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Doss [256]
3 years ago
10

Laura is 12 years old witch 6/7 of her brothers age how old is her brother

Mathematics
1 answer:
sweet [91]3 years ago
3 0

Answer:

14

Step-by-step explanation:

12:6=2

12+2=14

so her brother it's 14 years old

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Cara has $25 to buy dry pet food and treats for the animal shelter. A pound of dog food cost $2 and treats are $1 apiece. If she
nordsb [41]
<span>If dog food costs $2 a pound and Cara buys 9 pounds, her expenditure on dog food is 9 x 2. This makes $18. If she has a total budget of $25 and spends $18 on dog food, she has $7 left over for treats (25 - 18 = 7). At $1 each, she can buy up to 7 treats.</span>
5 0
2 years ago
The population of Brazil was 162,300,000 in 1995. It was growing at a rate of about 2% per decade. Predict the population, to th
stiv31 [10]

Answer:

The population is 168,900,000 to the nearest hundred thousand

Step-by-step explanation:

In this question, we are tasked with calculating the population of Brazil given its population in 1995 and her growth rate per decade.

Mathematically, we use an exponential function to calculate this population.

This can be written as P = I(1 + r)^n

where P is the population in 2015 which we are looking for,

I is the initial population which is 162,300,000

r is the rate of increase per decade given as 2% = 2/100 = 0.02,

n is the number of times between the years we are expecting this growth. The difference between the years 2015 and 1995 is 20 years which signifies 2 decades(1 decade is 10 years). Thus our n is 2

We plug these values into the equation above;

P = 162,300,000(1+0.02)^2

P = 162,300,000(1.02)^2

P = 168,856,920 which is 168,900,000 to the nearest hundred thousand

7 0
3 years ago
Angie baked 100 cookies and 20 brownies. she wants to split them into equal groups for the bake sale. Each group must have the s
Pavlova-9 [17]
Angie can make 50 groups of cookies and brownies.
3 0
2 years ago
**Need to get this all done**<br><br> Evaluate functions from their graph<br><br> g(3)=??
sesenic [268]

Answer:

4

Step-by-step explanation:

g(x) is the graph. g(3) is where the graph has a value of 3 for x.

5 0
3 years ago
A track and field playing area is in the shape of a rectangle with semicircles at each end . The perimeter of the track is to be
MAVERICK [17]
We can let the radius of the semi circles be r and x can be the length of the rectangle.
The perimeter will be Perimeter = 2x + 2pr = 1200
The area of the rectangle is Area = x(2r)
 Once we solve the perimeter equation, you get x = 600.
Put this into the area equation and you get Area = (600 - pr)(2r)
The maximum then gives r = 95. 493 and area 57, 295.8
Dimensions

Height is twice the radius or 190.986. Find base use equation x = 600 - p(95.493) = 300.

This means dimensions are 300 by 190.986 
5 0
3 years ago
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