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sergeinik [125]
3 years ago
7

The sum of three numbers is 84. The second number is 2 times the third.The third number is 8more than the first. What are the nu

mbers?
Mathematics
1 answer:
Bingel [31]3 years ago
3 0

Answer:

let the the first number X,

second number be 2×(8x) or. 16x

third number be 8x

equation 1 ,

X + 16x + 8x = 84

or. 25x = 84

or. x = 84 ÷ 25 = 3.36

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School pennants cost $18 each. Ms.Lee says she will pay $146 for 7 pennants. Is her answer reasonable?
crimeas [40]

Well, all we have to do to figure out if Ms. Lee’s offer is reasonable is multiply the unit price ($18) by 7

18 x 7 = 126

Since she offered $146, she could actually purchase 8 pennants for $144

Therefore, her answer wouldn’t be reasonable

Hope this helps you

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3 0
3 years ago
At a grocery store you can purchase loose lemons at 2 for $0.99. You can also buy a bag of 6 lemons for $2.50. Which is the bett
vladimir2022 [97]

Answer:

Bag of lemon

Step-by-step explanation:

Given that:

Cost of loose lemon = $0.99 for 2

Cost of bag of lemon = $2.50 for 6

Calculating the cost per 1 for loose and bag of lemon (unit cost) ;

Loose lemon :

$0.99 /2 = $0.495

Bagged lemon :

$2.50 / 6 = $0.4167

Hence, since the unit cost of bagged lemon is lesser than loose lemon, then purchasing a bag of lemon is better

5 0
3 years ago
1. A population of tropical fish is decreasing at an annual rate of 6% per year. (a) Write an equation to represent the total po
Alinara [238K]
P(t) = Po(1 - 0.06)^t
where Po is the initial population.

Monthly rate of decrease = 6%/12 = 0.5%
3 0
3 years ago
For brett's birthday his mother gave out colorful birthday hats that were cone shaped. the opening of the bottom of the hat was
nika2105 [10]
The volume of cone is calculated by the formula V= \frac{1}{3} \pi R^2H, where H is a height of cone and R is a radius of the bottom.
In your case, R=3 cm and R=7 cm. Then V= \frac{1}{3} \pi* 3^2*7= \frac{63\pi}{3} =21\pi.
Answer: The volume of candy is 21π.
4 0
3 years ago
What’s is the output if the input is 10 ? Help please and thank u
Natalija [7]

Answer:

20

Step-by-step explanation:

locate 10 on the horizontal (x- axis), go vertically up to meet the line at (10, 20)

The corresponding output is the value on the vertical (y- axis )

That is the output is 20

8 0
3 years ago
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