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exis [7]
3 years ago
10

Marina simplified the expression 4x + 5(–4x – b) – (x – 2) to be –17x – 8.

Mathematics
2 answers:
Grace [21]3 years ago
5 0

Answer: C. 2

Step-by-step explanation:

Scilla [17]3 years ago
5 0

Answer:

C

Step-by-step explanation:

Begin by removing the brackets

4x + 5(-4x - b) = -16x - 5b

-(x - 2) = -x + 2

Add the two binomials together to get the third one

4x -20x - 5b - x + 2 = -17x - 8                 Combine the like terms on both sides

-17x - 5b +2 = -17x - 8                             Add 17x to both sides

-5b + 2 = - 8                                           Subtract 2 from both sides

-5b +2 -2 =- 8 -2                                     Combine    

-5b =  - 10                                               Divide by -5

b = -10/-5

b = 2

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Prove that the value of the expression<br> (16^3–8^3)(4^3 +2^3) is divisible by 63.
Darya [45]

Answer:

Step-by-step explanation:

16^3 - 8^3

Take out 8^3 as a common factor.

16^3 = 2^3 * 8^3

8^3(2^3 - 1)  

8^3(8 - 1) = 8^3 * 7

(4^3 + 2^3)     Expand

64 + 8            Combine

72

72 = 9 * 8

Conclusion

(8*3 * 7 )(9*8)

7*9 = 63

So any number containing 63 will divide into the reduced form of

(16^3–8^3)(4^3 +2^3)

7 0
2 years ago
A sand wedge normally costs 65.00. It is on sale for 20% off the regular price. what is the discount
r-ruslan [8.4K]

Answer:$52.00

Step-by-step explanation:

5 0
2 years ago
What is the area of a parallelogram that has a height of 2 1/2 inches and a base of 7 inches
crimeas [40]

Answer:

17 1/2 in²

Step-by-step explanation:

a=l×w

or in this case a=h×b

2 1/2×7= 17 1/2 in²

5 0
2 years ago
The probability distribution for a
Klio2033 [76]

Answer:

.3

Step-by-step explanation:

The probability distribution in the second row simply shows the probabilities for each number in the first row.

To find the probability that x is between -5 and 5, you can add the probabilities -5 < x < 5.

P(-5) = 0.15

P(0) = 0.05

P(5) = 0.1

0.15 + 0.05 + 0.1 = 0.3

7 0
3 years ago
This is not a homework problem so feel free to answer its just guessing thing! If you get it right your like a super legend beca
lora16 [44]
Here, First two number represents Product of first two numbers in L.H.S.
For example, 5 * 3 = 15
Or 9 * 2 = 18

Now, second two numbers represent product of 1st & 3rd number, 
For example, 5 * 2 = 10
Or 9 * 4 = 36

Now, Last two numbers represent Sum of 4 digit-number minus middle number.

So, 7 + 2 + 5 = 143547

In short, Your Final Answer would be: 143547

Hope this helps!
7 0
3 years ago
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