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m_a_m_a [10]
3 years ago
7

A purse contains $2.45 in dimes and quarter. There are two more than twice as many dimes as quarters.How many of each coin on th

e purse. (Álgebra 1 price per unit problem)
Mathematics
1 answer:
lozanna [386]3 years ago
6 0

Answer:

5 quarters 12 dimes

Step-by-step explanation:

The quarters have to be a odd number or you wouldn't have the 5 at the end of the number. Because there are "two more then twice as many" dimes then quarters the number of quarters has to stay down. 3 to 5 is a good guess to start. from there you can add up the dimes until it all fits together

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Solve the equation below for y.<br><br> 12(y−8) = 14y−2
salantis [7]
The answer to the question is: y=-47
5 0
3 years ago
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The value of a professor basketball players autograph rose 30% in the las year.It is now worth $286.00. What was it worth a year
sineoko [7]

Answer:

$220 dollars

Step-by-step explanation:

a = p * w (the percentage formula)

subsitute. It rose by 30 % since last year so you're going to put 1.30 (30% -> 0.30 then add 1)

286 = 1.30 * w

solve.

w = 220

3 0
3 years ago
The total surface area of a cube is 294cm^2.<br><br>Work out the volume of the cube.​
djverab [1.8K]

Answer:

343 cm ^3

Step-by-step explanation:

A cube has 6 squares of equal sizes. 294/6 = 49

The area of one square is 49

Since the area is the length squared, the square root of 49 is 7.

Volume of a cube is area times height. 49 x 7 = 343 cm^3

4 0
3 years ago
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I need the ordered pair plz
Taya2010 [7]

Answer:

(\frac{-1}{2},-1)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Midpoint Formula: (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

Point (-6, 5)

Point (5,  -7)

<u>Step 2: Find Midpoint</u>

Simply plug in your coordinates into the midpoint formula to find midpoint

  1. Substitute [MF]:                      (\frac{-6+5}{2},\frac{5-7}{2})
  2. Add/Subtract:                         (\frac{-1}{2},\frac{-2}{2})
  3. Divide:                                    (\frac{-1}{2},-1)
4 0
3 years ago
If a &lt; 0 and c &gt; b, circle the expression that is greater:
matrenka [14]

Answer:

The expression that is greater is a (b - c)

Step-by-step explanation:

  • a < 0 and c > b, this means <u>(by the addition property)</u> that c - c > b - c⇒0 > b - c

so for the product <u>a(b - c) </u>we would have a multiplication of a negative number <em>a</em> and another negative number <em>(b - c)</em>. We know that the result of the <u>multiplication of two negative numbers  is a positive number.</u>

Therefore, a (b - c) > 0

  • a < 0 and c > b, this means <u>by the addition property</u> that c - b > b - b⇒ c - b > 0

so for <u>a(c - b)</u>, we have the negative number <em>a</em> multiplied by the positive number <em>(c - b). </em>We know that the result of the <u>multiplication of a negative number by a positive number is negative. </u>

<u>Therefore  a (c - b) < 0</u>

Thus, the expression that is greater is the positive one which is a (b - c)

5 0
3 years ago
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