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Bas_tet [7]
3 years ago
8

-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?
lana66690 [7]

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:

7 0
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)))
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5 0
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.

4 0
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:

4 0
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
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