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Lelechka [254]
3 years ago
7

Please help! ill mark you as brainleist if you get it correct!​

Mathematics
2 answers:
GarryVolchara [31]3 years ago
6 0

Answer:

7.96

Step-by-step explanation:

50/2 = 25

25/3.14 = 7.96

sveta [45]3 years ago
4 0

Answer:

7.96

Step-by-step explanation:

50/3.14

15.92

15.92/2

7.96

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You build and sell toy cars for $36 each. So far, you have built 25 toy cars. How many more toy cars will you have to build and
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You need to build 20 more toy cars
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Given the parabola below, find the endpoints of the latus rectum. (x-2)^2=-20(y+2)
Shtirlitz [24]

Answer:

The endpoints of the latus rectum are (12, -7) and (-8, -7).

Step-by-step explanation:

A parabola with vertex at point C(x, y) = (h,k) and whose axis of symmetry is parallel to the y-axis is defined by the following formula:

(x-h)^{2} = 4\cdot p \cdot (y-k) (1)

Where:

y - Independent variable.

x - Dependent variable.

p - Distance from vertex to the focus.

h, k - Coordinates of the vertex.

The coordinates of the focus are represented by:

F(x,y) = (h, k+p) (2)

The <em>latus rectum</em> is a line segment parallel to the x-axis which contains the focus. If we know that h = 2, k = -2 and p = -5, then the latus rectum is between the following endpoints:

By (2):

F(x,y) = (2, -2-5)

F(x,y) = (2,-7)

By (1):

(x-2)^{2} = -20\cdot (-7+2)

(x-2)^{2} = 100

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There are two solutions:

x_{1} = 2 + 10

x_{1} = 12

x_{2} = 2-10

x_{2} = -8

Hence, the endpoints of the latus rectum are (12, -7) and (-8, -7).

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Mrs. Rodriquez has 24 students in her class. Ten of the students are boys. Jeff claims that the ratio of boys to girls in this c
Artyom0805 [142]

Answer:

See Below

Step-by-step explanation:

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So the ratio of boys to girls should be 5 : 7 and not 5 : 12

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