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
Anvisha [2.4K]
3 years ago
15

4w^2+49=-28w solve for w plz answer

Mathematics
1 answer:
boyakko [2]3 years ago
3 0

Move all terms to one side

4w^2 + 49 + 28w = 0

Rewrite 4w^2 + 49 + 28w in the form a^2 + 2ab + b^2, where a = 2w and b = 7

(2w)^2 + 2(2w)(7) + 7^2 = 0

Use the Square of Sum: (a + b)^2 = a^2 + 2ab + b^2

(2w + 7)^2 = 0

Take the square root of both sides

3w + 7 = 0

Subtract 7 from both sides

2w = -7

Divide both sides by 2

<u>w = -7/2</u>

You might be interested in
Can someone help me with 16 and 20? If you’re supposed to write a contrapositive and inverse, but the word not is already in the
Dmitry_Shevchenko [17]
Since 2 'not's cancel out, 16's contrapositive is 'If the light will go on, then the fuse has not blown'. In addition, the inverse would be 'If the fuse has not blown, then the light will go on'. I challenge you to do 20 using this information!
4 0
3 years ago
The bus will leave norfolk, VA at 6:00
aniked [119]
Time = distance / speed
t = 350/50
t = 7 hrs
arrival time at New York City is 1 pm. on Thursday
3 0
3 years ago
The length of a rectangle is twice its width. The Perimeter is 42 cm. Find the length of each side.​
lakkis [162]

Answer:

A) L = 2*W

B) 2L + 2W = 42

We'll put Equation A) into B)

2*2W + 2W = 42

4W + 2W = 42

6W = 42 cm

Width = 7 cm

Length = 14 cm

Step-by-step explanation:

4 0
3 years ago
What does 5/6 mean in math <br> p.s 5/6 in fraction
SOVA2 [1]

In math the fraction 5/6 means 5 and 6 tenths.

8 0
3 years ago
Pooja's plant began sprouting 2 days before Pooja bought it, and she had it for 98 days until it died. At its tallest, the plant
r-ruslan [8.4K]

Solution:

Total number of Days that Pooja's plant survived= 2 + 98 = 100 Days=(t)

Longest Height obtained by plant = 30 cm= h

As the two , i.e number of Days lived by plant and it's longest height obtained are directly proportional.

We will solve it by unitary method.

100 Days = 30 cm

1 cm =  Days

If height of the plant is h cm ,and  amount of time taken is t days, then

h(t) cm = ,for t=0,1,2,3,4,5,6....we get different values of h.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Please help me answer the questions in the picture
    10·1 answer
  • If a=14 and b=14, then a=b what algebraic property is illustrated above?
    7·1 answer
  • Use the distributive property in two different ways to find the product of 127 and 32.
    13·2 answers
  • the population of a bacteria culture doubles in number every 12 minutes. the ratio of the number of bacteria at the end of 1 hou
    8·2 answers
  • PLZ HELP ME WITH MEH 7th GRADE MATH
    10·1 answer
  • How to find the square root of 5x-25=0
    8·1 answer
  • In the casino game of roulette, a gambler can bet on which of 38 numbers the ball will land when the roulette wheel is spun. On
    8·1 answer
  • 56+64 GCF Ladder methoud
    15·1 answer
  • 14. Write a description of the rule (x,y) (x + 10, y + 8)
    5·2 answers
  • Last week Justin and his roommates ate 1/3 of a carton of yogurt, and this week they ate 5/6 of a carton. How much more yogurt d
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!