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3 years ago

Devaughn's age is two times Sydney's age. The sum of their ages is

Mathematics

2 answers:

blagie [28]3 years ago

8 0

Devaughn's age = d

Sydney's age = s

d = 2s

d + s = 15

2s + s = 15

3s = 15

s = 5

Sydney is 5 years old

leonid [27]3 years ago

4 0

5? Because 5x2 is 10 and 10+5 is 15.

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What is the answer to this math question 2 1/12-5 5/6

AleksandrR [38]

The solution is:

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4} \text{ or } -3.75$

Solution:

We have to solve the given expression

Given expression is:

$2\frac{1}{12} - 5\frac{5}{6}$

Let us first convert the mixed fraction to improper fraction

Multiply the whole number part by the fraction's denominator.

Add that to the numerator.

Then write the result on top of the denominator.

Thus we get,

$2\frac{1}{12} = \frac{2 \times 12 + 1}{12} = \frac{25}{12}$

$5\frac{5}{6} = \frac{ 5 \times 6 +5}{6} = \frac{35}{6}$

Thus the given expression becomes,

$2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{35}{6}$

Make the denominators same for easier calculations

$2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{35 \times 2}{6 \times 2}\\\\2\frac{1}{12} - 5\frac{5}{6} = \frac{25}{12} - \frac{70}{12}\\\\2\frac{1}{12} - 5\frac{5}{6} = \frac{25-70}{12}\\\\2\frac{1}{12} - 5\frac{5}{6} =\frac{-45}{12}$

Reducing to lowest terms, we get

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4}$

In decimal form, we get

$\rightarrow \frac{-15}{4} = -3.75$

Thus the solution is:

$2\frac{1}{12} - 5\frac{5}{6} = \frac{-15}{4} \text{ or } -3.75$

6 0

3 years ago

Without looking, Luke picks necklace beads from a bag of 52 beads. Half the beads are rough. The other half are smooth. There ar

xz_007 [3.2K]

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Step-by-step explanation:

Given

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favorable outcomes to select a blue bead is 13

Total outcomes are 52

Probability is given by

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2 years ago

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Mariulka [41]

Answer:

answer is D

Step-by-step explanation:

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2 years ago

What is the value of the expression 5^2 + 2^2?

leva [86]

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3 years ago

When you buy an item on which sales tax is charged,the total cost is calculated by the formula T=P+s/100p where T is the total c

Gennadij [26K]

Given:

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Putting T=14.77 and p=14 in given formula, we get

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Divide both sides by 14.

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Therefore, the tax rate is 5.5%.

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3 years ago