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4 years ago

Pls help meeee thank you

Mathematics

2 answers:

Helen [10]4 years ago

6 0

Answer:

7/12

Step-by-step explanation:

add up all of the buttons

30+40+50=120

add up all of the blue and red buttons

30+40=70

then divide the added values

70/120

simplify

7/12

marishachu [46]4 years ago

4 0

Answer:

7/12

Step-by-step explanation:

It will be seven 7 by 12

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Help I am very bad at math I need answers by tomorrow if you can help please do

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

(a - b)(a +b) = a² - b²

1 - Sin² A = Cos² A

$LHS = \frac{1}{1- Sin A} + \frac{1}{1 + Sin A}\\\\= \frac{1*(1 + Sin A)}{(1- Sin A)(1 + Sin A)} + \frac{1*(1- Sin A)}{(1 + Sin A)(1- Sin A)}\\\\= \frac{1 + Sin A+ 1 - Sin A}{1^{2}- Sin^{2} A}\\\\= \frac{2}{1 - Sin^{2} A}\\\\= \frac{2}{Cos^{2} A}\\\\= 2 Sec^{2} A$

2) Sec² A - Tan² A = 1

$LHS = \frac{1}{Sec A - Tan A}\\\\=\frac{1*(Sec A + Tan A)}{(Sec A - Tan A)(Sec A + Tan A)}\\\\=\frac{Sec A + Tan A}{Sec^{2} A - Tan^{2} A}\\\\=\frac{Sec A + Tan A }{1}\\\\= Sec A + Tan A = RHS\\\\\\$

3) LHS = Cosec² A + Cot² A

= Cosec² A + Cosec² A - 1

= 2Cosec² A - 1 = RHS

$4) LHS = \frac{Sec A}{Cos A}- \frac{Tan A}{Cot A}\\\\ = Sec A*\frac{1}{Cos A}-Tan A*\frac{1}{Cot A}\\\\ = Sec A * Sec A - Tan A * Tan A\\\\= Sec^{2} A - Tan^{2} A \\\\= 1$

3 0

3 years ago

Which values are solutions of the inequality 6 x + 4 < 22 ? Select two answers.

zubka84 [21]

Answer: D and E

Step-by-step explanation:

To find this answer we want to get x by itself in the equation.

6x + 4 < 22

6x < 18

x < 3

So according to this the value of x has to be less than 3.

You can check your answer by substituting the values in for x.

6(0) + 4 < 22

4 < 22 is True

6(2) + 4 < 22

16 < 22 is True

6(3) + 4 < 22

22 < 22 False!

8 0

3 years ago

Solve 3^(x+1) = 15 for x using the change of base formula log base b of y equals log y over log b.

Mazyrski [523]

Answer:

Step-by-step explanation:

To solve this , first we convert the exponential form in to log form

becomes

now we apply change of base formula to remove base 3

like that log_3(15) becomes

2.46497=x+1

subtract 1 from both sides

x= 1.46497

Step-by-step explanation:

8 0

4 years ago

44.4153 rounded to nearest degree

Lubov Fominskaja [6]

Answer:

44º

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A tree of unknown height casts a shadow that is 18 feet long. If a person that is 5 ft 7 in casts a shadow that is 4 ft long, th

brilliants [131]

Answer:

25.

Step-by-step explanation:

5 ft 7 in = 5.583 ft.

We have 2 similar triangles here.

If h is the height of the tree, then:

h / 5.583 = 18/4

h = 18*5.583/4

h = 25.12 ft

5 0

3 years ago