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4 years ago

Estimate using a rate per 100 of 74% of 315. 89% of 195

1 answer:

3 0

1. Given numbers:
74 % of 315
89% of 195

now, let’s solve the first given numbers:
=> 74% of 315
=> 315 is the 100%
Let’s convert 74% into decimals
=> 74% = .74
=> 315 * .74 = 233.1, the value of 74% of 315
Let’s solve the second given:
=> 89% of 195
where 195 is the 100%
=> 89% = .89
=> 195 * .89
=> 173.55, the value of 89% of 195

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Help please! Could you explain it too?

Anettt [7]

Answer:

a) not proportional

b) proportional; k = $-\frac{3}{5}$

Step-by-step explanation:

a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).

Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.

Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.

b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.

y = -(3/5)x fits with y = kx, with k being -3/5

3 0

3 years ago

What is the growth factor of the following example? Assume time is measured in the units given. Water usage is increasing by 3%

sammy [17]

At a 3% increase you would use 1.03 * 1000 L = 1030 L next year

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3 years ago

Find the quotient 22,080 ÷ 24?

Nikolay [14]

Answer:920

Step-by-step explanation:

plug it in a calculator

4 0

3 years ago

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Justin got a sack of jelly beans in 5 different colors. Half of them were red, 1/6 were green, 1/6 were yellow, 1/12 were orange

sergiy2304 [10]

Answer:

Red beans =36
Green beans = 12
Yellow beans = 12
Orange beans =6
Black beans = 6

Step-by-step explanation:

If we assume that "x" is the total number of beans:

Red beans: x/2
Green beans: 1/6 (x) = x/6
Yellow beans: 1/6 (x) = x/6
Orange beans: 1/12 (x) = x/12
Black beans = 6

So, the sum of all the beans:

x/2 + x/6 +x/6 +x/12 +6 =x

Multiplying each term by 12:

(12) x/2 + (12)x/6 + (12)x/6 + (12)x/12 + (12)6 = (12)x

6x +2x+2x+x+72=12x

Isolating "x":

72 =12x -6x-2x-2x-x

72=x

Replacing the value of x in each equation of each bean:

Red beans: x/2: 72/2 =36
Green beans: 1/6 (x) = x/6= 72/6 = 12
Yellow beans: 1/6 (x) = x/6=72/6 = 12
Orange beans: 1/12 (x) = x/12 = 72/12=6
Black beans = 6

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3 years ago

it takes jada 1 1/2 hours to mow her lawn. it takes kam half as long to do hers. how long does it take for kam to mow her lawn.

vlabodo [156]

It should take kam 45 minutes to mow her lawn.... I think

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3 years ago

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