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3 years ago

What is the difference in length between 1 1/4 inch button and a 3/8 inch button

Mathematics

2 answers:

Katarina [22]3 years ago

6 0

Answer:

7/8

Step-by-step explanation:

Ksenya-84 [330]3 years ago

4 0

Answer:7/8 of an inch

Step-by-step explanation: 1 and 1/4 inch is 5/4 inches, which can be converted into 10/8

10/8-3/8=7/8

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Pls answer quickly

noname [10]

I believe it’s A. -7

3 0

3 years ago

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Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

The level of significance $\alpha= 0.05$ for 95% level of significance

For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

Sample size required, n

$n=\left (\frac{z_{\frac{\alpha}{2}}\cdot \sigma}{E} \right )^{2}=\left (\frac{1.96\cdot4}{75/60} \right )^{2}=39.337984$

Rounding off, n=40

Sample size =40

Keywords:

95% confidence, sample size, Wall Street Journal

3 0

4 years ago

The area of triangle formed by points of intersection of parabola y=a(x−1)(x−4) with the coordinate axes is 3. Find a if it is k

n200080 [17]

Answer:

The value of a will be $a=-\frac{1}{2}$

Step-by-step explanation:

Start by graphing the parabola and the three points of the triangle. These points are at intersections of y=a(x-1)(x-4) and the axes

so the y = 0 points are (1,0) and (4,0).

The x = 0 intersection is when y=a(-1)(-4) or (0,4a)

The base and height of this triangle are

The base would be the distance between the y=0 intersections and the height would be the y value of the other vertex.

Hence, base=3 units and height = 4a units. Thus, area can be calculated as

$A = \frac{1}{2}\times b\times h =\frac{1}{2}\times 3\times 4a = 3$

$a=\frac{1}{2}$

∵ the parabola opens downward therefore a will be negative.

hence, $a=-\frac{1}{2}$

3 0

3 years ago

A movie theater is open x hours Monday through Thursday and y hours Friday through Sunday. Write an algebraic expression that re

Georgia [21]

Answer: x+y

Step-by-step explanation:

Simple.

Since there is nothing splitting, all you need to do is add x and y.

To break it down:

They want to know the hours per week the theater is open. X represents the hours from Sunday to Thursday and Y represents hours from Friday to Sunday therefor all you need to do is add them because they represent Hours.

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3 years ago

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Write two numbers that multiply to the value on top and add to the value on bottom.

9966 [12]

The numbers are 3 and -30 They multiply and give -90 And add to give-27

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3 years ago