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3 years ago

10

Can I get help on B please

1 answer:

gladu [14]3 years ago

6 0

13889.122 pounds didn’t do it In standard

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Mandy has $2.25 credit on her mobile phone. It costs $0.10 to send a text message. What is the largest amount of text messages s

Brilliant_brown [7]

Answer:

22.5

Step-by-step explanation:

since 2.25 divided by 0.10 is 22.5 so she can message 22.5 friends

8 0

2 years ago

Using mathematical induction prove whether or not the following statement is true for all positive integers n, or show why it is

aniked [119]

Base case: For $n=1$ , the left side is 2 and the right is $2\cdot1^2=2$ , so the base case holds.

Induction hypothesis: Assume the statement is true for $n=k$ , that is

$2+6+10+\cdots+4k-2=2k^2$

We want to show that this implies truth for $n=k+1$ , that

$2+6+10+\cdots+4k-2+4(k+1)-2=2(k+1)^2$

The first $k$ terms on the left reduce according to the assumption above, and we can simplify the $k+1$ -th term a bit:

$\underbrace{2+6+10+\cdots+4k-2}_{2k^2}+4k+2$

$2k^2+4k+2=2(k^2+2k+1)=2(k+1)^2$

so the statement is true for all $n\in\mathbb N$ .

5 0

3 years ago

a table was listed $400 after discount.And the net price was $450.what is the rate discount and marked price?

Rama09 [41]

Answer:

Your answer

Discount rate = 11.11%

Mark it as Brainlist. Follow me for more answer.

Step-by-step explanation:

5 0

3 years ago

There are 9 quilts with 18 yards . How many yards would be required for 10

pychu [463]

Hello!

First, you set up a proportion : quilts / yards = 9 / 18 = 10 / x
Then, you solve for x.

x = 20

Hope this helps! If you have any further concerns, feel free to let me know!

8 0

3 years ago

Maria's cat eats less than 1 cup of food each day. Her cat eats one-third of what Maria's dog eats plus half of a cup. What simp

mart [117]

Answer:

$d < \frac{3}{2}x$

Step-by-step explanation:

Represent a cup with x; the cat with c and the dog with d

From the first statement, we have:

$c < x$

From the second, we have:

$c = \frac{1}{3}d + \frac{1}{2}x$

Required

Express d in terms of x

We have:

$c = \frac{1}{3}d + \frac{1}{2}x$ and $c < x$

Merge both expressions to give:

$\frac{1}{3}d + \frac{1}{2}x < x$

Collect Like Terms

$\frac{1}{3}d < x - \frac{1}{2}x$

$\frac{1}{3}d < \frac{1}{2}x$

Multiply both sides by 3

$3 * \frac{1}{3}d < \frac{1}{2}x * 3$

$d < \frac{3}{2}x$

6 0

3 years ago