The area of the trapezoid is 75 cm2. What is the height of the trapezoid? _____

What is the square root of 98 round to the nearest tenth?

meriva

The square root of 98 is 9.899 so I think if it was rounded to the nearest tenth it would be 9.9

4 0

3 years ago

Shannon is planning her 13th birthday party. It costs $150 to rent the room and $20 for food for each person. How many people ca

Kobotan [32]

Answer:

10

Step-by-step explanation:

first, subtract 350 and 150 to get 200. then divide 200 by 20 to get the maximum amount of people, which leads to 10 people. hope this helps

8 0

3 years ago

Read 2 more answers

Chad’s rectangle measures 4 1/3 units by 3 1/4 units. What is the area?

Elis [28]

Answer: 13 1/3

Step-by-step explanation:

To find the area of a rectangle, multiply the length by the width.

4 0

3 years ago

Find the value of x.

alex41 [277]

Answer:

x = 3.6

Step-by-step explanation:

If 2 chords of a circle intersect then the product of the parts of one chord is equal to the product of the parts of the other chord, that is

5x = 6 × 3 = 18 ( divide both sides by 5 )

x = 3.6

6 0

2 years ago

The concentration of active ingredient in a liquid laundry detergent is thought to be affected by the type of catalyst used in t

Paha777 [63]

Answer:

The 95% confidence interval would be given by $-5.980 \leq \mu_1 -\mu_2 \leq -0.720$

$p_v =2*P(Z$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X_1 =65.2$ represent the sample mean 1

$\bar X_2 =68.55$ represent the sample mean 2

n1=10 represent the sample 1 size

n2=10 represent the sample 2 size

$s_1 =3.55$ sample standard deviation for sample 1

$s_2 =2.29$ sample standard deviation for sample 2

$\sigma =3$ represent the population standard deviation

$\mu_1 -\mu_2$ parameter of interest.

Part a

The confidence interval for the difference of means is given by the following formula:

$(\bar X_1 -\bar X_2) \pm z_{\alpha/2}\sqrt{\sigma^2(\frac{1}{n_1}+\frac{1}{n_2})}$ (1)

The point of estimate for $\mu_1 -\mu_2$ is just given by:

$\bar X_1 -\bar X_2 =65.2-68.55=-3.35$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$