All categories

3 years ago

TELL ME THE POINTS TO GRAPH TO BE MARKED BRAINLIEST

1 answer:

6 0

Solve by elimination
multiply top by -1

-2x + y = -4
x - y = -2

-x = -6..............so x = 6

2(6) - y = 4
12-y = 4
-8 = -y
so y = 8

(-6,8)

You might be interested in

Calculate the length of BE

lora16 [44]

Answer:

BE = 72 cm

Step-by-step explanation:

$\frac{AB}{BC} = \frac{BE}{CD}$ (BPT Theorem)

$\frac{20}{5} = \frac{BE}{18} \\$

⇒ 4 = $\frac{BE}{18}$

⇒BE = 18 × 4

∴ BE = 72 cm

Hope this helps...

Please mark as Brainliest!!

6 0

3 years ago

What figure is a dilation of Figure A by a factor of 1/2 ?

Liula [17]

hi im new how do i privatly chat on here?

6 0

3 years ago

Convert F2 from hexadecimal to binary.

Yakvenalex [24]

Question:

"Convert F2 from hexadecimal to binary."

Answer:

11110010

Step-by-step explanation:

Hex F2 to decimal explained:

The value of HEX F2 in decimal is 242.

The value of HEX F2 in binary is 11110010.

2 2 X 160 = 2

F 15 X 161 = 240

HEX F2 = 242

The binary value is: 11110010

A hexadecimal number has base 16 (0,1,2,3,4,5,6,7,8,9 A,B,C,D,E,F).

basic hex to a decimal conversion table

Hex 0 1 2 3 4 5 6 7 8 9 A B C D E F

Decimal 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST IF THIS HELPED YOU LEARN! :)

3 0

3 years ago

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estim

pogonyaev

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36$

And rounded up we have that n=656

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by $\alpha=1-0.80=0.20$ and $\alpha/2 =0.10$ . And the critical value would be given by:

$z_{\alpha/2}=\pm 1.28$

Solution to the problem

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

Since we don't have prior info for the proportion of interest we can use $\hat p=0.5$ as estimator. And on this case we have that $ME =\pm 0.025$ and we are interested in order to find the value of n, if we solve n from equation (a) we got: