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erma4kov [3.2K]
3 years ago
15

( 4.2 + 3 ) + (5.7 x - 2 ) + ( 5 — 2.6 x)

Mathematics
1 answer:
White raven [17]3 years ago
5 0
Answer is 10.2 + 3.1x
Solve by combining like terms

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Two groups of tourist fly to Japan. It takes the first group 4 hours less than the second to fly
Aleksandr-060686 [28]

Answer:

21

Step-by-step explanation:

think about it this way. if the first group takes 17 hours, and the second group takes 4 hours more than the first group, then how long does the second group take?

5 0
2 years ago
Using the discriminatory, determine the number of real solution 2x^2+7x-15=0
Scilla [17]

Answer:

c. two real solutions

Step-by-step explanation:

x = -5 , x = 1.5

6 0
3 years ago
Find the area of the regular polygon
olasank [31]

area = 44.0467 \: cm {}^{2}

<h3>step by step explanation </h3>

● area of regular polygon Formulas ,

⟹a = \frac{l^{2}n}{4tan(\frac{\pi }{n)}}

● now finding the area of regular polygon,

⟹\frac{4 {}^{2} \times 8 }{ 4 \: tan \:  \binom{180}{5} }

⟹a =  \frac{128}{4 \times 0.7265}

⟹a = 44.0467 \: cm {}^{2}

Hope it's helps you

4 0
3 years ago
Mark records his science scores in each monthly assessment over a period of 5 months. In the first assessment he scores 76%. In
katovenus [111]

d. both a relation and a function:

Given:

Mark records his science scores in each monthly assessment over a period of 5 months. In the first assessment he scores 76%. In the second assessment he scores 73%. After that, his scores keep increasing by 2% in every assessment.

x represents the number of assessments since he starts recording and y represents the scores in each assessment.

In order for a relation to be a function the association has to be unambiguous that means that for a given input only one output can exist.If an input can have two or more outputs then you cannot determine which is the correct output for that input.

In the given situation:

x is the input that is number of assessments since mark starts recording the scores so there is only one assessment no repeating.so there is only one output.

Hence the relation is a function.

Learn more about the function here:

brainly.com/question/5975436

#SPJ1

4 0
1 year ago
Marisol is cutting a 13.5-foot plece of ribbon for a craft project. She cuts off 4.5 feet,
Nata [24]

Answer:

Each remaining piece is 2.25 ft.

8 0
3 years ago
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