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3 years ago

Which statement is true ?

Mathematics

1 answer:

Nonamiya [84]3 years ago

5 0

Answer:

The correct option is D) All figures that have four sides exactly the same length are also square.

Step-by-step explanation:

i)The option A) is incorrect because Trapezoid is also quadrilaterals but no right angles.

ii) There are many figures that are having four sides but need not be a parallelogram such as square , rectangles etc. Hence the option B) is incorrect.

iii) Square cannot be a Rectangle since square having its four side equal but rectangles opposite sides are equal only so the option B) is incorrect.

iv) Hence the correct option is D).

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Sarah is baking brownies for a bake sale. She has 5 ½ cups of sugar. She needs ¾ cups of sugar for each batch of brownies. How

Tamiku [17]

Answer:

She can make 7 batches of brownies and needs 1/2 cup more to make another batch

Step-by-step explanation:

6 0

3 years ago

An article reported that, in a study of a particular wafer inspection process, 356 dies were examined by an inspection probe and

Marta_Voda [28]

Answer:

The 95% confidence interval for the proportion of all dies that pass the probe is (0.637, 0.733).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

356 dies were examined by an inspection probe and 244 of these passed the probe.

This means that $n = 356, \pi = \frac{244}{356} = 0.685$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.685 - 1.96\sqrt{\frac{0.685*0.315}{356}} = 0.637$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.685 + 1.96\sqrt{\frac{0.685*0.315}{356}} = 0.733$

The 95% confidence interval for the proportion of all dies that pass the probe is (0.637, 0.733).

4 0

3 years ago

A landscape designer is designing a flower garden that is shaped like a parallelogram. The length of the edges of the garden alo

Anika [276]

I don’t know that’s a hard one

8 0

3 years ago

The following set of coordinates represents which figure?

makkiz [27]

The correct answer is rhombus

7 0

3 years ago

If you were to make a line graph which two numbers would be 3.275 be in between if you are trying to round it to the nearest who

alina1380 [7]

Whole number would be 3, so the middle would be 1.5
Nearest tenth would be 3.3, so the middle would be 1.65
Nearest hundredth would be 3.28, so the middle would be 1.64
(I'm not sure if that's what you meant)

5 0

3 years ago