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3 years ago

Picture Question please help!!!! Thank you so much!

Mathematics

2 answers:

PIT_PIT [208]3 years ago

7 0

33 because 33 times 3 is 99 however it can't be 100 wince there is no multiplication that can be a hundred by timsing the 3

ra1l [238]3 years ago

6 0

The answer is 33. This is because there are 3 colours and the probability that the spinner will land on each colour is 1/3 (one third). To work out the number of times it will land on blue you have to do the probability of it landing on blue (1/3) multiplied by the number of times spun (100) which gives approximately 33.

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Which values satisfy the inequality? |x| < 3 Choose all answers that are correct. A. x = –6 B. x = –5 C. x = –1 D. x = 2

ahrayia [7]

Lets plug in the answer choices and see which one works

A. x = -6

| -6 | < 3
6 < 3

False, so A is not the answer

B. x = -5

| -5 | < 3
5 < 3

False, so B isn't the answer

C. x = -1

| -1 | < 3
1 < 3

True, so C is the answer.

But lets just check D to make sure C is the answer.

D. x = 2

| 2 | < 3
2 < 3

False, so D isn't the answer either.

C is your answer :)

4 0

3 years ago

A circle has centre (3,0) and radius 5. The line y = 2x + k intersects the circle in two points. Find the set

lara [203]

A circle with center $(3,0)$ and radius $5$ has equation

$(x-3)^2+y^2=25 \iff x^2 + y^2- 6 x = 16$

If we substitute $y=2x+k$ in this equation, we have

$x^2+(2x+k)^2-6x=16 \iff 5x^2+(4k-6)x+k^2-16=0$

This equation has two solutions (i.e. the line intersects the circle in two points) if and only if the determinant is greater than zero:

$\Delta=b^2-4ac=(4k-6)^2-4\cdot 5\cdot (k^2-16)>0$

The expression simplifies to

$-4 (k^2 + 12 k - 89)>0 \iff k^2 + 12 k - 89$

The solutions to the associated equation are

$k^2 + 12 k - 89=0 \iff k=-6\pm 5\sqrt{5}$

So, the parabola is negative between the two solutions:

$-6-5\sqrt{5}$

8 0

3 years ago

The 9th graders are selling tickets to raise money for a class field trip. They are selling student tickets for $5 and adult tic

Lubov Fominskaja [6]

For this answer I believe it would be best if you did it on paper

7 0

3 years ago

On a workday the average decibel level of a busy street is 69 db, with 139 cars passing a given point every minute. if the numbe

Vlad1618 [11]

Decibel is directly proportional to number of cars passing the point. That is,

69 db ----- 139 cars
x db ----- 17 cars

x = number of cars passing the point per minute on a weekend.

Then,
x= (69*17)/139 = 8.43 db ≈ 8 db

8 0

3 years ago

Use the distributive property to rewrite each expression (2 + g)8

sineoko [7]

Answer:

I believe it will be 2g times 8

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers