from $30 and you get $5.16 and you divide that by 12 cents which then you get 43 min

4 0

3 years ago

Solve this using square roots and show your work please<br> 4x^2-256=0

mamaluj [8]

Answer:

x = ± 8

Step-by-step explanation:

Given

4x² - 256 = 0 ( add 256 to both sides )

4x² = 256 ( divide both sides by 4 )

x² = 64 ( take the square root of both sides )

x = ± $\sqrt{64}$ = ± 8

Solutions are x = - 8, x = 8

5 0

3 years ago

What is the difference 1/8-3/10. A. -7/40 B.-3/40 C. 7/40 D. 17/40

mrs_skeptik [129]

The answer is A. -7/40.

1. Make sure the (the denominators) are the same
2. Subtract the (the numerators). Put the answer over the same denominator.
<span> 3. Simplify the fraction (if needed)
</span>

6 0

3 years ago

What is the answer to 3/x=-3/3x+5

Aleonysh [2.5K]

Answer:

$-\frac{5}{4} =x$

Step-by-step explanation:

We first need to bring x up into the numerator. I will find common denominators by multiplying both sides by each denominator.

$\frac{x(3x+5)}{1} *\frac{3}{x} =\frac{-3}{3x+5}*\frac{x(3x+5)}{1}$

This will eliminate both denominators and leave me with

$(3x+5)3=-3(x)\\9x+15=-3x$ after I simplify the parenthesis.

Now I will solve the equation for x by subtracting 9x from both sides.

$9x-9x+15=-3x-9x\\15=-12x$

Then divide by the coefficient of x.

$\frac{15}{-12}=\frac{-12x}{-12}$

$-\frac{5}{4} =x$

7 0

3 years ago