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3 years ago

-20 ≤ -11 - r What could r be??

Mathematics

1 answer:

Phantasy [73]3 years ago

8 0

Answer:

fight grandparents people hace cough

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What’s the difference between the surface area and volume of a shape and why is this the case?

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Answer:

Surface area is the area covering the outside surface of a shape.But volume is all of the area inside a shape.Hope this helps!!

Step-by-step explanation:

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3 years ago

Ponce Leon has a principal of $900 in his savings account on October 1. The money earns an APR of 6.5% calculated quarterly as s

alisha [4.7K]

A=900×((1+(0.065÷4)×(9÷12)))
A=910.96

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3 years ago

ABCD is a trapezium with AB= x cm, DC=( x+ 4 )cm and the distance between the parallel sides AB and DC is 1/2 x cm

horsena [70]

We know that the smaller base is x cm, the greater base is x+4 cm, and that the height is x/2 cm.

Since the area of a trapezium is given by

$A=\dfrac{(b+B)h}{2}$

If we plug the expressions we have

$A=\dfrac{(x+(x+4))\frac{x}{2}}{2}=\dfrac{(2x+4)x}{4}=\dfrac{2x^2+4x}{4}$

If this must equal 84, we can solve for x as follows: start with

$\dfrac{2x^2+4x}{4}=84$

Multiply both sides by 4:

$2x^2+4x=336$

Subtract 336 from both sides:

$2x^2+4x-336=0$

We can divide both sides by 2 to make computation simpler:

$x^2+2x-168=0$

Use the quadratic formula (or any mean you prefer) to solve this equation and get the solutions

$x_1=-14,\quad x_2=12$

We can't accept the negative solution, because it would imply

$AB=-14,\quad CD=-10$

and we can't have negative side lengths. So, the answer is 12.

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3 years ago

The product of two consecutive integers is 19 less than their sum.

ss7ja [257]

Answer:

is there any choices?

Step-by-step explanation:

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3 years ago

Please Help!

Arte-miy333 [17]

There is an infinite number of values that are in both the domain and range.

8 0

4 years ago

Read 2 more answers