1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
likoan [24]
4 years ago
7

Jake was 4 times as old as Kelly 5 years ago. Their total age is 60 now. How much older is Jake than Kelly?​

Mathematics
1 answer:
tatyana61 [14]4 years ago
8 0

Answer:

5 years ago

Let Kelly's age be x

Jake's age is 4x

5 years later

Kelly's age is x + 5

Jake's age is 4x+5

The sum of both their ages is 60. The equation will be

x + 5 + 4x + 5 = 60

5x + 10 = 60

5x = 60 - 10

x = 50/5 = 10

So Kelly is (10 + 5) 15 years old.

Jake is (4*10 + 5) = 45 years old

You might be interested in
I AM IN A HURRY!!!!!
Butoxors [25]

Answer:

A

Step-by-step explanation:

Because 2 is greater than 3

3 0
3 years ago
Evaluate the expression.<br><br> (13^2 - 12^2) ÷ 5​
otez555 [7]
Answer:

5

Step-by-step explanation:

(13^2 - 12^2) ÷ 5

(169 - 144) ÷ 5

25 ÷ 5

5
5 0
2 years ago
Find the slope of the curve r=cos(2theta) at theta=pi/6.. . Must this be solved parametrically? If so, why?
lara31 [8.8K]

By converting into parametric equations,

<span><span>x(θ)=r(θ)cosθ=cos2θ<span>cosθ
</span></span><span>y(θ)=r(θ)sinθ=cos2θsinθ</span></span>

By Product Rule,

<span>x'(θ)=−sin2θcosθ−cos2θsinθ</span>

<span>x'<span>(π/2)</span>=−<span>sin(π)</span><span>cos<span>(π/2)</span></span>−<span>cos(π)</span><span>sin<span>(π/2)</span></span>=1</span>

<span>y'(θ)=−sin2θsinθ+cos2θcosθ</span>

<span>y'<span>(π/2)</span>=−<span>sin(π)</span><span>sin<span>(π/2)</span></span>+<span>cos(π)</span><span>cos<span>(π/2)</span></span>=0</span>

So, the slope m of the curve can be found by

<span>m=<span>dy/dx</span><span>∣<span>θ=<span>π2
</span></span></span>= <span><span>y'<span>(π/2)/</span></span><span>x'<span>(π/2)
</span></span></span></span>=0/1

=0

I hope my answer has come to your help. Thank you for posting your question here in Brainly.

6 0
4 years ago
Indicate the answer choice that best completes the statemer
Troyanec [42]

Answer:

25

Step-by-step explanation:

-25 to 0 is 25 and 25 to 0 is 25

Opposite of -25 is 25

So lettter d

7 0
3 years ago
Solve the following eqation: 4m - 12 = 0
OLEGan [10]

Answer:

m=3

Step-by-step explanation:

Move the 12 over to the other side so it will be 4m=12, then divide each side by 4 to get m=3

8 0
3 years ago
Read 2 more answers
Other questions:
  • Keith has 4 dogs. I have 3 times as many dogs as keith. How many dogs do I have?
    8·2 answers
  • When conducting the vertical line test, how many times should the vertical line intersect
    9·1 answer
  • You want path 1 to be a continuous distance of 1.5 km from the center of the habitat 1) path one represents what mathematical ob
    7·2 answers
  • Can someone answer this and explain how they got the answer? I am really confused.
    11·1 answer
  • What is the missing statement on the proof?
    14·1 answer
  • Find the value of expression m(m-n) for m=3 and n=1<br><br><br> I need the ANSWER ASAP
    9·1 answer
  • A jar contains 86 marbles of which 65 are blue 14 are red and the rest are green what is the ratio of blue marbles to green marb
    9·1 answer
  • 90×10 4<br><br><br> please help me guys
    9·1 answer
  • URGENT!!!!!!!! PLEASE HELP ASAP TIMED!!!!!!!!!!!!!!! HELP!!!!!!!!!!!!!!!!!
    11·1 answer
  • There are 15 students in the class and 8 are boys. What is the ratio of girls to students in the room?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!