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tester [92]
3 years ago
5

Which expression can be used to find the sum of the polynomials? (9 – 3x2) + (–8x2 + 4x + 5)

Mathematics
2 answers:
timama [110]3 years ago
8 0

Answer:

It may not be right but try D.

Step-by-step explanation:

neonofarm [45]3 years ago
6 0

Answer:

D is correct

Step-by-step explanation:

Took the test on edg 2020

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An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s
aivan3 [116]

Answer: The answer is 314.28 cm² (approx.).


Step-by-step explanation:  Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.

We need to find the area 'A' of the circular cross-section of the pipe.

Given, diameter of the circular section is

\textup{d}=20~\textup{cm}.

So, the radius of the circular cross-section will be

\textup{r}=\dfrac{\textup{d}}{2}=\dfrac{20}{2}=10~\textup{cm}.

Therefore, cross-sectional area of the pipe is

\textup{A}=\pi \textup{r}^2=\dfrac{22}{7}(10)^2=\dfrac{2200}{7}=314\dfrac{2}{7}=314.28~.~.~.~\textup{cm}^2.

Thus, the answer is 314.28 cm² (approx.).

4 0
3 years ago
A bag contains 4 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of dr
astra-53 [7]
The probability of drawing a white marble = \frac{Number  of  white  marbles}{Total  number  of  Marbles}

∴ the probability of drawing a white marble = ³/₁₄
6 0
3 years ago
6/7 divided by 12/14 please show the work
Minchanka [31]

Answer:

1

Step-by-step explanation:

When dividing one fraction by another, the best way to solve it is to multiply by the reciprocal. The reciprocal just flipping the fraction over. So you would leave the 6/7 and the multiply by 14/12( because you are multiplying by the reciprocal). When you do that, you then can just multiply the top and the bottom to form one fraction. The numerator is 6*14 = 84, and the denominator is 7*14 = 84. So you are left with 84/84 which anything over itself is equal to one.

Hope this helps!

3 0
2 years ago
Read 2 more answers
What is the factor to change pounds to kilograms
daser333 [38]
Multiply pounds by 2.205
7 0
3 years ago
A process of inserting points between actual plotted data points or extending an actual line of data is called:
german

The <em>correct answer</em> is:


interpolating


Explanation:


Interpolation is a method of constructing new data points within the range of a discrete set of known data points.


This would include inserting data points between two known points and extending a data set.

4 0
3 years ago
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