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OverLord2011 [107]
3 years ago
8

If 3 lawns are mowed in 4 hours, how long does it take to mow 21 lawns?

Mathematics
2 answers:
VladimirAG [237]3 years ago
6 0

Answer:

28 hours

Step-by-step explanation:

21/3 = 7

7x4=28

Serggg [28]3 years ago
4 0
28 I guess because 3+4=7 and 21+7=28
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Stanley has a collection of seashells. He found 35% of his collection on Florida beaches. If Stanley has 49 seashells from Flori
m_a_m_a [10]

Answer:

The number of seashells he have in his collection all together is <u>140</u>.

Step-by-step explanation:

Given:

Stanley has a collection of seashells. He found 35% of his collection on Florida beaches.

Stanley has 49 seashells from Florida.

Now, to find the number of seashells of his collection altogether.

Let the number of seashells all together be x.

Percentage of seashells found on Florida beaches = 35%.

Number of seashells found on Florida beaches = 49.

Now, to get the number of seashells altogether we put an equation:

35\%\ of\ x=49.

⇒ \frac{35}{100} \times x=49

⇒ 0.35\times x=49

⇒ 0.35x=49

Dividing both sides by 0.35 we get:

⇒ x=140.

Therefore, the number of seashells he have in his collection all together is 140.

4 0
3 years ago
What is equivalent to 9^x=27
erma4kov [3.2K]
If you meant to solve for x...

9^x=27 \\&#10;(3^2)^x=3^3\\&#10;3^{2x}=3^3\\&#10;2x=3\\&#10;x=\dfrac{3}{2}
8 0
3 years ago
Help please very important
son4ous [18]
Domain is (-10, infinity) and range is negative infinity, positive infinity.
4 0
3 years ago
Chin-li is building a brick wall along the front of his property. The wall will have 15 rows of bricks, with 32 bricks in each r
Finger [1]

Answer:

<h3>The solution is 480 bricks.</h3>

Step-by-step explanation:

We are given that number of rows of bricks in a wall = 15 rows.

Number of bricks in a row = 32 bricks.

In order to find the total number of bricks, we need to multiply number of rows with number of bricks in a row.

Total number of bricks in 15 rows = 15 × 32 = 480 bricks.

Therefore, will Chin-li will need 480 bricks.

<h3>The solution is 480 bricks.</h3>
3 0
3 years ago
Please help me out!​
marishachu [46]

Answer:  g = -4  and   h =1     or   g= -1  and h = -2

Step-by-step explanation:

If two exponents have the same base and are multiplied together,  you will keep the base unchange and add the exponents.  

So looking at the equation, the base is 2 for both and they are raised to the powers  g and h, meaning that if  g and h are added together they have  to equal -3.

So find two numbers that their sum is -3.

For example,  -1 and -2 add up to -3, -4 and 1 add up to -3.

4 0
3 years ago
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