All categories

2 years ago

Simplify and Explain Sum: -7 + 9 - 3 * 6 -(5 + 9) ÷ 7

Mathematics

1 answer:

Makovka662 [10]2 years ago

8 0

Answer:

-18

Step-by-step explanation:

Multiply the numbers

3*6

-7 + 9 - 18 - (5 + 9) ÷ 7

Add the numbers

5+9

-7 + 9 - 18 - 14 ÷ 7

Divide the numbers

14÷ 7

-7 + 9 - 18 - 2

Calculate the sum or difference

-18

Answer = -18

You might be interested in

Correct order of (1/2)2,0.75,2/3

katrin2010 [14]

Lowest to highest:

1/2 , 2/3 , 0.75 , 2

7 0

3 years ago

Solve this equation pls

Aleksandr-060686 [28]

Answer:

${ \rm{y = \frac{3 \sqrt{x} + 2x}{ {4x}^{2} } }} \\$

• We are gonna use the quotient rule

${ \boxed{ \bf{ \frac{dy}{dx} = \frac{ {\huge{v} } \frac{du}{dx} - { \huge{u}} \frac{dv}{dx} }{ {v}^{2} } }}} \\$

u is (3√x + 2x)
v is 4x²
du/dx is 3/2√x
dv/dx is 8x

• Therefore:

${ \rm{ \frac{dy}{dx} = \frac{(4 {x}^{2})( \frac{3}{2 \sqrt{x} }) - (3 \sqrt{x} + 2x)(8x) }{16 {x}^{4} } }} \\ \\ { \rm{ \frac{dy}{dx} = \frac{(6 {x}^{2})( {x}^{ - \frac{1}{2} } ) - (24 {x}^{ \frac{3}{2} } + 16 {x}^{2} ) }{16 {x}^{4} } }} \\ \\ { \rm{ \frac{dy}{dx} = \frac{ 6 {x}^{ \frac{3}{2} } - {24x}^{ \frac{3}{2} } - {16x}^{2} }{16 {x}^{4} } }} \\ \\ { \rm{ \frac{dy}{dx} = \frac{ - 18 {x}^{ \frac{3}{2} } - 16 {x}^{2} }{16 {x}^{4} } }} \\ \\ { \rm{ \frac{dy}{dx} = - 2 {x}^{ \frac{3}{2} } (9 + 8 {x}^{ \frac{4}{3} } ) \div 16 {x}^{4} }} \\ \\ { \boxed{ \boxed{ \rm{ \: \: \frac{dy}{dx} = - \frac{8 \sqrt{ {x}^{ \frac{8}{3} }} + 9}{8x {}^{ \frac{8}{3} } } \: \: }}}}$

5 0

2 years ago

Read 2 more answers

Expand (- 3a - 5x) (- 2b - 4y).

vekshin1

Answer: −3a(−2b−4y).−5x(−2b−4y). to this

6ab+12ay+10bx+20xy

Step-by-step explanation: hope this helps :)

8 0

3 years ago

Read 2 more answers

Apply the Pythagorean Theorem to find the distance between points A and B.

irinina [24]

Answer:

Properties of a right tangle can be created in a Coordinate Plane

Distance between two points A and B are shown as below

Step-by-step explanation:

Find distance between two point using Pythagorean Theorem.

Properties of right triangles and creating right triangle as a coordinate Plane.

Suppose two point are drawn in triangle containing value of (-2 , 4 ) and (-2, -2)

then

In (-2 , 4 ) and (-2,-2)

taking y-values that is 4 and -2

find difference between them such as

4-(-2) = 6

Distance is (-2,4) is 6 unit from (-2,-2)

We can also find unit length of A and B

Side A: (-1, 2) and (3,2)

3-(-2) = 5

side A is 5 unit in length

Side B : (-2,2) and (-2,-1)

2 - (-1) = 3

Side B is 3 unit in length

7 0

3 years ago

Read 2 more answers

Write the equation in point slope intercept form of the line that passes through (6,-11) and is parallel to the graph of y=-2/3x

Alina [70]

Answer:

y+11=-2/3(x-6)

Step-by-step explanation:

To find the parallel line, we would just plug in the numbers in the point-slope form from what we're given. We have y=-2/3x+12 and (6,-11).

Point-slope form:

y-y1=m(x-x1) → y+11=-2/3(x-6)

m represents the slope, which is -2/3 in this situation.

y1 represents the y coordinate, which is -11 in this situation. However, when we plug in negative numbers in a point-slope form, we would do the opposite of the negative number, which is to make it a positive in point-slope form.

x1 represents the x coordinate, which is 6 in this situation.

8 0

2 years ago