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
kirza4 [7]
3 years ago
13

Help me (2x+30)1/2 = x + 3

Mathematics
1 answer:
viktelen [127]3 years ago
5 0
The extraneous solution x=-7
the valid solution x=3
You might be interested in
X/6=9/20<br> What is the answer?
Whitepunk [10]

Step-by-step explanation:

\frac{x}{6}  =  \frac{9}{20}  \\

x \times 20 = 9 \times 6

20x = 54

x =  \frac{54}{20}  \\

x = 2.7

8 0
2 years ago
If the distance covered by an object in time t is given by s(t)=t^2+5t , where s(t) is in meters and t is in seconds, what is th
alisha [4.7K]

Answer:

E. 44 meters

Step-by-step explanation:

The function that models the distance covered by the object is

s(t)=t^2+5t

where s(t) is in meters and t is in seconds.

The distance covered by the object after 1 second is

s(1)=1^2+5(1)=6m

The distance covered by the object after 1 second is

s(1)=5^2+5(5)=50m

The distance covered between 1 second and 5 seconds is

50-6=44m

6 0
3 years ago
Mrs cunningham wants to use rubber tiles to cover the floor of an indoor playground
snow_lady [41]

Answer:

the unit cost per rubber tile is $$$$$$$$$$$$$6

Step-by-step explanation:

..

4 0
2 years ago
PLEASE HELP! In a word processing document or on a separate piece of paper, use the guide to construct a two column proof provin
hichkok12 [17]
PLEASE HELP! In a word processing document or on a separate piece of paper, use the guide to construct a two column proof proving that triangle RST is congruent to triangle RSQ given that RS ⊥ ST, RS ⊥ SQ, and ∠STR ≅ ∠SQR. Submit the entire proof to your instructor.

Given:
RS ⊥ ST
RS ⊥ SQ
∠STR ≅ ∠SQR

Prove:
△RST ≅ △RSQ

4 0
3 years ago
Read 2 more answers
The area of the shaded segment is 100cm^2. Calculate the value of r.
Reil [10]
Hello, 

The formula for finding the area of a circular region is: A=  \frac{ \alpha *r^{2} }{2}

then:
A_{1} = \frac{80*r^{2} }{2}

With the two radius it is formed an isosceles triangle, so, we must obtain its area, but first we obtain the height and the base.

cos(40)= \frac{h}{r}  \\  \\ h= r*cos(40)\\ \\ \\ sen(40)= \frac{b}{r} \\ \\ b=r*sen(40)

Now we can find its area:
A_{2}=2* \frac{b*h}{2}  \\  \\ A_{2}= [r*sen(40)][r*cos(40)]\\  \\A_{2}= r^{2}*sen(40)*cos(40)

The subtraction of the two areas is 100cm^2, then:

A_{1}-A_{2}=100cm^{2} \\ (40*r^{2})-(r^{2}*sen(40)*cos(40) )=100cm^{2} \\ 39.51r^{2}=100cm^{2} \\ r^{2}=2.53cm^{2} \\ r=1.59cm

Answer: r= 1.59cm
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the maximum number of intersection points between a quadrilateral and a triangle?
    11·2 answers
  • A drawer contains nine white paper clips five green paper clips and six red paper clips one paper clip is selected at random wha
    12·1 answer
  • How to prove this sum , the short answer type question ?
    6·1 answer
  • What is the domain of f/g, given f(x)=x+8 and g(x)=x-3?
    8·2 answers
  • Factor.
    14·1 answer
  • ANSWER THIS MATH QUESTION
    14·1 answer
  • The price of a car has been reduced from $19,500 to $12,870. What is the percentage decrease of the price of the car?
    13·2 answers
  • Boris currently has a savings account. He saves $25 per month.
    8·1 answer
  • What is the least common multiple of 10 and 27
    8·1 answer
  • 10 = -3 + x
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!