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Margarita [4]
3 years ago
5

Juations

Mathematics
1 answer:
kvasek [131]3 years ago
3 0

Answer:

John = 9

Kim = 6

Vanessa = 3

Step-by-step explanation:

John = n

Kim = n - 3

Vanessa = 0.5n - 1.5

Add them:

2.5n - 4.5 = 18

2.5n = 22.5

n = 9

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Line has equation 3x + y = 15<br><br> Find the gradient of the line.
inessss [21]

Answer:

  -3

Step-by-step explanation:

We can add -3x to put the equation into slope-intercept form.

  y = -3x +15

The gradient of the line (slope) is the coefficient of x: -3.

The gradient is -3.

5 0
2 years ago
A tape diagram. There are 65 students out of 100 students who ride the bus. There are question mark students out of 800 students
SVEN [57.7K]

Answer:

<em>800÷100 = 8</em>

<em>65×8=520</em>

\frac{520}{800}

another way:

<em>100%-65%=35%</em>

<em>35% = 0.35</em>

<em>800×0.35= 280</em>

<em>800-280=</em>520

another way:

<em>65% = 0.65</em>

<em>0.65×800=</em>520

Hope it helped! :)

6 0
2 years ago
Simplify the following expression:<br> Sqrt (-16) + sqrt(-25+5)
Studentka2010 [4]

Answer:

(4 + 2√5) i

Step-by-step explanation:

√(-16) + √(-25 + 5)

√(-16) + √(-20)

4i + 2i√5

(4 + 2√5) i

7 0
3 years ago
Which statement is true about the result of a rigid transformation?
makkiz [27]
The answer is A
A. The pre-image will be congruent to the image.
3 0
4 years ago
Read 2 more answers
I need a step-by-step process of how to solve this I know the answer but I need to know exactly how to solve these kinds of ques
IgorLugansk [536]
So what we know from that is that angle is 30 degrees south of west. so you go 30 degrees down from west. How can we do this? well <span>basically what you have to do is to break down the force into x and y component. The y component of large force and the y component of small force should cancel so that the boat doesn't go north and south and the x components of both the forces should add up so that it goes west only.</span>
6 0
3 years ago
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