3 years ago

. Mariam picks 9 2/20 kilograms of oranges. She gives 2 1/4 kilograms to her mother.

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

a) 6 17/20

b) 10 31/60

Step-by-step explanation:

a) 9 2/20 - 2 1/4 = 137/20 = 6 17/20

b) 6 17/20 + 3 2/3 = 631/60 = 10 31/60

You might be interested in

Solve the equation and write a reason for each step 4x+9=-3x+2

postnew [5]

Answer:

-1

Step-by-step explanation:

4x+9=-3x+2

=> 7x=-7 move all x to left side and numbers to right side by changing + to - or - to +

x=-1

7 0

3 years ago

Read 2 more answers

Melissa has a student dictionary on her desk. Her dictionary contains 75 pages. In this dictionary, more words start with the le

Radda [10]

Hhhhhhhhhhhhhhhhhhhhhhhhhh

3 0

3 years ago

A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure anti

Brums [2.3K]

$\bf \begin{array}{lcccl} &\stackrel{solution}{gallons}&\stackrel{\textit{\% of }}{antifreeze}&\stackrel{\textit{gallons of }}{antifreeze}\\ \cline{2-4}&\\ \textit{1st brand}&x&0.65&0.65x\\ \textit{2nd brand}&y&0.90&0.9y\\ \cline{2-4}&\\ mixture&40&0.8&32 \end{array}~\hfill \to \begin{cases} x+y&=40\\ \boxed{x}=40-y\\ \cline{1-2} 0.65x+0.9y&=32 \end{cases} \\\\[-0.35em] ~\dotfill$

$\bf \stackrel{\textit{substituting in the 2nd equation}}{0.65\left( \boxed{40-y} \right)+0.9y=32}\implies 26-0.65y+0.9y=32 \\\\\\ 26+0.25y=32\implies 0.25y=6\implies y=\cfrac{6}{0.25}\implies \blacktriangleright y=24 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since we know that}}{x=40-y\implies }x=40-24\implies \blacktriangleright x=16 \blacktriangleleft$