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3 years ago

Determine the value of x in the figure. answers: A) x = 60 B) x = 50 C) x = 130 D) x = 65

Mathematics

2 answers:

brilliants [131]3 years ago

5 0

Answer:

x = 65

Step-by-step explanation:

This is an isosceles triangle which means that 2 angles are the same and all the angles have to equal 180.

A - 60+60+50 = 170(not 180)

50+50+60 = 160(not 180)

A is eliminated.

B is eliminated because then it will be an equilateral triangle.

C - 130+130+50 = 310(not 180)

50+50+130 = 230(not 180)

C is eliminated which leaves D.

D = 65+65+50 = 180(TRIANGLE!!!!!!!!!!)

Arada [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Since the triangle has 2 congruent sides then the triangle is isosceles and the base angles are congruent, thus

x = $\frac{180-50}{2}$ = $\frac{130}{2}$ = 65 → D

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Andrews [41]

The answer is ep I think

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3 years ago

Read 2 more answers

Can someone help me please it is from numbers 16 to 19 please someone

TiliK225 [7]

The correct answers are:

16) Mean = 10.25; Median = 10; Range = 17
17) The range.
18) 10
19) 5+5+6+6+7+8+8+8+9+9+10+10+10+10+10+11+12+12+12+13+13+15+15+22 = 246.

Explanation:

16) To find the mean, we first find the sum of the data values in the set:
5+5+6+6+7+8+8+8+9+9+10+10+10+10+10+11+12+12+12+13+13+15+15+22 = 246.

Next we divide this sum by the number of data points, 24:
246/24 = 10.25.

The median is the middle point of a data set. Since there are 24 points, this will be between two values. These two values are 10 and 10; the median is 10.

The range is found by subtracting the highest and lowest values:
22-5 = 17.

17) The mean is changed; the sum of the data values is 246. Taking 22 out of this, the sum is now 223, and we have 23 data points instead of 24; 223/23 = 9.7 for the new mean.
The median does not change; it is still 10.
The range changes; the highest value is now 15, and the lowest is 5: 15-5=10. The range is changed the most.

18) The mean is affected by the outlier and the median is not, so we use the median. This means the answer is 10.

19) The expression for the total number of cars sold is found by adding together all of the points.

6 0

3 years ago

Please help and work please

masha68 [24]

84/60=1.4
210/1.4=150
The answer is 150 cm

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3 years ago

Which polynomial represents the sum below?

FromTheMoon [43]

Answer: D. 8x² + x + 3

Sum means the answer to an addition problem. To find the sum of polynomials, we will add like terms.

<h2>What are like terms?</h2>

Like terms can be combined using addition or subtraction and have the same variables. Constants are also like terms with each other because they have no variables.

<h2>Solve</h2>

(4x² + 1) + (4x² + x + 2) Starting equation from the question

= 4x² + 1 + 4x² + x + 2 Remove brackets

= 4x² + 4x² + x + 1 + 2 Rearrange to group like terms together

= 8x² + x + 1 + 2 Add like terms with the same 'x²' variables

= 8x² + x + 3 Add like terms that are constants

Learn more about adding polynomials here:

brainly.com/question/1311115

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2 years ago

The point P(2k, k) is equidistant from A(-2, 4) and B (7,-5). Find the value of k.

mario62 [17]

Answer:

k = 3

Step-by-step explanation:

Using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A (- 2, 4 ) and (x₂, y₂ ) = P (2k, k)

AP = $\sqrt{(2k+2)^2+(k-4)^2}$

Repeat

with (x₁, y₁ ) = B (7, - 5) and P = (2k, k)

BP = $\sqrt{(2k-7)^2+(k+5)^2}$

Given that AP = BP, then

$\sqrt{(2k+2)^2+(k-4)^2}$ = $\sqrt{(2k-7)^2+(k+5)^2}$

Square both sides

(2k + 2)² + (k - 4)² = (2k - 7)² + (k + 5)² ← expand factors on both sides

4k² + 8k + 4 + k² - 8k + 16 = 4k² - 28k + 49 + k² + 10k + 25

Simplify both sides by collecting like terms

5k² + 20 = 5k² - 18k + 74 ( subtract 5k² from both sides )

20 = - 18k + 74 ( subtract 74 from both sides )

- 54 = - 18k ( divide both sides by - 18 )

k = 3

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3 years ago