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3 years ago

What is the answer to number 18?

Mathematics

2 answers:

Rashid [163]3 years ago

8 0

The answer to your problem is C. You start out at zero. The red line goes from 0 to 3, hinting that the first part of your expression is a positive three. The blue arrow points towards the -4. The difference between 3 and -4 is 7, and since the line goes backwards, that means that the 7 in your expression is actually a negative. This provides you with answer C: 3-7.

Serga [27]3 years ago

3 0

I bealive it is b. ( I had the exact same 7 th grade homework page ad u today;)

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swat32

The answer is A. Here's the equation graphed and shows why the answer is A

8 0

2 years ago

I’m unsure how to solve this... help?

dem82 [27]

Time taken is equal to distance divided by speed
So time is 50/5 = 10 seconds

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3 years ago

Read 2 more answers

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sergij07 [2.7K]

9514 1404 393

Answer:

47 -6√10

Step-by-step explanation:

As you know, the area of a square is the square of the side length. It can be helpful here to make use of the form for the square of a binomial.

(a -b)² = a² - 2ab + b²

(√2 -3√5)² = (√2)² - 2(√2)(3√5) + (3√5)²

= 2 - 6√10 + 3²(5)

= 47 -6√10

<em>Check</em>

√2-3√5 ≈ -5.29399 . . . . . . . . note that a negative value for side length makes no sense, so this isn't about geometry, it's about binomials and radicals

(√2-3√5)² ≈ 28.02633

47 -6√10 ≈ 28.02633

5 0

2 years ago

Find each angle measure

tigry1 [53]

Answer:

1=125

2=55

3=55

4=125

5=125

6=55

7=55

8=125

Step-by-step explanation:

5 0

2 years ago

Andrew fish tank holds 144 gallons of water. To clean the tank, he drains the water at a rate the water at a rate of 6 gallons p

Kobotan [32]

Answer:

8 minutes

Step-by-step explanation:

Since the level of the tank needs to be at two-thirds its original level, then this means that Andrew needs to drain only one-third of the fish tank. Therefore the amount of time it would take can easily be solved with this 2-step equation...

6t = 144 * $\frac{1}{3}$ .... first multiply the right side of the equation

6t = 48 ... next divide both sides by 6

t = 8

Finally, we can see that it will take Andrew 8 minutes to drain the tank to two-thirds of its original level.

4 0

3 years ago