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3 years ago

Help please I need this as soon as possible

Mathematics

2 answers:

kramer3 years ago

7 0

Answer:

The correct answer is B

y=2x+7

I am positive

Step-by-step explanation:

Taya2010 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

If you look at 0 for x, y is already 7. That is where the +7 comes from.

If you add 2 to every y for each x then you'd have 2x.

You might be interested in

Is 3(-4y) equivalent to 6-4y

Leokris [45]

3(-4y)=6-4y

-12y=6-4y

-8y=6

y=-3/4

So the two expressions are equivalent, if and only if y = -3/4.

5 0

3 years ago

Cedric and doug each had an equal amount of money. After cedric spent $35 and doug spent $28, the ratio of cedrics money to doug

uysha [10]

Answer:

Each of them had $49 at first.

Step-by-step explanation:

Given:

Cedric and Doug each had an equal amount of money.

Let the number of money they had at first be x

Cedric spent = $35

Doug spent = $28

Cedric Money left = $x-35$

Doug Money left = $x-28$

the ratio of Cedric money to Doug money was 2:3

Hence the expression can be made as;

$\frac{x-35}{x-28}=\frac{2}{3}$

Now by cross multiplication method we get;

$3(x-35)=2(x-28)$

Now we will use distributive property to elaborate the same;

$3x-105=2x-56$

Combining common terms we get;

$3x-2x=105-56$

Using Subtraction property we get;

$x= 49$

Hence $49 they each had at first.

8 0

3 years ago

Two friends, Alejandra and Mia, agreed to split the check at a restaurant. Alejandra ordered $12 worth of food and Mia ordered $

dedylja [7]

12+18=30 so together they have $30.00 in all.

6 0

3 years ago

what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed

kramer

Answer:

$P(x \le 21) = 0.69146$

Step-by-step explanation:

The missing parameters are:

$n = 64$ --- population

$\mu = 20$ --- population mean

$\sigma = 16$ -- population standard deviation

Required

$P(x \le 21)$

First, calculate the sample standard deviation

$\sigma_x = \frac{\sigma}{\sqrt n}$

$\sigma_x = \frac{16}{\sqrt {64}}$

$\sigma_x = \frac{16}{8}$

$\sigma_x = 2$

Next, calculate the sample mean $\bar_x$

$\bar x = \mu$

So:

$\bar x = 20$

So, we have:

$\sigma_x = 2$

$\bar x = 20$

$x = 21$

Calculate the z score

$x = \frac{x - \mu}{\sigma}$

$x = \frac{21 - 20}{2}$

$x = \frac{1}{2}$

$x = 0.50$

So, we have:

$P(x \le 21) = P(z \le 0.50)$

From the z table

$P(z \le 0.50) = 0.69146$

So:

$P(x \le 21) = 0.69146$

4 0

3 years ago

Round 125.3546 to 1 decimal place

Gekata [30.6K]

There are maybe like 1% of 125.3546

3 0

3 years ago

Help please I need this as soon as possible ​

Help please I need this as soon as possible