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weeeeeb [17]
3 years ago
15

Fully simplify. (-2V-49)(5V-100)

Mathematics
1 answer:
brilliants [131]3 years ago
5 0

(-2v-49)x(5v-100)

Multiply each term in the first parentheses by each term in the second parentheses (foil)

-2vx5v-2vx(-100)-49x5v-49 x (-100)

calculate the product

-10v²-2v x(-100)-49x5v-49 x(-100)

-2vx5v

Multiply the numbers

-10v x v

the same of the other one ok is different how i am doing

-2vx5v

If a term doesn't have an exponent , it is considered that the exponent is 1

-10v^ 1 x v

-10v^1 xv^1

Multiply the terms with the same base by adding their exponents

-10v^1 x v^1

-10v^1+1

to add the numbers using a number line, start from zero

1+1=2

Since 1 is positive, move the point 1 unit to the right

The result is 2

Answer: -10v^2

That's it . Hope it wasn't too hard to understand?

PLEASE MARK ME AS BRAINLIEST

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One end of a ladder 32 feet long is placed 10 feet from the outer wall of a building that stands on the ground level. How far up
ladessa [460]

Answer:

30 ft

Step-by-step explanation:

This is a classic right triangle problem, where the length of the ladder represents the hypotenuse, where the ladder is lengthwise from the building is the base of the triangle, and what we are looking for is the height of the triangle.  Pythagorean's Theorem will help us find this length.

32^2-10^2=y^2 so

1024 - 100 = y^2 and

y = 30.4 so 30 feet

4 0
3 years ago
What is the equation of a line in general form that does not have a y-intercept and goes through the point (3,6) ?
Dennis_Churaev [7]

Answer:

x = 3

Step-by-step explanation:

<u>Step 1:  Determine the equation</u>

So we know that our equation does not have a y-intercept which means that it doesn't intersect ANYWHERE on the y-axis.  Therefore, this means that our equation will be a straight vertical line that doesn't move side to side and just goes straight up and down.  We also know that our point is (3, 6) which means that our x-value will be 3 and this is where the equation will be located.  

There are several ways to display our answer where x = 3 is the most common way which basically means give me all of the y-values for the same x value of 3.  Another way of saying it is x - 3 = 0 which either way when adding 3 to both sides gives you x = 3 which is what I usually go with.

Answer: x = 3

4 0
2 years ago
Read 2 more answers
In order to burn calories and lose weight, Vera is trying to incorporate more exercise into her busy schedule. She has several s
mel-nik [20]

Answer:each session of body sculpting workouts burns 51 calories.

Each session of Yoga workouts burns 83 calories.

Step-by-step explanation:

Let x represent the number of calories that she burnt doing one body sculpting workout session.

Let x represent the number of calories that she burnt doing one Yoga session.

Last week, she burned a total of 517 calories by doing 2 body sculpting workouts and 5 yoga sessions. This means that

2x + 5y = 517 - - - - - - - - - -1

This week, she has completed 2 body sculpting workouts and 1 yoga session and burned a total of 185 calories. This means that

2x + y = 185 - - - - - - - - - - - - 2

Subtracting equation 2 from equation 1, it becomes

4y = 332

y = 332/4 = 83 calories

Substituting y = 83 into equation 2, it becomes

2x + 83 = 185

2x = 185 - 83 = 102

x = 102/2 = 51 calories

8 0
4 years ago
Sarah is doing research on the average age of first-year resident physicians. She wants her estimate to be accurate to within 1
WINSTONCH [101]

Answer: The number of first-year residents she must survey to be 95% confident= 263

Step-by-step explanation:

When population standard deviation (\sigma)  is known and margin of error(E) is given, then the minimum sample size (n) is given by :-

n=(\dfrac{z^*\sigma}{E})^2, z* = Two-tailed critical value for the given confidence interval.

For 95% confidence level , z* = 1.96

As, \sigma = 8.265, E = 1

So, n= (\dfrac{1.96\times8.265}{1})^2 =(16.1994)^2\\\\= 262.42056036\approx263\ \ \ [\text{Rounded to the next integer}]

Hence, the number of first-year residents she must survey to be 95% confident= 263

7 0
3 years ago
In a chess club, 75% of the members are boys. Of these boys, 8% have hazel eyes. If 6 boys have hazel eyes, how many people are
boyakko [2]

Answer:

100

Step-by-step explanation:

let 'n' = # chess club members

6 = 3/4 · 8/100 · n

6 = 3/50n

3n = 300

n = 100

7 0
3 years ago
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