1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
harina [27]
3 years ago
8

4 points: A,B,C and D are marked in order on a line such that AB:AC = 3:5 and BD:CD= 7:2. If CD is 10cm long, find the length of

AB.
Mathematics
1 answer:
Jlenok [28]3 years ago
4 0
<span><span>ab:ac=3:5
bd:cd=7:2
if cd is 5 cm then cd=2:5 then ab=3:x

2:5=3:x
15=2x
x=15/2
x=7.5 cm</span><span>
Happy studying! ^_^</span></span>
You might be interested in
Casey bought 15.4 pound turkey and an 11.6 pound ham for thanksgiving and paid 38.51. Her friend Jane bought a 10.2 pound turkey
Angelina_Jolie [31]

Answer: $1.74

Step-by-step explanation: Let the cost per pound for Turkey=T

Let the cost oer pound for Ham =H

 

15.4T + 11.6H =38.51

10.2T + 7.3H =24.84, solve for T, H

T = $1.19 per pound for Turkey

H = $1.74 per pound for Ham.

6 0
3 years ago
Find the slope of the line through each pair of points (-2,-1) and (8,-3)
erastova [34]
Slope = y2 - y1/x2 - x1
          = -3 - (-1)/8 - (-2)
          = -3 + 1/ 8 + 2
          = -2/ 6
          = - 1/3

hope this helps :)

6 0
3 years ago
Read 2 more answers
Mark wants to use a grid to model the percent equivalent of the fraction 2/3. How many grid squares should be shade? What percen
natka813 [3]

Answer:

66 + 1 ( not fully shaded ) squares will be shaded.

66.67% region will be shaded

Step-by-step explanation:

It is given that Marks uses a grid to model percent equivalent of \frac{2}{3}.

Let us assume that Mark uses a model containing 100 grids.

Now, as the grids are divided into region equivalent to \frac{2}{3} i.e. it is divided into 3 parts.

Moreover, 2 out of those 3 parts will be shaded.

As, \frac{2}{3} =0.6667

i.e. \frac{2}{3}=66.67%

So, it gives us that 66 squares in the grid will be fully shaded and one will not be fully shaded.

Hence, 66 + 1 ( not fully shaded ) squares will be shaded and in percent, 66.67% of the region will be shaded.

6 0
2 years ago
Read 2 more answers
12 (x+1/6) = 8 20 points
Aliun [14]

Answer:

12x + 2

Step-by-step explanation:

12 is multiplyed by both the x and the (1/6) since it is outside the equation.

so 12 times x = 12x since we dont know what x is

and 12 times (1/6) = (12/6) = 2

7 0
2 years ago
It says find the surface area of the pyramid. and the answer if the surface area is.
Debora [2.8K]

Answer:

you need to add all those numbers

6 0
3 years ago
Other questions:
  • What is the volume of a rectangular prism whose edges measure 3 ft, 3 ft, and 2 ft?
    5·1 answer
  • Whole numbers greater than 6 but less than 16
    7·2 answers
  • What is the area of a square with a side length of two
    14·1 answer
  • For a given recipe, 8 cups of flour are mixed with 4 cups of sugar. How many cups of flour should be used if 6 cups of sugar are
    8·1 answer
  • What function represents exponential decay?
    7·1 answer
  • Question 4 (10 points)
    14·1 answer
  • PLS HELP. I dont understand math
    11·1 answer
  • 1 Fifty-five students, 4 teachers, and 3
    8·1 answer
  • Gabi tried to solve an equation step by step. \qquad\begin{aligned} 0.1(0.5m+6)&amp;=2\\\\ \\ 0.5m+6&amp;=20&amp;\green{\text{St
    13·1 answer
  • Solve for the missing side length for the triangle below
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!