All categories

3 years ago

Help me please..........

Mathematics

1 answer:

romanna [79]3 years ago

5 0

Answer: <em>(-3; -11)</em>

Step-by-step explanation:

$\left \bigg \{ {\big{y=7x+10} \atop\big {y=-4x-23}} \right.\\\\7x+10=-4x-23\\7x+10-10=-4x-23-10\\7x=-4x-33\\7x+4x=-4x-33+4x\\11x=-33\\11x \div 11=-33 \div 11\\x=-3\\\\y=7x+10\\y=7 \times (-3)+10=-21+10=-11$

You might be interested in

Consider the graph of the function f(x)=-(2)^x + 4

AleksandrR [38]

I have linked a picture with the intervel.

3 0

1 year ago

Please help me due soon<br> Answer ASAP <br> Someone please do this right

ra1l [238]

Advice:

I've seen this around quite a bit. what image is it referring to? I cannot answer this because there is no image.

8 0

2 years ago

Describe how to estimate the product of 396 and 71. Please :)

balu736 [363]

You can round 396 to 400 and 71 to 70. then you just multiply them and get 28,000. :))

4 0

2 years ago

Since 2003 median home prices in Midvale, UT have been growing exponentially at roughly 4.7 % per year. If you had purchased a h

Kipish [7]

Answer:

The home would be worth $249000 during the year of 2012.

Step-by-step explanation:

The price of the home in t years after 2004 can be modeled by the following equation:

$P(t) = P(0)(1+r)^{t}$

In which P(0) is the price of the house in 2004 and r is the growth rate.

Since 2003 median home prices in Midvale, UT have been growing exponentially at roughly 4.7 % per year.

This means that $r = 0.047$

$172000 in 2004

This means that $P(0) = 172000$

What year would the home be worth $ 249000 ?

t years after 2004.

t is found when P(t) = 249000. So

$P(t) = P(0)(1+r)^{t}$

$249000 = 172000(1.047)^{t}$

$(1.047)^{t} = \frac{249000}{172000}$

$\log{(1.047)^{t}} = \log{\frac{249000}{172000}}$

$t\log(1.047) = \log{\frac{249000}{172000}}$

$t = \frac{\log{\frac{249000}{172000}}}{\log(1.047)}$

$t = 8.05$

2004 + 8.05 = 2012

The home would be worth $249000 during the year of 2012.

8 0

3 years ago

A teacher always arranged the content0 of each lessons to Year 10 as teaching and practising learnt skills in the ratio 2:3. α I

Paraphin [41]

I'd say (a) = 52.5 minutes or 52 minutes and 30 second

(b) = 45 minutes

3 0

3 years ago