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vova2212 [387]
2 years ago
12

2. Is the expression 2 • 4' equal to the expression 8"? Explain your answer.

Mathematics
1 answer:
liberstina [14]2 years ago
4 0
Yes, this is because 2*4 equals 8
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What letter ??????????????????????
Natali [406]
The answer is c

It which point is on the line 0,-5
3 0
2 years ago
How many ways can you arrange 28
MaRussiya [10]

Answer:

In 6 ways 28 can be arranged

Step-by-step explanation:

1 × 28 = 28

2 × 14 = 28

4 × 7 = 28

7 × 4 = 28

14 × 2 = 28

28 × 1 = 28

Thus, In 6 ways 28 can be arranged

<em><u>-TheUnknownScientist</u></em>

3 0
3 years ago
The roots of the quadratic equation $z^2 + az + b = 0$ are $2 - 3i$ and $2 + 3i$. What is $a+b$?
AlladinOne [14]
We know for our problem that the zeroes of our quadratic equation are (2-3i) and (2+3i), which means that the solutions for our equation are x=2-3i and x=2+3i. We are going to use those solutions to express our quadratic equation in the form a x^{2} +bx+c; to do that we will use the <span>zero factor property in reverse:
</span>x=2-3i
x-2=-3i
x-2+3i=0
<span>
</span>x=2+3i
x-2=3i
x-2-3i=0
<span>
Now, we can multiply the left sides of our equations:
</span>(x-2+3i)(x-2-3i)= x^{2} -2x-3ix-2x+4+6i+3ix-6i-3^2i^2
<span>= </span>x^{2}-4x+4-9i^{2}
= x^{2} -4x+4+9
= x^{2} -4x+13
Now that we have our quadratic in the form a x^{2} +bx+c, we can infer that a=1 and b=-4; therefore, we can conclude that a+b=1+(-4)=1-4=-3.
6 0
3 years ago
ABCD is a trapezium in which AB parallel DC ,DC=30cm and AB=50cm .If X and Y are respectively the mid point of AD and BC then pr
Ratling [72]
I have attached the answer. Hope it helps.
Download pdf
3 0
2 years ago
If measure of angle X = 34° and measure of angle Z = 26°, what is the measure of angle Y
AlladinOne [14]

Answer:

120

Step-by-step explanation:

180-34=146

146-26=120

6 0
3 years ago
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