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3 years ago

Can you help me please

Mathematics

1 answer:

Gwar [14]3 years ago

7 0

Answer:

I'm pretty sure it's A.

Step-by-step explanation:

The formula is y=mx+b,

Where m is the slope

And b is the y intercept

You listed it with the numbers y= 2/5x - 1

So we know the y intercept is -1

We know the slope is 2/5, witch is 2 up and five to the right, due to rise over run.

So the correct graph is A.

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Serena has 3 3/5sq meters of wrapping paper for presents. Her grandmother has 1 1/2sq meters of wrapping paper. How much wrappin

levacccp [35]

Answer:

Total wrapping papers Serena and her grandmother = 51/10

Step-by-step explanation:

Serena's wrapping paper for parents:

$3\frac{3}{5}=\frac{18}{5}$ sq meters

Grandmother's wrapping paper:

$1\frac{1}{2}=\frac{3}{2}$ sq meters

In order to determine the combined wrapping papers for both Serena and grandmother, all we need is to add both.

i.e.

Total papers = Serena's wrapping paper + Grandmother's wrapping paper

$=\frac{18}{5}+\frac{3}{2}$

$=\frac{36}{10}+\frac{15}{10}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}$

$=\frac{36+15}{10}$

$=\frac{51}{10}$

Therefore, total wrapping papers Serena and her grandmother = 51/10

3 0

3 years ago

The difference of two positive numbers is 7 and the sum of their squares is 109. Find the numbers.

Ray Of Light [21]

Answer:

$Numbers\ are\ 58\ and\ 51.$

Step-by-step explanation:

The the numbers are $x\ and\ y$ .

Difference:

$Difference\ of\ numbers=7\\\\x-y=7....................eq(1)$

Sum:

$Sum\ of\ numbers=109\\\\x+y=109...........................eq(2)$

Solve $eq(1)$ and $eq(2)$ .

$eq(1)+eq(2)\\\\x-y+x+y=7+109\\\\2x=116\\\\x=58\\\\Now\ from\ equation\ 1\\\\x-y=7\\\\y=x-7\\\\y=58-7\\\\y=51$

7 0

3 years ago

1 ) $45, the markup is 20%. 2) 1.25 the markup is 80% 3) 150. the markdown is 40%

baherus [9]

Hi there! I can help you with these! For these types of questions, all you have to do is that if there is a markup, multiply by one hundred something to get the new price, because you're including the original price and the markup. For example, if there is a 75% markup on something, you multiply by 175% (1.75). Or, if there is a markdown, basically multiply by the remaining percentage. For example, if the markdown is 35%, you multiply the original price by 65% (0.65), because that is the amount of the price that it's on sale for. With that being said, if you do this correctly, here are the answers:

1. $54
2. $2.25
3. $90

Hopefully if you're talking about the markup or markdown from these prices, those are your answers.

8 0

3 years ago

I need help ASAP

ra1l [238]

Answer:

x =y-3 x=y-3 x=y-3 x=3

2 (y-3) + y= 12 => 3y= 18 => y= 6 => y=6

Step-by-step explanation:

6 0

2 years ago

Isolate for r, d = 2r

e-lub [12.9K]

Answer:

D/2=r

Step-by-step explanation:

Since we want r to be by itself what we can do is divide 2 on both sides so 2 can cancel out on 2r and when you divide on both sides your left with d/2=r

5 0

3 years ago