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3 years ago

If Ann correctly factors an expression that is the difference of two perfect squares, her factors could be

Mathematics

1 answer:

jasenka [17]3 years ago

8 0

Answer:

1.) ???

2.) (2x+3y)(2x-3y)=4x²-9y²

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HELP ME WITH THESE THANKS :)!

kvv77 [185]

Answer:

50; 72; 8; 57.9

Step-by-step explanation:

1. sqrt((30/2)^2 + (20)^2) = sqrt(15^2 + 20^2) = sqrt(225 + 400) = sqrt(625) = 25 (radius) * 2 = 50 (diameter)

2. 360 (degrees in a circle)/5 (sides in a pentagon) = 72 degrees

3. 360 (degrees in a circle)/x (sides) = 45 --> 360/45 = x --> 8 sides = x

4. sqrt(7^2 + (12/2)^2) = radius --> sqrt(49 + 36) --> sqrt85 * 2pi = circumference --> 57.9281062 = circumference --> 57.9

7 0

3 years ago

I need help quickly and fast

Andrej [43]

i might be wrong about this one

5 0

2 years ago

Read 2 more answers

YOUR TURN

Karolina [17]

Answer:

The equation is: y = 15·x

Step-by-step explanation:

It is provided that at the Speedy Bike Works, 15 bicycles are produced each hour.

Consider the table below.

Number of Hours: 1 3 6 10

Number of Bicycles Produced: 15 45 90 150

Compute the ratio of number of bicycles produced and number of hours for every data above as follows:

$\text{1 hour}=\frac{15}{1}=15:1\\\\\text{3 hour}=\frac{45}{3}=\frac{15}{1}=15:1\\\\\text{6 hour}=\frac{90}{6}=\frac{15}{1}=15:1\\\\\text{10 hour}=\frac{150}{10}=\frac{15}{1}=15:1$

The ratio of the number of bicycles produced and number of hours is same for every data value.

Thus, the relationship between the number of bicycles produced and number of hours is proportional.

The equation for the relationship is:

y = 15·x

y = number of bicycles produced

x = number of hours

4 0

3 years ago

The cost of buying salad from a salad bar is at least $4.50 per pound. Which inequality represents the price per pound of salad?

Oduvanchick [21]

The cost of buying salad per pound) is more than or equal to $4.50
Step-by-step explanation:
We know from the problem that the salad is going to cost at least $4.50 per pound. Therefore, it is entirely possible for the cost to exceed $4.50, but it cannot be lower than $4.50 because then it would not be equal to $4.50.
So, there would be a greater-than sign pointing toward the s (which I seemingly cannot depict on here for some reason...)

6 0

2 years ago

generally people cover 110 yards in 11 seconds. express the speed in feet per second. (3 feet = 1 yard)

ivolga24 [154]

1 yd = 3 feet....so 110 yds = 3(110) = 330 ft

330 feet / 11 seconds = (330/11) = 30 feet per second

3 0

3 years ago