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Olenka [21]
3 years ago
12

Sam is building a model of an antique car. The scale of his model to the actual car is 1:10. His model is 12

Mathematics
1 answer:
Marizza181 [45]3 years ago
4 0
120 inches? I tried doing it in my head lol it’s prob wrong.
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Please help me find out what x=
Lunna [17]
X = 47
you subtract 133 from 180
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3 years ago
Use the Quadratic Formula to solve x2 + 20x + 98 = 0
Lubov Fominskaja [6]
ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta \ \textless \  0\ then\ no\ solution\\\\if\ \Delta =0\ then\ one\ solution\ x_0=\dfrac{-b}{2a}\\\\if\ \Delta \ \textgreater \  0\ then\ two\ solutions\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\-----------------------------

x^2+20x+98=0\\a=1;\ b=20;\ c=98\\\\\Delta=20^2-4\cdot1\cdot98=400-392=8 \ \textgreater \  0\\\sqrt\Delta=\sqrt8=\sqrt{4\cdot2}=\sqrt4\cdot\sqrt2=2\sqrt2\\\\x_1=\dfrac{-20-2\sqrt2}{2\cdot1}=\dfrac{-20-2\sqrt2}{2}=-10-\sqrt2\\\\x_2=\dfrac{-20+2\sqrt2}{2\cdot1}=\dfrac{-20+2\sqrt2}{2}=-10+\sqrt2
3 0
3 years ago
26,720 inches are equal to _______ miles.
Karo-lina-s [1.5K]

Answer:  0.42171717 miles

Step-by-step explanation:

 for  inches to mile conversion  divide  by 63350

so got 0.421717

6 0
3 years ago
PLSS I NEED HELP ASAP BECAUSE ITS DUE SOON
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D. 10 x 62

If one row needs 62 bricks and there's 10 rows, you multiply them to get how many bricks nick needs
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Solve 3x + y = -5 -2x + 3y = 18 with the substitution method PLEASE HELPPPP
valina [46]

Hey! Great to see you again.

Based on what we learned last time, we can apply it to this equation!

Solve 3x+y =−5 for y:

3x+y=−5

3x+y+−3x=−5+−3x Let us add -3x to both sides.

y=−3x−5.

Substitute −3x−5 for y in −2x+3y=18:

−2x+3y=18

−2x+3(−3x−5)=18

−11x−15=18 Simplify both sides :)

−11x−15+15=18+15 Add 15 to each side.

−11x=33

x = -3

Now solve for y.

−3 for x in y=−3x−5:

y=(−3)(−3)−5

Can you solve this equation? Let me know if you need help, tell me what you get! :) That will be your y answer. :D

Have a great one!

5 0
3 years ago
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