1)12-5x-4kx=y, solve for x

Look at the image to answer

xz_007 [3.2K]

Answer:

$441

Step-by-step explanation:

Find 30% of 450. (135)

Subtract that.

450 - 135 = 315 Discounted sale price.

Then, find 40% of 315. (126)

Add that.

315 + 126 = 441

4 0

3 years ago

Read 2 more answers

4/5m=28 can you help me solve this equation step by step?

Maslowich

Step-by-step explanation:

Step by step solution :

Step 1 :

4

Simplify —

5

Equation at the end of step 1 :

4

(— • m) - 28 = 0

5

Step 2 :

Rewriting the whole as an Equivalent Fraction :

2.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 5 as the denominator :

28 28 • 5

28 = —— = ——————

1 5

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

4m - (28 • 5) 4m - 140

————————————— = ————————

5 5

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

4m - 140 = 4 • (m - 35)

Equation at the end of step 3 :

4 • (m - 35)

———————————— = 0

5

Step 4 :

When a fraction equals zero :

4.1 When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

4•(m-35)

———————— • 5 = 0 • 5

5

Now, on the left hand side, the 5 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

4 • (m-35) = 0

Equations which are never true :

4.2 Solve : 4 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

4.3 Solve : m-35 = 0

Add 35 to both sides of the equation :

m = 35

One solution was found :

m = 35

4 0

3 years ago

Please help me out please

Arte-miy333 [17]

Answer:

B

Step-by-step explanation:

The red graph is a horizontal translation of 5 units left, followed by a reflection in the x- axis, of the black graph.

Given f(x) then f(x + a) is a horizontal translation of f(x)

• If a > 0 then shift to the left of a units

• If a < 0 then shift to the right of a units

Here the graph is shifted 5 units to the left, thus

f(x) → f(x + 5)

Under a reflection in the x- axis

a point (x, y ) → (x, - y )

Note the y- coordinate of the image is the negative of the original

Note that $\frac{y}{-1}$ = - y, thus

The equation of the red graph is

$\frac{y}{-1}$ = f(x + 5) → B

5 0

4 years ago

Standing on one side of the Mississippi River, you notice a tall tree directly across from you on the opposite bank. You walk 20

noname [10]

Answer:

4289.03 metres

Step-by-step explanation:

Given that standing on one side of the Mississippi River, you notice a tall tree directly across from you on the opposite bank. You walk 2000 meters along the bank and the tree is still visible, but at an angle of 65° to the bank

Visualise the right triangle formed by the river directly across in the first position , 2000 metres the distance walked along the bank and the line (here hypotenuse) joining you new position and the vertex opposite the bank

We have 65 degress angle has opposite side as width of river and adjacent side as 2000 m

Using trignometrical ratio

we get

$tan 65 = x/2000$ , where x is the width of river

$x = 2000 tan 65\\=4289.03$ metres

7 0

3 years ago

How to solve number 4

s2008m [1.1K]

Find the first semicircle area
Area semicircle can be determined by dividing the full area of circle by 2.
The first semicircle radius is 5 cm
semicircle area = 1/2 circle area
semicircle area = 1/2 × π × r²
semicircle area = 1/2 × 3.14 × 5²
semicircle area = 1/2 × 3.14 × 25
semicircle area = 39.25 cm²

Find the second semicircle area
Because the dimension of the second semicircle is congruent to the first semicircle, they have similar area measurement, 39.25 cm².

Find the quarter circle area
The area of quarter circle can be determined by dividing the full area of a circle by 4.
q circle = 1/4 × area of circle
q circle = 1/4 × π × r²
q circle = 1/4 × 3.14 × 10²
q circle = 1/4 × 314
q circle = 78.5 cm²

To find the entire area, add the area above together
area = first semicircle + second semicircle + q circle
area = 39.25 + 39.25 + 78.5
area = 157

The area of shaded region is 157 cm²

4 0

4 years ago