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gayaneshka [121]
3 years ago
12

The first one is supposed to be 1 over 2 1/2(4a+10=2a+

Mathematics
1 answer:
pantera1 [17]3 years ago
5 0

Step-by-step explanation:

1/2(4a+10)=2a

expand

2a+5=2a

-2a -2a

=5

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Three boys cut out hundredths decimal models. Luke shades three fourths of one model. Owen shades four small squares of one mode
Ad libitum [116K]

Answer:

Luke = 0.75

Owen = 0.04

Jacob = 2.9

Step-by-step explanation:

A model = 100 small squares

100 small squares = 1

Luke shades three fourths of one model.

Luke = 3/4 of 1 model

= 3/4 × 1

= 0.75

Owen shades four small squares of one model.

Owen = 4/100

= 0.04

Jacob shades two full models and nine tenths of another model

Jacob = 2 + 9/10

= 2 + 0.9

= 2.9

Luke = 0.75

Owen = 0.04

Jacob = 2.9

6 0
3 years ago
Chelsea had $71.18 she bought a new pair of glasses for $59.95 can she buy a case that costs $12.95​
Veseljchak [2.6K]

No, because she only has $11.23 left.

4 0
3 years ago
8. The formula for converting degrees Fahrenheit (F) to
JulsSmile [24]

Answer:

C 15°

Step-by-step explanation:

Since the formula for converting Fahrenheit to Celsius is (F - 32) × 5/9

F = 59°

59 - 32 = 27°

27 × 5/9 = 27 divided by 9 is 3

3 × 5 = 15° Celsius

4 0
3 years ago
Read 2 more answers
-3x-3y=3 ,y=-5x-17 solving systems by substitution
Law Incorporation [45]

Answer:

(-4, 3)

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

Equality Properties

<u>Algebra I</u>

  • Solving systems of equations by substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

-3x - 3y = 3

y = -5x - 17

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                    -3x - 3(-5x - 17) = 3
  2. Distribute -3:                       -3x + 15x + 51 = 3
  3. Combine like terms:           12x + 51 = 3
  4. Isolate <em>x</em> term:                     12x = -48
  5. Isolate <em>x</em>:                              x = -4

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                    y = -5x - 17
  2. Substitute in <em>x</em>:                       y = -5(-4) - 17
  3. Multiply:                                  y = 20 - 17
  4. Subtract:                                 y = 3
8 0
3 years ago
The mean of eight numbers is 41.  The mean of two of the numbers is 29. What is the mean of the other six numbers​
GarryVolchara [31]

Answer:

45

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count}

Given the mean of 8 numbers is 41 , then

\frac{sum}{8} = 41 ( multiply both sides by 8 )

sum of 8 numbers = 328

Given the mean of 2 numbers is 29 , then

\frac{sum}{2} = 29 ( multiply both sides by 2 )

sum of 2 numbers = 58

The sum of the remaining 6 numbers = 328 - 58 = 270 , so

mean = \frac{270}{6} = 45

The mean of the other 6 numbers = 45

8 0
3 years ago
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