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3 years ago

Please help me and answer!! 50 POINTS! i had to reupload oops

Mathematics

2 answers:

UNO [17]3 years ago

8 0

Answer:Umm i have no idea because im in middle school, sorry

Step-by-step explanation:

DIA [1.3K]3 years ago

6 0

For janice calculation , the answer is D, they don’t have the same size

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Calculate the length of AB using Sine rule

vovikov84 [41]

Answer:

Approximately $22.2\; \rm m$ .

Step-by-step explanation:

By sine rule, the length of each side of a triangle is proportional to the sine value of the angle opposite to that side. For example, in this triangle $\triangle ABC$ , angle $\angle A$ is opposite to side $BC$ , while $\angle C$ is opposite to side $AB$ . By sine rule, $\displaystyle \frac{BC}{\sin{\angle A}} = \frac{AB}{\sin \angle C}$ .

It is already given that $BC = 22.4\; \rm m$ and $\angle A = 58^\circ$ . The catch is that the value of $\angle C$ needs to be calculated from $\angle A$ and $\angle B$ .

The sum of the three internal angles of a triangle is $180^\circ$ . In $\triangle ABC$ , that means $\angle A + \angle B + \angle C = 180^\circ$ . Hence,

$\begin{aligned}\angle C &= 180^\circ - \angle A - \angle B \\ &= 180^\circ - 58^\circ - 65^\circ \\ &= 57^\circ\end{aligned}$ .

Apply the sine rule:

$\begin{aligned} & \frac{BC}{\sin{\angle A}} = \frac{AB}{\sin \angle C} \\ \implies & AB = \frac{BC}{\sin{\angle A}} \cdot \sin \angle C \end{aligned}$ .

$\begin{aligned}AB &= \frac{BC}{\sin{\angle A}} \cdot \sin \angle C \\ &= \frac{22.4\; \rm m}{\sin 58^\circ} \times \sin 57^\circ \\ &\approx 22.2\; \rm m\end{aligned}$ .

5 0

3 years ago

(01.01 MC) Monica earned $60 from a bonus plus $8.50 per hour (h) she worked this week. Which of the following expressions best

Anna11 [10]

Answer:

Option (1)

Step-by-step explanation:

Monica earned a bonus = $60

Per hour earning in addition to bonus = $8.50

Let she worked for 'h' hours this week.

Then total earning from the hourly rate = $8.50h

Total earning for the week = Earning of 'h' hours + Bonus earned

= $(8.50h + 60)

Therefore, Option (1) will represent Monica's earnings for the week.

8 0

4 years ago

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Extra points pls help!!

Evgesh-ka [11]

Answer:

One sec I’m doing it rn

Step-by-step explanation:

7 0

3 years ago

a sphere fits snugly inside a 6-in. cube as shown. what is the volume of the region inside the cube but outside the sphere

expeople1 [14]

Assuming that means the diameter is 6in

so then

vsphere=(4/3)pir^3
r=d/2
d=6
6/2=3=r

vcube-vsphere=space
vcube=side^3=6^3=216
vsphere=(4/3)pi3^3=36pi=113.093755

space=216-113.083755=102.9026644707 cubic inches of empty space

6 0

3 years ago

If a sample of gold were reduced to the smallest possible particles of pure gold, which statement would most accurately describe

yuradex [85]

Answer:

The sample would be reduced to atoms of gold.

Reason: All things are made up of atoms.

3 0

3 years ago

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