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Gennadij [26K]
3 years ago
13

Help me to take the retake?

Mathematics
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

1. (3, 2) --> (-x, -y) = <u>b, (-3, -2)</u>

2. (3, 2) --> (-y, x) = <u>a,  (-2, 3)</u>

3. (7, 9) --> (-x, y) = <u>d, (-7, 9)</u>

4. (7, 9) --> (x + 3, y - 8) = <u>e, (10, 1)</u>

5. (-7, 9) --> (y, -x) = <u>c, (9, 7)</u>

Hope this helps!

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-2(4x - 4) + x<br> Need help<br> Show work
IgorC [24]

Answer:

Distribute:

=(−2)(4x)+(−2)(−4)+x

=−8x+8+x

Combine Like Terms:

=−8x+8+x

=(−8x+x)+(8)

=−7x+8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The coordinates of ∆ABC are A(-3, 2), B(5, 8) &amp; C(11, 0). Which type of triangle is ∆ABC? Select All that apply.
stepan [7]

Given:

The coordinates of ∆ABC are A(-3, 2), B(5, 8) & C(11, 0).

To find:

The type of the given triangle.

Solution:

Distance formula:

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using the distance formula, we get

AB=\sqrt{(5-(-3))^2+(8-2)^2}

AB=\sqrt{(8)^2+(6)^2}

AB=\sqrt{64+36}

AB=\sqrt{100}

AB=10

Similarly,

BC=\sqrt{(11-5)^2+(0-8)^2}

BC=\sqrt{(6)^2+(8)^2}

BC=\sqrt{36+64}

BC=\sqrt{100}

BC=10

And,

AC=\sqrt{(11-(-3))^2+(0-2)^2}

AC=\sqrt{(14)^2+(-2)^2}

AC=\sqrt{196+4}

AC=\sqrt{200}

AC=10\sqrt{2}

Two sides of the triangle are equal, i.e., AB=BC. So, the triangle is an isosceles triangle.

Sum of square of two smaller side is

AB^2+BC^2=10^2+10^2

AB^2+BC^2=100+100

AB^2+BC^2=200

AB^2+BC^2=AC^2

Using the Pythagoras theorem, we can say that the given triangle is a right triangle.

Therefore, the correct options are B and F.

7 0
3 years ago
What is the surface area of a sphere with a radius of 9 units?
Vinvika [58]

Answer:

see explanation

Step-by-step explanation:

The surface area (A) of a sphere is calculated as

A = 4πr² ← r is the radius, here r = 9, thus

A = 4π × 9² = 4π × 81 = 324π ≈ 1017.9 units²

4 0
3 years ago
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Given f(x)= 2x^3+kx-1, and x+1 is a factor of f(x), then what is the value of k?
VMariaS [17]

Answer:

put x=-1, and the rest will be easy

5 0
3 years ago
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A movie complex is showing the same movie in three theaters. In theater​ A, 56 of the 80 seats are taken. In theater​ B, seats a
Elden [556K]

Answer:

Theatre A has the greatest percent

4 0
3 years ago
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