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Mekhanik [1.2K]
3 years ago
11

Bettina’s age is three times Melvina’s age. If 20 is added to Melvina’s age and 20 is subtracted from Bettina’s age, their ages

will be equal. How old is each now?
Mathematics
2 answers:
koban [17]3 years ago
8 0
<span>Melvina's age is = x, Bettina's age is = 3x the equation is x + 20 = 3x - 20 subtract 3x from both sides -(3x) + x +20 = 3x - 20 - (3x) -2x + 20 = -20 subtract 20 from both sides -2x + 20 - (20) = -20 - (20) -2x = - 40 divide both sides by -2 (-2x)/-2 = (-40)/-2 x = 20 Melvinas age is 20 and Bettinas age is 60</span>
Deffense [45]3 years ago
4 0

Answer:

bettina=60 melvina 20

Step-by-step explanation:

guess and check:) try it, it really works!

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Henry takes out a $650 discounted loan with a simple interest rate of 12% for a period of 7 months. How much money does Henry re
murzikaleks [220]

Answer:

$546

Step-by-step explanation:

Given

Amount, P = $650

Rate, R = 12%

Period, T = 7 months

Required

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We'll solve this using simple interest formula, as thus

I = \frac{PRT}{100}

Substitute values for T, R and P

I = \frac{\$650 * 12 * 7}{100}

I = \frac{\$54600}{100}

I = \$546

<em>Hence, Henry's withdrawal is $546</em>

6 0
4 years ago
Pls help asap I will give brainerlist plus 25 points
kirza4 [7]

PEMDAS - Parenthesis, Exponents, Multiplication, Division, Addition, and Subtraction

First, we do the exponents.

5² - 4 · 6 + 11

= 25 - 4 · 6 + 11

Next, multiplication (according to PEMDAS).

= 25 - 24 + 11

Although PEMDAS says addition then do subtraction, please note that this is totally interchangeable. For the sake of this problem, subtraction will be done first.

= 25 - 24 + 11

= 1 + 11

Finally, addition.

= 12

This is your answer. Happy studying~

6 0
3 years ago
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Alphabet cutouts come in packages of 6 sheets for $8. How much does Tanesha spend on alphabet cutouts if she need 72 sheets?
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Hey there! :)

Answer:

$96 spent.

Step-by-step explanation:

Set up a proportion to determine the amount spend for 72 sheets. Express it in sheets/amount spent:

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Cross multiply:

6 · x = 8 · 72

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Answer:

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