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2 years ago

If 3/5 of a number is 42,what is the twice number

Mathematics

2 answers:

ELEN [110]2 years ago

7 0

Answer:

2x=140

Step-by-step explanation:

Let the number be x

3/5x=42

X=42×5÷3

X=210÷3

X=70

Multiplying both sides by 2, we get:

2x=140

JulsSmile [24]2 years ago

3 0

Answer:

140

Step-by-step explanation:

Let the number be represented by x. You are given ...

(3/5)x = 42

Multiplying by 10/3 gives ...

(10/3)(3/5)x = (10/3)(42)

2x = 140 . . . . the value of twice the number

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Alisha asked 120 students what kind of pet they liked the most. Exactly 45% of the students said they liked dogs best. What was

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2 years ago

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To convert a capacity of 8.7 gallons to quarts which ratio could you multiply by

guajiro [1.7K]

A- 4 quarts over 8.7 gallon

B- 1 gallon over 4 quarts

C- 8.7 gallons over 4 quarts

D- 4 quarts over 1 gallonUpdate: Remember that 1 gallon = 4 quarts

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2 years ago

Use the given data to construct a box plot and identify the 5-number summary. Eleven different second-year medical students at B

Galina-37 [17]

Answer:

$Min =120, Max= 150$

The first quartile can be calculated with this data:

130, 135, 140, 120, 130, 130

And the middle value is:

$Q_1 = \frac{140+120}{2}=130$

The median is the value in the 6th position from the dataset ordered and we got:

$Median= 135$

The third quartile can be calculated with this data:

135 140 140 143 144 150

And the middle value is:

$Q_3 = \frac{140+143}{2}=141.5$

The five number summary for this case:

Min. 1st Qu. Median Mean 3rd Qu. Max.

120.0 130.0 135.0 135.6 141.5 150.0

The boxplot is on the figure attached

Step-by-step explanation:

We have the following data given:

130, 135, 140, 120, 130, 130, 144, 143, 140, 130, 150

If we sort the values on increasing order we got:

120 130 130 130 130 135 140 140 143 144 150

The minimum and maximum are:

$Min =120, Max= 150$

The first quartile can be calculated with this data:

130, 135, 140, 120, 130, 130

And the middle value is:

$Q_1 = \frac{140+120}{2}=130$

The median is the value in the 6th position from the dataset ordered and we got:

$Median= 135$

The third quartile can be calculated with this data:

135 140 140 143 144 150

And the middle value is:

$Q_3 = \frac{140+143}{2}=141.5$

The five number summary for this case:

Min. 1st Qu. Median Mean 3rd Qu. Max.

120.0 130.0 135.0 135.6 141.5 150.0

The boxplot is on the figure attached

8 0

3 years ago

11. A customer purchases a stroller and packs of diapers from a store. The table shows the total

bixtya [17]

Answer:

f(x) = 25x + 400

Step-by-step explanation:

Here, we want to find the relationship between the number of diaper packs and the total cost

From what we have in the options, we can see a linear relationship;

Since it is a linear relationship, it can be modeled using the equation;

y = mx + b

where m is the slope and b is the y-intercept

From what we have, we can identify the following parts;

where x represents number of diaper packs and f(x) or y represents total cost

The points identifiable are as follows;

(2,450) , (6,550) and (10,650)

The slope will be;

(550-450)/(6-2) = 100/4 = 25

So we have the equation partially as;

y = 25x + b

To get b, we can use any of the points

Let’s use (2,450)

Thus, we have

450 = 25(2) + b

b = 450 - 50

b = 400

So the equation is;

y = 25x + 400

Thus;

f(x) = 25x + 400

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2 years ago

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