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frutty [35]
3 years ago
7

Evaluate 4 a + 5 b when a=3 and b= -1.2

Mathematics
2 answers:
AleksandrR [38]3 years ago
5 0

Answer:

6

Step-by-step explanation:

4 a + 5 b

a=3 and b= -1.2

4(3) +5(-1.2)

12 +-6

6

Basile [38]3 years ago
3 0

Answer:

6

Step-by-step explanation:

Plug the values of a and b into the equation.

4(3) + 5(-1.2)

12 + (-6)

Adding negatives basically means subtracting, so...

12-6 = 6

Therefore your answer is 6

Hope this helps!

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a construction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut w
lapo4ka [179]

Dividing a whole number and an improper fraction seems tricky, but it just has one or two more steps than the normal process.  First, convert the whole number "9" into a fraction by giving it a denominator of "1".  It should look like 9/1.  Now that both numbers are converted into like formats (improper fractions), you should have 9/1 divided by 5/3.

Second, flip 5/3 over into 3/5 - this is the "reciprocal". Now you have 9/1 divided by 3/5.  It's just a matter of multiplying across the math sentence.  Multiply the numerators (9x3) and the denominators (1 x 5).  Your new fraction should be 27/5.  This is your answer in the improper fraction format.

You can create other formats depending on the expected answer.  For a mixed number, "divide your fraction UP" (27 divided by 5) which gives you 5 and 2/5.  This can be further converted into 5.4 if you need your answer in decimal form.


4 0
3 years ago
Can someone please help me with number 5? please
UNO [17]
\frac{4n^2c^5}{8nc^4}=\frac{4nc^4(nc)}{4nc^4(4)}=\frac{nc}{4}
6 0
3 years ago
Read 2 more answers
David uses 1/2 cup of apple juice for every 1/4 cup of cranberry juice to make a fruit drink. Enter the number of cups of apple
mario62 [17]

Answer:

2 cups of apple juice

Step-by-step explanation:

In order to get one cup of cranberry juice, you would need to add the ratio, 1/4, four times. Since for every 1/4 cup of cranberry juice there is 1/2 cup of apple juice, add 1/2 four times

1/2 + 1/2 + 1/2 + 1/2 = 4/2 = 2 cups

8 0
3 years ago
Tyler had $65.40 in his checking account. Then he wrote checks on the account for $20.38, $11.48, and $19.50. What is the balanc
andrew-mc [135]

money going out (20.38+11.48+19.50) =51.36

balance - out = new balance

65.40-51.36 =

14.04

new balance =  14.04

4 0
4 years ago
Write down the decimal equivalent to;
Nesterboy [21]
A) 25% = 25/100 = 0.25

b) 18% = 18/100 = 0.18

c) 40% = 40/100 = 0.40

d) 2% = 2/100 = 0.02

e) 0.15% = 0.15/100 = 0.0015
3 0
3 years ago
Read 2 more answers
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