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Vanyuwa [196]
2 years ago
12

Please help it will be brainlist as long as it’s right

Mathematics
1 answer:
Vikentia [17]2 years ago
6 0

Answer:

x=32

Step-by-step explanation:

x+12=x+11+33

x+12=44

x=44-12

x=32

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What is the total surface area
Stels [109]

We have two right triangles and three different rectangles.

The formula of an area of a right triangle:

A_T=\dfrac{1}{2}l_1l_2

l₁, l₂ - legs

We have l₁ = 20cm and l₂ = 21cm. Substitute:

A_T=\dfrac{1}{2}(20)(21)=(10)(21)=210\ cm^2

The formula of an area of a rectangle:

A_R=lw

l - length

w - width

We have:

rectangle #1: l = 22cm, w = 29cm

A_{R1}=(22)(29)=638\ cm^2

rectangle #2: l = 22cm, w = 21cm

A_{R2}=(22)(21)=462\ cm^2

rectangle #3: l = 22cm, w = 20cm

A_{R3}=(22)(20)=440\ cm^2

The total Surface Area of the triangular prism:

S.A.=2A_T+A_{R1}+A_{R2}+A_{R3}\\\\S.A.=2\cdot210+638+462+440=1960\ cm^2

3 0
2 years ago
Solve 9x^2- 17x- 85 = 0 Give your solutions correct to 3 significant figures.​
dybincka [34]

Answer:

x =\frac{17}{18} +\frac{1}{18} \sqrt{3349} OR x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}

Step-by-step explanation:

9x2−17x−85=0

For this equation: a=9, b=-17, c=-85

9x2+−17x+−85=0

Step 1: Use quadratic formula with a=9, b=-17, c=-85.

x =\frac{-b + \sqrt{b^{2}-4ac } }{2a}

x  =\frac{-(-17)+\sqrt{(-17)^{2} -4(9)(-85)} }{2(9)}

x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}

4 0
2 years ago
How many times larger is 150,00 than 150
vesna_86 [32]

Answer:

100 times

Step-by-step explanation:

u have to divide to know which is bigger by how many times

6 0
3 years ago
Read 2 more answers
Help! I'll give brainliest to the first correct answer! ​
Mice21 [21]

Answer:A

Step-by-step explanation:

the answer is A

4 0
3 years ago
Read 2 more answers
2/3x=6 what does x equal
jonny [76]

minus 2/3 on both sides then you get x equals

when you do 6 / 2/3 you get your answer

5 0
3 years ago
Read 2 more answers
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