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3 years ago

What number is five more than the product of six and seven write an expression

1 answer:

8 0

Let us say that this number is n

is means equal sign
product means multiplication
more than means addition
so

$n = 5 + 6 \times 7$

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What are sample spaces in math?

Aloiza [94]

Answer:

Sample spaces are for example, if I flip a coin and spin a wheel that has 1, 2, and 3 on it, the sample space would be {H1,H2,H3,T1,T2,T3}. So, sample spaces list the possibilities of a given set.

3 0

3 years ago

Read 2 more answers

Four times the lesser of two consecutive even integers is 12 less than twice the greater number. Find the integers.

valkas [14]

The numbers are: 2n and (2n+2)
we can suggest this equation:
4(2n)=2(2n+2)-12

We compute this equation:
8n=4n+4-12
8n-4n=-8
4n=-8
n=-8/4
n=-2

we compute the numbers:
2n=2(-2)=-4
2n+2=-4+2=-2

answer: the numbers are -4 and -2.

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3 years ago

Sales Tax in the state of Mathland is 8.5%. After buying school supplies, your total was $81.42, before tax. How much do you end

Lapatulllka [165]

Answer:

Step-by-step explanation:

8.5% of 81.42

8.5 81.42 692.07

------- X ---------- = -------------

100 1 100

divide 692.07/100 which gives you 6.9207

if you round it to the nearest hundredth you get 6.92

7 0

3 years ago

A market researcher for Eric’s Electronics wants to study TV viewing habits of residents in Chicago. The individuals in the surv

Elena L [17]

Answer:

Step-by-step explanation:

Confidence interval is written in the form,

(Sample mean - margin of error, sample mean + margin of error)

The sample mean, x is the point estimate for the population mean.

Since the sample size is large and the population standard deviation is known, we would use the following formula and determine the z score from the normal distribution table.

Margin of error = z × σ/√n

Where

σ = population standard Deviation

n = number of samples

From the information given

1) x = 17.5

σ = 5

n = 50

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.05 = 0.95

The z score corresponding to the area on the z table is 1.645. Thus, confidence level of 90% is 1.645

Margin of error = 1.645 × 5/√50 = 1.16

Confidence interval = 17.5 ± 1.16

3 0

3 years ago

What is 1/4 divided by 2/4

Alisiya [41]

$\dfrac{1}{4} \div \dfrac{2}{4}$

------------------------------------------------------------------------
Change the divide fraction to multiplication fraction :
------------------------------------------------------------------------

$\dfrac{1}{4} \times \dfrac{4}{2}$

------------------------------------------------------------------------
Combine into single fraction :
------------------------------------------------------------------------

$\dfrac{4}{8}$

------------------------------------------------------------------------
Reduce to simplest form :
------------------------------------------------------------------------

$\dfrac{4 \div 4}{8 \div 4} = \dfrac{1}{2}$

8 0

3 years ago