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4 years ago

What is the sum of 2 4/5 + 1 3/9 =

Mathematics

2 answers:

Westkost [7]4 years ago

5 0

2 4/5= 14/5 1 3/9=12/9
14/5= 126/45 12/9=60/45
126/45+60/45=186/45
186/45= 4 6/45

Sergeu [11.5K]4 years ago

5 0

The answer is 4 and 2/15 You have to change the numbers so that they both have a common denominator, add them, then simplify. If you thought this answer was helpful, please mark it as Brainliest! I would greatly appreciate that!

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When ms. morley was three times as old as jennie, they were seven years younger than they are now. now Ms morkie is twice as old

rjkz [21]

They are now 14 and 28 because 14 minus 7 is 7 and 28 minus 7 is 21.... 7 times 3 is 21 and 14 times 2 is 28

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3 years ago

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Jamie and Stella are saving money to sign up for a school trip to Washington, D.C. In order to sign up for the trip, they must p

sveticcg [70]

Answer:

Part 1: 25x ≥ 600

Part 2: 15y ≥ 600

Part 3: y ≤ 40

Explanation:

Verbal statements must be translated into algebraic expressions, equations or inequalities.

1. Money earned by Jamie washing cars for $25 each

Let x represent the number of cars Jaime washes.

2. Money earned by Stella making pecan pies for $15 each

Let y represent the number of pies she makes

3. Constraint on the number of pies that Stella can make because she only has enough supplies to make 40 pies.

Write an inequality using the symbol ≤, since y can take any integer value up to 40.

y ≤ 40

4. First question:

Part 1: Write a constraint (an inequality) to represent how much money Jamie needs for his trip

25x ≥ 600

5. Second question:

Part 2: Write a constraint (an inequality) to represent how much money Stella needs for her trip.

15y ≥ 600

6. Third question

Part 3: Write a constraint (an inequality) to represent the limitations of Stella's supplies.

From step # 3

y ≤ 40

7. Conclusion

You can solve the inequalities fo find whether Stella can or not afford the trip:

Solve for the inequalities that represent Stella's situation:

15y ≥ 600

y ≥ 600 / 15

y ≥ 40

From step 6: y ≤ 40

The solution set is the intersection of the two solutions:

y ≥ 40 ∩ y ≤ = 40 = 40.

Interpretation: Stella will be able to make 40 pies, which represents a revenue of $ 15 / pie × 40 pie = $ 600, so she will be able to make the trip.

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3 years ago

Please help 10 points for one question Please don’t answer if you don’t know

Ivahew [28]

Answer:

Yes.

Step-by-step explanation:

They are similar by the AA (Angle-Angle) Similarity Theorem.

Angle P is congruent to Angle P,

and another angle congruency is <Q and <S OR <R and <T by the

Corresponding

Angle Congruency Theorem.

With two pairs of congruent angles, we can say that Triangle PQR and Triangle PST are similar by the AA Similarity Theorem.

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2 years ago

Prove that the value of expression 9^7 + 3^12 is divisible by 90.

aleksklad [387]

Answer:

3^10

Step-by-step explanation:

9^7 + 3^12

Replace 9 with 3^2

(3^2)^7 + 3^12

We know that a^b^c = a^(b*c)

3^(2*7) + 3^12

3^14 +3^12

Factor out 3^12

3^12 (3^2+1)

3^12 (9+1)

3^12(10)

But we need 90 not 10

3^10 * 3^2 (10)

3^10 *9 (10)

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3 years ago

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What's the number in the green box

marishachu [46]

Answer:

Kinda confusing but, I think it is

a=7

b=9

c=19

d=7

sorry it took a while it was confusing and plz give brainliest

Step-by-step explanation:

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3 years ago