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3 years ago

Help on both questions and please show working out for question 20

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

5 0

19. square has 4
rhombus has 2
and the lat one has 3

20. Okay all you have to do to figure out the height is 64-8=56 and 56-4=52 so the height is 52. Hope this helped

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Generate an equivalent fraction for 3/4.prove answer with visuals

miv72 [106K]

Step-by-step explanation:

3/4 × 3/3 = 9/12

3/4 × 2/2 = 6/8

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3 years ago

What is the area of the shaded region and what steps do I have to do to find it out

natima [27]

Answer:

Usually, we would subtract the area of a smaller inner shape from the area of a larger outer shape in order to find the area of the shaded region.

Step-by-step explanation:

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2 years ago

Simultaneous equations 5x+y=28 x+y=2

ludmilkaskok [199]

Answer:

Step-by-step explanation:

$5x + y = 28$

$x + y = 8$

Solve the equation for y by moving 'x' to R.H.S and changing its sign

$5x + y = 28$

$y = 2 - x$

Substitute the given value of y into the equation 5x + y = 28

$5x + 2 - x = 28$

Solve the equation for x

Collect like terms

$4x + 2 = 28$

Move constant to R.H.S and change its sign

$4x = 28 - 2$

Subtract the numbers

$4x = 26$

Divide both sides of the equation by 4

$\frac{4x}{4} = \frac{26}{4}$

Calculate

$x = \frac{26}{4}$

Reduce the numbers with 2

$x = \frac{13}{2}$

Now, substitute the given value of x into the equation y = 2 - x

$y = 2 - \frac{13}{2}$

Solve the equation for y

$y = - \frac{9}{2}$

The possible solution of the system is the ordered pair ( x , y )

-------------------------------------------------------------

Let's check if the given ordered pair is the solution of the system of equation:

plug the value of x and y in both equation

$5 \times \frac{13}{2} - \frac{9}{2} = 28$

$\frac{13}{2} - \frac{9}{2} = 2$

Simplify the equalities

$28 = 28$

$2 = 2$

Since , all of the equalities are true, the ordered pair is the solution of the system.

$(x \:, y \: ) = ( \frac{13}{2} \: , - \frac{9}{2})$

Hope this helps....

Best regards!!

5 0

3 years ago

Read 2 more answers

1+1 what does that equal

lutik1710 [3]

1+1=2
For example, if you have one obeject and get one more object along with the first object, you will have 2 objects all together.

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3 years ago

Read 2 more answers

The formula for the volume of a sphere is S = 4 3 πr3, where r (in feet) is the radius of the sphere. Suppose a spherical snowba

Soloha48 [4]

Answer with Step-by-step explanation:

We are given that

Volume of sphere= $\frac{4}{3}\pi r^3$

Where r= Radius of sphere in ft

a. $r=\frac{1}{(t+1)^2}-\frac{1}{15}$

$\frac{dr}{dt}=\frac{-2}{(1+t)^3}$

$\frac{dS}{dt}=\frac{dS}{dr}\cdot \frac{dr}{dt}=4\pi r^2\frac{dr}{dt}$

$\frac{dS}{dt}=4\pi(\frac{1}{(1+t)^2}-\frac{1}{15})^2\times \frac{-2}{(1+t)^3}$

$\frac{dS}{dt}=\frac{-8\pi}{(1+t)^3}(\frac{1}{(1+t)^2}-\frac{1}{15})^2$

b.Substitute t=1

Then, we get

$\frac{dS}{dt}=\frac{-8\pi}{8}(\frac{1}{4}-\frac{1}{15})^2$

$\frac{dS}{dt}=-0.1056 ft^3/min$

6 0

3 years ago