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dybincka [34]
2 years ago
6

What's the answer to this

Mathematics
1 answer:
shutvik [7]2 years ago
3 0

you would first have to multiply 20% by 3.24 and then youll get 0.648 then you subtract 3.24 by 0.648 and get 2.60. Then multiply 20% by 3.99 and get 0.798 then subtract 3.99 by 0.798 and get 3.19 then add 2.60 with 3.19 to get 5.79. 5.79 is how much she spent with 20% off

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Find the distance between the two points -4,-5 and 2,3. Show your work. ​
rjkz [21]

Answer

Steps are included the distance formula is the square root of the equation (x2-x1)^2+(y2-y1)^2

\sqrt{ \left( 2 - -4\right)^2 +  \left( 3 - -5\right)^2}\\ \sqrt{ \left( 2 +  + 0\right)^2 + \left( 3 +  5\right)^2}\\\sqrt{\left( 6\right)^2  + \left( 8\right)^2}\\\sqrt{    36  +   64 }\\ \sqrt{   100 } \approx 10

your final answer is 10

6 0
3 years ago
I need the answer, help me please
Margaret [11]
Perpendicular = opposite sign and reciprocal slope
Y = 3/2x + 1
The slope is 3/2, opposite sign = -3/2 now reciprocal = -2/3
Y = -2/3x + b
Plug in the point (6,-2)
-2 = -2/3(6) + b
-2 = -12/3 + b
-2 = -4 + b, b =2
Solution: y = -2/3x + 2
3 0
2 years ago
Read 2 more answers
Find the explicit formula for a 1 =-4,a n =a n-1 +9,n>=2
Mrrafil [7]

Given:

a_1=-4 and a_n=a_{n-1}+9 where n\geq 2.

To find:

The explicit formula for the given recursive formula.

Solution:

We know that recursive formula of an AP is:

a_n=a_{n-1}+d

Where, d is the common difference.

We have,

a_n=a_{n-1}+9

Here, d=9.

The first term of the AP is a_1=-4.

The explicit formula for an AP is:

a_n=a_1+(n-1)d

Substituting a_1=-4 and d=9, we get

a_n=-4+(n-1)9

a_n=-4+9n-9

a_n=-13+9n

Therefore, the required explicit formula for the given sequence is a_n=-13+9n.

6 0
3 years ago
4. What key features of a quadratic graph can be identified and how are the graphs affected when the constants or coefficients a
natka813 [3]
Standard quadratic equation .. y = a x^2 + b x + c 
<span>parabola 'a' not equal to zero </span>
<span>a<0 parabola opens downward </span>
<span>a>0 parabola opens upward </span>
<span>when |a| >>0 the parabola is narrower </span>
<span>when |a| is close to zero , the parabola is flatter </span>

<span>when the constant is varied it only effects the vertical position of the parabola , the shape remains the same</span>
6 0
3 years ago
Read 2 more answers
What is 2/5 divided by 5/7 in fraction form, not decimal
PIT_PIT [208]
Ok. In order to do this set up 2/5 divided by 5/7. The way you divide with fractions is by multiplying them but flipping the second fraction into 7/5 <---this is known as the reciprocal. In other words do:

2/5 x 7/5 =
14/25
There you go.
6 0
3 years ago
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