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sineoko [7]
3 years ago
13

Can someone help me please? What is 21 x ? = 7?

Mathematics
1 answer:
Sauron [17]3 years ago
7 0

Answer:1/3 or 0.3^.

Step-by-step explanation: replace the question mark as x

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Three hundred yards of fencing is being used to fence in a rectangular garden. The area of the garden is modeled by a quadratic
Nat2105 [25]
Perimeter = 300

Area = a(w)

Width = w

Perimeter = 300 and width = w ⇒ length = [300 - 2w ]/2 = 150 - w

Area, A = width * length = w(150-w) = 150w -w^2

Roots = w = 0 and w =150
Vertex
           w =[0 + 150]/2 = 75
           A = 75(150-75) = 75^2 = 5625

           (75,5625)

Given that the coefficient of w^2 is negative, the vertex is the maximum of the function or area.

The second coordinate of the vertex (5625) is the maximum area the fence can enclose.

Answer: the maximum area that can be enclosed by the fencing.
 Hope this helps!
4 0
4 years ago
Numbers like 10,100,1000,and so called
Dovator [93]
The power of 10 i think it was called
8 0
3 years ago
Please I am having trouble with this problem. h/2 – 6 < 3
lana66690 [7]

Answer:

h < 18

Step-by-step explanation:

1) Add 6 to both sides.

< 3 + 6

2) Simplify 3 + 6 to 9.

< 9

3) Multiply both sides by 2.

h < 9 × 2

4) Simplify 9 × 2 to 18.

h < 18

7 0
3 years ago
Read 2 more answers
Lucy spends $140 at the grocery store. Dairy items made up 1/7 of her purchase and vegetables accounted for 3/20 of her total. H
Inessa05 [86]

For this case we make a rule of three to find the cost of dairy products and vegetables.

$ 140 --------------> 1

x ------------------>\frac {1} {7}

Where "x" represents the amount of money spent on dairy products.

x = \frac {\frac {1} {7} * 140} {1}\\x = 20

So, I spend $ 20 on dairy products.

Now we have:

$ 140 --------------> 1

y ------------------> \frac {3} {20}

Where "y" represents the amount of money spent on vegetables.

x = \frac {\frac {3} {20} * 140} {1}\\x = 21

So, I spend $ 21 on vegetables.

Therefore, I spend $ 41 on vegetables and dairy products.

$ 140- $ 41 = $ 99

Spending $ 99 dollars on products other than vegetables and dairy products

Answer

$ 99

7 0
4 years ago
Productivity increases under which of these scenarios? a. inputs and outputs increase proportionately b. outputs decrease while
Anna [14]

Answer:

d. inputs decrease while outputs remain the same  -- True  here productivity increases.

Step-by-step explanation:

In any organization productivity is a measure of efficiency

Productivity is normally expressed as ratio of output/input

Obviously when output increases productivity increases and also

when input decreases productivity increases.

a. inputs and outputs increase proportionately -- False here no change.

b. outputs decrease while inputs remain the same -- False here productivity decreases.

c. inputs increase while output remains the same -- False  here productivity decreases.

d. inputs decrease while outputs remain the same  -- True  here productivity increases.

3 0
3 years ago
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