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3 years ago

PLEASE HELP GIVING BRAINLIEST! :)

Mathematics

2 answers:

PIT_PIT [208]3 years ago

7 0

Answer:

Step-by-step explanation:

a = 3
b = 5

= 3a + b - 4

= 3(3) + 5 - 4

= (3 . 3) + 5 - 4

= 9 + 5 - 4

= 9 + 1

= 10

QveST [7]3 years ago

6 0

Answer:

Step-by-step explanation:

3a+b - 4

Let a =3 and b = 5

3(3) +5 -4

Multiply

9+5-4

Add and subtract

14-4

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Suppose you have a coin collection of dimes and quarters containing 46 coins. If you have 6.70 dollars, how many of each type of

NNADVOKAT [17]

Answer:

The number of dimes = 32

The number of quarters = 14

Step-by-step explanation:

Here, the total number of coins combined = 46

Let us assume the number of dimes = m

So, the Number of quarter = Total Coins - Number of dimes = 46 - m

Now,as we know:

1 dime = $0.1

So, m dimes = m x ($0.1) = $(0.1 m)

1 Quarter = $0.25

So, ( 46 - m ) Quarters = (46 - m ) x ( $ 0.25) = 11.5 - 0.25 m

Also, given the total amount of coins = $ 6.70

⇒ Value of (Dimes + Quarters) = $ 6.70

or, (0.1 m) + 11.5 - 0.25 m = 6.70

-0.15 m = - 4.8

or, m = 4.8/0.15 = 32

⇒ m = 32

Hence, the number of dimes = m = 32

And the number of quarters = 46 - m= 46 -32 = 14

4 0

3 years ago

If 2x+3+7×=-24 what is the value of x

neonofarm [45]

Answer: x = -3

Step-by-step explanation:

2x + 7x = 9x

9x + 3 -24

- 3

9x = -27

divide by 9

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4 years ago

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OverLord2011 [107]

Answer:

The correct answer is option B.

Step-by-step explanation:

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3 years ago

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Someone helpe answer this question please

Aneli [31]

2. We have 25+15+10=50 minutes total work out, 25 lifting, so a ratio of

25:50 which is simplified to

Answer: 1:2

$9 \textrm{ hours } \times \dfrac{6 \textrm{ miles}}{2 \textrm{ hours}} = 27 \textrm{ miles}$