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lana [24]
3 years ago
15

I need help with this one also don’t put a link

Mathematics
1 answer:
Nadya [2.5K]3 years ago
8 0

Answer: 306 cm^2

Step-by-step explanation:

Surface is found by add all the areas of the sides together, including sides, top and bottom. You might need to divide the 3D shape into different shapes in order to find the area of the sides/top/bottoms. Area for rectangle = bxh.

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Please help me <br>i beg you <br>PLEASE HELP ME ASAP <br><br>I SWEAR TO GOD WILL MARK YOU BRAINIEST
daser333 [38]

Step-by-step explanation:

DEFINITION: Besting: the clockwise totation (0° to 360°) from North to any line.

A) Calculate the bearings of D from A:

bearings of D from A =x

looking the picture:

x=48°+55°+180°

x+103°+180°

x=283°

B)Calculate the bearings of A from C:

bearings of A from C =y

180°+55°=y

y=235°

C) Calculate the distance between A and B:

The angle in B is 74° (Because 55°+51°+74°=180°)

Using the Law of sines:

\frac{19}{sin(74)} =\frac{AB}{sin(51)} \\\\AB=19sin(51)sin(74)\\AB=14,2\\\\

D)Calculate the distance between D and C:

Using the Law of cossines:

DC^{2} =27^{2} +19^{2} -2*27*19*cos(48)\\DC=20,09

E) A Helicopter is hovering at A at a height of 2.5Km, find angle of elevation of helicopter from C:

The triangle HBA is rectangle

\alpha =arctan(\frac{2,5}{19})

α=7,49°

5 0
3 years ago
The ratio of pretzels to crackers in a snack mix recipe is 11:9. What percent of the mix is
jeka57 [31]
55% is crackers if the 11 is crackers
6 0
3 years ago
Read 2 more answers
Which of the following is an equivalent form of the compound inequality −22 &gt; −5x − 7 ≥ −33?
Finger [1]

The equivalents of the given compound inequality are x > 3 and x ≤ 5.2 OR 3 < x ≤ 5.2

<h3>Solving inequalities </h3>

From the question, we are to determine the equivalent form of the compound inequality

We will solve the given compound inequality

The given inequality is

−22 > −5x − 7 ≥ −33

We can write that

−22 > −5x − 7 AND −5x − 7 ≥ −33

Solving  −22 > −5x − 7

5x > -7 +22

5x > 15

x > 15/5

x > 3

Also,

Solve −5x − 7 ≥ −33

−5x ≥ −33 +7

-5x ≥ -26

x ≤ -26/-5

x ≤ 5.2

Hence, the equivalents of the given compound inequality are x > 3 and x ≤ 5.2 OR 3 < x ≤ 5.2

Learn more on Inequalities here: brainly.com/question/20356565

#SPJ1

5 0
2 years ago
You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele
Aleks [24]

Answer:

Margin of Error = 10.712

Step-by-step explanation:

The provided information is:

Sample size, n = 27

Mean (\bar{x}) = 250.4

Standard deviation (s) = 32.45

Degree of freedom = n - 1 = 26

Level of significance = \alpha = 0.05

Then, Critical Value is:  t_{\frac{\alpha}{2},df}=t_{0.025,26}=2.06

Thus, Margin of Error:

\begin{aligned}E &= t_{\frac{\alpha}{2},df}\times\frac{s}{\sqrt{n}}\\&=2.06\times \frac{32.45}{\sqrt{27}}\\&=2.06\times5.20\\&=10.712\end{aligned}

6 0
3 years ago
PLEASE HELP I WILL MARK BRAINLEST!!!!! Franco is making a fruit salad. The ratio of cups of strawberries to cups of bananas is 2
andre [41]

Answer:

192 cups of bananas

Step-by-step explanation:

All you do is multiply 48 by 4 cups of bananas in order to get how many cups of bananas he will need to make 48 cups of fruit salad = 192

48 • 4 = 192

8 0
4 years ago
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