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Novay_Z [31]
3 years ago
10

Select all the equations below that have a slope of -5.

Mathematics
1 answer:
Zanzabum3 years ago
7 0

Answer:

B and C

Step-by-step explanation:

they have -5x,   it doesn't really matter on their order

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How does the scientific process generally begin
Varvara68 [4.7K]
Lab Safety is the main starting point on the scientific process.
7 0
3 years ago
Complete the square x^2-10=16<br><br>​
Hatshy [7]

Answer:

(x - 5)² = 41

Step-by-step explanation:

* Lets revise the completing square form

- the form x² ± bx + c is a completing square if it can be put in the form

 (x ± h)² , where b = 2h and c = h²

# The completing square is x² ± bx + c = (x ± h)²

# Remember c must be positive because it is = h²

* Lets use this form to solve the problem

∵ x² - 10x = 16

- Lets equate 2h by -10

∵ 2h = -10 ⇒ divide both sides by 2

∴ h = -5

∴ h² = (-5)² = 25

∵ c = h²

∴ c = 25

- The completing square is x² - 10x + 25

∵ The equation is x² - 10x = 16

- We will add 25 and subtract 25 to the equation to make the

 completing square without change the terms of the equation

∴ x² - 10x + 25 - 25 = 16

∴ (x² - 10x + 25) - 25 = 16 ⇒ add 25 to both sides

∴ (x² - 10x + 25) = 41

* Use the rule of the completing square above

- Let (x² - 10x + 25) = (x - 5)²

∴ (x - 5)² = 41

3 0
3 years ago
Find the measure of the angles indicated
GalinKa [24]

Both angles have a measure of 125°.

<h3>How to find the measure of the angles?</h3>

Assuming the two horizontal lines are parallel, we know that the measure of the two indicated angles must be the same one.

Then:

-1 + 14x = 12x + 17

Now we need to solve this for x:

14x - 12x = 17 + 1

2x = 18

x =18/2 = 9

Now that we know the value of x we can replace it in any of the expressions for the angles:

-1 + 14*9 = 125°

Both angles have a measure of 125°.

If you want to learn more about angles:

brainly.com/question/25716982

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8 0
1 year ago
A sculptor needs to lift a piece of marble.
Dennis_Churaev [7]

Answer:

486kg

Step-by-step explanation:

density = mass / volume

2.7 = m / (100 x 60 x 30)   **** Note the conversion to cm as the density is given in g/cm.

2.7 = m / 180000

m = 486000g

Now convert to mass in kg:

486000 g x 1 kg / 1000 g = 486kg

4 0
3 years ago
Read 2 more answers
You are to drive to an interview in another town, at a distance of 270 km on an expressway. The interview is at 11:15 a.m. You p
Yuri [45]

Answer:

the least required speed  is 103.88 km/h

Step-by-step explanation:

Data provided in the question:

Total distance = 270 km

Total time to reach = Time between 8 a.m and 11:15 a.m i.e 3.25 hours

Now,

For the distance of 110 km speed was 100 km/h

therefore, the time taken to cover 110 km = \frac{\textup{Distance}}{\textup{speed}}

= \frac{\textup{110 km}}{\textup{100 km/h}}

= 1.1 hour

For another 43 km speed was 42 km/h

therefore, the time taken to cover 43 km =  \frac{\textup{Distance}}{\textup{speed}}

= \frac{\textup{43 km}}{\textup{42 km/h}}

= 1.0238 hours

Now,

The distance left to be covered = 270 - 110 - 43 = 117 km

Time left = 3.25 h - 1.1 h - 1.0238 h = 1.1262 h

Thus required speed = \frac{\textup{117 km}}{\textup{1.1262 h}}

= 103.88 km/h

Hence, the least required speed  is 103.88 km/h

6 0
2 years ago
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