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Goshia [24]
3 years ago
14

I need help with this ^

Mathematics
1 answer:
ladessa [460]3 years ago
7 0
B + 24 + 7b + 4b = 180
12b + 24 = 180
12b = 156
b = 13
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What is the slope of the line below
tatyana61 [14]

Slope is change in y over change in c.

Using the two dots shown:

(5,8) (3,2)

Slope = (2-8)/(3-5) = -6/-2 = 3

The slope is 3

5 0
2 years ago
Please help!
frosja888 [35]

a. The center of the circle will be the coordinate point of the marked point inside the circle.

center: (3,-5)

The radius is the distance between the center and any point on the circle.

radius: 4 units

b. standard form for circles: (x-h)²+(y-k)²=r² where (h,k) is the center

standard form: (x-3)²+(y+5)²=16

c. Simplify equation in standard form to get general form.

(x-3)²+(y+5)²=16

x²-6x+9+y²+10y+25=16

general form: x²+y²-6x+10y+18=0

Hope u find this useful!

7 0
3 years ago
A freight train travels at 30 mph. If the freight train is 300 miles ahead of an express train traveling at 55 mph, how long wil
melisa1 [442]
Distance<-------------300--------------><-------------------x----------------->
          ⊕---------------------------------⊕--------------------------------------⊕                      Express                                  Freight                            Overtaking point
   Speed 55                              speed 30

Let x be the distance travelled by Freight until the point of overtaking
Time = Distance/Speed, then:

Time (freight) = Distance (fright)/Speed (freight) And
Time (Express) = Distance (Express)/Speed (Express).
Now plug in the relative number:

Time (freight) = x/30  and Time (express) = (x+300)/55. But note that both times are equal, then:
x/30 = (x+300)/55 OR (x÷30 = (x+300)÷55) [Answer C]
Now let's find the distance x. Cross multiplication;

55x= 30(300+x) →55x = 9,000 + 30x
55x - 30x = 9,000 → 25x = 9,000 and x = 9,000/25 = 360 miles
Time needed for Freight to travel 360 m = 360/30= 12 Hours
Time needed for Express to travel (300+360) m = 660/55= 12 Hours
As you see, it's the same time of 12 hours
Don't forget that Distance = Speed x time or time = Distance/Speed, etc.

4 0
3 years ago
Read 2 more answers
The formula Sn =
kobusy [5.1K]

Answer:

I am English read I know math not

6 0
2 years ago
Express (13/15 - 7/10) as a percentage​
sasho [114]

Answer:

(13/15 - 7/10)

take lcm

<u>13*2 - 7*3</u>    = 5/30*100= 50/3%

    30

Step-by-step explanation:

8 0
2 years ago
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