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Roman55 [17]
3 years ago
15

Select the correct difference. 5d 2 + 4d - 3 less 3d 2 - 2d + 4

Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0
<span>5d^2 + 4d - 3 - (3d^2 - 2d + 4)
=</span>5d^2 + 4d - 3 - 3d^2 +  2d - 4
= 2d^2 + 6d - 7
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What are the center and radius f the circle with equation xthe power of 2 +y power of 2 -4x -6y +8=0
Dovator [93]
<span>x² +y² -4x -6y +8=0
(x² -4x) +(y² -6y) = -8
We are going to complete square for x and y,
it should look like a²+2ab+b² = (a +b)², or </span>a²-2ab+b² = (a -b)²,
<span>
(x²-2*2x+2²) -2² + (y²-2*3y +3²)-3²=- 8
(x-2)²+(y-3)²-4-9=-8
</span>(x-2)²+(y-3)²=-8+13
(x-2)²+(y-3)²=5
<span>
Formula a circle (x-h)²+(y-k)²=R², where vertex has coordinates (h, k) 

So , for our circle  vertex (2,3) and radius = </span>√5<span>


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6 0
3 years ago
I'm not sure how to do these, slader is no assistance to me.
ki77a [65]

Answer:

Perimeter: 18 ft

Height: 7 ft

Base Area: 12

Surface Area: (7)*(8) + 2(47) = 150

Step-by-step explanation:

To find the perimeter add all the edges together.

5 + 5 + 8 = 18

To find the height look at the diagram. 7ft shows the height of the rectangle and thus is the height for the rest of the shape.

Base Area:

Multiply the length (8ft) of the base by the height of the base (3ft)

8 * 3 = 24

Then divide by 2 to get the total area of the triangle

24 / 2 = 12.

Surface Area:

To find the surface area you to need to find the specifics of each side.

The base area we already solved for which is 12. We'll get back to this in a minute. The other double sides are of 5 * 7. That equals 35. Add together 12 + 35 to get 47. That is what will go in the 2(___) box because both of those sides have 2. It is the same number when done this way versus just adding them up.

47 * 2 = 94

12 + 12 + 35 + 35 = 94

Then for the (___)(___) that would be 7ft * 8ft because it is the only side left and does not have a double so it must be separate.

7 * 8 = 56

56+94 = 150

5 0
3 years ago
Read 2 more answers
Katie works in a shoe store where she is paid $150 weekly and a
LenKa [72]
$1086.20

First let’s find her commission.

Convert 13% to a decimal
13/100=0.13
3740*0.13=468.20

Then let’s find how much she made from her weekly salary

There are 4 weeks in January, and she makes $150 each week
150*4=600

Add the commission and salary together
600+468.20=1086.2
She earned $1068.20 for the 4 weeks in January.

Hope this helped!
5 0
3 years ago
Read 2 more answers
-24÷-8-13 Calculate <br>show all your calculations​
I am Lyosha [343]

Answer: -10

Step-by-step explanation:  -24/-8 = 3

3-13 = -10

8 0
3 years ago
Read 2 more answers
If Camry had 19 bottles of soap and Bella has 20 times the amount of soap that Jimmy has and Jmmy has 2 times the amount of soap
Reptile [31]

Answer:

760

Step-by-step explanation:

Jimmy has 2 times of carmry, so multiply carmry by 2

and that is 38, Bella has 20 times Jimmy 38*2 that is 760

please give brainliest and helpful

6 0
2 years ago
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