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just olya [345]
3 years ago
14

On a coordinate plane, triangle D E F has points (negative 8, 8), (10, negative 2), and (negative 8, negative 8). Find the area

of the triangle DEF. Area = ___ square units
Mathematics
1 answer:
defon3 years ago
7 0

Answer:

144

Step-by-step explanation:

just did it

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Expand and simplify (x + 3)(x + 5)<br><br><br><br>​
Ann [662]
Answer (apply the FOIL method)

X^2+8x+15
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2 years ago
Read 2 more answers
Ed takes five 100-point tests in his algebra class. He scores 87, 85 and 87 points on the first three tests. If the scores of hi
trasher [3.6K]

Answer:

Step-by-step explanation:

When we take an average of something, we have to add up all the data on the somethings and then divide by the number of somethings we have. Ed takes 5 tests, and we have scores for them; we also have his current average. What we don't know for sure are 2 of the 5 test scores, but we have enough to determine what they are.

If one test has a score of x, and the other test is 3 points less than that, the score on that last test is x - 3. Putting all of that together into an average problem:

\frac{87+85+87+x+(x-3)}{5}=90 and simplfiying a bit:

\frac{256+2x}{5}=90. Multiply both sides by 5 to get

256 + 2x = 450; subtract 256 from both sides to get

2x = 194 and divide by 2:

x = 97

The one test score was a 97 and the other one, which was 3 less than that, was a 94.

3 0
3 years ago
Hi what is the answer please to this question
Natali5045456 [20]

Answer:

B

Step-by-step explanation:

B is next to the less than or equal to symbol so a person most be TALLER OR THE SAME HEIGHT AS  1.4

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2 years ago
What 2 whole numbers is the square root of 75 between?
Nataliya [291]

Answer:

8 and 9

Step-by-step explanation:

7 0
3 years ago
X2+7x-8 please factor
vova2212 [387]
x^2+7x-8=x^2+8x-x-8=x(x+8)-1(x+8)=(x+8)(x-1)
8 0
3 years ago
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