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2 years ago

Please help me. I don’t understand this either.

Mathematics

1 answer:

horrorfan [7]2 years ago

5 0

Answer:

It's B

Step-by-step explanation:

because each bracelet is $3 and 3 is a factor of 9 because 3x3 = 9 :)

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Dirk bought a set of stamps the number of stamps in the set is divisible by 2,3,5,6,and 9. Which set is it

Greeley [361]

The least common multiple in that set of numbers is 90.

Dirk bought a set of 90 stamps.

8 0

2 years ago

The cost of purchasing a bag of rice is partly constant and partly varies inversely as the square root of the number of people d

algol [13]

Answer:

(a) 160 Naira

(b) Undefined

Step-by-step explanation:

Given

Let:

$y \to$ cost of bag of rice

$x \to$ people demanding the bag

So, we have:

$y\ = \frac{k}{\sqrt x} + c$ ---- The variation

$y = 100; x = 36$

$y = 150; x = 144$

We have:

$y\ = \frac{k}{\sqrt x} + c$

When: $y = 100; x = 36$

$100 = \frac{k}{\sqrt {36}} + c$

$100 = \frac{k}{6} + c$ -- (1)

When: $y = 150; x = 144$

$150 = \frac{k}{\sqrt {144}} + c$

$150 = \frac{k}{12} + c$ --- (2)

Subtract (1) from (2)

$150 - 100 = \frac{k}{12} - \frac{k}{6} + c - c$

$50 = \frac{k}{12} - \frac{k}{6}$

Multiply through by 12

$600 = k - 2k$

$600 = -k$

$k = -600$

To solve for x, we have:

$100 = \frac{k}{6} + c$ -- (1)

This gives:

$100 = \frac{-600}{6} + c$

$100 = -100 + c$

$c = 100 + 100$

$c = 200$

So, the equation is:

$y\ = \frac{k}{\sqrt x} + c$

$y = -\frac{600}{\sqrt x} + 200$

Solving (1): y; when x = 225

We have:

$y = -\frac{600}{\sqrt x} + 200$

$y = -\frac{600}{\sqrt {225}} + 200$

$y = -\frac{600}{15} + 200$

$y = -40 + 200$

$y = 160$

Solving (2): x; when x = 200

We have:

$y = -\frac{600}{\sqrt x} + 200$

$200 = -\frac{600}{\sqrt x} + 200$

Collect like terms

$\frac{600}{\sqrt x} = 200 - 200$

$\frac{600}{\sqrt x} =0$

Cross multiply

$600 =0 * \sqrt x$

$600 =0$

<em>x is undefined</em>

7 0

2 years ago

A line has a slope of 3 and a y-intercept of 4. What is the equation of the line in

Kipish [7]

Answer:

General equation of a line:

$y = mx + b$

m is the slope

b is the y-intercept

Therefore, answer is:

${ \boxed{ \boxed{y = 3x + 4}}}$

4 0

2 years ago

Read 2 more answers

May someone assist me?

Ainat [17]

Answer:

Step-by-step explanation:

Let x be the missing segment

We will use the proportionality property to find x

24/16 = 42/x

Simplify 24/16

24/16= (4×6)/(4×4)= 4/6 = 3/2

So 3/2 = 42/x

3x = 42×2

3x = 84

x = 84/3

x= 28

5 0

2 years ago

Help!!! ( look at the picture)

Naddik [55]

Answer:

Step-by-step explanation:

Just add them lol

8 0

1 year ago