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3 years ago

Divide and simplify completely. Assume that no denominator equals zero. d^2-1/d^2-d divided by d - 1/d

1 answer:

5 0

First, you should factor both the numerator and the denominator. Since the numerator is the difference of two squares, that can be factored into (d-1)(d+1); for the denominator, you can factor out d to get d(d-1). From there, you can reduce both the numerator and denominator by (d-1) to get (d+1)/d. If you need to simplify it further, I believe you can simplify it to 1+(1/d).

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If the diameter of a circle is 9 cm, then its circumference is 56.52 cm. True or false?

Brrunno [24]

Circumference
2*pi*r
2*(22/7)*(9/2)
2*(11/7)*9
198 / 7
28.28 cm

so 56.52 is not correct

3 0

2 years ago

boyakko [2]

Answer:

Example: these two triangles are similar: If two of their angles are equal, then the third angle must also be equal, because angles of a triangle always add to make 180°. So AA could also be called AAA (because when two angles are equal, all three angles must be equal)

5 0

2 years ago

Plz help me with this plz

const2013 [10]

Answer:

Slope: $-\frac{3}{4}$

Y intercept: 7

Equation: $y=-\frac{3}{4}x+7$

Step-by-step explanation:

The slope is found by doing the equation $\frac{rise}{run}$ . When looking at the first two points, it's shown that the rise (difference between the two y values) is -3 (since it decreased by 3) and the run (difference between the two x values) is 4 (since it increased by 4).

This gives us a slope of $-\frac{3}{4}$ .

The y intercept is found by looking at the y value when x = 0. In this picture, it is clear that it is 7.

The equation you want to use is y = mx + b , where b is the y intercept and m is the slope. Just plug in the numbers and you got your equation!

7 0

3 years ago

Falling object formula: h=-16t+s

vitfil [10]

Answer:

34.714 seconds

Step-by-step explanation:

According to the question we have:

Formula h = - 16t + s
h = 0
s = 555.427 ft
t = ?

Substitute the given values and solve for t:

0 = - 16t + 555.427
16t = 555.427
t = 555.427/16
t = 34.714

3 0

2 years ago

Jacob opened a money-market account. In the first month, he made an initial deposit of $500, and

natima [27]

Answer:

after 13 months

Step-by-step explanation:

........ur welcome..........

1475-500=975

975÷75=13

so 13 months

6 0

3 years ago