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3 years ago

How many whole numbers are there with not more than 4 digits?

2 answers:

7 0

I think its 1000 numbers because there from 1 to 999 there are 999 numbers, and then you add zero because it is also a whole number.

Zina [86]3 years ago

7 0

A digit is a symbol that is used to write numbers. We use the whole number digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. We can use these digits to write any number.

0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 are one digit numbers.

So total number of one digit number = 10

All the numbers from 10 to 99 are two digit numbers.

So total number of two digit numbers = 90

All the numbers from 100 to 999 are three digit numbers.

So total number of three digit numbers = 900

All the numbers from 1000 to 9999 are four digit numbers.

So total number of four digit numbers = 9 000

whole numbers are there with not more than 4 digits = 10 + 90 + 900 +9000 = 10,000

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There are 39 students sitting on the bleachers and 6 students sitting on the floor. What is the ratio of the number of students

Aleks [24]

Answer:

39;45

Step-by-step explanation:

students on the floor;total students

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3 years ago

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Stacy goes to the county fair with her friends . The total cost of ride tickets is given by the equation c=3.5t , where c is the

madreJ [45]

Answer:

Step-by-step explanation:

Step one:

given data

we are given that the linear function for the cost is c=3.5t

c is the cost and

t is the number of tickets.

We are told that t=15, to find c, let us put the value of t in the linear function for the cost

$c=3.5(15)\\\\c=52.5$

This shows that 15 tickets will cost $52.5

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3 years ago

Find the value of k such that the polynomial x2

Sedaia [141]

Answer:

Step-by-step explanation:

https://www.toppr.com/ask/question/find-the-value-of-k-such-that-the-polynomial-x2k6x22k1/

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3 years ago

The Thomas family bought 5 subs and 4 drinks. They spent 49.50 write and equation that models this situation define x and y vari

OlgaM077 [116]

Answer:

5x+4y=49.50, where:

x is the price per sub

y is the price per drink

Step-by-step explanation:

From the information provided, you can say that the result of adding up the price per sub for the quantity plus the price per drink for the quantity is equal to 49.50 that is the total amount spent, which can be expressed as:

5x+4y=49.50, where:

x is the price per sub

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3 years ago

A local car dealer claims that 25% of all cars in San Francisco are blue. You take a random sample of 600 cars in San Francisco

sammy [17]

Answer:

No, we can't reject the dealer's claim with a significance level of 0.05.

Step-by-step explanation:

We are given that a local car dealer claims that 25% of all cars in San Francisco are blue.

You take a random sample of 600 cars in San Francisco and find that 141 are blue.

Let p = proportion of all cars in San Francisco who are blue

SO, Null Hypothesis, $H_0$ : p = 25% {means that 25% of all cars in San Francisco are blue}

Alternate Hypothesis, $H_A$ : p $\neq$ 25% {means that % of all cars in San Francisco who are blue is different from 25%}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of 600 cars in San Francisco who are blue = $\frac{141}{600}$ = 0.235

n = sample of cars = 600

So, test statistics = $\frac{0.235-0.25}{{\sqrt{\frac{0.235(1-0.235)}{600} } } } }$

= -0.866

Now at 0.05 significance level, the z table gives critical values of -1.96 and 1.96 for two-tailed test. Since our test statistics lies within the range of critical values of z so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.

Therefore, we conclude that 25% of all cars in San Francisco are blue which means the dealer's claim was correct.

4 0

3 years ago