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3 years ago

I will be taking an algebra test unit 3.12.3

Mathematics

1 answer:

Nonamiya [84]3 years ago

4 0

OKay i willl help what are the questions

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Perimeter of an isosceles triangle is 35 cm if the length of a the congruent sides is 3 times the length of the third side what

Dimas [21]

Let the length of the shortest side = x

The two longer sides that are equal = 3x

The are two equal longer sides, so their total is 3x + 3x = 6x

3x+ 3x + x= 35 Collect like terms on the left

7x = 35 Divide by 7 on both sides

x = 35/7

x = 5

Answer

Two long sides -- 15 cm each

Shortest side -- 5 cm

5 0

3 years ago

What happens to your survivor his her family

RoseWind [281]

Provide more info. And I would love to help

3 0

3 years ago

Ir[ Fairbanks, the temperature at 6:00 AM on Sunday is - 48°F. The weather forecast

mestny [16]

Answer:

The answer is 3 days

Step-by-step explanation:

Divide 48/16=3

6 0

3 years ago

6. Find the perimeter of the figure below

liraira [26]

Answer:

26 in.

Step-by-step explanation:

» <u>Concepts</u>

The perimeter for a shape is the total distance around it measured in units. The formula to find the perimeter of a trapezoid is a + b + c + d, where a & b are the bases, and c & d are the lengths of the other sides.

» <u>Solution</u>

Adding up all the sides, we get:

$11+7+4+4$
$18+4+4$
$22+4$
$26$

26 inches

3 0

2 years ago

If tan ⁡x=12/5, and 0°

Charra [1.4K]

The value of sin(2x) is $\frac{120}{169}$

Explanation:

Given that $tan x =\frac{12}{5}$

The formula for $sin(2x)$ is $\sin (2 x)=2 \sin x \cos x$

Since, $\tan x=\frac{o p p}{a d j}$

Also, it is given that $tan x =\frac{12}{5}$

Thus, $opp=12$ and $adj=5$

To find the hypotenuse, let us use the pythagoras theorem,

$\begin{aligned}h y p &=\sqrt{12^{2}+5^{2}} \\&=\sqrt{144+25} \\&=\sqrt{169} \\&=13\end{aligned}$

Now, we can find the value of sin x and cos x.

$\sin x=\frac{\text { opp }}{h y p}=\frac{12}{13}$

$\cos x=\frac{a d j}{h y p}=\frac{5}{13}$

Now, substituting these values in the formula for sin 2x, we get,

$\begin{aligned}\sin (2 x) &=2 \sin x \cos x \\&=2\left(\frac{12}{13}\right)\left(\frac{5}{13}\right) \\&=\frac{120}{169}\end{aligned}$

Thus, the value of sin(2x) is $\frac{120}{169}$

8 0

3 years ago