If ab = 5 and a + b =10 Evaluate a^2 + b^2

Answer:

Im going with B hope this helps

Step-by-step explanation:

Answer:

trice the number"s"

Step-by-step explanation:

is this   wht  u want ? like am i rght? if not pls delete my answer.

Answer:

Thrice a number

Three times the variable "s"

Step-by-step explanation:

Hope it helps!!!

Answer:

The solution of the given equations

x = 3 and y =-2.5

Step-by-step explanation:

Step(i):-

  x - 2y = 8 ..(i)

3x = 19 +4y ..(ii)

By using substitution method

substituting  x = 2y +8 in equation (ii)

 ⇒  3( 2y +8) = 19 +4y

⇒   6y +24 = 19 +4y

⇒  6 y - 4y = 19 - 24

⇒   2 y = -5

   [tex]y = \frac{-5}{2} = -2.5[/tex]

Step(ii):-

Substitute 'y' = -2.5 in equation (i) , we get

         x - 2y = 8

   ⇒  x - 2( [tex]\frac{-5}{2}[/tex]) =8

  ⇒  x = 8 -5

      x = 3        

Final answer:-

The solution of the given equations

x = 3 and y =-2.5

Answer:

d1=16

1/2×d1×d2=240cm²

1/2×16×d2=240

d2=240/8=30cm

the another diagonal is 30 cm

Answer:

I believe it is the last one

Step-by-step explanation:

Correct question is;

Caitlin purchased a prepaid phone card for $20. Long distance calls cost 7 cents a minute using this card. Catin used her card only once to make a long distance all the remaining credit on her card is $16.8. how many minutes did her call last?

Answer:

45 minutes 43 seconds

Step-by-step explanation:

We are told that she purchase the prepaid phone card for $20.

Now she has $16.8 after making the call.

Therefore;

Amount spent on the call = 20 - 16.8 = $3.2

We are told that the long distance call costs 7 cents per minute. Which is $0.07 per minutes

Thus, time spent = $3.2/$0.07 = 45.714 minutes or 45 minutes 43 seconds

Answer:

Step-by-step explanation:

25²-16²=369

369+x²=22²

x=10.72(correct to nearest tenth)

Answer:

Answer:

(-2,2)

Step-by-step explanation:

Original is (-1,1) so just multiply by 2 so (-2,2)

Answer:

NaNx10^-23

Step-by-step explanation:

=============================================================

Explanation:

There are two approaches.

The slightly longer approach will have us take 6% of 420 to get 0.06*420 = 25.20

So 25.20 is the amount of tax you pay on top of the original $420. The total bill is 420+25.20 = 445.20 dollars

--------------

The shortcut is to multiply 420 by 1.06 to get 420*1.06 = 445.20

The 1.06 multiplier indicates an increase of 6%

We can think of it it as 1.06 = 1 + 0.06 = 100% + 6%

Answer: Each shirt costs $1.25, and each hat costs $2.5.

Step-by-step explanation:

Let x= Cost per T-shirt, y = Cost per Hat.

As per given,

3x+3y=11.25        (i)

4x+2y=10             (ii)

Multiply 4 to equation (i)

12x+12y=45          (iii)

12x+6y= 30             (iv)

Eliminate (iv) from (iii), we get

6y= 15

⇒ y = 2.5

Put value of y in (i)

3x+3(2.5)=11.25

⇒3x+7.5=11.25

⇒3x= 3.75

⇒x= 1.25

Hence, each shirt costs $1.25, and each hat costs $2.5.

Answer:

lolll i love those games rn im playing one abt a lil guy on a bike

Answer: The second answer to the question is 7.2 + 6.

Step-by-step explanation:

Answer:

x=9

Step-by-step explanation:

Solve for x

(

x

+

2

3

x

)

−

1

3

(

x

+

2

3

x

)

=

10

Simplify

x

+

2

3

x

−

1

3

⋅

(

x

+

2

3

x

)

.

Tap for fewer steps...

Simplify each term.

Tap for more steps...

x

+

2

x

3

−

5

x

9

=

10

Find the common denominator.

Tap for more steps...

x

⋅

9

9

+

2

x

⋅

3

9

−

5

x

9

=

10

Combine fractions with similar denominators.

x

⋅

9

+

2

x

⋅

3

−

5

x

9

=

10

Subtract

5

x

from

x

⋅

9

.

Tap for more steps...

