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xenn [34]
3 years ago
7

kristen made half as many sundaes as Reese if they made thirty sundaes in all how many did Kristen make

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
5 0
Well, since half is when you divide something by 2, divide 30 by 2

Then, you get 15

So Kristen made 15 sundaes!

Hope this helped!
jok3333 [9.3K]3 years ago
5 0
Kristen made 10 sundaes because they cant have the same number of made sundaes and the total is 30 and 20+10=30 is correct so therefore kristen made 10 sundaes i think
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3 years ago
Please help me out with this..............
Andrews [41]

Answer:

C

Step-by-step explanation:

when x=0, y=0, so B is impossible

when X=2, Y=1,

and thus C is correct

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3 years ago
33 1/3 of 21 (finding the percent of a number)
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3 years ago
Question 4 (1 point)
Nostrana [21]

Answer:

The ball will hit the ground at 10 seconds and its maximum height is 1024 feet.

Step-by-step explanation:

Height of a mountain, h = 90 feet

Upward velocity of a ball, u = 64 ft/s

Its height as a function of time can be written by using the second equation of motion as follows :

f(x) = -16t^2 + 64t + 960 .....(1)

When it will hit the ground, f(x) = 0

-16t^2 + 64t + 960=0\\\\16(-t^2+4t+60)=0\\\\-t^2+4t+60=0

It is quadratic equation.

t = -6 s and t = 10 s

Neglecting -6 seconds, the ball will hit the ground at 10 seconds.

For maximum height,

Put f'(x) = 0

-32t+64=0\\\\\\t=\dfrac{64}{32}\\\\t=2\ s

Put t = 2 in equation (1)

f(2) = -16(2)^2 + 64(2) + 960\\\\=1024\ \text{feet}

Hence, the ball will hit the ground at 10 seconds and its maximum height is 1024 feet.

5 0
3 years ago
Huilan is 13 years younger than Thomas. The sum of their age is 41. What is Thomas's age?
stiv31 [10]

Answer:

27

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Step-by-step explanation:

Let's set Huilan's age to h and Thomas's age to t.

Since Huilan is 13 years younger than Thomas, we can write:

  • h = t - 13

The sum of both their ages is 41, so let's combine the variables h and t together.

  • h + t = 41

We said that h = t - 13, so substitute this value into the equation.

  • (t - 13) + t = 41

Combine like terms.

  • 2t - 13 = 41

Add 13 to both sides of the equation.

  • 2t = 54

Divide both sides of the equation by 2.

  • t = 27

Thomas's age is 27 years old.

Thank you L for helping me with this question :)

4 0
3 years ago
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