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Rainbow [258]
3 years ago
8

Can someone answer these ASAP

Mathematics
2 answers:
gayaneshka [121]3 years ago
4 0
Remember that straight lines are 180°. For #1 angle 1 would be 40°, since 140°+40°=180°
Readme [11.4K]3 years ago
3 0
On the first on 1=40 2=140 3=140
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This is math (the reason why i keep saying that is because im trying to say something with out it saying "add something in text
yarga [219]

Steven needs a total of 320 points to have a mean score of 80

Steven has 245 points so far

Steven needs to score at least 75 points on his last test to qualify for the team

5 0
3 years ago
Read 2 more answers
What is 103 + 343 + 252
zmey [24]

Answer:

its 698...............................

5 0
2 years ago
Is the solution of this equation extraneous?
UkoKoshka [18]

Answer:

x = - 3 is extraneous

Step-by-step explanation:

Given

\sqrt{x+7} - 1 = x  ( add 1 to both sides )

\sqrt{x+7} = x + 1 ( square both sides )

x + 7 = (x + 1)² ← distribute right side

x + 7 = x² + 2x + 1 ( subtract x + 7 from both sides )

0 = x² + x - 6 ← in standard form

0 = (x + 3)(x - 2) ← in factored form

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 2 = 0 ⇒ x = 2

As a check

Substitute these values into the equation and if both sides are equal then they are the solutions.

x = - 3 : \sqrt{-3+7} - 1 = \sqrt{4} - 1 = 2 - 1 = 1 ≠ - 3

x = 2 : \sqrt{2+7} - 1  = \sqrt{9} - 1 = 3 - 1 = 2

x = 2 is a solution and x = - 3 is extraneous

6 0
3 years ago
Read 2 more answers
What is the solution for -10 < x - 9?
algol13

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-10 < x - 9

Add 9 to both sides:

-1 < x

The correct answer would be option C

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7 0
3 years ago
Complete the statement below that show y=8^2+32x+17 being converted to vertex form
OverLord2011 [107]
\left[y \right] = \left[ 81+32\,x\right][y]=[81+32x] being converted to vertex form
7 0
3 years ago
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