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2 years ago

Simplify the following expression, if you can see the picture the expression is as follows:

Mathematics

1 answer:

Kobotan [32]2 years ago

8 0

$\sqrt{40}=2 \sqrt{10}$ and $\sqrt{90} = 3\sqrt{10}$ , so we have $\sqrt{10}(2-1+3)$ . which is $4 \sqrt{10}$ .

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Help Please! 5=(2m-b)/(m+b)

finlep [7]

Answer:

B= -1/2m

Step-by-step explanation:

Ion know wat your solving for buh theres b

6 0

3 years ago

Read 2 more answers

A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i what is the students mistakes

Rufina [12.5K]

Answer:

1. In the multiplication of the imaginary parts, the student forgot to square of i. OR

2. The student has only multiplied the real parts and the imaginary parts.

Correct value $=22+7i$ .

Step-by-step explanation:

The given expression is

$(4+5i)(3-2i)$

A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i.

Student's mistake can be either 1 or second:

1. In the multiplication of the imaginary parts, the student forgot to square of i.

2. The student has only multiplied the real parts and the imaginary parts.

$(4+5i)(3-2i)=4\times 3+5\times (-2)i=12-10i$

Which is not correct. The correct steps are shown below.

Using distributive property, we get

$4(3-2i)+5i(3-2i)$

$4(3)+4(-2i)+5i(3)+5i(-2i)$

$12-8i+15i-10i^2$

$12+7i-10(-1)$ $[\because i^2=-1]$

$12+7i+10$

$22+7i$

Therefore, the correct value of $(4+5i)(3-2i)$ is $22+7i$ .

4 0

2 years ago

Choose the equation below that represents the line passing through the point (1, −4) with a slope of one half

murzikaleks [220]

Can I get a like plz

3 0

2 years ago

Read 2 more answers

A circle has its center at the center of a square with 3-inch sides. Find the area of the square not covered by the circle Round

Aleonysh [2.5K]

So in order for us to know the area of the square that is not covered by the circle, we need to find first both the areas of the square and the circle.
So for the area of the square it is A = sxs. And for the circle is A = pi*r^2.
Let us find the area of the square first given that the side is 3 inches.
So A = 3*3
A = 9 square inches.
Next is the area of the circle. Since the center of the circle is the same with the center of the square, the radius would be 1.5.
SO, A = (3.14)(1.5)^2
A = 2.25 (3.14)
A = 7.065 square inches.
Next, we deduct the area of circle from area of square and the result would be 1.935 in². So the answer for this would be option B.
Hope this answer helps.

7 0

2 years ago

What is the standered form of the number shown in the calculator display? 3.82e+7

ella [17]

the answer is 38200000

6 0

3 years ago