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Vanyuwa [196]
2 years ago
9

(8d+4)–(d+2) Subtract

Mathematics
2 answers:
icang [17]2 years ago
6 0

Answer:

7d+2

Step-by-step explanation:

:)

madreJ [45]2 years ago
4 0

Answer: 7d+2

Step-by-step explanation:

(8d+4)-(d+2)

8d+4-d-2

7d-2

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a group of friends are riding bicycles. She takes 4 hours to ride 25.6 kilometers whats there speed?
Dvinal [7]

Answer:

6.4 Kilometers Per Hour

Step-by-step explanation:

To find how many kilometers per hour divide the kilometers traveled by the amount of hours they have rode.

25.6/4=6.4

5 0
2 years ago
I NEED HELP ASAP PLEASE!!
Makovka662 [10]

Answer:

(2x-3) (2x+3)

zeros, x intercepts:  -3/2, 3/2

Step-by-step explanation:

4x^2 -9

We know the difference of squares is a^2 -b^2

This factors into (a-b) (a+b)

Let 4x^2 =a^2  

Taking the square root

2x =a

Let b^2 =9

Taking the square root

b= 3

(4x^2-9 ) = (2x-3) (2x+3)

To find the zeros, we set the equation equal to zero

(4x^2-9 ) = (2x-3) (2x+3) =0

Using the zero product property

2x-3 =0   and 2x+3 =0

2x-3+3 = 0+3                    2x+3-3 = 0-3

2x=3                                  2x=-3

Divide by 2

2x/2 = 3/2                               2x/2 = -3/2

x = 3/2                                       x = -3/2

These are the zeros of the equation (which are also the x intercepts)

8 0
3 years ago
11. One card is drawn from an ordinary deck of 52 cards. Find the probabilities of drawing the following.
Scilla [17]

Answer:

  1. 3/4
  2. 4/13
  3. 7/26
  4. 2/13
  5. 5.52

Step-by-step explanation:

<u>(a)</u>

  • Probability (A heart or a black card) = 13 + 26 / 52
  • Probability (A heart or a black card) = 39/52
  • Probability (A heart or a black card) = 3/4

<u>(b)</u>

  • Probability (A heart or a jack) = 13 + 3 / 52
  • Probability (A heart or a jack) = 16/52
  • Probability (A heart or a jack) = 4/13

<u>(c)</u>

  • Probability (A heart and the ace of clubs) = 13 + 1 / 52
  • Probability (A heart and the ace of clubs) = 14/52
  • Probability (A heart and the ace of clubs) = 7/26

<u>(d)</u>

  • Probability (A 9 or a jack) = 4 + 4 / 52
  • Probability (A 9 or a jack) = 8/52
  • Probability (A 9 or a jack) = 2/13

<u>(e)</u>

  • Probability (The 9 of hearts or a jack) = 1 + 4 / 52
  • Probability (The 9 of hearts or a jack) = 5/52
5 0
1 year ago
Fred's frog jumped 7 times as far as Al's frog. The two frogs jumped a total of 56 inches.How far did Fred's frog jump?
maks197457 [2]
Fred's frog jumped 8
3 0
3 years ago
Read 2 more answers
Please help me with this problem!!!
Lilit [14]

3  {}^{4x  - 5}  = ( \frac{1}{27} ) {}^{2x + 10}  \\ note  \: \: that =  \\ ( \frac{1}{27} ) = ( \frac{1}{3 {}^{3} } ) = 3 {}^{ - 3}  \\  \\ 3 {}^{4x - 5}  = (3 {}^{ - 3} )  {}^{2x + 10}  \\ 3 {}^{4x + 5}  = 3 {}^{ - 3(2x + 10)}  \\ equal \:  \: bases =  > equal \: exponents

4x - 5 =  - 3(2x + 10) \\ 4x - 5 =  - 6x - 30 \\ 4x  + 6x =  - 30 + 5 \\ 10x =  - 25 \\ x =   - 2.5

7 0
2 years ago
Read 2 more answers
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