I need to find cos^-1 (1/2)

Answer:

[tex]-\frac{8}{5} = -1\frac{3}{5}[/tex]

Step-by-step explanation:

[tex]1 \frac{4}{5} = \frac{9}{5}[/tex]

[tex]-3 \frac{4}{10} = -\frac{34}{10} = -\frac{17}{5}[/tex]

Multiply the whole number by the denominator and add that to the numerator. I simplified [tex]-\frac{34}{10}[/tex] by dividing by two getting [tex]-\frac{17}{5}[/tex]. Then add [tex]\frac{9}{5}[/tex] and [tex]-\frac{17}{5}[/tex] together. Then put [tex]-\frac{8}{5}[/tex] into a mixed fraction. How many times does 5 go into 8 and what is the remainder? The answer is -1 times and the remainder is 3. The mixed fraction is [tex]-1 \frac{3}{5}[/tex].

The expression 1 4/10 + (-3 4/10 gives the value -1 3/5.

Mixed fractions are type of fractions which consist of a whole number part and a fractional part.

Mixed fractions are of the form a b/c where a is the whole number part and b/c is the fractional part.

Given expression is,

1 4/5 + (-3 4/10)

Since a positive and negative combined, it becomes negative.

Also mixed fractions can be converted into improper fractions.

1 4/5 + (-3 4/10) = 1 4/5 - 3 4/10

                         = [(1 × 5 + 4) / 5] - [(3 × 10 + 4) / 10]

                         = (9 / 5) - (34 / 10)

Making the denominator of first fraction equal by multiplying with 2 on both numerator and denominator,

1 4/5 + (-3 4/10) = [(9 × 2) / (5 × 2)] - [34 / 10]

                         = (18 / 10) - (34 / 10)

                         = -16 / 10

                         = -1 6/10

                         = -1 3/5

Hence the value of the expression is -1 3/5.

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Answer:

Brainly isn't for answer keys... It's to help you understand how to do something better or just how to do it in general.

Step-by-step explanation:

Answer:

14 2/5

Step-by-step explanation:

Answer:

The answer should be G

Step-by-step explanation:

Hope this helps.

Have a great day

Answer:

(10, -18)

Step-by-step explanation:

midpoint formula: (sum of both x-values/2, sum of both y-values/2)

(0 + x)/2 = 5

x = 10

(4 + y)/2 = -7

y = -18

Answer:

AB = [tex]5\sqrt{3}[/tex]  cm

Step-by-step explanation:

The diagonal of the bottom square is the hypotenuse of two right triangles with legs 5 and 5

So, the length of that diagonal, say x,  of a 45-45-90 triangle where x is the hypotenuse is x = [tex]5\sqrt{2}[/tex]

Now that diagonal is a leg of the right triangle where AB is the hypotenuse and 5 is the length of the other leg.

So, [tex]x^{2} + 5^{2} = AB^{2}[/tex]  =  [tex](5\sqrt{2} )^{2}[/tex] + 25

                                =  50 + 25

                               = 75

Therefore   AB = [tex]\sqrt{75}[/tex] = [tex]5\sqrt{3}[/tex]

Answer:

3.36

Step-by-step explanation:

3+12%=3.36

Answer:

35.0169°

Step-by-step explanation:

35.0169°

I hope this helps you!!

Answer:

72 ft. 6ft x8ft +24=72 ft

Answer: Can you translate for me? I don't know spanish.

Step-by-step explanation:

:)

The value of the expression is 17.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

r + 4

When r = 13

r + 4

= 13 + 4

= 17

Thus,

The value is 17.

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Answer:

hdjdndjbzsbshsbs sbsbsbs

Answer:

b. f(3.5) = 52

Hope this helps!

Answer:

C(x) = 12x + 1680

Slope = 12

Intercept = 1680

Step-by-step explanation:

Given that:

X1 = 60 chairs ; y1 = 2400

X2 = 260 chairs ; y2 = 4800

Obtain the slope ; m

m = y2 - y1 / x2 - x1

m = 4800 - 2400 / 260 - 60

m = 2400 / 200

m = 12

Using the point slope relation:

y - y1 = m(x - x1)

y - 2400 = 12(x - 60)

y - 2400 = 12x - 720

y = 12x - 720 + 2400

y = 12x + 1680

C(x) = 12x + 1680

From the general slope intercept equation :

y = mx + c

m = slope ; c = intercept

Hence,

C(x) = 12x + 1680

Slope = 12

Intercept = 1680

Answer:

Andre can make 6 small paper cranes in 30 minutes.

Step-by-step explanation:

Answer:

d.

Step-by-step explanation:

Answer:

2 points per minute is a required answer

the answer is -4 and 3

hope that helped

Answer:

B

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

2 + 5 = 7

Answer:

2/3

Step-by-step explanation:

8/9 x 3/4 = 2/3 x 1/1 = 2/3

Answer: 7

Step-by-step explanation:

3a + 4 = 21

Step 1 subtract 4 from both sides.

3a+4−4=25−4

3a = 21

Step 2: Divide both sides by 3.

3a / 3 = 1

21 / 3 = 7

a = 7

Answer:

$31.50

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 1.5%/100 = 0.015 per year,

then, solving our equation

I = 700 × 0.015 × 3 = 31.5

I = $ 31.50

The simple interest accumulated

on a principal of $ 700.00

at a rate of 1.5% per year

for 3 years is $ 31.50.

Answer:

54

Step-by-step explanation:

Answer:

− 3 − 9 n

Step-by-step explanation:

Simplify the expression

Answer: 10,000 x 0.05 = $500

0.05 is equal to 5%

$500

Please brainlyist

Answer:

1) A- 95

2) B-  125

Step-by-step explanation:

1) 50 + 35+x = 180

85 +x = 180

x = 180- 85

 = 95

2) 70 +80 + 85+d = 360

235 + d = 360

d = 360 - 235 = 125

I Hope im right!

Answer:

15

Step-by-step explanation:

75/5=15

Answer: 15 dollars in each pile.

Step-by-step explanation:

Since there is 75 in total, and we have to divide the 75 equally between the 5 piles, we can use the division equation: 75 / 5.

75 / 5 = 15.

Therefore, there will be 15 dollars in each pile. Hope this helps and good luck!

Answer:

Mr. Rich did 80% and the student did 20%

Step-by-step explanation:

60/75 = 80%

15/75 = 20%