All categories

2 years ago

How to solve this?i can’t understand so can you explain

Mathematics

1 answer:

alexgriva [62]2 years ago

7 0

Answer:

a. Equation: 0.8x+30 = 1.2x+14

b. Solution: 40 Stickers

Step-by-step explanation:

"per sticker" means there will be a variable which will be how many stickers he buys next to the price and the fee is the amount of money that will be added onto the fee price.

Company A equation: 0.8x+30

Company B equation: 1.2x+14

You will set these equal to each other to find the number of stickers which cost the same for both companies, then solve for x by doing inverse operations.

0.8x+30 = 1.2x+14 [subtract 14 from both sides]

0.8x+16 = 1.2x [subtract 0.8x from both sides]

16 = 0.4x [divide 0.4 from both sides]

x = 40 [The solution is 40 stickers]

You might be interested in

What is the length of line segment BC with endpoints (Negative 4 3) and (Negative 4, Negative 4) as shown on the coordinate plan

aksik [14]

Answer

C 7

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

In the accompanying diagram of circle O, point O

densk [106]

The number of degrees in the first quadrant is 45 degrees.

<h3>Coordinates of a circle</h3>

The formula for calculating the angle in the first quadrant If the coordinates of point J are $(\frac{\sqrt{2}}{2}, \frac{\sqrt{2}}{2})$

$tan \theta = \frac{y}{x}\\tan \theta =\frac{\frac{\sqrt{2}}{2} }{\frac{\sqrt{2}}{2} }\\tan \theta =1\\\theta = tan^{-1}1\\\theta = 45^0$

From the calculation above the number of degrees in the first quadrant is 45 degrees.

Learn more on circles here: brainly.com/question/24375372

5 0

2 years ago

Find the volume of a cylindrical container,whose height is 21cm and diameter is 14cm?

Lena [83]

Answer:

1029 $\pi$

Step-by-step explanation:

Volume= $\pi$ x $(radius)^{2}$ x height = $\pi$ x $7^{2}$ x 21 = 1029 $\pi$

I hope it helps you!

4 0

2 years ago

Read 2 more answers

Bartolo is running a race. He determines that if he runs at an average speed of 15 feet/second, he can finish the race in 6 seco

Gelneren [198K]

Answer:

Step-by-step explanation:

the distance is 15•6 = 18•5 = 90 feet

so, time needed = 90/30 = 3 second

7 0

2 years ago

Work out the balance for £3000 invested for 3 years at 5% per annum

Paha777 [63]

It depends in the type on interest

Simple Interest
PxRxT
£3000 x 0.05 x 3 = £450
£3000 + £450 = £3450

Compound Interest
Px(1+R)^T
£3000 x (1 + 0.05)³ = £3472.875 = £3472.88

6 0

3 years ago