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3 years ago

PLZ HELP

1 answer:

alexandr1967 [171]3 years ago

6 0

ANSWER:

The point (2, -6) is on the graph of the function.
The equation is y = -3 x.
The function is linear.
If this helps mark me brainliest thank you have a good day!’

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Given: △ABC, AB=5 sqrt 2 m∠A=45°, m∠C=30° Find: BC and AC will give brainliest!!! By the way the answer is not 5 and 3.66

Makovka662 [10]

Answer:

Therefore,

$BC=a=10\ units\\\\AC=b=13.66\ units$

Step-by-step explanation:

Consider a Δ ABC with

m∠ A = 45°

m∠ C = 30°

AB = c = 5√2

To Find:

BC = a = ?

AC = c = ?

Solution:

Triangle sum property:

In a Triangle sum of the measures of all the angles of a triangle is 180°.

$\angle A+\angle B+\angle C=180\\\\45+30+\angle B=180\\\ttherefore m\angle B =180-75=105\°$

We know in a Triangle Sine Rule Says that,

In Δ ABC,

$\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}$

substituting the given values we get

$\frac{a}{\sin 45}= \frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}$

∴ $\frac{a}{\sin 45}= \frac{5\sqrt{2} }{\sin 30}\\\\a=\sin 45\times \frac{5\sqrt{2} }{\sin 30}\\\\a=\frac{1}{\sqrt{2} }\times \frac{5\sqrt{2} }{0.5} \\\\\\a=\frac{5}{0.5} =10\\\therefore BC = a = 10\ units$

Similarly for 'b',

$\frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}\\\frac{b}{0.9659}= \frac{5\sqrt{2} }{0.5}\\\\b=0.9659\times \frac{5\sqrt{2} }{0.5}\\\\b=\frac{6.8301}{0.5} \\\\b=13.66\\\therefore AC = b =13.66\ units\\$

Therefore,

$BC=a=10\ units\\\\AC=b=13.66\ units$

8 0

3 years ago

Can someone please help me???!!!

Assoli18 [71]

Answer:

A.)

Step-by-step explanation:

8 0

3 years ago

A publishing industry report predicts that magazine subscriptions will drop

Mrrafil [7]

Answer:

24,393 subscribers

Step-by-step explanation:

This is <u>exponential decay</u> problem. The formula for exponential decay is:

$F=P(1-r)^t$

Where

F is the future value (what we are looking for, in 7 years)

P is the present amount (that is 51,000)

r is the rate of decrease per year (r = 10% = 10/100 = 0.1)

t is the time, in years (t = 7)

Now substituting, we get:

$F=P(1-r)^t\\F=51,000(1-0.1)^7\\F=51,000(0.9)^7\\F=24,393.14$

Rounding to nearest whole number,

Number of subscribers after 7 years = 24,393 subscribers

8 0

3 years ago

The perimeter of the square is 4(x + 3.3) meters. What is the value of x if the perimeter is 28 meters?

enyata [817]

4(x+3.3)=28
/4 /4
x+3.3=7
-3.3 -3.3
x=3.7

8 0

3 years ago

Read 2 more answers

Please help and explain! *Serious answers only* 30 points :)

topjm [15]

Ok so it's a proportion so this fraction is to this fraction. the smaller rectangle has sides 4 and 12. the larger one has 8 and x. so u set it up 4/12=8/x. the 4 and 8 r both the short sides so u want those on top and 12 and x r long sides so those on bottom. since that is not an answer option u can set it up as 8/4=x/12 because u still keep the variables of the same rectangle from being multipled with each other. so answer #2 is correct

4 0

4 years ago

Read 2 more answers