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sesenic [268]
1 year ago
12

4a*(3-2b) for a=1/2 and b=-1 pls hurry

Mathematics
1 answer:
insens350 [35]1 year ago
8 0

Answer:

2

Step-by-step explanation:

Use pemdas

4a*(3-2b)

4(1/2)*(3-2(-1))

4* 1/2 = 2

2*(3-2(-1)

-2*-1 = 2

2(3-2)

3 -2 = 1

2(1) = 2

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A combo meal and a salad cost $12
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Answer:

The cost of a combo meal is $8 and a salad is $4.

Step-by-step explanation:

You have to form simultaneous equations with the given informations. Let combo meal be m and salad is s :

m + s = 12 -  -  - (1)

2m + s = 20 -  -  -  (2)

Next, you have to solve these equations :

(2) - (1)

2m + s - m - s = 20 - 12

m = 8

sub  \: \: m = 8  \: \: into \:  \: (1)

(1)⇒

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8 0
3 years ago
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What is the probability of rolling a number less than 5 and flipping heads?
lys-0071 [83]
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Find 15/22 *2/15 round appropriately
frez [133]
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3 years ago
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How do you solve this equation 1/3(x+1)+2x=2.
SashulF [63]

Answer: x = 5/7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

1/3 (x + 1) + 2x = 2

(1/3) (x) + (1/3) (1) + 2x = 2 (Distribute)

1/3x  + 1/3 + 2x = 2

(1/3x + 2x) + (1/3) = 2 (Combine Like Terms)

7/3x + 1/3 = 2

Step 2: Subtract 1/3 from both sides.

7/3x + 1/3 - 1/3 = 2 - 1/3

7/3x =  5/3

Step 3: Multiply both sides by 3/7.

(3/7) * (7/3x) = (3/7) * (5/3)

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Answer:

0.98

Step-by-step explanation:

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