All categories

2 years ago

Khan question, please help

Mathematics

1 answer:

barxatty [35]2 years ago

3 0

Answer:

Step-by-step explanation:

Khan gives you right answer and tells you what's wrong, but this site is for help so, all you need to do is use the destructive property.

12 x 2= 24 12 x 3 = 36 12 x -1 = -12

now you have the original expression, 24 + 36 - 12 (without the letters.)

You might be interested in

Help me with math work please

shutvik [7]

2. b=-15 4. b=9 5. m=6 b=1 6. m=-4 b=140

6 0

3 years ago

Solve x(−2) 2 =4(−2)

Simora [160]

Hi there,

X x (-2) x 2 = 4 x (-2)
- x = - 2

Hence, X = 2

Hope this helps :)

7 0

3 years ago

Find the volume of this cylinder. Give your answer to 1 decimal point

galina1969 [7]

Answer:

1330.5 cm³

Step-by-step explanation:

The volume of a cylinder is: V = πr²h

Substitute the values for those variables.

V = π(5.5)²(14)

V = π(30.25)(14)

V = 1330.5

4 0

3 years ago

Read 2 more answers

If backpack is discounted 10% ib sale for $37.80 what is the original price

taurus [48]

the answer is $34. 36 if I understood your question correctly.

8 0

3 years ago

Help with trigonometry

Oksanka [162]

Answer:

○B. $\frac{\sqrt{6}}{2}$

Step-by-step explanation:

Trigonometric Identities

$\frac{y}{r} = sin\:θ$

$\frac{x}{r} = cos\:θ$

$\frac{y}{x} = tan\:θ$

$\frac{r}{x} = sec\:θ$

$\frac{r}{y} = csc\:θ$

$\frac{x}{y} = cot\:θ$

Radius Formula

${y}^{2} + {x}^{2} = {r}^{2}$

${[-\sqrt{15}]}^{2} + {[-\sqrt{10}]}^{2} = {r}^{2} → 15 + 10 = {r}^{2} → 25 = {r}^{2}\\ \\ 5 = r$

* Since we are talking about radii, we only want the NON-NEGATIVE root.

In this case, we will not be using the radius in our ratio, according to the trigonometric identity above because we are using the tangent ratio:

$\frac{\sqrt{6}}{2} = \frac{-\sqrt{15}}{-\sqrt{10}} = \sqrt{1\frac{1}{2}}$

I am joyous to assist you anytime.

4 0

3 years ago