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Natalka [10]
3 years ago
11

Question 5 of 10

Mathematics
1 answer:
nekit [7.7K]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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During a manufacturing process, a metal part in a machine is exposed to varying temperature conditions. The manufacturer of the
Amiraneli [1.4K]

Answer:

The temperature of the part won’t reach or exceed 141℉

Step-by-step explanation:

Substituting the value of T= 141 the given equation becomes

\begin{array}{l}{141=-0.005 x^{2}+0.45 x+125} \\ {-0.005 x^{2}+0.45 x+125-141=0} \\ {-0.005 x^{2}+0.45 x-16=0}\end{array}

we know that discriminant D = b^{2}-4 a c

Three conditions: - D < 0: imaginary roots, D = 0: real and equal roots,

D > 0: two real and unequal roots Substituting  a = -0.005, b = 0.045 and c = -16, \mathrm{D}=0.045^{2}-4(-0.005)(-16) \mathrm{D}=-0.317975 \mathrm{D}=-0.32(\text { approx. }) Therefore, it won't reach the temperature.

6 0
3 years ago
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Can someone please help will mark brainliest.
Alex Ar [27]

Answer:

3 square miles

Step-by-step explanation:

6 0
3 years ago
In seventh grade, Emile grew 3 9/10 cm, and in eighth grade he grew 4 2/5 cm. How much did his height increase during these two
Pani-rosa [81]

Answer:

8 3/10 cm

Step-by-step explanation:

Add Emile's 7th and 8th grade growth amounts together:

 3 9/10 cm

 4 4/10 cm           (This is equivalent to 4 2/5 cm.)

-----------------

  7 13/10 cm, or

  8 3/10 cm

7 0
4 years ago
What is the value of x?<br><br><br><br> A. X=45<br><br> B. X=65<br><br> C. x= 70<br><br> D. X=115
Jobisdone [24]

B. X = 65

Hope its helpful to you

3 0
3 years ago
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Which statement is true about points located in quadrant I in the coordinate
Delvig [45]

Answer:

B

Step-by-step explanation:

In Quadrant I, both the x– and y-coordinates are positive; in Quadrant II, the x-coordinate is negative, but the y-coordinate is positive; in Quadrant III both are negative; and in Quadrant IV, x is positive but y is negative.

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3 years ago
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