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
Pepsi [2]
3 years ago
7

Grandpa's age is 6 years less than 6 times juniors age. their sum of their age is 78.

Mathematics
2 answers:
NISA [10]3 years ago
5 0
6n-6 = Grandpa
n = junior

6n-6+n = 78
   +6        +6
7n = 84
/7      /7
n = 12

6(12)-6 = Grandpa
72-6= 66

Junior  is 12 years old, Grandpa's age is 66 years old
Colt1911 [192]3 years ago
3 0
Grandpa is 66, Junior is 12. 
Grandpa= 6x Juniors age - 6
Grandpa + Junior = 78
78-J = 6J - 6
78 + 6 = 6J + J
84 divided by 7 and  7J divided by 7. 
J = 12, so grandpa must be 66. 
You might be interested in
A ball is thrown in the air from a ledge. Its height in feet is represented by
Strike441 [17]
D.6 is your answer
Hope this helps!!!!
4 0
3 years ago
Is the perimeter of the composite figure equal to the sum of the perimeters of the individual figures? Explain by selecting all
DIA [1.3K]

Answer: No the third one , you have to find the distance around the figure

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLS PLS HELP ME THIS IS DUE TONIGHT
nika2105 [10]
I’m so confused?? what’s the question?
5 0
3 years ago
Read 2 more answers
Which expression is equivalent to 6t⁻⁷x 3 t⁵
aleksandrvk [35]
6t^-7 * 3t^5 = 1/6t^7 * 3t^5
6 0
2 years ago
**A rock dropped from a 100 foot tower.
mars1129 [50]

Answer:

2.83 s

Step-by-step explanation:

We are given that

h(t)=-16t^2+10t+100

When a rock reached the ground then h(t)=0

-16t^2+10t+100=0

16t^2-10t-100=0

Using quadratic formula

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

t=\frac{10\pm\sqrt{(-10)^2-4\times 16\times (-100)}}{2(16)}

t=\frac{10\pm\sqrt{100+6400}}{32}

t=\frac{10+\sqrt{6500}}{32}=2.83

t=\frac{10-\sqrt{6500}}{32}=-2.2

Time cannot be negative .Therefore, negative value of t can not be possible.

Hence, the rock takes 2.83 sec to reach the ground.

8 0
3 years ago
Other questions:
  • The measure of angle θ 7pi/6 is . The measure of its reference angle is °, and sin θ is
    14·2 answers
  • -1/6(x-24)&lt;4<br><br> Please answer!!!
    7·1 answer
  • Point M is on line segment LN . given LM = 5 and LN = 12, determine the lenght MN
    14·1 answer
  • 12) If the square root of 2 is 1.41 then find the square root of 50?​
    7·2 answers
  • What type of function would you use to model the height a bull thrown in the air travel over a period of time ?
    9·1 answer
  • Which solid figure has 4 faces that are triangles and 1 face that is a rectangle?
    14·1 answer
  • an airplane has a distance of 9.2 miles from the runway when it begins to land. its landing speed is 157 mph write an question i
    12·1 answer
  • How to simplify an improper and proper fraction​
    9·1 answer
  • A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test.
    8·2 answers
  • 20(6x4) Can you pls help me
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!