All categories

3 years ago

The difference of three times a number n half the number is 60

Mathematics

1 answer:

ira [324]3 years ago

3 0

120 is your answer cause half 120 is 60

You might be interested in

Plz help.

gogolik [260]

1st question: Pr
2nd question: m=3p+12

7 0

3 years ago

A long distance phone call between two cities costs $8.50 for 17 minutes. What is the rate in cents per minute?

Ira Lisetskai [31]

Answer:

.50 cents per minute

Step-by-step explanation:

8.50 divided by 17= 0.50

to check- 0.50 times 17 equals 8.50

3 0

3 years ago

Please help! "Indicate the equation of the given line in standard form. The line containing the midpoints of the legs of right t

julsineya [31]

Nice. We're not really told which is the right angle. We can tell from the squared distances:

$AB^2=(1 - -5)^2 + (1-5)^2=6^2+4^2=52$

$BC^2=(3-1)^2+(4-1)^2=2^2+3^2=13$

$AC^2=(3- -5)^2+(4 -5)^2=8^2+1^2=65$

We see $AC^2=AB^2+BC^2$ so B is the right angle.

That was preliminary and probably indicated in an associated figure.

Now we want the line through the midpoint of the legs, AB and BC, in standard form.

The midpoint of AB is the average of the coordinates of A and B:

$\left( \dfrac{-5 +1}{2}, \dfrac{5+1}{2} \right) = (-2,3)$

The midpoint of BC is

$\left( \dfrac{1 + 3}{2}, \dfrac{1 + 4}{2} \right) = ( 2, \frac 5 2)$

The line through those points is

$(y - 3)(2 - -2)=(x - -2)(\frac 5 2 - 3)$

$4y - 12 = (x+2)(- \frac 1 2)$

$8y - 24 = -x -2$

$x + 8y = 22$

That's the answer. Let's check it.

Midpoint of AB is (-2,3), -2 + 8(3)=22 good.

Midpoint of BC is (2,5/2), 2+8(5/2)=22 good.

$\textrm{Answer: } x + 8y = 22$

4 0

3 years ago

Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.

KIM [24]

Answer:

C. (x + 8) (x + 7)

Step-by-step explanation:

To factor this trinomial, you must split the middle term (15x) into two terms that can be added to get 15x, and multiplied to get 56:

$x^2 + 15x + 56$

$x^2 + 7x + 8x + 56$

Group:

$(x^2 + 7x) (8x + 56)$

Take out the GCF (Greatest Common Factor):

x(x + 7) 8(x + 7)

(x + 8) (x + 7)

6 0

4 years ago

Question 1. What is the probability of choosing a blue block out of a bag containing 4 red , 2 blue , and 4 green blocks ?

sergey [27]

Answer:

Question 1. 2/10

Question 2. 1/4

Question 3. 4/8

Question 4. 3/15

Question 5. 4/10

4 0

4 years ago