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Anon25 [30]
2 years ago
11

Please help me solve and you'll get a brainlist

Mathematics
1 answer:
jasenka [17]2 years ago
4 0
Y=4x+1
Let y=0
0=4x+1
4x=-1
x=-1/4

Let x=0
Y=4*0+1
Y=0+1
Y=1

Therefore, the ordered pair is (-1/4, 1)
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Please I need help thank you in advance ​
arlik [135]

Answer: The amswer is D because -1 + 1 = 0

7 0
2 years ago
Read 2 more answers
How would you write 87 as a Roman numeral?
ddd [48]

Answer:

LXXXVII

Step-by-step explanation:

L=50 X=10 V=5 I=1

So basically you need to figure out what adds up to the 87. so use L, or 50. now XXX=30. so now you have 80 so we still have 7 left over, so we can write 7 I's or a 5, (V) and two I's. We should use the V and the I. So we take one V, or 5. and two I's which together is 7. which leads us too LXXXVII. also always remember to have the biggest number first, in this case the L (50).

7 0
3 years ago
I need help on this​
love history [14]

Answer:

-11/4

Step-by-step explanation:

 (-8 - 3)/[3-(-1)]= -11/4

5 0
3 years ago
A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student
Butoxors [25]

Answer: (21.541,\ 23.059)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=240 , which is a large sample , so we apply z-test .

Sample mean : \overline{x}=22.3

Standard deviation : \sigma= 6

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.960

Now, a confidence interval at the 95% level of confidence will be :-

22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)

7 0
3 years ago
X+413=−256 <br> What is the value of X?
Phantasy [73]

Answer:

-669

Step-by-step explanation:

Convert -256 to 256

Addition -> 413+256=

669

Convert 669 to -669

X=-669

Double Check:

-669+413=-256

8 0
2 years ago
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