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2 years ago

Can someone please help with my maths homework? I need to estimate the value of 102.3 / 4.7

2 answers:

6 0

The answer would be 20.

102.3 can be rounded down to 100 and 4.7 can be rounded up to 5. 100 divides by 5 is 20.

The trick is to find the 2 closest numbers that you can do mental math with.

anyanavicka [17]2 years ago

3 0

OK - convert the 2 numbers to one significant figure:-

102.3 = 100
4.7 = 5

So the estimate is 100/5 = 20 answer

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Can someone please help me on this question

Grace [21]

Answer: ? = 72

Step-by-step explanation:

We will set up a proportion to solve.

$\displaystyle \frac{?}{56} =\frac{45}{35}$

Now, we will cross-multiply.

? * 35 = 56 * 45

35? = 2,520

? = 72

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1 year ago

9) Which figure has 90° rotational symmetry?

IceJOKER [234]

The answer is B. Thank you

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2 years ago

Which of the following are true statements about angle parking. Angle parking spots have a larger blind spaces than perpendicula

S_A_V [24]

Answer:

Angle parking is more common than perpendicular parking.

Angle parking spots have half the blind spot as compared to perpendicular parking spaces

Step-by-step explanation:

Considering the available options, the true statement about angle parking is that" Angle parking is more common than perpendicular parking." Angle parking is mostly constructed and used for public parking. It is mostly used where the parking lots are quite busy such as motels or public garages.

Therefore, in this case, the answer is that "Angle parking is more common than perpendicular parking."

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2 years ago

You might need:

Oduvanchick [21]

Answer:

The maximum possible number of mosquitoes is 25 millions

Step-by-step explanation:

Let

m(x) -----> the number of mosquitoes in Minneapolis, Minnesota (in millions of mosquitoes)

x ----> the rainfall in centimeters

we have

$m(x)=-(x-5)^{2} +25$

This is a quadratic equation (vertical parabola) open downward

The vertex is the maximum

we know that

The maximum possible number of mosquitoes is equal to the y-coordinate of the vertex

Find out the coordinate of the vertex

The general equation of a vertical parabola in vertex form is equal to

$y=a(x-h)^{2} +k$

where

a is a coefficient

(h,k) is the vertex

In this problem

a=-1 (open downward)

(h,k)=(5,25)

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therefore

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2 years ago

If numerous large random samples or repetitions of the same size are taken from a population, the frequency curve made from prop

Evgen [1.6K]

Using the Central Limit Theorem, the shape of the frequency curve will be approximately normal.

<h3>What does the Central Limit Theorem state?</h3>

It states that for a proportion p in a sample of size n, the sampling distribution of sample proportion is approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1 - p)}{n}}$ , as long as $np \geq 10$ and $n(1 - p) \geq 10$ .

Hence, the shape of the frequency curve will be approximately normal.

More can be learned about the Central Limit Theorem at brainly.com/question/24663213

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1 year ago