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3 years ago

6

Jessica rode 9 miles farther than Roger rode. Let rrepresent the number ofmiles Roger rode. Write an expression for the number o

f miles Jessica rode

1 answer:

fenix001 [56]3 years ago

4 0

R+9 Because Jessica rode 9 miles more than Roger, you would add 9 to Roger's number making the expression r+9

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This is factoring trinomials,help plz!

MaRussiya [10]

10.
Factor the following:
8 x^2 - 2 x - 10
Factor 2 out of 8 x^2 - 2 x - 10:
2 (4 x^2 - x - 5)

Factor the quadratic 4 x^2 - x - 5. The coefficient of x^2 is 4 and the constant term is -5. The product of 4 and -5 is -20. The factors of -20 which sum to -1 are 4 and -5. So 4 x^2 - x - 5 = 4 x^2 - 5 x + 4 x - 5 = 4 x (x + 1) - 5 (x + 1):
2 4 x (x + 1) - 5 (x + 1)
Factor x + 1 from 4 x (x + 1) - 5 (x + 1):
Answer: 2 (x + 1) (4 x - 5)
_____________________________________________

13.
Factor the following:
16 x^2 - 24 x + 8

Factor 8 out of 16 x^2 - 24 x + 8:
8 (2 x^2 - 3 x + 1)

Factor the quadratic 2 x^2 - 3 x + 1. The coefficient of x^2 is 2 and the constant term is 1. The product of 2 and 1 is 2. The factors of 2 which sum to -3 are -1 and -2. So 2 x^2 - 3 x + 1 = 2 x^2 - 2 x - x + 1 = -(2 x - 1) + x (2 x - 1):
8 x (2 x - 1) - (2 x - 1)

Factor 2 x - 1 from x (2 x - 1) - (2 x - 1):
Answer: 8 (2 x - 1) (x - 1)

8 0

3 years ago

I do not know the answer for this, what is the answer?

Digiron [165]

I'm pretty sure it would be reflection then rotation

8 0

2 years ago

Unit: Geometry HElp I dont understand

vichka [17]

Answer:

11 and 23

Step-by-step explanation:

So, what is scaling?

Scaling is basically when a shape is inlarged or shruken by a specific amount on all sides.

In this case, one of the shapes side's is 10.

Now, they say that the scale value is more than 1. What does this mean?

It means that the new, scaled number is going to be at least as big as 10.

We dont have to worry about finding a exact number, since they do not give us any information to scale with.

So, all we have to do is look at the graph, and see what numbers are larger than 10.

Is 2 units larger than 10? No, thats only about 1/5 the orginal size, not larger than 1.

Is 5 units larger than 10? No, thats only abouit 1/2 the orginal size, not larger than 1.

How about 11? Is it larger than 10? Yes, its about 11/10 the orginal size, which is bigger than 1.

Finally we have 23? Is it larger than 10? Yes, its a little over 2 times bigger than the orginal size.

So your two answers are:

11 and 23

Hope this helps! :)

5 0

3 years ago

Read 2 more answers

The number of bees spotted in Amelie's garden can also be modeled by the function √ B(x) = 50 k + 2x where x is the daily high t

uranmaximum [27]

Answer:

According to this model, the rate of increase of bees spotted with respect to time when 100 bees are spotted = 80 bees per day.

Step-by-step explanation:

√B(x) = 50 k + 2x

where x is the daily high temperature, in degrees Farenheit.

k is a positive constant.

When the number of bees spotted = 100,

The daily high temperature is increasing at a rate of 2°F per day; (dx/dt) = 2 °F/day

How quickly is the number of bees changing with respect to time when 100 bees are spotted?

√B(x) = 50k + 2x

Taking a time derivative of both sides,

(d/dt) [√B] = (d/dt) [50 k + 2x]

(1/2) (B⁻⁰•⁵) (dB/dt) = (d/dt)(50k) + (d/dt)(2x)

½(B⁻⁰•⁵) (dB/dt) = 50 (dk/dt) + 2 (dx/dt)

B = 100 bees

(dB/dt) = ?

(dk/dt) = 0 (since k is a positive constant)

(dx/dt) = 2°F/day

½(100⁻⁰•⁵) (dB/dt) = 50 (0) + 2 (2)

½(10⁻¹) (dB/dt) = 4

(1/2)(1/10) (dB/dt) = 4

(dB/dt) = 4×2×10 = 80

(dB/dt) = 80 bees per day

Hope this Helps!!!

7 0

3 years ago

Tim wraps presents at a lokal gift shop.If it takes 2.5 meters of wrapping paper per present,how many can tim wrap if he has 50

Mekhanik [1.2K]

Answer:

20 presents

Step-by-step explanation:

50 ÷ 2.5 = 20

7 0

3 years ago

Read 2 more answers