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RoseWind [281]
3 years ago
5

HELPPP What is the value of T ?

Mathematics
2 answers:
Drupady [299]3 years ago
7 0
30t+20=60
30t=40
t=1.3333
ANTONII [103]3 years ago
4 0

Answer:

t=\frac{4}{3} \\\\t=1.333333333333333....\\\\t=1\frac{1}{3}

Step-by-step explanation:

A triangle's angles are <u><em>always</em></u> 180° total degrees.

The given triangle has the three little marks showing that the lengths are the same, so this means that the angles are also congruent. That means that the triangle is an equilateral triangle.

Set an equation where the given angle of F represents every angle and whose sum is 180°:

(30t+20)+(30t+20)+(30t+20)=180\\\\3(30t+20)=180

Solve for t. Use the distributive property:

90t+60=180

Work to isolate the variable. Use inverse operations to cancel out the 60. Subtract 60 from both sides:

90t+60-60=180-60\\\\90t=120

Use inverse operations to isolate t. Divide both sides by 90:

\frac{90t}{90} =\frac{120}{90} \\\\t=\frac{4}{3}

The value of t is \frac{4}{3}.

:Done

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Work out the total surface area of this hemisphere which has a radius of 10 cm.
julsineya [31]

Answer:

200π cm^2

Step-by-step explanation:

Surface area of an emisphere = radius^2 * π * 2 = 10^2 * π * 2 = 200π cm^2

6 0
3 years ago
This figure is made up of a quadrilateral and a semicircle.
Arturiano [62]

Answer:

The correct option is B. The area of the figure is 40.4 units².

Step-by-step explanation:

The line AB divides the figure in two parts one is a rectangle and another is semicircle.

The distance formula is

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

The length of AB is

AB=\sqrt{(2+3)^2+(4-2)^2}=\sqrt{25+4}=\sqrt{29}

The length of AD is

AD=\sqrt{(-1+3)^2+(-3-2)^2}=\sqrt{4+25}=\sqrt{29}

Since AB=AD, therefore ABCD is a square. The area of the of square is

A_1=a\times a=\sqrt{29}\times \sqrt{29} =29

The area of square is 29 units².

The area of a semicircle is

A_2=\frac{\pi}{2}r^2

Since AB is the diameter of the semicircle, therefore the radius of the semicircle is

r=\frac{d}{2}=\frac{\sqrt{29}}{2}

The area of the semicircle is

A_2=\frac{3.14}{2}(\frac{\sqrt{29}}{2})^2=40.3825

The area of the figure is

A=A_1+A_2=29+11.2825=40.3825\approx 40.4

Therefore the area of the figure is 40.4 units². Option B is correct.

5 0
4 years ago
Each of the 15,000 New England minutemen who occupied the hills in Boston was supplied with only 36 cartridges. If all 15,000 fi
aev [14]
Well, 1/4 of 36 is 9, so 15000*9= 13500 cartridges in all
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What is .35 as a decimal and fraction
Bingel [31]

Answer:

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Step-by-step explanation:

6 0
4 years ago
Can u help me with this question please
Levart [38]
The graph is linear because it is a straight line with a constant slope. Can u mark me brainliest, thank, rate 5 stars and have a good day!
5 0
3 years ago
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