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3 years ago

I need help badly I don't really know how to finish

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

X=55, since straight lines are 180°. Y=70, since the triangle is isosceles, and the 2 bottom Angles are equal. Z=125, since the 2 opposite angles(x and y) add up to 125°

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If a set has three elements how many subsets does it have

mel-nik [20]

6 subsets are possible, but the number of subsets depends on the problem

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3 years ago

What is a polynomial

vivado [14]

A polynomial is an expression that contains several terms.

Examples include...

5x +1

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3 years ago

Leah ran 5/7 of a lap and Ryan ran 2/3 of a lap. Who ran farther and by how much?

Goryan [66]

Leah, she ran farther by 1/21

How you get the answer:

5/7
Multiply 7x3 to get the denominator and do the same to the numerator 5x3! Which is 15/21
To get 21 from 2/3 is to multiply 3x7 (denominator) and 2x7 (numerator) to get 14/21

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3 years ago

What is the length of HG?

Leviafan [203]

Answer:

$HG = 5$

Step-by-step explanation:

Given

$HE = 8mm$

$EF = 12mm$

$Area = 68mm^2$

Find the length of HG

First, it should be noted that the displayed figure is a trapezium

<em>The area of a trapezium is calculated by multiplying the sum of parallel sides by half its height;</em>

In this case;

$Area = \frac{HG + EF}{2} * HE$

Substitute the values of Area, HE and EF

$68 = \frac{HG + 12}{2} * 8$

$68 = (HG + 12) * 4$

Divide both sides by 4

$\frac{68}{4} = \frac{(HG + 12) * 4}{4}$

$17 = HG + 12$

Subtract 12 from both sides

$17 - 12 = HG + 12 - 12$

$5 = HG$

$HG = 5$

<em>Hence, the length of HG is 5mm</em>

6 0

3 years ago

What is the sum of the interior angle Measures of an 11 - gin

creativ13 [48]

$\bf \textit{sum of all interior angles in a polygon}\\\\
S=180(n-2)\quad 
\begin{cases}
n=\textit{number of sides}\\
----------\\
n=\stackrel{11-gon}{11}
\end{cases}\implies S=180(11-2)$

and surely you know how much that is.

6 0

3 years ago