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DanielleElmas [232]
3 years ago
8

Please Help!i really need help with this!​

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

Answer:

11,5 cm or 23 squares

Step-by-step explanation:

draw a cartesian graph and put on the coordinates given then use a ruler

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The probability of drawing a red candy at random from a bag of 25 candies is 2/5. After 5 candies are removed from tehe bag, wha
yaroslaw [1]

Given:

The probability of drawing a red candy at random from a bag of 25 candies is \dfrac{2}{5}.

To find:

The probability of randomly drawing a red candy from the bag after removing 5 candies from the bag.

Solution:

Let n be the number of red candies in the bag. Then, the probability of getting a red candy is:

P(Red)=\dfrac{\text{Number of red candies}}{\text{Total candies}}

\dfrac{2}{5}=\dfrac{n}{25}

\dfrac{2}{5}\times 25=n

10=n

After removing the 5 candies from the bag, the number of remaining candies is 25-5=20 and the number of remaining red candies is 10-5=5.

Now, the probability of randomly drawing a red candy from the bag is:

P(Red)=\dfrac{5}{20}

P(Red)=\dfrac{1}{4}

Therefore, the required probability is \dfrac{1}{4}.

3 0
3 years ago
Draw a conclusion is the statment below always, sometimes, or never true ? Bive at least two examples to support your reasoning.
lions [1.4K]

Answer:

Sometimes

Step-by-step explanation:

Example 1:

Take two numbers as 7,8

LCM of 7,8=7(8)=56

In this case, the lcm of two numbers is equal to the product of the two numbers.

Example 2:

Take two numbers as 6,3

6=3(2)

So,

LCM of 6,3=3(2)=6

In this case, the lcm of two numbers is not equal to the product of the two numbers.

Therefore,

Sometimes, the lcm of two numbers is equal to the product of the two numbers.

8 0
3 years ago
is 3240 a perfect cube? if not then by which smallest number should 3240 be multiplied so that the product is a perfect cube?​
Debora [2.8K]

Answer:

<h2>3240 it's not a perfect cube.</h2><h2>The smallest number should 3240 be multiplied so that the product is a perfect cube is 15² = 225.</h2>

Step-by-step explanation:

3240 is a perfect cube if 3240 = n³ (n ∈ N).

Use the Prime Factorization:

\begin{array}{c|c}3240&2\\1620&2\\810&2\\405&5\\81&3\\27&3\\9&3\\3&3\\1\end{array}\\\\3240=2\cdot2\cdot2\cdot5\cdot3\cdot3\cdot3\cdot3=2^3\cdot3^3\cdot5\cdot3=(2\cdot3)^3\cdot5\cdot3=6^3\cdot5\cdot3

3240=6^3\cdot15\qquad\text{multiply both sides by}\ 15^2\\\\3240\cdot15^2=6^3\cdot15^3=3240\cdot15^2=(6\cdot15)^3=90^3

Used:

a^n\cdot a^m=a^{n+m}\\\\(ab)^n=a^nb^m

5 0
3 years ago
one third of a land is on maize, a fifth of the remainder is on potatoes and the rest which is 0.5 ha is on beans. how much of t
disa [49]

Answer: 1250\ m^2

Step-by-step explanation:

Let x= Total land.

Then for Maize = \dfrac{x}{3}    

For Potatoes = \dfrac15(x-\dfrac {x}{3})=\dfrac15(\dfrac{2x}{3})=\dfrac{2}{15}x

For beans = x- (\dfrac{x}{3}+\dfrac{2}{15}x)=0.5 \ ha

\Rightarrow\ x- (\dfrac{5x+2x}{15})=0.5 \ ha\\\\\Rightarrow\ x- (\dfrac{7x}{15})=0.5 \ ha\\\\\Rightarrow\  \dfrac{15x-7x}{15}=0.5 \ ha\\\\\Rightarrow\  \dfrac{8x}{15}=0.5 \ ha\\\\\Rightarrow\  x=0.5\times\dfrac{15}{8} \ ha\\\\\Rightarrow\  x=0.9375 \ ha

1 ha = 10000.00 m²

0.9375 ha = 9375 m²

Land for potatoes = \dfrac{2}{15}(9375) =1250\ m^2

Hence, 1250\ m^2 of the land is on potatoes.

7 0
3 years ago
Circle C is shown. Line segments E C and C D are radii. Lines are drawn from points E and D to point F on the other side of the
kow [346]

Answer:

47.5^o

Step-by-step explanation:

If sketch of the circle and its points is shown as in the accompanying image, notice that the triangle formed FEC is an isosceles triangle, of which we know the angle at the center (angle ECF) to measure 180^o-95^o=85^o.

Since the other two remaining angles must be equal to each other (they are <em>opposite</em> to sides of the same length - radii CE and CF of the circle), we have that the sum of all must render 180^o:

CFE +FEC+85^o=180^o\\2*CFE+85^o=180^o\\2*CFE=180^o-85^o\\2*CFE=95^o\\CFE=\frac{95^o}{2} \\CFE=47.5^o

7 0
3 years ago
Read 2 more answers
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