2 years ago

The total cost of 1 pencil and 2 erasers is £8, and the total cost of 2 pencils and 4 erasers is £20, as shown below:

Mathematics

1 answer:

Paul [167]2 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

The 2 equations are

x + 2y = 8 → (1)

2x + 4y = 20 → (2)

You might be interested in

A cone has a diameter of 3 inches. The cone holds 12 cubic inches of water, to the nearest inch what is the height of the cone?

tatiyna

C is the answer hope this helps

7 0

3 years ago

What feature of the box and whisker plot does the IQR describe

Oksanka [162]

The IQR tells you how spread out the "middle" values are. It can also be used to figure out if there are any outliers.

5 0

3 years ago

Equivalent expression

Nataly_w [17]

7(x+8) could work for that

8 0

2 years ago

Round to the nearest hundredth.<br> 29.995

Nastasia [14]

Answer:

30.00

Step-by-step explanation:

Hope this helps!

5 0

2 years ago

Read 2 more answers

If M is the midpoint of XY, find the coordinates of X if M(-3,-1) and Y(-8,6)

vova2212 [387]

$\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
X&({{ a}}\quad ,&{{ b}})\quad 
% (c,d)
Y&({{ -8}}\quad ,&{{ 6}})
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)$

$\bf \left( \cfrac{-8+a}{2}~,~\cfrac{6+b}{2} \right)=\stackrel{M}{(-3,-1)}\implies 
\begin{cases}
\cfrac{-8+a}{2}=-3\\\\
-8+a=-6\\
\boxed{a=2}\\
----------\\
\cfrac{6+b}{2}=-1\\\\
6+b=-2\\
\boxed{b=-8}
\end{cases}$

5 0

2 years ago