All categories

3 years ago

Pleaseee I need help on this one too

Mathematics

1 answer:

erastova [34]3 years ago

5 0

I can't exactly see if the 10 at the end is negative, but I'm going to assume that it is.
10x - 6y = 8
5x - 10y = -10
= (2, 2)
} I hope this helped! {

You might be interested in

There were 578 piglets and 234 adult pigs in the warehouse building yesterday. Today, 126 piglets were sold, and 46 piglets will

natima [27]

Answer:

=406 piglets in the warehouse

Step-by-step explanation:

578-126=452

452-46=406

5 0

2 years ago

How many solutions does the equation 3x − 7 = 4 + 6 + 4x have? Two Zero Infinitely many One

sleet_krkn [62]

Answer:

one solution

Step-by-step explanation:

3x − 7 = 4 + 6 + 4x

Combine like terms

3x-7=4x+10

Subtract 3x from each side

-7=x+10

Subtract 10 from each side

-17 =x

There is one solution

4 0

3 years ago

Which representation has a constant of variation of -2.5

Neporo4naja [7]

Answer:

See explanation

Step-by-step explanation:

The constant of variation is found using the slope formula:

$\frac{y_2-y_1}{x_2-x_1}$

The given relation is

X : -2 , -3, -4, -5

Y : -5, -7.5,-10,-12.5

We can use any two ordered pair to find the constant of variation.

Using (-2,-5) and (-3,-7.5), we have

$m=\frac{-7.5--5}{-3--2} =\frac{-2.5}{-1} =2.5$

The constant of variation is 2.5

We need to repeat this for all the options to identify the one with -2.5 as slope.

unfortunately, you did not provide the remaining options.

6 0

3 years ago

Read 2 more answers

Sally went school shopping she had a budget of 10.00 she bought a pen for 1.75 and a paper for 1.33 her change was 6.08 how much

irakobra [83]

Answer:

$0.84

Step-by-step explanation:

1. find total cost of both the pen and paper

$1.75 + $1.33 = $3.08

2. find the amount Sally spent

$10 - $6.08 = $3.92

3. find cost of ruler

$3.92 - $3.08 = $0.84

4 0

4 years ago

A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a

TEA [102]

Answer: Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

$\mu_x= np$

$\mu_x= 100\times 1/5$

$\mu_x= 20$

Now, the standard deviation, $\sigma_x= \sqrt{n\times p\times (1-p)}$

$\sigma_x= \sqrt{100\times 1/5\times 4/5}$

$\sigma_x= \sqrt{16}$

$\sigma_x= 4$

Thus, First option is correct.

6 0

3 years ago