2

x

⋅

3

+

4

⋅

x

9

=

10

Multiply

3

by

2

.

6

x

+

4

⋅

x

9

=

10

Add

6

x

and

4

⋅

x

.

10

x

9

=

10

Multiply both sides of the equation by

9

10

.

9

10

⋅

10

x

9

=

9

10

⋅

10

Simplify both sides of the equation.

Tap for fewer steps...

Simplify

9

10

⋅

10

x

9

.

Tap for more steps...

x

=

9

10

⋅

10

Cancel the common factor of

10

.

Tap for fewer steps...

Cancel the common factor.

x

=

9

10

⋅

10

Rewrite the expression.

x

=

9

Answer:

x = 9

Step-by-step explanation:

Given

(x + [tex]\frac{2}{3}[/tex] x ) - [tex]\frac{1}{3}[/tex](x + [tex]\frac{2}{3}[/tex] x ) = 10 ← distribute parenthesis

x + [tex]\frac{2}{3}[/tex] x - [tex]\frac{1}{3}[/tex] x - [tex]\frac{2}{9}[/tex] x = 10

Multiply through by 9 ( the LCM of 3 and 9 ) to clear the fractions

9x + 6x - 3x - 2x = 90

10x = 90 ( divide both sides by 10 )

x = 9

Answer:

20%

Step-by-step explanation:

Answer:

Step-by-step explanation:

Total CARS = 35

Red CARS = 7

% of Red CARS = (red cars ÷ total cars)*100

% of Red CARS = (7÷35)*100

% of Red CARS = 20

Step-by-step explanation:

a x^2/4

b -x^2/4+3

c 4x^2

d -x^2

Answer:

8

Step-by-step explanation:

Answer:

The GCF is 8 I believe sorry if I'm wrong

Step-by-step explanation:

and if I'm wrong please correct me

Answer:

90-26=4x    x=16

Step-by-step explanation:

Answer:

x<8

Step-by-step explanation:

2x+5>3x-3

2x+8>3x

8>x

Answer:

n < 8

Step-by-step explanation:

Let n represent the unknown number.  Then:

2n + 5 > 3n - 3

Collecting like terms:

8 > n or n < 8

Answer:

the awnser should be. slow and fast

Answer:

first blank: 2

second blank: 2

Answer:

angle x=10

Step-by-step explanation:

Answer:

Step-by-step explanation: 10/2 = 5

20^2= x^2 + 5^2

400=x^2+25

x^2=375

x= 19.4

Answer:

h = 19.36 cm

Step-by-step explanation:

using Pythagorean theorem

20^2-5^2 = h^2

h^2 = 375

h = 19.36 cm

Answer:

Step-by-step explanation:

7/2 = t/28

t = 98 ft

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base.  The height of the tree is equal to 98 feet.

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base. it is given as,

[tex]\rm Tangent(\theta) = \dfrac{Perpendicular}{Base}[/tex]

where,

θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

The base is the adjacent smaller side of the angle θ.

Using the tangent function of the trigonometry, we can write the ratio of the height to the base will be equal because the angle of sun rays is the same for both.

Height of Tree /Shadow of Tree = Height of the biologist / Shadow of the biologist

Height of the tree/ 28 = 7/2

Height of the tree = (28×7)/2

Height of the tree = 98 feet

Hence, the height of the tree is equal to 98 feet.

Learn more about Tangent (Tanθ):

https://brainly.com/question/10623976

#SPJ2

Answer:

MN = 25

Step-by-step explanation:

If LN=45, then the addition of both quantities will be 45.

LN = 3x + 2 + x + 19

3x + 2 + x + 19 = 45

4x + 21 = 45

4x = 45 - 21 = 24

x = 6

Now that we found the value of "x", we can find the lenght of MN

MN = x + 19

MN = 6 + 19

MN = 25

Hope it was helpful ;)

Answer: MN = 25

Step-by-step explanation:

Since the length is already given we just add the equations equal to it.

45 =  3x + 2 + x + 19  Combine like terms

45 = 4x + 21               Subtract 21 from both sides

24 = 4x                       Divide by 4

x = 6

Now we plug x into the equation needed.

X + 19

6 + 19 = 25

If I am correct it is option C) 90/360

Answer: 3/300

Step-by-step explanation:

Answer:

y = 8       x= -16

Step-by-step explanation:

4x+26x = -6y =14

30x = 14

-6y = 14     x = 14- 30

y+= 14-6  

y = 8       x= -16