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3 years ago

Really need help with this problem. Picture included

Mathematics

1 answer:

Len [333]3 years ago

8 0

The two angle measures are equal (which is the point of an angle bisector), so you have
y + 30 = 3y - 50
30 = 2y - 50 . . . . . . . . subtract y
80 = 2y . . . . . . . . . . . . add 50
40 = y . . . . . . . . . . . . . .divide by the coefficient of y

The value of y is 40.

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Mary has 16 3/4cups of flour she made one dessert that used 1 1/3cups and another than used 2 5/12cups how much flour does Mary

Alika [10]

$16 \dfrac{3}{4} - 1 \dfrac{1}{3} - 2 \dfrac{5}{12}$

$= 16 \dfrac{3 \times 3}{4 \times 3} - 1 \dfrac{1\times 4}{3 \times 4} - 2 \dfrac{5}{12}$

$= 16 \dfrac{9}{12} - 1 \dfrac{4}{12} - 2 \dfrac{5}{12}$

$= 13$

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Answer: Mary has 13 cups left.
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8 0

3 years ago

Read 2 more answers

42 is 5% of what number?

Monica [59]

Answer:

840

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Rectangles JKLM and STUV are similar. The width of JKLM Is 30 feet and the perimeter is 140 feet. The length of STUV is 8 yards.

algol13

Rectangle JKLM:
p = 140 ft
w = 30ft
l = (140 - 2(30))/2 = 40ft
A = (30)(40) = 1200 ft²

Rectangle STUV:
l = 8yd = (8)(3) = 24 ft

24ft/40ft = 3/5

so . .

w = 3/5*30 = 18ft
A = 3/5*1200 = 720 ft²

Ratio of area JKLM:STUV = 1200/720 = 5/3

5 0

3 years ago

2) Consider the quadratic sequence 72, 100, 120, 132

valina [46]

9514 1404 393

Answer:

Tn = -4n² +40n +36

Step-by-step explanation:

A graphing calculator readily performs the quadratic regression, yielding the formula ...

Tn = -4n² +40n +36

The first and second differences of the given sequence terms are ...

28, 20, 12 and -8, -8

The coefficient of the squared term is half the second difference, so is -4. Then the sequence of squared terms is -4n²:

-4, -16, -36, -64

Subtracting these values from the original sequence gives the linear sequence ...

76, 116, 156, 196

which has first term 76 and common difference 40. The equation for the n-th term of this is ...

an = 76 +40(n -1) = 36 +40n

Adding this linear sequence to the sequence of squared terms, we get ...

Tn = -4n² +40n +36

3 0

3 years ago

What are the zeros of the function h(x) = x3 − x + 6?

Lerok [7]

Set this function equal to zero and solve. You should get:
-2 and 1 + or - i√2

3 0

3 years ago