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Genrish500 [490]
3 years ago
13

Write an expression for the calculation add 3 and 8 and then multiply by 9

Mathematics
2 answers:
nikdorinn [45]3 years ago
8 0
(3 + 8)9

That is the expression
melisa1 [442]3 years ago
5 0

Hey there!

Basically it wants you to add 3 and 8 from each other, what ever the answer to that part, you multiply the result by 9

Here this is what i meant

3 + 8 = 11 \\ 11 ( 9) = 99

Or you could do this method too!

(3 +8) (9) \\ \\ 3 + 8 = 11 \\ 11(9) \\ = 99

They both give you the result of 99

So, I am assuming your expression would look like this: (3 + 8) * 9

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

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HELP! WILL AWARD BRAINLIEST TO WHOEVER ANSWERS BOTH PARTS CORRECTLY!!
rewona [7]

check the picture below.

now, we're assuming the trapezoid is an isosceles trapezoid, namely AD = BC, and therefore the triangles are twins.

incidentally, b is the height of the trapezoid and likewise is also the altitude or height of the concrete triangle.

so we can simply get the area o the trapezoid, notice the bottom base is a+185+a, and then get the area of the concrete triangle and subtract the triangle from the trapezoid, what's leftover is just the vegetation area.

\bf \begin{cases} a=283\cdot cos(80^o)\\ a\approx 49.14\\ --------\\ b=283\cdot sin(80^o)\\ b\approx 278.70 \end{cases}\\\\ -------------------------------\\\\ \textit{area of a trapezoid}\\\\ A=\cfrac{h(x+y)}{2}~~ \begin{cases} x,y=\stackrel{bases}{parallel~sides}\\ h=height\\ ----------\\ x=185\\ y\approx \stackrel{a+185+a}{283.28}\\ h\approx\stackrel{b}{278.70} \end{cases} \\\\\\ A=\cfrac{278.70(185+283.28)}{2}\implies A\approx 65254.818

so that's the area of the trapezoid, now let's get the area of the triangle.

\bf \stackrel{triangle}{\cfrac{1}{2}(185)(b)}\implies \cfrac{1}{2}(185)(278.70)\qquad \approx 25779.80\\\\ -------------------------------\\\\ \stackrel{\textit{area for vegetation}}{\stackrel{\textit{area of trapezoid}}{65254.818}~~-~~\stackrel{\textit{area of triangle}}{25779.80}}\implies 39475.018

since we know 36 yd² cost 12 bucks, then how much will it be for 39475.018 yd²?

\bf \begin{array}{ccll} yd^2&\$\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 36&12\\ 39475.018&x \end{array}\implies \cfrac{36}{39475.018}=\cfrac{12}{x}\implies x=\cfrac{39475.018\cdot 12}{36} \\\\\\ x\approx 13158.339\overline{3}

3 0
3 years ago
Please please help! I will mark you brainliest thank you math experts
TEA [102]

Answer:

Right skewed Histogram.

Explanation:

As the peak of the graph lies to the left side of the centre.

6 0
2 years ago
To the nearest tenth, which is the perimeter of ABC. Geometry
qwelly [4]

Answer:

23.6

Step-by-step explanation:

<u><em>Finding AC:</em></u>

Cos 61 = \frac{adjacent}{hypotenuse}

0.48 × 10 = Adjacent

AC = 4.8

<u><em>Now, CB:</em></u>

Cos 29 = \frac{adjacent}{hypotenuse}

0.87 × 10 = CB

CB = 8.8

<u><em>The perimeter:</em></u>

=> 10+4.8+8.8

=> 23.6

3 0
2 years ago
Read 2 more answers
Solve.
adoni [48]
6+(-2)+2•(-8)•42=6-2+(-16)•42=4+(-672)=4-672=-668
5 0
3 years ago
The sphere weighs 4 pounds. sorry no picture but you can ask me for it in the comments What is the weight of the cylinder? What
Zolol [24]

Answer:

The weight is 4 pounds :D

Step-by-step explanation:

3 0
2 years ago
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