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3 years ago

I need helpppp please help me

Mathematics

2 answers:

eduard3 years ago

8 0

Answer:

The answer is 70.

Step-by-step explanation:

You replace x with -5.

So you get:

K(-5) = 6(-5)+100

6(-5)= -30

-30+100=70

Therefore K(-5)=70

Yuki888 [10]3 years ago

8 0

Answer:

Step-by-step explanation:

k(-5) = 6*(-5) +100

= -30 + 100

= 70

If two numbers have different sign, then subtract and put the sign of the bigger number for the result.

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How to work problem out<br> -8s + 1 = 33

dezoksy [38]

First you subtract 1 from 33 then you will get 32. After divide by 8. S= 4

6 0

2 years ago

A television and DVD player cost a total of $1230. The cost of the television is two times the cost of the DVD player. Find the

nikitadnepr [17]

Answer:

Television = 820

DVD Player = 410

Step-by-step explanation: Imagine the television as 2, and the DVD player as 1. If you’re were to draw it out with boxes, you’d see that the tv has two boxes and the DVD player has 1 box. All are exactly the same amount, and there are a total of three boxes. So divided 1230 by 3 and you get 410. Using the idea of the boxes, the DVD player get’s one 410, and the tv gets two 410s, or 820.

6 0

2 years ago

4+(−1 2/3) i don't get how to this cuz there aren't two fractions, just one.

kenny6666 [7]

Answer:

2 1/3

Step-by-step explanation:

4 + ( -1 2/3)

= 4 - 1 2/3

= 4 - 5/3

= 12/2 - 5/3

= 7/3

= 2 1/3

5 0

2 years ago

The dot plot below shows how many apple slices each girl at kaylas party ate which of the following represents the mean of the a

katovenus [111]

The answer to this question is 5.

8 0

3 years ago

Two boats leave the same place at the same time. The first boat heads due north at 10 kilometers per hour. The second boat heads

Maksim231197 [3]

Answer:

18.87 km/hr

Step-by-step explanation:

First boat is heading North with a speed of 10 km/hr.

Second boat is heading West with a speed of 16 km/hr.

Time for which they move = 2.5 hours

To find:

The speed at which the distance is increasing between the two boats.

Solution:

Let the situation be represented by the attached diagram.

Their initial position is represented by point O from where they move towards point A and point B respectively.

$Distance = Speed \times Time$

$Distance\ OA = 10 \times 2.5 = 25\ km$

$Distance\ OB = 16 \times 2.5 = 40\ km$

We can use Pythagorean Theorem to find the distance AB.

AB is the hypotenuse of the right angled $\triangle AOB$ .

According to Pythagorean theorem:

$\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^2 = 25^2 + 40^2\\\Rightarrow AB^2 = 2225^2\\\Rightarrow AB^2 \approx 47.17\ km$

The speed at which distance is increasing between the two boats is given as:

$\dfrac{47.17}{2.5} \approx 18.87\ km/hr$

4 0

2 years ago