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madam [21]
3 years ago
8

3.x2 + 4x + 5 for x = -2please help asap​

Mathematics
1 answer:
Law Incorporation [45]3 years ago
8 0
Your equation is a little messed up comment me the equation you need help with
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ABC is isosceles with AB=AC=8 units and BC=6 units. D and E are midpoints of AB and BC respectively. Calculate the length of DE?
Allushta [10]
The triangle is drawn and is shown in the image attached with.

We get two similar triangles. Triangle ABC and Triangle ADE. Since the triangles are similar the ratio of their corresponding sides will be the same. 

D and E are the midpoints of AB and BC, therefore, AD and AE are both 4 units in length. Using the property of similar triangles, we can say:

AD : DE= AB : BC
AD = 4 units
AB = 8 units
BC = 6 units
DE = unknown = x units

So,

4 :x = 8 : 6 \\  \\ 
 \frac{4}{x} = \frac{8}{6}  \\  \\ 
x=4* \frac{6}{8}=3 


Therefore, the length of DE will be 3 units

6 0
3 years ago
Which of the following is a solution of 4x + 2y ≤ 6?
cestrela7 [59]

Answer:

D. (1,0)

Step-by-step explanation:

Just plug in each coordinate for x and y into 4x+2y and see which one is less than or equal to 6.

Lets go through all of the possible answers:

<u>A</u>. (0,4)

4(0) + 2(4) ≤ 6

0 + 8 ≤ 6

8 ≤ 6

This is false.  8 is not less than or equal to 6.

<u>B</u>. (5,0)

4(5) + 2(0) ≤ 6

20 + 0 ≤ 6

20 ≤  6

This is false.  20 is not less than or equal to 6.

<u>C</u>. (5,7)

4(5) + 2(7) ≤ 6

20 + 14 ≤ 6

34 ≤ 6

This is false because 35 is not less than or equal to 6

<u>D</u>. (1,0)

4(1) + 2(0) ≤ 6

4 + 0 ≤ 6

4  ≤ 6

This is true, because 4 is less than 6.  

6 0
3 years ago
5,000+600+7 in standard form (Sorry I forgot-)
goblinko [34]

Answer:

It is 5,607

Step-by-step explanation:

Its ok I forget slot to

7 0
3 years ago
Which statement is true?
timurjin [86]

Answer:

Don't mind me here hhd yk gyffghhuij b cygdyhi

8 0
3 years ago
Read 2 more answers
HELPP <br> simplify.<br> (1-x/y) / ( 1-x^2/y^2) <br> 1. X/y<br> 2. 1/y+x<br> 3. Y/y+x
dezoksy [38]

Answer: y/y+x

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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