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3 years ago

On a coordinate plane, what is the difference between (-2,7) and (-2,-6)?

1 answer:

4 0

If you mean distance, then we can use the distance formula to find out.

(x - x)² + (y - y)² = d² Distance formula
(-2 + 2)² + (7 + 6)² = d² Substitute the points; remember that when you subtract a negative, you add, and also remember to always subtract in the same direction (with the points (1,2) and (3,4), if you do 1 - 3, then do 2 - 4 and not 4 - 2)
(0)² + (13)² = d² Add
0 + 169 = d² Square
169 = d² Add
13 = d Take the square root of both sides to cancel out the exponent

The distance between (-2,7) and (-2,-6) is 13 units.

Hope this helps!

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Write the following rate as a simplified fraction 55 dogs to 75 cats

denis23 [38]

Answer:

11/15

Step-by-step explanation:

Divide both the numerator and denominator by the GCD

55 ÷ 5

75 ÷ 5

=11/15

4 0

4 years ago

Read 2 more answers

Express the mixed number 6 3/8 as a improper fraction? please show work.

Mkey [24]

6 3/8

Multiply the whole number with the denominator

6*8= 48. Add 3 ( numerator) with 48.

48+3= 51

51/8

Answer: 51/8

6 0

4 years ago

EAB and DCB are two right triangles. The figure has BED≅ BDE. Point B is the midpoint of segment AC. Prove: EAB≅ DCB

aleksklad [387]

See the attached picture.

you are given that ABCE is an isosceles trapezoid. 

you are given that AB is parallel to EC. 

this means that AE is congruent to BC. 

you are given that AE and AD are congruent. 

triangle EAD is an isosceles triangle because AE and AD are congruent. 

this means that angle 1 is equal to angle 3. 

since angle 1 is equal to angle 2 and angle 3 is equal to angle 1, then angle 3 is also equal to angle 2. 

this means that AD and BC are parellel because their corresponding angles (angles 3 and 2) are equal. 

since AB is parallel to EC and DC is part of the same line, than AB is parallel to DC. 

you have AB parallel to DC and AD parallel to BC. 

if opposite sides of a quadrilateral are parallel, then the quadrilateral is a parallelogram. 

that might be able to do it,depending on whether all these statements are acceptable without proof. 

they are either postulates or theorems that have been previously proven. 

if not, then you need to go a little deeper and prove some of the statements that you used.. 

here's my diagram.

this is not a formal proof, but should give you some ideas about how to proceed. 

you can also prove that angle 4 is equal to angle 2 because they are alternate interior angles of parallel lines. 

you can also prove that angle 6 is equal to angle 5 because they are alternate interior angles of parallel lines.

5 0

3 years ago

PLEASE HELP HURRY!!!!!!!

Charra [1.4K]

As it has been given that $x=4+5i$ , $y=2-9i$ .

We need to find the value of the following:

(i) $4x-y$ , substituting the value of 'x' and 'y' in the expression, we get:

$4(4+5i)-(2-9i)=4\times 4+4\times 5i-2+9i=16+20i-2+9i$

$=14+29i$

So, $4x-y=14+29i$

(ii) $-x+3y$ , substituting the value of 'x' and 'y' in the expression, we get:

$-(4+5i)+3(2-9i)=-4-5i+3\times 2-3 \times 9i=-4-5i+6-27i$

$=2-32i$

So, $-x+3y=2-32i$

(iii) $x \times y$ , we need to substitute the value of 'x' and 'y' in the expression, for this, we can use distributive property of multiplication that says,