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3 years ago

Lesson 4: Practice Problems

Mathematics

1 answer:

gtnhenbr [62]3 years ago

3 0

Answer:

a).1

b).1

c).111

Step-by-step explanation:

a) anything to the zero power is 1

b) any number divided by itself is one

c) 100+10+1=111

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How many factors does (2x+5) have

zalisa [80]

Answer:
three (3) factors

Explanation:
2, x and 5 are all factors.

hope this helps! <3

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3 years ago

Can someone answer this for me (number 7 with quadratic equations algebraically)

s2008m [1.1K]

X1= 7
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3 years ago

Some steps in solving an equation are more efficient than others. Complete parts (a) though (d) to determine the most efficient

Vinil7 [7]

Answer:

The solution of the given equation x =11

Step-by-step explanation:

Given equation 34 - 5x = -21

Step :-(a)

Given equation 34 - 5x = -21

Subtracting '34' on both sides , we get

34 - 5x -34 = -21 -34

Step:-(b)

on simplification , we get

-5x = -55

Step:-(c)

Dividing ' -5' on both sides , we get

$\frac{-5x}{-5} =\frac{-55}{-5}$

Cancellation '-5' on both sides , we get

x = 11

Step :-(d)

The solution of the given equation x =11

5 0

3 years ago

Find an equation of the circle that satisfies the given conditions. (Give your answer in terms of x and y.)

masya89 [10]

Answer:

$(x-4)^2+(y+5)^2=90$

Step-by-step explanation:

The equation of a circle of radius r, centered at the point (a,b) is

$(x-a)^2+(y-b)^2=r^2$

We already know the center is at $(4,-5)$ , we are just missing the radius. To find the radius, we can use the fact that the circle passes through the point (7,4), and so the radius is just the distance from the center to this point (see attached image). So we find the distance by using distance formula between the points (7,4) and (4,-5):