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Alekssandra [29.7K]
3 years ago
11

If (x+2) 2=49, then x+2=7. true or false?

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Answer:

False

Step-by-step explanation:

Given

(x + 2)² = 49 ( take the square root of both sides )

x + 2 = ± \sqrt{49} = ± 7 ← note plus or minus

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What is 6 1/4 x 3 3/5
aliya0001 [1]

Answer:

Step-by-step explanation:

Change mixed fraction to improper fraction. Then reduce to lowest term if possible.

6 1/4 x 3 3/5 = 25/4 * 18/5    = 25* 18 /4*5

                    = 5 * 18 / 4    {giving by 5th table}

                    = 5* 9 /2        { giving by 2nd tables}

                   = 45/2  

8 0
3 years ago
Point H is between G and I. If HG = 8x + 7, HI = 3x - 2, and GI = 38, what would be the length of GH ?
AVprozaik [17]

Answer:

let's see what to do...

Step-by-step explanation:

H is between G and I.

G I = G H + H I

38 = 8 x + 7 + 3x - 2

38 = 11 x + 5

subtract the sides of equation minus 5

38 - 5 = 11 x + 5 - 5

33 = 11 x

divided the sides of equation by 11

33 ÷ 11 = 11 x ÷ 11

3 = x

So the lenght of (G H) is :

8 x + 7 -----¢ 8 (3) + 7 = 24 + 7 = 31

And we're done.

Thanks for watching buddy good luck.

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8 0
3 years ago
susan surveys 20 people in her math class to find out the most popular movie. 5 students say star wars if the are 200 students i
Eva8 [605]
5 out of 20 like Star Wars so what value (x) should like Star Wars out of 200. Set up a proportion comparing the two.

x= # of people in 7th gr who like Star Wars

5/20= x/200
cross multiply

(5*200)= (20*x)
1000= 20x
divide both sides by 20

50= x


ANSWER: 50 people in the 7th grade should like Star Wars.

Hope this helps! :)
8 0
4 years ago
Read 2 more answers
-4x-5y-z=18<br> -2x-5y-2z=12<br> -2x+5y+2z=4
arsen [322]

Answer:7

7

Step-by-step explanation:

6 0
4 years ago
Consider △ABC. Triangle A B C is shown. Angle B C A is a right angle. The length of hypotenuse A B is 13, the length of B C is 1
bija089 [108]

Answer:

<em>22.62°</em>

Step-by-step explanation:

Considering △ABC.  If angle B C A is a right angle, then;

m<BCA = 90 degrees

Given also

AB = 13

BC = 12

AC = 5.

According to SOH, CAH TOA;

Sin <B = AC/AB

Cos <B = BC/AB

Substitute the given values

Sin B = 5/13

B = arcsin(5/13)

B = 22.62

Cos B = 12/13

B = arccos (12/13)

B =22.62

<em>Hence the angles that make sinB = cosB is 22.62°</em>

6 0
3 years ago
Read 2 more answers
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