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3 years ago

Identify the constant in the following expression 9x+7

Mathematics

2 answers:

Elanso [62]3 years ago

5 0

Answer:7

Step-by-step explanation: because 7 is alone in the expression

Aleonysh [2.5K]3 years ago

3 0

Answer:

Step-by-step explanation:

because it is the only number without a variable or something next to it.

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Cutiepies for you :)) and btw THANK YOU FOR HELPING ME

ozzi

1) 20*3/5, use the rule a*b/c=ab/c

$\frac{20*3}{5} =\frac{60}{5} =12$

D is your answer

2) 1/5*8 =1.6, and 1.6 as a fraction is $1\frac{3}{5}$

Just gonna show real quick how I converted this decimal into a fraction...

Split the number into its whole number component and decimal component, 1.6=1+0.6. .6=6/10, and 1 is a whole number, and 6/10 reduced is 3/5. So your answer is $1\frac{3}{5}$ .

3) Two thirds of 93 is 62, and you can word this as 2/3*93=62.

4) Three-fifths of 30 is 18, like the other problem, 3/5*30=18.

5) She has one liter cotainers and each of them are 2/3rds full. So to find how much sports drink is in 5 of the containers, you have to do 5*2/3= $3\frac{1}{3}$ . You multiply 2/3 times 5 because each container has 2/3rds, and there are five containers.

Hope this helps, have a BLESSED and wonderful day, as well as a safe one!

-Cutiepatutie ☺❀❤

6 0

3 years ago

The 2000 census "long form" asked the total 1999 income of the householder, the person in whose name the dwelling unit was owned

shutvik [7]

Answer:

The 99% confidence interval for the 1999 mean incomes of Middletown householders is ($33,013.5, $33,892.5).

Step-by-step explanation:

Of the 40,000 persons, 2621 householders reported their income.

The sample size of the study is, n = 2621.

As the sample size is large, i.e. n > 30 use z-distribution to compute the confidence interval.

The confidence interval for mean is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

The mean of this sample is, $\bar x=\$33,453$

The standard deviation is, $s\approx\sigma=\$8,721$

The critical value of z for 99% confidence level is:

$z_{\alpha /2}=z_{0.01/2}=z_{0.005}=2.58$

The 99% confidence interval for the 1999 mean incomes of Middletown householders is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\=33453\pm2.58\times\frac{8721}{\sqrt{2621}}\\=33453\pm439.50\\=(33013.5, 33892.5)$

Thus, the 99% confidence interval for the 1999 mean incomes of Middletown householders is ($33,013.5, $33,892.5).

8 0

3 years ago

What’s the are of a trapezoid

kozerog [31]

I need to know the question that tells us what the other parts are.

5 0

3 years ago

The figure shown consists of a 6 congruent squares. The area of the figure is 96 sq cm. What is the perimeter of the figure in c

insens350 [35]

Try this solution:

1. if 6 squares are congruent squares, then the length of a side is a=sqrt(96/6)=4 cm.

2. Perimeter is P=2*(6*3)+6*2+2*(6*2)=72 cm.

6 0

4 years ago

The weekly standings are higher than the monthly standings LOL

strojnjashka [21]

Step-by-step explanation:

prime number is only divisible by 1 and itself. ... No other whole numbers can multiply together to make 11. 15 is not a prime number because the factors of 15 are 1, 3, 5 and15 ( ). 15 has more than 2 factors, so it is not a prime number.

6 0

3 years ago