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n200080 [17]
3 years ago
8

Let x represent the measure of angle ACD, and let y represent the measure of angle BCF.

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
5 0
We know that
in the triangle ACB
∠ACB+90+34=180-----> ∠ACB=180-(90+34)----> ∠ACB=56°
∠ACD and ∠ACB-----> are supplementary angles
so
∠ACD+∠ACB=180-----> ∠ACD=180-56----> 124°------> x=124°

the answer Part 1) is x=124°

Part 2)
∠ACB+∠BCF+80=180-----> ∠BCF=180-(∠ACB+80)---> 180-(56+80)
∠BCF=180-136----> 44°-----> y=44°

the answer Part 2) is y=44°

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Greta read a 900 pages book in 15 days, reading for 5 hours every day.
lapo4ka [179]
So she reads for 5 hours every day for 15 days, how many hours is that?  well is just 5*15, or 75 hours.

so, she reads 900 pages in 75 hours, how many pages does she do in 1 hour?

\bf \begin{array}{ccll}
pages&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
900&75\\
p&1
\end{array}\implies \cfrac{900}{p}=\cfrac{75}{1}\implies \cfrac{900\cdot 1}{75}=p
3 0
3 years ago
Please helppppppop! please :)
pogonyaev

Answer:

(0, 4), (4, 2)

Step-by-step explanation:

Locate each point on the graph. If it is on the blue line, then it is a solution to the equation.

The solutions are:

(0, 4), (4, 2)

3 0
4 years ago
Read 2 more answers
In the xy-coordinate plane shown below, point P has coordinates (8,-6). Which
allsm [11]

The answer will be D

3 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST AND GIVE 50 POINTS
Alexeev081 [22]

Answer:

The correct option is;

e. 2500

Step-by-step explanation:

The formula for sample size is given by the following formula;

n = \dfrac{z^2 \times \hat p(1 - \hat p)}{\epsilon ^2}

At 95%, z = 1.96

ε = Margin of error = 0.02 = 2%

Finding the sample size, n, given only the margin of error is by the following formula;

Margin of error = 100/√n

Therefore, we have;

2 = 100/√n

√n = 100/2 = 50

n = 50² = 2500

Therefore, the correct option is e. 2500.

4 0
3 years ago
Solve for x in the equation x squared + 2 x + 1 = 17.
Whitepunk [10]

Answer:

x = negative 1 plus-or-minus StartRoot 17 EndRoot

Step-by-step explanation:

Given:

x^2+2x+1=17

We need to solve for x.

x^2+2x+1=17 \ \ \ \ equation\ 1

First we will solve L.H.S

Factorizing the equation we get;

x^2+2x+1\\=x^2+x+x+1\\=x(x+1)+1(x+1)\\=(x+1)(x+1)\\=(x+1)^2

Now Things which are equal to the same thing are also equal to one another. Since

x^2+2x+1=17

x^2+2x+1=(x+1)^2

then, according to the law of transitivity,

(x+1)^2=17

Now, applying the Square Root Principle we get:

\sqrt{(x+1)^2} =\sqrt{17}

Now Square root and square gets cancelled.

x+1=\sqrt{17} \\x=-1+\sqrt{17}

Since a square root has two values, one positive and the other negative.

x=-1\±\sqrt{17}

Hence  Final Answer is x=-1\±\sqrt{17}.

5 0
4 years ago
Read 2 more answers
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