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2 years ago

Here are two simultaneous equations

Mathematics

2 answers:

forsale [732]2 years ago

6 0

1 and 7
2 and 6
3 and 5
4 and 4
5 and 3

Soo.. x = 5
And.. y = 3

jeka942 years ago

5 0

Step-by-step explanation:

Given -

Equations

x + y = 8
x - y = 3

To Find -

which pair of coordinates satisfies both equation

Now,

adding both equation, we get -

x + y + x - y = 8 + 3

2x = 11

x = 11/2

Now, substituting the value of x on x + y = 8, we get -

5.5 + y = 8

y = 8 - 5.5

Hence,

(5.5, 2.5) pair of coordinates satisfies both equations.

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Based on historical data, your manager believes that 41% of the company's orders come from first-time customers. A random sample

TEA [102]

Answer:

The probability that the sample proportion is between 0.35 and 0.5 is 0.7895

Step-by-step explanation:

To calculate the probability that the sample proportion is between 0.35 and 0.5 we need to know the z-scores of the sample proportions 0.35 and 0.5.

z-score of the sample proportion is calculated as

z= $\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } }$ where

p(s) is the sample proportion of first time customers
p is the proportion of first time customers based on historical data

N is the sample size

For the sample proportion 0.35:

z(0.35)= $\frac{0,35-0.41}{\sqrt{\frac{0.41*0.59}{72} } }$ ≈ -1.035

For the sample proportion 0.5:

z(0.5)= $\frac{0,5-0.41}{\sqrt{\frac{0.41*0.59}{72} } }$ ≈ 1.553

The probabilities for z of being smaller than these z-scores are:

P(z<z(0.35))= 0.1503

P(z<z(0.5))= 0.9398

Then the probability that the sample proportion is between 0.35 and 0.5 is

P(z(0.35)<z<z(0.5))= 0.9398 - 0.1503 =0.7895

6 0

3 years ago

Luis bought two pieces of wax to make candles. One piece weighed 3.49 kg, and the other weighed 4.71 kg. If wax costs $1.80 per

EleoNora [17]

(3.49+4.71)1.80=cost

(8.2)1.80=cost

14.76=cost

Luis spends $14.76 all together

8 0

3 years ago

Can someone give me the answers to this or how to find the answers to it?

faltersainse [42]

the discriminant formula is b^2-4ac

so plug the values from each equation into the formula and solve, the result is the value of the discriminant

if the number is negative, there are no real roots/x-int

if it is 0 there is one real root/x-intercepts

if it is positive it has 2 real roots/x-int

and to find the actual solutions you have to plug the values into the quadratic formula

6 0

3 years ago

19,432÷x=48 Remainder 232 (Plz help its for my hw that's due tmrw)

Neko [114]

Answer:

x = 404.83

Step-by-step explanation:

The given expression is :

19,432÷x=48 ...(1)

We need to find the value of x.

$\dfrac{19,432}{x}=48$

Cross multiplying both sides,

$19,432=48x$

Dividing both sides by 48

$\dfrac{19,432}{48}=x\\\\x=404.83$

So, the value of x is 404.83.

4 0

2 years ago

Read 2 more answers

How to estimate 96 Times 34 what is the answer

Marrrta [24]

When it says to estimate, I always think of doing it by hand to show work. So set it up like this:

So follow it out multiplying across 4*6 and 4*9 carrying over as needed to get it to look like this:

384

Do the same for the 3 to get this:

384

2880

Add 384+2880=3264

Your final answer is 3,264

6 0

2 years ago