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mafiozo [28]
3 years ago
7

Find the value of given expression

ormula1" title=" \sqrt{99 - ( - 1)} " alt=" \sqrt{99 - ( - 1)} " align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
GarryVolchara [31]3 years ago
8 0

Answer:

10

Step-by-step explanation:

Note that when there are two negative signs directly next to each other, you are adding:

\sqrt{99 - (-1)} = \sqrt{99 + 1} = \sqrt{100}

Simplify:

\sqrt{100} = \sqrt{10 * 10} = 10

10 is your value for the given expression

OlgaM077 [116]3 years ago
6 0

Answer:

  • ± 10

Step-by-step explanation:

  • \sqrt{99 - (-1)} = \sqrt{99 + 1} = \sqrt{100} = ± 10
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Solve this problem T=u+v/2 solve for u
AfilCa [17]

Answer:

<h2>u = 2T - v</h2>

T =  \frac{u + v}{2}

Cross multiply

We have

2T = u + v

u + v = 2T

Move v to the right side of the equation to make u stand alone

We have the final answer as

<h3>u = 2T - v</h3>

Hope this helps you

5 0
3 years ago
The perimeter of a triangle with two equal sides is 50 cm. If its base were lengthened by 3 cm and each leg were shortened by 4
Nataly [62]

Answer:

Base of the original triangle is 12 cm.

Step-by-step explanation:

Let base of triangle be x  

two equal legs  of triangles by y

therefore perimeter of triangle

                       x+y+y = 50 or x+2y =50

according to the question

 if base is x+3 and leg is y-4

then both are equal

   that is x+3 = y-4

            y-x = 7 or y =x+7

   x+2y =50

   x+2(x+7) = 50

    x+2x +14 =50

     3x +14 =50

     3x = 50 -14

      3x = 36

      x = 12

therefore base of the original  triangle is 12 cm                    

6 0
3 years ago
How do I write the sum of 24+40 as a product of the greatest common factor and another sum
9966 [12]
Answer is 64 and a factor is 6/4 .
7 0
4 years ago
A rock is projected directly upward from ground level with an initial velocity of 90 ft/sec. After how many seconds will it retu
Nastasia [14]
For this case we have the following equation of motion:
 h (t) = -16t ^ 2 + 90t
 Equaling the equation to zero we have:
 -16t ^ 2 + 90t = 0
 We look for the roots of the polynomial:
 (t) (- 16t + 90) = 0
 t1 = 0 (initial position)
 t2 = 90/16 = 5.625 s (time it reaches the ground again)
 Answer:
 
it will return to the ground in:
 
t = 5.625 s
4 0
4 years ago
Una recta que pasa por los puntos A (2,1) y B (6,3) y otra recta pasa por A y por el punto (0,y) ¿Cuánto vale y, si ambas rectas
ASHA 777 [7]

The translation of the question given is

A line that passes through the points A (2,1) and B (6,3) and another line passes through A and through the point (0, y). What is y worth, if both lines are perpendicular?

Answer:

y = 5

Step-by-step explanation:

Line 1 that passes through A (2,1) and B (6,3)  

Slope (m1) = 3-1/6-2 = 2/4 = 1/2

y - 1 = \frac{1}{2} ( x -2)

2y - 2 = x- 2

y = \frac{x}{2}

Line 2 passes through A (2,1) and (0,y)

slope (m2) =\frac{y-1}{-2}

Line 1 and Line 2  are perpendicular

m1*m2 = -1

\frac{1}{2}  * \frac{y-1}{-2} = -1

y-1 = 4

y = 5

slope = -2

Equation of Line 2

Y-1 = -2(x-2)

y -1 = -2x +4

2x +y = 5

7 0
3 years ago
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