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3 years ago

HELP I WILL GIVE YOU BRAINLIEST

Mathematics

1 answer:

LenKa [72]3 years ago

7 0

Find values of x that make the equation equal to 0

x - 3 = 0
x = 3

x + 4 = 0
x = -4

ANSWER: 3, -4

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A student was marked tardy five different times in a 40 day period. What percent of the time was the student tardy?

Reptile [31]

Answer:

12.5%

Step-by-step explanation:

5/40 = .125

.125×100 = 12.5%

4 0

3 years ago

Consider this scaled figure of a swimming pool. The dimensions of the original pool are 24 feet wide by 36 feet long. A rectangl

kozerog [31]

The scale factor used for scaling the actual rectangular pool was 4/15 and the length of the scaled rectangle is 9.6 feet.

<h3>How to calculate the scale factor?</h3>

Suppose the initial measurement of a figure was x units.

And let the figure is scaled and new measurement is of y units.

Since the scaling is done by multiplication of some constant, that constant is called scale factor. Let that constant be 's'.

Then we have:

$s \times x = y\\s = \dfrac{y}{x}$

Thus, scale factor is the ratio of the new measurement to the old measurement.

For this case, we're specified that:

Dimensions of the original pool = 24 feet wide by 36 feet long

The scaled rectangle's dimension: 6.4 feet width and L feet length (we assume the length be L units).

So, in scale drawing, 24 feet was converted to 6.4 feet. Let the scale factor be 's', then:

$6.4 = s \times 24\\\\s = \dfrac{6.4}{24} = \dfrac{4}{15}$

Thus, since length is also scaled by same factor(as the whole figure is scaled by constant scale factor assumingly), we get:

Scaled length = s times original length

$L = \dfrac{4}{15} \times 36 = 9.6 \: \rm feet$

Thus, the scale factor used for scaling the actual rectangular pool was 4/15 and the length of the scaled rectangle is 9.6 feet.

Learn more about scale factors here :

brainly.com/question/8765466

5 0

2 years ago

"A researcher wants to determine if consuming oatmeal regularly reduces the level of bad cholesterol. She finds 120 adults over

Inessa05 [86]

Answer:

An experimental research and particularly a quasi experimental study.

Step-by-step explanation:

An <em>experimental research</em> is one where the investigator study the effects from random samples he got and tested. the investigator manipulates parameters to considers some underlying factors in order to arrive at a conclusion. it is usually used to investigate relationships between variable and make comparison. In this case the investigator is conducting a research on how the consumption of oatmeal in adults reduces the level of bad cholesterol, he measures and study the level of bad cholesterol for 6months and then compare their results.

for example, I can conduct an extensive experimental study on the long term effects of exhaust fumes on the passengers (particularly adults between the ages of 25-50) of public transport in Nigeria. this will be studied and their effects will be compared and a conclusion will be reached on the exposure and the non exposure as the case maybe. most underlying conditions of experimental study are under the direct control of the researcher of the investigator. there are three different types of experimental research ; Pre-experimental study, quasi-experimental study and true-experimental study.

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3 years ago

4x squared plus 8X plus 3 equals 0

Travka [436]

Answer:

4x squared + 8x + 3 =

4x squared: 16x

16x + 8x + 3

add 16 and 8 = 24x + 3 and that's your answer

8 0

3 years ago

1 1.2.4 Quiz: Paying Taxes Question 7 of 10 Income tax is calculated based on: A. gross income minus deductions, B. net income m

Stels [109]

Step-by-step explanation:

Here is your answer

http://www.lasesp.com/article/16336607434947849/Surprise_Gift

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3 years ago