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fiasKO [112]
3 years ago
12

•Plz help it’s due tomorrow, the work is abt equations•

Mathematics
2 answers:
Artemon [7]3 years ago
4 0
15 = C (y=4x-3)
16= F (y-1=2(x-3)
17= B
sertanlavr [38]3 years ago
3 0

<u>Question #15:</u>

Slope-intercept form:  y = mx + b

(m is the slope, b is the y-intercept or the y value when x = 0 --> (0, y) or the point where the line crosses through the y-axis)

You know:

m = 4

b = -3      So substitute/plug it into the equation

y = mx + b

y = (4)x + (-3)

y = 4x - 3          Your answer is C

<u>Question #16:</u>

Point-slope form:  y - y₁ = m(x - x₁)

(m is the slope, (x₁ , y₁) is the point you are given)

You know:

m = 2

(x₁ , y₁) = (3, 1)         So substitute/plug it into the equation

y - y₁ = m(x - x₁)

y - (1) = 2(x - (3))

y - 1 = 2(x - 3)           Your answer is F

<u>Questions #17:</u>

Yoga lessons cost $5 per lesson if Kylie enrolls in the health club for a fee of $120 per year. Which equation represents the yearly cost C of l yoga lessons?

C = the total cost of a year

l = the number of yoga lessons

C = 5l + 120

(the total cost of a year = $5 per lesson(l) plus a fee of $120 per year, so you pay a fee of $120 once a year)

Your answer is B

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(Trignometry, need help please.) A dog is tethered to a 14 foot leash. She travels around an arc of 49 feet. What is the radian
saul85 [17]

Element of Circle

the central angle (α) =  (the length of the arc x 360°)/2πr (r = radius)

\alpha =\dfrac{49\times 360^o}{2\pi\times 14}=200.64^o

convert to rad:

\tt 1^o=\dfrac{\pi}{180^o}rad\\\\200^o=\dfrac{200^o\pi}{180^0}rad=\boxed{\bold{3.48~rad}}

6 0
2 years ago
Instructions: Select the correct answer from the drop-down menu.
True [87]
Remember
(x^m)/(x^n)=x^(m-n)

7^16/6^12=7^(16-12)=6=7^4

so

7^4=7^-18/?
?=7^?

7^4=7^-18/7^?
7^-18/7^?=7^(-18-?)=7^4
-18-?=4
add 18
-?=22
tmes -1
?=-22
7^-22

answer is C
3 0
3 years ago
Read 2 more answers
The equation p= 2.5m + 35 represents the price p of a bracelet, where m is the cost of the materials. The price of a bracelet is
Klio2033 [76]
P= 2.5m + 35    (replace p with 115)
115= 2.5m + 35  (subract 35 from each side)
115 - 35 = 2.5m
80 = 2.5m    (divide 2.5 from each side)
80/2.5= 2.5m/2.5
32 = m

The price of the materials is $32

3 0
3 years ago
16.3<br> Find the equivalent mixed number
KengaRu [80]

Answer:

16.3 = 16 \frac{3}{10}

Step-by-step explanation:

0.1 is equivalent to 1/10 or one tenth so 0.3 = 3/10

4 0
3 years ago
Y = -3x - 2 and 5x + 2y = 15
denis-greek [22]

Answer:

(-19, 55)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = -3x - 2

5x + 2y = 15

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                     5x + 2(-3x - 2) = 15
  2. Distribute 2:                          5x - 6x - 4 = 15
  3. Combine like terms:            -x - 4 = 15
  4. Isolate <em>x</em> term:                      -x = 19
  5. Isolate <em>x</em>:                               x = -19

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define original equation:                    y = -3x - 2
  2. Substitute in <em>x</em>:                                     y = -3(-19) - 2
  3. Multiply:                                                y = 57 - 2
  4. Subtract:                                               y = 55
8 0
3 years ago
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