Ask question

Ask question

All categories

3 years ago

8

A circular mirror is surrounded by a square metal frame. The radius of the mirror is 3x. The side length of the metal frame is 1

8x. What is the area of the metal
frarno?

1 answer:

Oliga [24]3 years ago

7 0

8x means it’s divided by 5x +9

You might be interested in

Find x when<br> -1/2<br> +<br> X<br> =<br> -21/4

Zigmanuir [339]

Answer:

-19/4

Step-by-step explanation:

-1/2 + x =-21/4

x=-21/4+1/2

x=-21/4+2/4

x=-19/4

5 0

3 years ago

Explain how an estimate b elps you to place the decimal point when multiplying 3.9×5.3

morpeh [17]

The estimate, 4 × 5 = 20, helps me know that the decimal point should be placed so that the answer is close to 20.

4 0

3 years ago

B&B inc. has ordered machine parts and recieves a charge of $15 for shipping and handeling plus $20 per part. Write an equat

Vilka [71]

15 + 20p = c ( this is the answer )
fifteen plus twenty times the number of parts equals the total cost.

5 0

3 years ago

In 2008, there were 507 children in Arizona out of 32,601 who were diagnosed with Autism Spectrum Disorder (ASD) ("Autism and de

Svetach [21]

Answer:

The 99% confidence interval for the proportion of ASD in Arizona is (0.014, 0.018).

Step-by-step explanation:

The information provided is as follows:

$x=507\\n=32601\\\text{Confidence level }=99\%$

The sample proportion is:

$\hat p=\frac{x}{n}=\frac{507}{32601}=0.016$

The critical value of <em>z</em> for 99% confidence level is, <em>z</em> = 2.56.

Compute the 99% confidence interval for the proportion of ASD in Arizona as follows:

$CI=\hat p\pm z_{\alpha/2}\cdot\sqrt{\frac{\hat p(1-\hat p)}{n}}$

$=0.016\pm 2.58\cdot\sqrt{\frac{0.016(1-0.016)}{32601}}\\\\=0.016\pm 0.0018\\\\=(0.0142, 0.0178)\\\\\approx (0.014, 0.018)$

Thus, the 99% confidence interval for the proportion of ASD in Arizona is (0.014, 0.018).

6 0

3 years ago

The cost of 7/2 meters of clothes is $231/4. What is the cost of one meter of cloth?

klio [65]

First of all, i will start by comparing the given values. That will be;
7/2 meters=$231/4
1 meter= x
I represented the unknown value by x. Anyway, you have to cross and multiply. SO 7/2 multiplies x to give you 7/2x and 1 multiplies 231/4 to give you 231/4. That will be;
7/2x=231/4
Divide the both sides by 7/2.
7/2x÷7/2=231/4÷7/2
When dividing fractions, the division sign changes to a multiplication sign and the fraction on the right turns upside down. So;
x=231/4 x 2/7
x=231/14
x=$33/2.
Hope i helped.

5 0

3 years ago