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
shusha [124]
3 years ago
10

The square of sophie's age is 16 less than joanna's age. it is also the case that joanna's age is 8 times that of sophie. how ol

d is joanna?
Mathematics
1 answer:
mote1985 [20]3 years ago
5 0
Let s be Sophie's age. Then joanna is s²+16. Joanna is also 8s, if  Sophie is s. So:
s²+16=8s
s²-8s+16=0
(s-4)²=0
s=4
Sophie is 4; Joanna is 32
☺☺☺☺
You might be interested in
(t,-3) and (2,6); Slope = -1
tangare [24]
-1=\frac{Δy}{Δx}
-1=\frac{6-(-3)}{2-t}
t-2=9
t=11
4 0
3 years ago
Help me pleeeeeeeeeaze
kobusy [5.1K]

a(x+3) < 5x+15-x\\\\ax+3a < 5x+15-x\\\\ax+3a < 4x+15\ \ \ |-3a\\\\ax < 4x+15-3a\ \ \ \ |-4x\\\\ax-4x < 15-3a\\\\(a-4)x < 15-3a\\\\\text{The solution is all real numbers if}\ a-4=0\ \ \ |+4\\\\\boxed{a=4}\\\\\text{Check:}\\\\4(x+3) < 5x+15-x\\4x+12 < 4x+15\ \ \ \ |-4x\\12 < 15\ TRUE\to x\in\mathbb{R}

5 0
3 years ago
A court reporter is transcribing an accident report from Germany. The report states that the driver was traveling 80 kilometers
marusya05 [52]
Divide the speed value by 1.609,
1kilometer per hr=0.621mph
80kph=49.7097Mph
8 0
3 years ago
Read 2 more answers
Tammy and Wyatt are sales associates at the same used car dealership. Their supervisor is planning to promote the employee with
lisov135 [29]
I think the answer is D. The other answers are unreasonable. Wyatt would not get the promotion and just because Tammy's lowest value is bigger than Wyatt's doesn't mean that Tammy gets the promotion. The only reasonable answer is D.

7 0
3 years ago
Given two complementary angles, 3x and (x - 2). Find the value of x.
ohaa [14]

Answer:

x = 23°

Step-by-step explanation:

Note: Complementary angles measure 90°

3x + (x - 2)° = 90°

=> 3x + x - 2° = 90°

=> 4x - 2° = 90°

Add the additive inverse of -2 to both sides of the equation

i.e 4x - 2° + 2° = 90° + 2°

=> 4x = 92°

Divide both sides of the equation by the coefficient of x which is 4

=> 4x/4 = 92°/4

x = 23°

6 0
2 years ago
Other questions:
  • Which formula can be used to describe the sequence below?<br>27,9,3,1,...​
    14·1 answer
  • A coin dealer buys <br> a coin for $850 and sells it for $1190. Find the percent of change.
    12·1 answer
  • 10 The diagram shows a garden in the shape of a rectangle.
    10·1 answer
  • G use part 1 of the fundamental theorem of calculus to find the derivative of the function. sqrt(4+7t)
    8·1 answer
  • 6. Mr Wade works for 5 straight
    10·1 answer
  • Determine which postulate can be used to prove that the triangles are congruent. If it is not possible to prove congruence, writ
    9·1 answer
  • A cookie factory uses 3 bags of flour in each batch of cookies. The factory used 2 7/10 bags of flour yesterday. How many batche
    12·1 answer
  • EERS
    9·1 answer
  • Which equation represents a line passing through the points (8, 16) and (-1,-11)?
    8·1 answer
  • Rob saves £500 in his bank account.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!