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svlad2 [7]
3 years ago
10

Please help me if you can!!

Mathematics
1 answer:
dangina [55]3 years ago
3 0

Answer:

For the extra credit question just plant the dotss and if its a square then do what it sais

Step-by-step explanation:

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Variable expression for 3x+7
evablogger [386]

Answer:

y=3x+7

Step-by-step explanation:

Where y is the dependent variable and x is the independent variable. When we change x , Y also changes.

3 0
3 years ago
Gabriela has taken 33 quizzes and her average score so far is 8080. if she gets 100100, a perfect score, on the remaining 22 qui
allochka39001 [22]
Her average will be 100078
7 0
3 years ago
A right △ABC is inscribed in circle k(O, r). Find the radius of this circle if:
natta225 [31]

We have been given that a right △ABC is inscribed in circle k(O, r).

m∠C = 90°, AC = 18 cm, m∠B = 30°. We are asked to find the radius of the circle.

First of all, we will draw a diagram that represent the given scenario.

We can see from the attached file that AB is diameter of circle O and it a hypotenuse of triangle ABC.

We will use sine to find side AB.

\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}

\text{sin}(30^{\circ})=\frac{AC}{AB}

\text{sin}(30^{\circ})=\frac{18}{AB}

AB=\frac{18}{\text{sin}(30^{\circ})}

AB=\frac{18}{0.5}

AB=36

Wee know that radius is half the diameter, so radius of given circle would be half of the 36 that is \frac{36}{2}=18.

Therefore, the radius of given circle would be 18 cm.

8 0
3 years ago
A runner increased her distance from 9 miles to 12.5 miles a week. Find the percent increase in mileage.
kondor19780726 [428]

Answer:

<u>39 percent</u> is increase in mileage.

Thus, the correct option is B. 39%.

Step-by-step explanation:

Given:

A runner increased her distance from 9 miles to 12.5 miles a week.

Now, to find percent increase in mileage.

Previous mileage = 9 miles.

Present mileage = 12.5 miles.

<em>Mileage increase = 12.5 - 9 = 3.5 miles.</em>

Now, to get the percent increase in mileage:

\frac{Mileage\ increased}{previous\ mileage} \times 100

=\frac{3.5}{9} \times 100

=\frac{350}{9}

=38.88\%.

<u><em>Approximately the percent increase = 39%.</em></u>

Therefore, 39% is increase in mileage.

Thus, the correct option is B. 39%.

4 0
3 years ago
the temperature at noon was -3 degrees C by 10 p.m. on the same day the temperature decrease by 5.4 degrees what was the tempera
Anvisha [2.4K]

The answer is -8.4 degrees

5 0
3 years ago
Read 2 more answers
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