3 years ago

Solve using substitution y=x-5 5x-9y=17

Mathematics

1 answer:

aniked [119]3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

What is the length of AE 1. 17.1 2. 23.39 3. 22.9 4. 43.39

jonny [76]

I hope this helps you

17,1/17,1+20=20/20+AE

17,1/37,1=20/20+AE

171/371=20/20+AE

20+AE=20.371/171

20+AE=43,39

AE=23,39

4 0

3 years ago

Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. the

NeTakaya

$n_1=25, n_2=25\\ \bar{X_1}=35.5, \bar{X_2}=33\\ s_1=3, s_2=4$

Pooled Combined Variance $s_p=12.5$

Test Statistic:

$t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

$t=\frac{\left(35.5-33\right)}{12.5\sqrt{\frac{1}{25}+\frac{1}{25}}}$

$\left|t\right|=0.01414$

Degrees of freedom = $n_1+n_2-2=25+25-2=48$

$\alpha =0.05$

$t-Critical =t_{\alpha /2, n_1+n_2-2}=t_{0.025, 48}=-2.0206 \\Table value=|t|=2.0206\\|t|=2.0206$

The table value is greater than the calculated value.

Thus we accept H0.

8 0

3 years ago

A kitchen sink faucet streams 0.5 gallon of water in 10 seconds. Which faucet will fill a 3 gallon container faster?

SOVA2 [1]

60 secounds, or 1 minute

7 0

3 years ago

What is the answer (4×-12)+(-x+7)

Bogdan [553]

Answer:

x-41

Step-by-step explanation:

use the foil method

7 0

3 years ago

Read 2 more answers

Please solve all and work needs to be shown ❤️❤️

Alex73 [517]

1).

a=bh

=(13)(9)

=117in^2

2).

A=1/2h(b1+b2)

=1/2(14)(15+9)

=168cm^2

3).

A=1/2d1d2

=1/2(18)(11)

=99in^2

4 0

3 years ago