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daser333 [38]
2 years ago
5

What is the input of 3x-7 when it equals -1

Mathematics
1 answer:
AveGali [126]2 years ago
8 0

Answer:

21

Step-by-step explanation:

3x-7=-21

-21x-1=21

hope this helps, brainliest is always appreciated :3

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write an equation of the line that passes through the given point and is perpendicular to the given line (-5,-8) 3x-4y=10
777dan777 [17]

Answer:

y=-7/5x-15

Step-by-step explanation:


7 0
3 years ago
Can somebody help me with my geometry?
ahrayia [7]
The slope of AC is -0.4

Proof:
In triangles ABC and DBE,
∠DBE is common to both triangles.
AB = 2DB (D is the midpoint of the interval AB)
Also, BC = 2BE (E is the midpoint of the interval BC)

Thus triangles ABC and DBE are similar in the ratio 2:1

Since, they are similar, ∠BDE must equal ∠BAC (corresponding angles in similar triangles)

If ∠BDE = ∠BAC, DE must be parallel to AC (corresponding angles are equal along parallel lines)
Thus, the slope of AC = the slope of DE
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3 0
3 years ago
Find the area of the triangle. Round your answer to the nearest thousandths. <br><br> A=1/2 bh
Over [174]

Answer:

Step-by-step explanation:

height of triangle=√(11²-8.6²)=√(11+8.6)(11-8.6)=√(19.6×2.4)

=√(4×4.9×4×0.6)=4√(4.9×0.6)=4√2.94

area of triangle=1/2 bh=1/2×2×8.6×4√2.94

=34.4×√2.94

≈58.984

5 0
2 years ago
Is anyone good at paralleligram?!I will mark brainlest.for 13 points​
Black_prince [1.1K]

Answer:

Y= 15

x = 12

Step-by-step explanation:

Okay, so the sides that are across from eachother, are always equal to eachother, in a parallelogram.

So, 5y-20 = 2y + 25

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4 0
2 years ago
You were playing fetch with your dog an accidentally threw the toy and it
enyata [817]

Answer:

8.1

Step-by-step explanation:

I got this answer of the internet good luck lol

5 0
3 years ago
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