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Rom4ik [11]
3 years ago
6

Identify the similar triangles them find the x

Mathematics
1 answer:
Alex Ar [27]3 years ago
4 0

Answer:

ADB and ABC are similar

x = 8

Step-by-step explanation:

hypotenuse in ADB = \sqrt{4^2 + 2^2 } = \sqrt{20}

since two triangles are similar,

\frac{2+x}{\sqrt{20} } = \frac{\sqrt{20}}{2}

solving for x, x=8

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Why do we divide by 4
Phantasy [73]
This kind of question would actually be very dependable. So, let's suppose that we would have a number as 16. We would then have to divide this number by 4, mainly because we would want to find how many 4's would go into the number 16. But this would actually be an example. So, whatever math problem you may have, just remember this technique, how many numbers would go into that specific number. 
5 0
3 years ago
Given f (x) = 2x² +1evaluate f (-1).
soldi70 [24.7K]

Answer:

3

Step-by-step explanation:

f(x) = 2x^2 + 1

f(-1) means that wherever you see an x on the right hand side, you substitute -1.

f(-1) = 2(-1)^2 + 1 = 2 + 1 = 3

8 0
3 years ago
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Which angle is the included angle for DE and FE ?<br> D<br> E<br> F
Tasya [4]
<span>angle for DE and FE is <E

answer
E</span>
4 0
4 years ago
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help with this !!!!!!!!!!!!!!!!!!!!
Gnom [1K]

Answer:

Using Pythagorean theory : a²+9²=15²

=> a²=225-81=144

=> a = √144 = 12

Step-by-step explanation:

8 0
3 years ago
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A restaurant chef bought potatoes at four different stores. The table shows the amount of the potatoes she bought at each store
hichkok12 [17]

Answer:

The way to answer this question is to find out the price per pound potato by dividing the amount the restaurant chief paid by the number of pounds bought.

Your question lacks details on the pounds bought in the other stores so I will assume these figures and you can use it as a reference.

Restaurant B - 2 pounds

Restaurant C - 12 pounds

Restaurant D - 5 pounds

Price per pound

Restaurant A = 6.60/8

= $0.83

Restaurant B = 3.50/2

= $1.75

Restaurant C = 9.75/12

= $0.82

Restaurant D = 4.80/8

= $0.96

<u><em>Restaurant C </em></u><em>has the lowest price per pound for potatoes. </em>

3 0
3 years ago
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