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PilotLPTM [1.2K]
3 years ago
5

Will upvote

Mathematics
1 answer:
alekssr [168]3 years ago
8 0

Answer:

c) Q( 5, -2) , S(-3,4)

P( 5,2) → Q( 5, -2)

Q(-3,-4)→ S(-3,4))

Step-by-step explanation:

<u>Explanation:-</u>

Given points are  P( 5,2) and Q(-3,-4)

Points P and R   reflection  across the x-axis then the co-ordinate point is transformed to  (x,y)→ (x,-y)

P( 5,2) → Q( 5, -2)

Q(-3,-4)→ S(-3,-(-4))

Q(-3,-4)→ S(-3,4))

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3. A sign company is building a sign with the dimensions shown. What is the area, in square feet, of the sign? Round to the near
Aleks04 [339]

Answer:

84.87sq ft

Step-by-step explanation:

Let ABC be the triangle and  AD be the perpendicular on BC such that BD=DC=7ft.

Now, it is known that \frac{DC}{AC}=cos60^{0}

AC=\frac{7}{\frac{1}{2}}

AC=7ft

Now, in triangle ADC, we have

(AC)^{2}=(AD)^{2}+(DC)^{2}

(14)^{2}=(AD)^{2}+(7)^{2}

196-49=(AD)^{2}

AD=12.12ft

Now, area of the triangle=\frac{1}{2}{\times}b{\times}h

=\frac{1}{2}{\times}14{\times}12.12

=84.87sq ft

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8 0
3 years ago
25. Save the simultaneous equations 2x-y=4;x+y=5​
Helen [10]

Answer:

x = 3

Step-by-step explanation:

2x - y = 4

x + y = 5

y = 5 - x

2x - (5 - x) = 4

2x + x - 5 = 4

3x = 9

x = 3

3 0
2 years ago
Find the amount of each ordinary annuity. interest is compounded annually.
Svetlanka [38]
R=$350, I=0.05, n=15
A = 350 (1+0.05)^15 = 350(1.05)^15 = 350 (2.0789)=727.62 <- Answer
6 0
3 years ago
Please please help!!!! According to the probability distribution below, what is the expected value of X? X 0 1 2 3 4 5 P(X) 0.3
Novay_Z [31]

Answer:

D.) The expected value is 1.78

Step-by-step explanation:

The expected value of a probability distribution is evaluated using the formula.

Expected Value, E(X)=\sum^{n}_{i=1}x_iP(x_i)

Therefore, from the given probability distribution, we have:

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E(X)=1.78

The Expected value of X is 1.78.

The correct option is D.

4 0
3 years ago
I'd really appreciate it if anyone could help! :) Giving brainliest.
Naddik [55]

Answer:

A

Step-by-step explanation:

The easiest way to simplify the expression below is using a property: if we take random non-0 number  to the 0 power, we finally get 1, so a^0=1

4 0
3 years ago
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