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Alisiya [41]
3 years ago
15

What are the solutions of the quadratic equation (x + 3)2 = 49? x = –2 and x = –16 x = 2 and x = x = 4 and x = –10 x = 40 and x

= –58
Mathematics
2 answers:
steposvetlana [31]3 years ago
5 0
Im gonna assume you are solving for x, the equation (x + 3)2 = 49 x is equal to 21.5 or 21 and 1/2. however the rest aren’t equations they’re just x = number and there isn’t much to do with that
xxTIMURxx [149]3 years ago
4 0

Answer:

x = 4 and x = -10

Step-by-step explanation:

expand the squared brackets

(x +3) (x+3) = 49

Distribute them

x^2 + 3x +3x +9 = 49

bring the 49 to the other side to make one side 0, make sure to change signs

x^2 + 3x +3x +9 - 49 = 0

combine like terms

x^2 + 6x -40 = 0

factor what numbers multiply to get -40 that also add/subtract to get +6

(x - 4) (x + 10)

turn it into an equation to get the answer to x

x - 4 = 0              x + 10 = 0

x = 4                    x = -10

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-3(×+2)=12 what is x equal to
velikii [3]

Answer:

x=-6

Step-by-step explanation:

Follow along:

1. Distribute the -3 to those within the parenthesis.

-3x-6=12

2. Move the whole numbers to one sides, isolate the variable.

-3x=18

3. Divide both sides by -3

x=-6

7 0
3 years ago
Jada was using square stickers that were 3/4in long to decorate the spine of a photo album. The spine is 10 and 1/2in long. If s
nevsk [136]

Answer:

13

Step-by-step explanation:

Given:

  1. Square stickers that were 3/4 in long
  2. The spine is 10 and 1/2 in long

If she laid the stickers side by side without gaps or overlaps so the number of sticker to cover the length of the spine:

\frac{The length of the spine}{the length of the sticker}

10 : \frac{3}{4} ≈13  

She needs 13 stickers cover the length of the spine

7 0
3 years ago
Read 2 more answers
In a model of a ship,the mast is 9cm high,while the mast of the actual ship is 12m high.if the length of the ship is 28m,how lon
grandymaker [24]

Answer:

21cm

Step by step:

Scale : 9cm :12m

Therefore 1m = 9/12 cm

28m= 9/12 *28 = <u>21 cm</u>

7 0
3 years ago
-f(x) = 2x + 6 Find f(-4)
jenyasd209 [6]
The answer is 1 Bcuz u have to first plug in -4 for f then solve the equation by adding like terms and dividing
4 0
3 years ago
Look at the picture below to answer the question!! plss
laila [671]

Answer:

x = 15.3°

Step-by-step explanation:

Trig identities:

sin(x)=\dfrac{O}{H} \ \ \ \ \ cos(x)=\dfrac{A}{H} \ \ \ \ \ tan(x)=\dfrac{O}{A}

where

  • x = angle
  • O = side opposite the angle
  • A = side adjacent the angle
  • H = hypotenuse

sin(46)=\dfrac{11}{x}\\\\\implies x=\dfrac{11}{sin(46)}\\\\\implies x=15.3

8 0
2 years ago
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