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2 years ago

Help me please. Plz.

Mathematics

2 answers:

Lubov Fominskaja [6]2 years ago

7 0

It’s 3673 because yea

lions [1.4K]2 years ago

4 0

Answer:

110

Step-by-step explanation:

Since the whole thing should equal 360 degrees and the sides are the same length in twos then add 100 + 40 and then do 360 - 140 then divide by two fpr the missing two angles so each are 110 degrees.

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I need to solve the equation please help me

lesantik [10]

Answer:

$\displaystyle x=\Big\{\frac{7\pi}{6}+2n\pi, \frac{3\pi}{2}+2n\pi, \frac{11\pi}{6}+2n\pi}\Big\}, n\in\mathbb{Z}$

Step-by-step explanation:

We are given the equation:

$4\sin^2(x)+6\sin(x)+2=0$

First, we can divide everything by 2:

$2\sin^2(x)+3\sin(x)+1=0$

Notice that we have an equation in quadratic form. Namely, if we make a substitution where u = sin(x), we acquire:

$2u^2+3u+1=0$

Solve for u. Factor:

$(2u+1)(u+1)=0$

Zero Product Property:

$2u+1=0\text{ or } u+1=0$

Solving for both cases:

$\displaystyle u=-\frac{1}{2}\text{ or } u=-1$

And by substitution:

$\displaystyle \sin(x)=-\frac{1}{2}\text{ or } \sin(x)=-1$

For the first case, recall that sin(x) is -1/2 for every 7π/6 and every 11π/6. Hence, for the first case, our solutions are:

$\displaystyle x=\frac{7\pi}{6}+2n\pi \text{ and } x=\frac{11\pi}{6}+2n\pi, n\in\mathbb{Z}$

Where n is an integer.

For the second case, sin(x) is -1 for every 3π/2. Thus:

$\displaystyle x=\frac{3\pi}{2}+2n\pi$

All together, our solutions are:

$\displaystyle x=\Big\{\frac{7\pi}{6}+2n\pi, \frac{3\pi}{2}+2n\pi, \frac{11\pi}{6}+2n\pi}\Big\}, n\in\mathbb{Z}$

4 0

3 years ago

I only need the odd numbers answered

sveticcg [70]

Answer:

1.a+4=11

a=7

2.6=g+8

g=2

4.k+8=3

k=-5

5.j+0=9

j=9

6.12+y=15

y=3

7.h-4=0

h=4

8.m-7=1

m=8

9.w+5=4

w=-2

10.b-28=33

b=61

11.45+f=48

f=3

12.n+7.1=8.6

n=1.5

Hope This Helps!!!

8 0

3 years ago

What is the relationship between the base angles of an isosceles triangle?

Mashutka [201]

If the 2 base angles are congruent then the two opposite sides are congruent

4 0

2 years ago

Will mark as brainliest if correct

sergeinik [125]

Answer:

A, B and F.

Step-by-step explanation:

The bill total + 20% of the bill total must be less than or equal to $60.

So we have the inequality:

x + 0.20x ≤ 60

1.20x ≤ 60

x ≤ 60/1.20

x ≤ 50 dollars.

6 0

3 years ago

A 5 gallon bucket of paint for 97.45 of a 1 gallon bucket of paint for 21.95

dalvyx [7]

Answer:

The five gallons is cheaper since 97.45 divided by 5 is equal to 19.49.

Step-by-step explanation:

8 0

3 years ago