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Harlamova29_29 [7]

3 years ago

15

Prove that equation ax^2+2hxy+by^2 always represent a pair of straight lines passing through the origin

1 answer:

GarryVolchara [31]3 years ago

4 0

You should try a calculator 2 6

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The elevation of city A is 96 feet below sea level; the elevation of city C is 24 feet below sea level. The elevation of city D

Alika [10]

C ÷ D- EXPRESSION
-24÷1/4=-18
24
- 6
---------
18

The answer is negative because when you divide 24 by 4 you get 6. and since the number 24 is negative.you need to subtract 6 from 24 to get -18 which is negative.

P.S:I am a 6th graders who doesn't really understand negatives, but i tried my best and got this answer.

7 0

3 years ago

A company manufactures a large number of rods. The lengths of the rods are normally distributed with a mean length of 4.4 inches

Elza [17]

Answer:

0.78814

Step-by-step explanation:

We solve using z score

z = (x-μ)/σ, where

x is the raw score = 4.0 inches

μ is the population mean = 4.4 inches

σ is the population standard deviation = 0.5 inches

z = 4.0 - 4.4/0.5

z = -0.8

Probability value from Z-Table:

P(x<4.0) = 0.21186

P(x>4.0) = 1 - P(x<4.0)

= 1 - 2.1186

= 0.78814

The probability that the rod you chose will be greater than 4.0 inches is 0.78814.

4 0

4 years ago

Write an equation for the line in point-slope and slope-intercept forms.

kobusy [5.1K]

point-slope form: y-y₁ = m(x-x₁)

=============

$\rightarrow \sf y - 5 = \dfrac{5}{3} (x-3)$

slope-intercept form: y = mx + b

============

$\rightarrow \sf y - 5 = \dfrac{5}{3}(x)+ \dfrac{5}{3}(-3)$

$\rightarrow \sf y - 5 = \dfrac{5}{3}(x)-5$

$\rightarrow \sf y = \dfrac{5}{3}(x)-5+5$

$\rightarrow \sf y = \dfrac{5}{3}(x)$

6 0

3 years ago

Read 2 more answers

During a sale, a grocery store gives every 13th customer a free loaf of bread. If 910 customers visit the store, how many loaves

goldfiish [28.3K]

Answer:70

Step-by-step explanation:910/13=70 so he gives away 70 loafs of bread.

5 0

3 years ago

Give the following number in Base 16<br>NO LINKS!!!

olga nikolaevna [1]

Answer:

$\large{\boxed{35_{10} = \sf 23_{16}}}$

Explanation:

$\sf Given : 35_{10}$

Compute:

35 ÷ 16 = 2.1875 = 2R3

2 ÷ 16 = 0.125 = 0R2

Jot down the remainders:

3 ↑

2 ↑

======

$\sf Answer : \ 35_{10} = 23_{16}$

$\hrulefill$

Let's look at another example: $\sf 325_{10} = [?]_{16}$

Compute:

325 ÷ 16 = 20.3125 = 20R5

20 ÷ 16 = 1.25 = 1R4

1 ÷ 16 = 0.0625 = 0R1

Jot down remainders:

5 ↑

4 ↑

1 ↑

=====

$\sf 325_{10} = [145]_{16}$

$\hrulefill$

Another example: $\sf 500_{10} = [?]_{15}$

Compute:

500 ÷ 15 = 33.33... = 33R5

33 ÷ 15 = 2.2 = 2R3

2 ÷ 15 = 0.13... = 0R2

Jot down remainders:

5 ↑

3 ↑

2 ↑

=====

$\sf 500_{10} = [235]_{15}$

7 0

2 years ago