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3 years ago

Help!!Will give brainliest!Plz explain how to do this if possible.

Mathematics

2 answers:

Law Incorporation [45]3 years ago

8 0

Answer:

a = 15/4

Step-by-step explanation:

First we need to solve for x

sin 30 = opposite/ hypotenuse

sin 30 = x/15

15 sin 30 = x

15 (1/2) =x

15/2 =x

Then we can use

cos 60 = adjacent/ hypotenuse

cos 60 = a/x

Multiply by x

x cos 60 =a

15/2 (1/2) =a

15/4

Dima020 [189]3 years ago

4 0

Answer: a=3.74

Step-by-step explanation:

first use 15 to solve for x and z. x=7.5 and z=12.99 or 13. Once you know x you can use that to solve for y and a. y=6.5 and x=7.5 and using pythagorean theorem you will find that a= the square root of 14 or 3.74.

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There are three pies, one person eats one sixths one half and three sixths.Another person eats four sixth three sixth and one th

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The second person ate the most and the amount of pie left over from the three pies is 5/6 pie

6 0

3 years ago

7x + 10 - 18 + 2x = 55

Serga [27]

Answer:

Step-by-step explanation:

add the like terms,

9x - 8 = 55

9x = 63

x = 63 ÷ 9

x = 7

5 0

3 years ago

1.What is the slope of (0,2) and (-8,-8). What is the slope of (-8,-5) and (8,15)

ss7ja [257]

Answer:

Slope of (0,2) and (-8,-8): 5/4

Slope of (-8,-5) and (8,15): 5/4

Both slopes are 5/4

m = 5/4

Step-by-step explanation:

To find the slope:

1. Use the formula $m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ .

2. Assign point 1 and point 2

3. State (x₁ , y₁) and (x₂, y₂)

4. Substitute x₁ , y₁, x₂, and y₂ into the formula

5. Solve

Slope of (0,2) and (-8,-8):

Point 1: (0,2) x₁ = 0 y₁ = 2

Point 2: (-8,-8) x₂ = -8 y₂ = -8

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ Formula for slope

$m = \frac{-8-2}{-8-0}$ Substituted points

$m = \frac{-10}{-8}$ Simplified the subtraction then the negatives

$m = \frac{10}{8}$ Reduce fraction by dividing top and bottom by 2

$m = \frac{5}{4}$ First slope

Slope of (-8,-5) and (8,15):

Point 1: (-8,-5) x₁ = -8 y₁ = -5

Point 2: (8,15) x₂ = 8 y₂ = 15

$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ Formula for slope

$m = \frac{15-(-5)}{8-(-8)}$ Substituted points

$m = \frac{15+5}{8+8}$ Simplified the subtraction into addition

$m = \frac{20}{16}$ Reduce fraction (divide top and bottom by 4)

$m = \frac{5}{4}$ Second slope

3 0

3 years ago

Work out the answers to:

timofeeve [1]

Answer:

a) 50

b) 400

c) 8

d) 200

Step-by-step explanation:

a) 5 divided 0.1

$\frac{5}{0.1} = \frac{5 \times 10}{0.1 \times 10} = \frac{50}{1} = 50$

b) 8 divided 0.02

$\frac{8}{0.02} = \frac{8 \times 100}{0.02 \times 100} = \frac{800}{2} = 400$

c) 2.4 divided 0.3

$\frac{2.4}{0.3} = \frac{2.4 \times 10}{0.3 \times 10} = \frac{24}{3} = 8$

d) 32 divided 0.16

$\frac{32}{0.16} = \frac{32 \times 100}{0.16 \times 100} = \frac{32 \times 100}{16} = 200$

7 0

3 years ago

Read 2 more answers

a rectangular ponds refectuons in a part is 16 feet long. The maintenance crew placed a string of flags 20 feet long across the

frosja888 [35]

Answer:

width = 12 ft

Step-by-step explanation:

Given the figure of the pond and the fact that the corners form a right triangle that is across from the string of flags, you can use the Pythagorean Theorem to solve for the width of the triangle that is formed by the flags:

a² + b² = c², where 'a' and 'b' represent the legs of the triangle and 'c' represents the diagonal or hypotenuse. Using 16 for 'a' and 20 for 'c':

16² + b² = 20²

256 + b² = 400

Subtract 256 from both sides: 256 - 256 + b² = 400 - 256 or b² = 144

Take the square root of both sides: √b² = √144 or b = 12 ft

6 0

4 years ago