Write an expression that can be used to multiply 6 x 198 mentally? please answer thanks!

Answers

Answer 1

Answer: -6 x 2 + 6 x 200. Since you want to find out 6 multiplied by 198 the easiest way (for me) would be to round it and then substract 12 since 200-198 is equal to 2 and 6 x 2 is equal to 12

Answer 2

Answer: Assuming you meant 6 x 198... Do a mental sum for 6 x 200 (1200) then subtract 6

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V equals lwh solve for l
$v = lwh \: solve \: for \: l$

Answers

v = l*w*h

divide by wh on each side

v/wh =lwh/wh

v/(wh) = l

A parallelogram has one angle that measures 76°. What are the measures of the other three angles in the parallelogram?

Answers

A parallelogram has one angle thatmeasures 76°. The measures of the other three angles in the parallelogram are 76°, 104°, and 104°.

What is a parallelogram?

That quadrilateral in which opposite sides are parallel is called a parallelogram.

Thus, a parallelogram is always a quadrilateral but a quadrilateral can or cannot be a parallelogram.

A parallelogram has one angle that measures 76°.

We already know that in a parallelogram opposite angles are equal.

1st angle = 76°

Third angle = 76°

And let the other 2nd and 4th angles be x and x

So, The sum of all the angles of quadrilateral

76° + 76° + x + x = 360°

152° + 2x = 360°

2x = 360° - 152°

2x = 208°

Therefore x = 104°

Hence, We have got all angles that are 76°, 76°, 104°, and 104°.

Learn more about angles here:

brainly.com/question/2882938

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Step-by-step explanation:

We know that in a parallelogram opposite angles are equal so

1st angle = 76°

Third angle = 76°

And let the other 2nd and 4th angles be x and x

Now

76° + 76° + x + x = 360° <being sum of angles of quadrilateral >

152° + 2x = 360°

2x = 360° - 152°

2x = 208°

Therefore x = 104°

We have got all angles

76° , 76° , 104° and 104°

Solve with the quadratic formula
4×^2×+1=0

Answers

Answer:

Either x = + i/2 or x = i/2 is the solution for the given quadratic equation.

Step-by-step explanation:

Here, the given quadratic equation is: $4x^2 + 1 = 0$

Now, comparing the given equation with standard Quadratic Form, $ax^2 + bx + c = 0$

we get,a = 4, b =0 and c = 1

Now, the Quadratic Formula is given as:

$x = (-b \pm √(b^2 - 4ac) )/(2a)$

So, here the solution for the given expression is:

$x = (0 \pm √((0)^2 - 4(4)(1)) )/(2(4)) = x = (0 \pm √(-16) )/(8)\n\implies x = (0 \pm4i)/(8)\n\implies x = (0 + 4i)/(8) = (i)/(2) \nor, x = (0 - 4i)/(8) = (-i)/(2)$

Hence, either x = + i/2 or x = i/2 is the solution for the givenquadratic equation.

Give an example of a 90 degree angle

Answers

The corner of a square will be a great example.

The letter L is an example of a 90 degree angle

Solve for x. Express the answer in simplest form,

Answers

$(6x-1)/(5)=(3)/(1) \ \ \ |\hbox{cross multiply} \n6x-1=3 * 5 \n6x-1=15 \n6x=15+1 \n6x=16 \nx=(16)/(6) \nx=(8)/(3) \nx=2(2)/(3)$

In order to solve for x, you need to isolate the x on one side. First, you need to multiply the 5 onto the other side to get rid of the fraction. Then, just add 1 and divide by 6 to isolate the x (steps will be shown below):

$(6x-1)/(5)=(3)/(1)\n5((6x-1)/(5))=5(3)\n6x-1=15\n6x-1+1=15+1\n6x=16\n6x/6=16/6\nx=(16)/(6)=(8)/(3)$

So, x = 8/3

would you choose to use a hundred chart to solve 90- 80? why or why. not ? if not. which strategy would work better?

Answers

Yes beacause they aré both close to the number 100

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