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3 years ago

Savannah is 9 years older thanDevante. The sum of their ages is 53. How old are Savannah and Devante?

Mathematics

1 answer:

pickupchik [31]3 years ago

6 0

Answer:

Devante is 23 and Savannah is 32.

Step-by-step explanation:

We can set up a system of equations.

s - savannah's age

d - devante's age

s = d + 9

s + d = 53

Now we can substitute (d + 9) for s in the second equation.

(d + 9) + d = 53

2d + 9 = 53

2d = 46

d = 23

To find Savannah's age, we just add 9 to Devante's age. (plugging in 23 for d)

23 + 9 = 32

s = 32

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The school cafeteria has 285 cartons of juice in stock. Each day a total of 60 cartons are sold. If the x is the number of days

shutvik [7]

Answer:

285-60x

Step-by-step explanation:

I'm not sure if that's a function rule but you can solve for x from that expression.

285-60x

Subtract 285

-60x=-285

Divide by -60 on both sides

X= 4.75

Hope this helped :/

4 0

3 years ago

Country A has a growth rate of 3.4% per year. The population is currently 4,118,000, and the land area of Country A is 29,000

Eduardwww [97]

Answer:

time period is 260.57 years

Step-by-step explanation:

given data

growth rate = 3.4 % = 0.034

population = 4118000

area P = 29000000000 square yard

to find out

time period that one person for every square yard of land need

solution

we will apply here population growth formula that is

total population P = initial population × $e^{rt}$ ..............1

here r is rate of growth and t is time period and

we consider here initial population is current population

so put value in equation 1 to get t

29000000000 = 4118000 × $e^{0.034t}$

take ln both side

ln 7042.25 = ln $e^{0.034t}$

8.8596 = 0.034 t

t = 260.57

so time period is 260.57 years

7 0

3 years ago

Is 76 pounds of Christina's body weight comes from water about how much does Christina weigh

Ghella [55]

If 90% of bodies are water weight, then we have 10% left.

76+10% = 83.6.

83.6 total.

8 0

3 years ago

If I roll two six-sides dice, what is the probability that the sum of the numbers that show up on the dice is 3 or less?

liq [111]

Answer:

1/12

Step-by-step explanation:

first we have to find all the possibilities of getting a sum of 3 or less: 1+1 or 1+2 and we count the second combination 2 times because the numbers can be on either of the dices so we have a total of 3 possibilities. all the possible pairimg of dice are 6*6=36 because each dice has 6 sides and we can get either of them. so the probability would be the chance of getting a sum of 3 or less divided by all the diff combination which equals 3/36 or 1/12 which is roughly around 8.3%

4 0

2 years ago

Convert the following 250cm to m

dmitriy555 [2]

100 cm = 1m

1 cm = 1/100

250 cm = 1/100*250

= 2.5m

This is Right answer...

4 0

3 years ago