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Alona [7]
3 years ago
14

Joan and Jane are sisters. Jean is Joan's daughter and 12 years younger than her aunt. Joan is twice as old as Jean. Four years

ago, Joan was the same age as Jane is now, and Jane was twice as old as her niece. How old is Jean?
Mathematics
1 answer:
enot [183]3 years ago
8 0
Jane is 16 twices as old as joan
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lbvjy [14]
C. 130,90,130.

#01234, the tenths number stays the same
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4 0
3 years ago
How many solutions does 2/3 (3x - 15) = x - 10 have?
irina1246 [14]

Answer:

2/3 [3x - 15] =x-10

open the brackets first

[2/3 x3x] -[2/3 x15 =x - 15

2x - 10 =x - 10

put the like terms together

2x -x =-10 +10

x=0

Step-by-step explanation:

6 0
2 years ago
Help please i dont know how to do it
dezoksy [38]

Answer:

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3 0
3 years ago
Triangle abc is similar to triangle def solve for both unknown sides
Serhud [2]

Given:

Triangles ABC and DEF are similar triangles.

AB = 6 m, BC = 16 m, CA = 15 m, DE = x, EF = 32 m, FD = y

To find:

The values of unknown sides, i.e., x and y.

Solution:

We know that the corresponding parts of similar triangles are proportional and triangles ABC and DEF are similar triangles, so

\dfrac{AB}{DE}=\dfrac{BC}{EF}=\dfrac{CA}{FD}

\dfrac{6}{x}=\dfrac{16}{32}=\dfrac{15}{y}

\dfrac{6}{x}=\dfrac{1}{2}=\dfrac{15}{y}

Now,

\dfrac{6}{x}=\dfrac{1}{2}

6\times 2=1\times x

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Similarly,

\dfrac{1}{2}=\dfrac{15}{y}

1\times y=15\times 2

y=30

Therefore, the measure of unknown sides are x = 12 m and y = 30 m.

7 0
2 years ago
Find the slope of the line through the given points . If the slope of the line is unrefined, state so(7,4) and (3,6)
Alja [10]

Given the following question:

Point A = (7, 4) = (x1, y1)

Point B = (3, 6) = (x2, y2)

To find the slope use rise over run:

\begin{gathered} \frac{y2-y1}{x2-x1} \\ \frac{6-4}{3-7} \\ 6-2=2 \\ 3-7=-4 \\ \frac{2}{-4} \\ \frac{2}{-4}=-0.5 \\ m=-0.5 \end{gathered}

m = -0.5

4 0
1 year ago
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