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nikklg [1K]
2 years ago
10

THIS IS A QUESTION FROM MY FINAL EXAM PLEASE HELP

Mathematics
2 answers:
snow_lady [41]2 years ago
4 0

Answer:

0.44

Step-by-step explanation:

Aliun [14]2 years ago
4 0

Answer:

B

Step-by-step explanation:

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Solve the system by substitution. Check your solution.
Zepler [3.9K]

Answer:

a.  (15, 15)

Step-by-step explanation:

We start with those two equations:

1) a - 1.2b = -3

2) 0.2b + 0.6a = 12

We'll begin by modifying equation #1 to isolate a:

a = -3 + 1.2b

Then we'll use this value for a in the second equation:

0.2b + 0.6 (-3 + 1.2b) = 12

0.2b - 1.8 + 0.72b = 12

0.92b = 13.8

b = 15

Then we'll place that value of b in the first equation to find a:

a - 1.2 (15) = -3

a - 18 = -3

a = 15

3 0
3 years ago
Help... please.I don't understand TT​
pickupchik [31]

Answer:

13. The more passengers, the more Subway cars are needed; 15. There's more weight with the more packages?

Step-by-step explanation:

4 0
3 years ago
Help? linear equations. when you do it drop your Cashapp !
Diano4ka-milaya [45]

Answer:

5. 8/6x + 2

6. -4x - 2

7. y=3

Step-by-step explanation:

4 0
2 years ago
Answer the following Question
anastassius [24]

Answer:

a)$15.95

b) 8kg

Step-by-step explanation:

a)Approach this question by finding how much does it cost for 1g

So,

$2.1/50=$0.042per gram

then, multiple 380 to get the cost of sweets for 380 g

$0.042/gram*380gram=$15.96(Note: the gram cancel out each other)

Which is $15.95 as the question requested

b)This question stated that 3/4 of the metal has 15 kg

So, in order to find the total mass of metal we invert the 3/4 fraction

e.g 4/3*15=20kg

now we have the total mass we can find the mass for 2/5 of the metal

2/5*20kg=8kg

3 0
3 years ago
Y=Mx+b, where m= the slope and b=the y intercept Y=2x-4,slope=2andyintercept=
Dominik [7]

Answer:

slope =2

y intercept = (0,-4)

Step-by-step explanation:

y = 2x - 4

Since this is in the form y = mx+b where m is the slope and b is the y intercept

The slope is 2 and the y intercept is -4

slope =2

y intercept = (0,-4)

7 0
3 years ago
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