3 years ago

Y less than the product of 3 and z

Mathematics

1 answer:

faust18 [17]3 years ago

5 0

Answer:

Y<3Z

Step-by-step explanation:

Y<3*Z

Y<3Z

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bryan has some 3 cent stamps and some 4 cent stamps. what is the least number of stamps he can combine so the value of the stamp

SashulF [63]

Answer:

The least number of stamps required is $9$

Step-by-step explanation:

Let the number of $3$ cent stamps be $x$ and $4$ cent stamps be $y$

We have

$3x+4y=33$

The minimum number is obtained when more $4$ cent stamps are used

Here $y$ cannot be greater than $8$ since $\frac{33}{4}$

Substitute $y=8$

$3x+4\times 8=33\\\\3x=1\\\\x=\frac{1}{3}$

Not possible since $x$ is not a fraction

Substitute $y=7$

$3x+4\times 7=33\\\\3x=5\\\\x=\frac{5}{3}$

Not possible since $x$ is not a fraction

Substitute $y=6$

$3x+4\times 6=33\\\\3x=9\\\\x=\frac{9}{3}\\\\=3$

Possible

Hence minimum number of stamps is

$=x+y\\\\=3+6\\\\=9$

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2 years ago

Which expression represents "5 times the sum of 4 and y?"

Mkey [24]

Answer:

5 x (4+y)

Step-by-step explanation:

8 0

2 years ago

I need a break down of the answer in fraction form

Flauer [41]

Umm what do you mean?

6 0

2 years ago

Matt and Cat win £120 on the lottery and decide to share the winning ratio 1:2

8_murik_8 [283]

The way to work out how much each person gets is to find out how much one part is worth.

We can do this by adding the ratio (1:2) which gives us 3.

Divide £120 by 3 parts and you get £40 as one part.

Because the ratio is one part : two parts, Matt gets £40 and Cat gets £80.

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3 years ago

Read 2 more answers

If i- -1, what is the value of ; 3? -1 O i 0 1 0 -

Whitepunk [10]

$i=\sqrt[]{-1}$ $\begin{gathered} i^2=(\sqrt[]{-1})^2 \\ i^2=-1 \end{gathered}$ $\begin{gathered} i^3=i^2\times i \\ i^3=-1\times i \\ i^3=-i \end{gathered}$

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7 months ago