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4 years ago

Determine whether each pair of segments is congruent

Mathematics

1 answer:

Dafna1 [17]4 years ago

6 0

They are both labeled as 3 feet, so both must be equal, unless you doubt the labeling. Unless that is so, then both segments are equal.

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Y = x-2<br> What is the y-intercept of this line?

serg [7]

Answer:

I love algebra anyways

the ans is in the picture with the steps

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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3 years ago

What value n ×3/4=3/16

Firdavs [7]

the value is n=1/4
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3 years ago

What is the simplified value of the expression below?-8 *(-3)

Readme [11.4K]

Answer: +24

Step-by-step explanation: To multiply (-8)(-3), remember that a negative times a negative is always a positive. So (-8)(-3) is +24.

7 0

3 years ago

Read 2 more answers

If 3^x+ 2^y= 985 and 3^x– 2^y = 473, find the value of x + y.

dolphi86 [110]

Answer:

x = 6 and y = 8

Step-by-step explanation:

3^x+ 2^y= 985 and 3^x– 2^y = 473 can be written in column form:

3^x+ 2^y= 985

3^x– 2^y = 473

By summing these two equations we temporarily eliminate y:

2*3^x = 985 + 473 = 1458

Then 2*3^x = 1458. We must find x.

Dividing both sides by 2 yields

3^x = 729

Note that 729 = 3^6. Therefore, x must be 6.

If x = 6, then the first equation becomes

3^6 + 2^y = 985, or

729 + 2^y = 985, or 2^y = 985 - 729 = 256

Note that 2^y = 256 = 2^8. Then y must be 8.

8 0

3 years ago

assume the age of night school students is normally distributed. A simple random sample of 24 night school students had an avera

aleksley [76]

Let
n = number of data
s = standard deviation (sample)
S = standard deviation (population)

The working equations is

$\frac{(n-1) s^{2} }{ x^{2}_{right} } \ \textless \ S^{2} \ \textless \ \frac{(n-1) s^{2} }{ x^{2}_{left} }$

To find $x^{2}_{right}$ , : (1 - 0.90)/2 = 0.05

To find $x^{2}_{left}$ , : 1 - 0.05 = 0.95

Degrees of freedom = n-1 = 24 - 1 = 23

This is shown in the figure attached. Since there is no row for df=23, we interpolate. Thus,

$x^{2}_{left} = 13.093$

$x^{2}_{right} = 35.17$

Substitute all values,

$\frac{(24-1) 5.6^{2} }{ 35.17} \ \textless \ S^{2} \ \textless \ \frac{(24-1) 5.6^{2} }{ 13.093} }$

Thus the answer is,

$20.51\ \textless \ S^{2} \ \textless \ 55.09$

5 0

3 years ago