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Elodia [21]
2 years ago
10

I need some help with this! i want my grade to go up

Mathematics
2 answers:
mart [117]2 years ago
7 0

Answer:

44.159

Step-by-step explanation:

zmey [24]2 years ago
4 0
Answer is -square root of 97
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Which situation(s) could by modeled by a linear function?
liraira [26]
1 and 111 only would be your answer
4 0
3 years ago
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What is the area of triangle EDF?
Ann [662]

Answer:

4.5

Step-by-step explanation:

∠BAC ~ ∠EDF means that the triangles are similar. So the legs of the triangle share the same proportions, even if the sizes are different.

Since they share the same proportions, the same operations can be performed on each base to find the area.

The answer can be found with the knowledge that the area of a triangle is half of the height * width. You know the width of ∠BAC is 4, and the area is 8, so 16 (the area doubled) / 4 is the height. The width and height of ∠BAC are the same, and since the proportions are also the same, the width and height of ∠EDF are both 3. So the area is the width (3) times the height (3) divided by 2.

3*3 = 9

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So the area is 4.5

6 0
3 years ago
Solve using substitution method x-y=11;3x+10y=-6<br> explain please
Tatiana [17]
Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
Add y to both sides and you get x=11+y
Next, substitute 11+y for x in the other equation so you get...
2(11+y) +10y=-6
Next distribute the 2 throug the 11 and the y
22+2y+10y=-6
12y=-28
y=-28/12
reduce this fraction to make this easier.
y=-7/3
Now plug in why to either of the equations to find x
x-(-7/3)=11
x+7/3=11
x=11-(7/3)
x=(33/3)-(7/3)
x=26/3
so x = 26/3 and y = -7/3
you can also check to see if this is correct by substituting each of these values into the equations.
6 0
3 years ago
Graph the inequality x &gt; 3.
Marianna [84]
The graph would look like first one, or like this: 

Hope this helped! c:

6 0
3 years ago
Read 2 more answers
Perform the indicated operation. 8/a - 6/a + 7/a
Jlenok [28]

Answer:

9/a

Step-by-step explanation:

8/a - 6/a + 7/a

Since the denominators are the same, we can add the numerators

8-6+7 =9

Then put it over the common denominator a

9/a

3 0
3 years ago
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