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Vedmedyk [2.9K]
3 years ago
15

A spider rested on a wall 5 feet from the floor. It starts climbing up the wall, 1/2 foot every hour. When it reaches a height o

f 8 feet, it starts climbing back down, 1/2 foot every hour. How high up the wall will the spider be at the end of 10 hours?
Mathematics
1 answer:
NISA [10]3 years ago
7 0

Answer:

It will be at 3 feet.

Step-by-step explanation: 8-5 gives you 3. This is because 1/2 foot an hour gives you 5.

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Give two examples that show how using parentheses can change the order in which operations are performed in an expression
Tom [10]

Yes, parentheses can change the order in which operations are performed in an expression.

Let us understand this with two examples.

First example.

Let us suppose we have to simplify the expression

2\cdot (5-3)\\
=2\cdot 2\\
=4

In this expression we have evaluated subtraction first instead of multiply.

Second example.

Let us suppose we have to simplify the expression

(5\cdot 2)- 3\\
=10-3\\
=7

In this expression we have evaluated multiplication first and then subtraction.

Therefore, from above two examples we can see that  parentheses can change the order in which operations are performed in an expression.

7 0
3 years ago
Emelina wrote the equation of a line in point-slope form as shown below. (y+4)=3(x+2) What is Emelina’s equation in slope-interc
Sergeeva-Olga [200]

Answer:

y=3x+2

Step-by-step explanation:

We are given equation as

(y+4)=3(x+2)

Since, we have to write equation in slope-intercept form

so, we can use slope-intercept formula

y=mx+b

where m is a slope

b is y-intercept

so, we can write our equation in this form

(y+4)=3(x+2)

Distribute 3

y+4=3\times x+3\times 2

y+4=3x+6

Subtract both sides by 4

y+4-4=3x+6-4

y+4-4=3x+6-4

y=3x+2

So, slope-intercept form of equation is

y=3x+2


4 0
3 years ago
Read 2 more answers
The sum of three consecutive integers is 189. What are the integers?
Leto [7]

Answer: 62+63+64

Step-by-step explanation:

Divide 189 by 2. That gives you 63. Then go for a number 1 above it and 1 below it.

8 0
4 years ago
3
EastWind [94]

Answer:

0.223 is the answers for the question but I got this answer 0.181

Step-by-step explanation:

please mark me as brainlest

7 0
2 years ago
Paul's family drove 377 mi to the beach averaging 58 ​ mi/h ​ on the way there. On the return trip home, they averaged 65 ​ mi/h
Jet001 [13]

The answer is 12.3 hours.

On the way to the beach, the family averaged 58 mi/h over 377 mi, so we take 377/58 to find the amount of time spent going to the beach. 377/58 = 6.5 hours.

On the way back, they averaged 65 mi/h over the same 377 mi, so we take 377/65. 377/65 = 5.8 hours.

6.5 + 5.8 = 12.3


6 0
4 years ago
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