what is the simplelest form of the following expression? 6c^2+2.5d-d+2c^2-3d a) 4c^2-1.5d b)6c^2+0.5d c)8c^2-1.5d d)8c^2+1.5d
Answers
Answer:
The correct option is c.
Step-by-step explanation:
The given expression is
Like terms are those terms which have same variable having same degree.
On combining like terms we get
On simplification we get
The simplest form of given expression is .
Therefore the correct option is c.
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Solve the system of equations by using the elimination method.2x – 7y = 35x – 4y= -6pls help me
The probability that a random variable is greater than or equal to z standard deviations from the mean in a standard normal distribution is p%. What can be said with certainty about the probability that the random variable is less than or equal to –z standard deviations from the mean?
If AB≅DE, BC = EF, and ∠ACB ≅ ∠DFE, then ΔABC ≅ ΔDEF.
Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the lake, the rock's distance from the lake's surface changes at a rate of -5 inches per second. If lisa holds her hand 5 feet above the lake's surface, how far from Lisa's hand is the rock 4 seconds after it hits the surface? Please show how you arrive at your answer
Answers
Among the given options, the correct graph would be the one where the y-values are shaded below a boundary line.
Unfortunately, I can't see the options you're referring to, so I'm unable to point out the specific graph. However, when choosing the correct graph, look for the shading below a boundary line or a curve that represents the inequality y ≤ some value.
Answers
The hummingbird will take 1 minute 13 seconds.
Let the time that will be taken by the hummingbird be represented by x
Note that 1 minute = 60 seconds
Based on the information given, the equation that'll be used in the question will be:
45/55 = 60/x
Cross multiply
(45 × x) = (60 × 55)
45x = 3300
x = 3300/45
x = 73.33 seconds
x = 1 minute 13 seconds
The hummingbird will take 1 minute 13 seconds.
Read related link on:
Answer:
1 2/9 minutes
Step-by-step explanation:
55 mph
55 / 60 = 11/12
11/12 of a mile = 1 minute
45 mph
45 / 60 = 3/4
3/4 of a mile = 1 minute
11/12 divided by 3/4
11/12 * 4/3
We can cross-cancel
11/3 * 1/3 = 11/9 = 1 2/9
It takes 1 2/9 minutes for the hummingbird to cross the lake
Hope this helps!
(Please let me know if I did something wrong!)
acid solution into a beaker. How many fl.
oz. of a 9% acid solution must she add to
this to create the desired mixture?
Answers
Answer:
.72x + .27 = .36(x + 3)
Answers
x = 3y-4
3 + 2x - 2y = 11
The first equation says that x is equal to "3y - 4", so you can plug in "3y - 4" for x in the second equation:
3 + 2(3y - 4) - 2y = 11
3 + 6y - 8 - 2y = 11
-5 + 4y = 11
4y = 16
y = 4
Now that you have y, you can plug it into the 1st equation to get x:
x = 3y - 4
x = 3(4) - 4
x = 12 - 4
x = 8
So, the 1st number is 8 and the 2nd number is 4.
–5
B.
-1/5
C.
1/5
D.
5
Answers
Answers
The number of degrees in one interior angle of the polygon is 108 degrees.
What is the polygon?
A polygon is a closed two-dimensional shape having straight line segments. It is not a three-dimensional shape.
Sum of interior angles of a polygon with n sides IS;
Sum of interior angles of a polygon = 540°
Equating both we can determine the number of sides
There are 5 sides in the polygon and the sum of the interior angles of a polygon is 540.
The number of degrees in one interior angle of the polygon is;
Hence, the number of degrees in one interior angle of the polygon is 108 degrees.
Learn more about interior angles here;
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