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Tomtit [17]
3 years ago
5

Need help with this. Please explain step by step

Mathematics
1 answer:
Inga [223]3 years ago
5 0

25 base 8 = 21


5*8^0 = 5*1 = 5

2*8^1 = 2*8 = 16

                   =====

                      21

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If a = 7, what is the value of the expression 2(a + 8)?
viktelen [127]

Answer:

2(a + 8) \\ if \: a = 7 \\ 2 \times (7 + 8) \\ 2 \times 15 \\  = 30 \\

please mark as brainliest

8 0
3 years ago
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Tara has 4 4/5 feet of rope. Part A: How many 2/5 foot pieces can Tara cut from the 4 4/5 feet of rope? Show your work. Part B:
aleksley [76]

Answer:

Part A

12 pieces

Part B

Tara can cut Twelve 2/5 foot pieces can be cut from 4 4/5 feet of rope.

Step-by-step explanation:

Part A: How many 2/5 foot pieces can Tara cut from the 4 4/5 feet of rope?

This is calculated as:

4 4/5 feet of rope ÷ 2/5 foot pieces

= 24/5 ÷ 2/5

= 24/5 × 5/2

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Part B: Using the information in Part A, interpret the meaning of the quotient in terms of the two fractions given

The quotient in Part A is 12

Therefore, this can be interpreted as:

Tara can cut Twelve 2/5 foot pieces can be cut from 4 4/5 feet of rope.

3 0
3 years ago
If AC = 15 centimeters, and BC = 12 centimeters, which does AB equal?
marishachu [46]
The answer is C cause from






10

8 0
3 years ago
Evaluate 4x3 + 2 for x = -1
Darina [25.2K]
4 {x}^{3} + 2

Plug in -1 for x

and you'll get this:
4 {( - 1)}^{3} + 2

Solve it further and you'll get:
4( - 1) + 2 \\ = - 4 + 2 \\ = - 2

Therefore,
4 {x}^{3} + 2
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8 0
3 years ago
Read 2 more answers
Can someone answer these 2 questions, thanks!
mash [69]

Answer:

1, answer ..

b, 50% because add this

40+10=50

Step-by-step explanation:

and 2nd one i dont know but i studied it i did not remember

8 0
1 year ago
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