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
Aleks [24]
3 years ago
12

Bobby has a sister named Abbey. Bobby’s sister Abbey is 4 years older than 1/3 of Bobby’s age. a) Write an expression for Abbey’

s age in terms of Bobby’s age, b. b) How old is Bobby if Abbey is 7 years old?
Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer:

Step-by-step explanation:

a=1/3b + 4

7=1/3b+4

3=1/3b

b=9

You might be interested in
Someone help me please.
Maru [420]

Answer:

3

Step-by-step explan

1 x 4/2 + 1

4/2 + 1

4 divide by 2 is = 2

2+1 = 3

so the value of 1 x b/2 + 1 is = to 3

4 0
3 years ago
Read 2 more answers
Complete the equation <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B20%7D%20%20%3D%20%20%20%20%5C%3A%20%20%5C%3A%20%20%5Csq
devlian [24]

Step-by-step explanation:

I'm not sure about it

Try it find examples

6 0
3 years ago
How to solve this? Is the question correct? ty :)
bezimeni [28]

Answer:

The proposition is true.

Step-by-step explanation:

Now we proceed to demostrate that expression given is true by algebraic means:

1) \frac{x^{-1}+y^{-1}}{x^{-1}}+\frac{x^{-1}-y^{-1} }{y^{-1}} Given

2) \frac{y^{-1}\cdot (x^{-1}+y^{-1})+x^{-1}\cdot (x^{-1}-y^{-1})}{x^{-1}\cdot y^{-1}}   \frac{a}{b} + \frac{c}{d} = \frac{a\cdot d+b\cdot c}{b\cdot d}

3) \frac{x^{-1}\cdot y^{-1}+y^{-2}+x^{-2}-x^{-1}\cdot y^{-1}}{x^{-1}\cdot y^{-1}} Distributive property/a^{b}\cdot a^{c} = a^{b+c}

4) \frac{x^{-2}+y^{-2}}{(x\cdot y)^{-1}} Commutative, associative and modulative properties/Existence of additive inverse/a^{b}\cdot c^{b} = (a\cdot c)^{b}

5) [(x\cdot y)^{-1}]^{-1}\cdot (x^{-2}+y^{-2}) Commutative property/Definition of division

6) (x\cdot y)\cdot (x^{-2}+y^{-2})         (x^{-1})^{-1}

7) x^{-1}\cdot y + x\cdot y^{-1} Distributive property/Associative property/a^{b}\cdot a^{c} = a^{b+c}

8) (x^{-1}\cdot y^{-1})\cdot y^{2} + (x^{-1}\cdot y^{-1})\cdot x^{2}  Modulative property/Existence of additive inverse/a^{b}\cdot a^{c} = a^{b+c}

9) (x^{-1}\cdot y^{-1})\cdot (x^{2}+y^{2}) Distributive property

10) (x\cdot y)^{-1}\cdot (x^{2}+y^{2}) a^{b}\cdot c^{b} = (a\cdot c)^{b}

11) \frac{x^{2}+y^{2}}{x\cdot y} Commutative property/Definition of division/Result

4 0
3 years ago
The product of two numbers is 48. their difference is 8. what are the two numbers?
MariettaO [177]
A) x * y = 48
B) x -y = 8

A) x = 48/y then substituting this into B)
B) 48/y -y = 8
B) 48 -y^2 = 8y
B) y^2 + 8y - 48 =0
x = 4  y = 12

12*4 = 48
12 -4 = 8



3 0
3 years ago
I really need help please
Lana71 [14]

Answer:

Step-by-step explanation:

We have two sides; the Adjacent and the Hypotnuse

Meaning we will use Cos

Cos = A/H

Cos X = 16/19

Use the inverse of Cos to find the angle

X = cos-1 (16/19)

X = 0.45499141546

X = 0.45

6 0
3 years ago
Other questions:
  • How many more shares in A&amp;D than shares in peer comms ltd. Would you be able to buy with $500 in year 2?
    12·1 answer
  • Fie triunghiul ABC isoscel cu AB=AC=3 cm daca mediatoarea laturi AC intersectat cu latura BC in M si perimetrul thriunghiului AM
    10·1 answer
  • Mary is the manager of a new clothing shop. The shop located in a new shopping mall and Mary wants to estimate the average daily
    6·1 answer
  • You and a friend sign up for a health club. It costs $50 to join, plus $20 a month. However, the first 100 customers can sign up
    15·1 answer
  • In September,there were 16 members in the music club. In October the number of members was 24.What was the percent increase from
    14·1 answer
  • There are 8 large bags of pretzels for a party. Arun uses bowls which hold 2/3 of a bag. How many bowls are needed?????
    12·1 answer
  • Please help me! geometry question!
    7·2 answers
  • Bob earns $1,825 per month as a clerk at Elm City Sporting Goods. How much does he earn in a year? Explain how you got your answ
    5·1 answer
  • Drag the phases into the box to match the expression
    15·1 answer
  • Find the measure of midsegment EF.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!