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3 years ago

Share R72 the ratio is 5:4

Mathematics

1 answer:

galben [10]3 years ago

7 0

Answer:

40, 32

Step-by-step explanation:

Ratio = 5 : 4

Shares are = 5x , 4x

5x + 4x = 72

9x = 72

x = 72/9

x = 8

5x = 5 * 8 = 40

4x = 4 *8 = 32

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Jim HOMEWORK Algebra June 3rd

Andrej [43]

Answers:

b) Two way table
b) Categorical variable
d) Relative Frequency Table
c) Association
b) The max noise level is 1.5 dB per thousand people

===================================

Explanation:

As the name suggests, we have 2 dimensions to the table. Along the left is one variable, and the top is another variable. This helps us lay out all the possible outcomes in a visual organized way.
There's not much to talk about here. The name pretty much speaks for itself. Each category is basically like a separate bin or name.
Frequency refers to the count of something (eg: 30 people have a hat) while relative frequency is how that count is in relation to the total (eg: 10% of the group has a hat). Relative frequencies can be expressed as fractions, decimal form, or percentage form. It will depend on what your teacher wants.
We consider the variables to be dependent if they are linked somehow. For example, if it rains, then its fairly likely the number of accidents on the road increases. The variables "it rains" and "number of accidents" are dependent and associate with each other.
The value 1.5 is the slope of the regression line. Note how the line is in the form y = mx+b with m = 1.5; the slope tells us the rate of change. Each time x goes up by 1, the predicted y value goes up by 1.5 decibels. In this context, it means that each time you add 1000 people, the predicted/estimated max noise level will increase by 1.5 dB. For context, a whisper is at about 30 dB, regular talking is about 50 dB, while a jet engine is about 140 dB.

3 0

3 years ago

What is an example of when you might need to use decimals and other rational numbers in everyday life?

nignag [31]

Well, in the store, when you buy something, there are decimals, also, speed limit for your car, and time, but that is not an exact thing for this question, because 60 can't be a decimal. you cant make it so you can show 60 seconds as a decimal without an irrational number. sometimes, the number just goes on forever.

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4 years ago

Naomi used a rectangle, a square, and a right triangle to form the following figure.

Savatey [412]

Answer:

B. 102 cm

Step-by-step explanation:

The first step would be to find the area of the whole figure and subtract the white area off.

So, to do that simply multiply the length x width to get the area of the whole figure.

20 x 6 = 120(area of the whole figure)

Next, 20-11 = 9 is the length of the figure and because the square has a side length of 3, the other side would also have to be 3.

3 x 3 = 9(area of the smaller square.

9-3=6

6-3=3

Area of triangle = Base x Height Divided by 2.

So, 3x6=18/2=9

9+9=18

Finally, subtract 18(total area of white smaller shapes) from 120 and you will get the final answer

102 cm.

8 0

3 years ago

Fabio and Gwen are saving money to buy a new gaming station. They need at least $510 to purchase the new gaming station. Gwen we

Phoenix [80]

Answer-

Set of constraints to model the problem are,

$12x+9y\geq 510$

$y \leq 2x$

$y \geq 25$

Solution-

x = the number of lawns weeded by Gwen,

y = the number of dogs walked by Fabio.

As, Gwen charges $12 each time she weeds a yard and Fabio charges $9 each time he walks a dog,

$\text{Earnings of Gwen} = 12x$

$\text{Earnings of Fabio} = 9y$

$\text{Total earning} = 12x+9y$

They need at least $510 to purchase the new gaming station, means they need $510 or more than $510.

The equation for this is,

$12x+9y\geq 510$

The number of dog walks that Fabio has scheduled is no more than twice the number of yards Gwen has scheduled to weed, means

y must be less than or equal to 2x.

The equation for this is,

$y \leq 2x$

Fabio will walk at least 25 dogs, means y must be greater than of equal to 25.

The equation for this is,

$y \geq 25$

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3 years ago

Read 2 more answers

9.9 x 10-3 in standard form.

Tema [17]

Answer:

Step-by-step explanation:

9.9 times 10= 99-3=96

7 0

3 years ago

Share R72 the ratio is 5:4​

Share R72 the ratio is 5:4