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Natalija [7]
3 years ago
6

Solve. 50 + -20 - 6x x represents 7.

Mathematics
1 answer:
tiny-mole [99]3 years ago
8 0

Answer:

-12

Step-by-step explanation:

50 + -20 - 6x

First combine like terms

30 -6x

Then let x=7

30 -6(7)

30 -42

-12

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Divide: −72 ÷ 9 = A) −8 B) −7 C) −6 D) 7
Lisa [10]

Answer:

-8

Step-by-step explanation:

-72 / 9 = -8

7 0
3 years ago
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Andrea was given a $700 hiring bonus with her new job she will earn an average commission of $250 per week for the next 15 weeks
Bad White [126]

Answer:

4,450

Step-by-step explanation:

You muiltiply 250 times 15 then you add 700

8 0
3 years ago
An airplane flies 3800 km in 4 hours 45 minutes. What is its average speed in kilometers per hour?
8_murik_8 [283]

Average speed = (distance covered in some time)  /  (time to cover the distance)

4 hours 45 minutes = 4-3/4 hours = 4.75 hours

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3 0
3 years ago
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In circle O, BC=14 and DC=25. What is the length of diameter BA? -58.6 -12.2 -44.6 -30.6
Savatey [412]
The picture in the attached figure

we know that
If a tangent segment and a secant segment are drawn to a <span>circle </span><span>from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment
</span>so
DC²=BC*CA-----> CA=DC²/BC
DC=25
BC=14
CA=25²/14-----> CA=44.64
CA=BC+BA----> BA=CA-BC----> BA=44.64-14----> BA=30.64

BA is the diameter
hence
<span>the length of diameter BA is 30.64----> round to the nearest tenth---> 30.6
</span>
the answer is
<span>the length of diameter BA is 30.6</span>


7 0
3 years ago
How<br>Solve The D. E<br><br> dy/dx=2x^5 y^3 - 4y/x<br><br>​
Pachacha [2.7K]
Dy/dx (2x⁵ y³ - 4y/x)

dy/dx (2y³ x⁵ - 4y/x)

dy/dx ( 2y³ x⁵ ) - dy/dx (4y/x)

= 2y³ 5x⁴ - (-4y × 1/x²)

=
10x⁶ y³ + 4y
-------------------
x²

3 0
3 years ago
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