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Bess [88]
3 years ago
10

What is the value of a in the equation , when ? 3 15 21 39

Mathematics
2 answers:
AlladinOne [14]3 years ago
8 0

Answer:

15

Step-by-step explanation:

5 times 15 is 75

10 times 3 is 30

75 -30 = 45

IRINA_888 [86]3 years ago
6 0

Answer:

The value of a is 15

Step-by-step explanation:

Given the equation

5a-10b=45

we have to find the value of a when b is 3

5a-10b=45

Substitute b=3, we get

5a-10(3)=45

5a-30=45

5a=45+30=75

a=\frac{75}{5}=15

Hence, the value of a is 15

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Suzie sells a box of 8 muffins for $7.60. What is the price per muffin?
svet-max [94.6K]

Answer:

95 cents per Muffin

Step-by-step explanation:

Set up the long division.

8 | 7 6 0

2. Calculate 76 ÷ 8, which is 9 with a remainder of 4.

9

8 | 7 6 0

7 2

4

3. Bring down 0, so that 40 is large enough to be divided by 8.

9

8 | 7 6 0

7 2

4 0

4. Calculate 40 ÷ 8, which is 5.

9 5

8 | 7 6 0

7 2

4 0

4 0

5. Therefore, 760 ÷ 8 = 95.

8 0
3 years ago
Bag contains 4 red marbles, 2 blue marbles, 1 purple
GaryK [48]

Answer:

432

Step-by-step explanation:

6 0
2 years ago
What is the approximate distance between points A and B?
Aleks04 [339]

Answer:

\displaystyle d \approx 7.62

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 II</u>

  • Distance Formula: \displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

<u>Step 1: Define</u>

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

Point A(1, 4)

Point B(-2, -3)

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance<em> d</em>

  1. Substitute in points [DF]:                    \displaystyle d = \sqrt{(-2-1)^2+(-3-4)^2}
  2. (Parenthesis) Subtract:                       \displaystyle d = \sqrt{(-3)^2+(-7)^2}
  3. [√Radical] Exponents:                        \displaystyle d = \sqrt{9+49}
  4. [√Radical] Add:                                   \displaystyle d = \sqrt{58}
  5. [√Radical] Evaluate:                           d = 7.61577
  6. Round:                                                 \displaystyle d \approx 7.62
3 0
3 years ago
What is the solution to f(x)=g(x) ? Select each correct answer.
ludmilkaskok [199]
Check the picture below

5 0
2 years ago
Read 2 more answers
A conjecture and the two-column proof used to prove the conjecture are shown.
aliina [53]

Answer: the statements and resons, from the given bench, that fill in the blank are shown in italic and bold in this table:

    Statement                                                        Reason

1. K is the midpoint of segment JL                      Given

2. segment JK ≅ segment KL                             <em>Definition of midpoint</em>

3. <em>L is the midpoint of segment KM</em>                 Given

4. <em>segment KL ≅ segment LM</em>                           Definition of midpoint

5. segment JK ≅ segment LM                           Transitive Property of

                                                                             Congruence


Explanation:


1. First blank: you must indicate the reason of the statement "segment JK ≅ segment KL". Since you it is given that K is the midpoint of segment JL,  the statement follows from the very <em>Definition of midpoint</em>.

2. Second blank: you must add a given statement. The other given statement is <em>segment KL ≅ segment LM</em> .

3. Third blank: you must indicate the statement that corresponds to the definition of midpoint. That is <em>segment KL ≅ segment LM</em> .

4. Fourth and fith blanks: you must indicate the statement and reason necessary to conclude with the proof. Since, you have already proved that segment JK ≅ segment KL and segment KL ≅ segment LM it is by the transitive property of congruence that  segment JK ≅ segment LM.

5 0
3 years ago
Read 2 more answers
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