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sveta [45]
3 years ago
12

Please help the answer choices are and look at the picture to see that question.

Mathematics
1 answer:
IRISSAK [1]3 years ago
5 0
The last one should be the answer
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If BC = 5, DE = 9, and AB = 4, what is the length of AD?<br><br><br> 7<br> 8<br> 7.2<br> 7.5
steposvetlana [31]

There are two triangles here: ABC and ADF. These triangles are similar, and thus proportional. So, we can set up a proportion between the left side of each triangle and the base of each triangle.

AB / AD = BC / DE

4 / (4 + BD) = 5 / 9

---AD is made up of AB and DB. We know AB, but not BD, so we need to find its value to find the length of AD.

5(4 + BD) = 9 x 4

20 + 5BD = 36

5BD = 16

BD = 3.2

AD = AB + BD

AD = 4 + 3.2

AD = 7.2

Hope this helps!

8 0
3 years ago
State the quadrant or axis that each point lies in. (-5,2)
charle [14.2K]
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There are 12 cookies on the middle shelf. Three-fourths of them have red icing. How many cookies have red icing?
tensa zangetsu [6.8K]

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9 have red icing

Step-by-step explanation:

12(3/4)=9

5 0
3 years ago
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-7q + 12r = 3q - 4r what dose r equal
Elanso [62]

Answer:

r = 5y/8

Step-by-step explanation:

isolate the variable by dividing each side by factors that contain the variable.

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Does anyone know how many ways you can make 16 and 19 on a grid
sasho [114]
You can look for the number 16 on the x-axis. (bottom line) and put a finger there. Then, look for 19 on the y -axis (left line) and put a finger there. Trace your left finger to the right and your right hand up until they meet. That is (16,19)
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