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goldfiish [28.3K]
3 years ago
6

Least common mutiple. for 9 and 30?

Mathematics
2 answers:
Evgen [1.6K]3 years ago
4 0

Answer:

90

Step-by-step explanation:

stira [4]3 years ago
3 0

Answer:

90

Step-by-step explanation:

Multiples of 9:

9, 18, 27, 36, 45, 54, 63, 72, 81, <u>90</u>, 99,

Multiples of 30:

30, 60, <u>90</u>, 120

Hope this is helpful.

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A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single-strand electric f
likoan [24]

Step-by-step explanation:

Let x be the length and y be the width of the rectangular plot.

The plot is bounded on one side by a river and on the other three sides by a single-strand electric fence. It means,

x+2y = 1500

x = 1500 - 2y ....(1)

We know that the area of a rectangular plot is given by :

A = xy ....(2)

Put the value of x from equation (1) in (2)

A=(1500-2y)y\\\\A=1500y-2y^2 .....(3)

For largest area, differentiate above area equation wrt y.

\dfrac{dA}{dy}=\dfrac{d}{dy}(1500y-2y^2)\\\\=1500-4y\\\\\text{Put}\ \dfrac{dA}{dy}=0\\\\1500-4y=0\\\\y=\dfrac{1500}{4}\\\\=375

Put the value of y in equation (1).

x = 1500-2(375)

= 750 m

Put the value of y in equation (3).

A =1500(375)-2(375)^2\\A=281250\ m^2

Hence, the largest area is 281250 m² and its dimensions are 750 m and 375 m.

3 0
3 years ago
It is known that 1.4&lt; square root of 2 &lt;1.5. Find all possible values of the expression 2-square root of 2. How do I find
horsena [70]

Answer:

0.5<2-√2<0.6

Step-by-step explanation:

The original inequality states that 1.4<√2<1.5

For the second inequality, you can think of 2-√2 as 2+(-√2).

Because of the "properties of inequalities", we know that when a positive inequality is being turned into a negative, the numbers need to swap and become negative. So, the original inequality becomes -1.5<-√2<-1.4. (Notice how the √2 becomes negative, too). This makes sense because -1.5 is less than -1.4.

Using our new inequality, we can solve the problem. Instead of 2+(-√2), we are going to switch "-√2" with both possibilities of -1.5 and -1.6. For -1.5, we would get 2+(-1.5), or 0.5. For -1.4, we would get 2+(-1.4), or 0.6.

Now, we insert the new numbers into the equation _<2-√2<_. The 0.5 would take the original equation's "1.4" place, and 0.6 would take 1.5's. In the end, you'd get 0.5<2-√2<0.6. All possible values of 2-√2 would be between 0.5 and 0.6.

Hope this helped!

4 0
3 years ago
I thought of a number, added 4 5/7 to it, and got the number 12 times as big as my original what was my number
Genrish500 [490]
Let's call the number you thought of n. Then what the two steps you took can be written as an equation:
n+4\frac{5}{7}=12n

Subtract n to get all of your variables to one side:
4\frac{5}{7}=11n

At this point, I recommend turning your mixed number into an improper fraction. It will make things easier later on:
\frac{33}{7}=11n

Now divide both sides by 11 to get the value of n:
\frac{3}{7}=n
7 0
3 years ago
Read 2 more answers
Given m/n, find the value of x.
pickupchik [31]

Answer:

x = 152 degrees.

Step-by-step explanation:

The way the 2 angles are positioned indicates that they are corresponding angles.

Corresponding angles are equal.

x = 152 degrees.

Make you know what corresponding angles are and when they can be used. Make sure you also know what parallel lines are (2 or more lines whose distance is a constant). Make sure you also know what a transversal is (a line that crosses the parallel lines).

8 0
2 years ago
HELP ME I REALLY NEED THIS!!!
marysya [2.9K]

2+1× y =? Y=the number of weeks

7 0
3 years ago
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