All categories

4 years ago

Solve the equation

Mathematics

1 answer:

kondor19780726 [428]4 years ago

4 0

4 1/5 + B = 9 3/5

21/5 + B = 48/5

B = 27/5

B = 5 2/5

Letter C is the correct answer!

Hope this helps! ;)

You might be interested in

A triangle has a perimeter of 165cm the first side is 65 cm less than twice the second side the third side is 10 cm less than th

katrin2010 [14]

Answer:

The sides of the triangle are:

Second side = 60 cm

First side = 55 cm

Third side = 50 cm

The perimeter equation can be given as:

$4s-75=165$

Step-by-step explanation:

Given:

Perimeter of triangle = 165 cm

First side = 65 cm less than twice the second side

Third side = 10 cm less than the second side

To find length of each side and write the equation that represents the perimeter of triangle.

Solution:

Let length of second side be = $s$ cm

First side will be given as = $(2s-65)$ cm

Third side will be given as = $(s-10)$ cm

Perimeter of triangle = Sum of all sides

Thus, perimeter can be given as:

⇒ $First\ side+ Second\ side+Third\ side$

⇒ $2s-65+s+s-10$

Simplifying by combining like terms.

⇒ $4s-75$

We know the perimeter of triangle = 165 cm

So, the perimeter equation can be given as:

$4s-75=165$

Solving for $s$ .

Adding 75 both sides.

$4s-75+75=165+75$

$4s=240$

Dividing both sides by 4.

$\frac{4s}{4}=\frac{240}{4}$

$s=60$

Thus, the sides of the triangle are:

Second side = 60 cm

First side = $2(60)-65$ = 55 cm

Third side = $60-10$ = 50 cm

5 0

3 years ago

If cosť = 13 and sin 0

shusha [124]

Answer:

cos13=0.97 and sin0=0

Step-by-step explanation:

cos(13)

put in calculator and get 0.97

and do the same for sin(0).

sin(0)

3 0

3 years ago

Rachel is 1.5 times as heavy as her cousin, Kayla

kkurt [141]

Is there more info to this?

3 0

3 years ago

Solve the following system for all solutions:

Burka [1]

Answer:

then

−

and

Step-by-step explanation:

7 0

3 years ago

Does the function f(x) = 2x^2− 6x + 9 have a minimum or a maximum? Identify its value.

exis [7]

Answer:

minimum value of function is $\frac{45}{8}$ .

Step-by-step explanation:

Given function represents a parabola.

Now, here coefficient of $x^{2}$ is positive , so the parabola will be facing upwards and thus the function will be having a minimum.

Now, as we know that minimum value of a parabolic function occurs at

x = $\frac{-b}{4a}$ .

Where , b represents the coefficient of x and a represents the coefficient of $x^{2}$ .

here, a = 2 , b = -6

Thus $\frac{-b}{4a}$ = $\frac{6}{8}$

= $\frac{3}{4}$

So, at x = $\frac{3}{4}$ minimum value will occur and which equals

y = 2× $\frac{9}{16}$ - $\frac{18}{4}$ + 9 = $\frac{45}{8}$ .

Thus , minimum value of function is $\frac{45}{8}$ .

4 0

3 years ago