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3 years ago

2. Next she needs to find her maximum heart rate m by subtracting her age a from 220. Write an

Mathematics

1 answer:

Travka [436]3 years ago

7 0

Answer:

220 - a = m

Step-by-step explanation:

a is her age

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if the equation y=-4x+b represents the line that passes throught the point (1,4) determine the value of the y-intercept

kvv77 [185]

Answer:

y-intercept (0, 8)

Step-by-step explanation:

Plug in (1,4) --> (x,y) and solve for b (y-intercept):

y = -4x + b

4 = -4(1) + b

4 = -4 + b

b = 8

Therefore the y-intercept is (0, 8)

5 0

3 years ago

Two or more equations that have the same solution set called ________ equations

masya89 [10]

Equivalent system, equivalent systema of equations

7 0

3 years ago

Read 2 more answers

Can anybody help me please

GREYUIT [131]

Question 7: Option 1: x = 33.5°

Question 8: Option 3: x = 14.0°

Step-by-step explanation:

<u>Question 7:</u>

In the given figure, the value of perpendicular and hypotenuse is given, so we have to use any trigonometric ratio to find the value of angle as the given triangle is a right-angled triangle

So,

Perpendicular = P = 32

Hypotenuse = H = 58

So,

$sin\ x = \frac{P}{H}\\sin\ x = \frac{32}{58}\\sin\ x = 0.5517\\x = sin^{-1} ( 0.5517)\\x =33.48$

Rounding off to nearest tenth

x = 33.5°

<u>Question 8:</u>

In the given figure, the value of Base and Perpendicular is given, we will use tangent trigonometric ratio to find the value of x

So,

Perpendicular = P = 5

Base = B = 20

So,

$tan\ x = \frac{P}{B}\\tan\ x = \frac{5}{20}\\tan\ x = 0.25\\x = tan^{-1} (0.25)\\x = 14.036$

Rounding off to nearest tenth

x = 14.0°

Keywords: Right-angled triangle, trigonometric ratios

Learn more about trigonometric ratios at:

#LearnwithBrainly

8 0

3 years ago

What is the difference of the polynomials? (Ă˘â‚¬""2x3y2 4x2y3 Ă˘â‚¬"" 3xy4) Ă˘â‚¬"" (6x4y Ă˘â‚¬"" 5x2y3 Ă˘â‚¬"" y5) Ă˘â‚¬""6x4y

zlopas [31]

Polynomial-An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable. The difference between the given polynomials is

$=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

Given-

We have given two function of variable <em>x </em>and <em>y</em>

$(-2x^3y^2 + 4x^2y^3-3xy^4)$

$(6x^4y-5x^2y^3-y^5)$

<h3>Polynomial</h3>

An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable.

Now we have to subtract the two equations to find the difference,

$(-2x^3y^2 + 4x^2y^3-3xy^4)-(6x^4y-5x^2y^3-y^5)$

Multiply the sign into the bracket to open the bracket and further solution,

$=-2x^3y^2 + 4x^2y^3-3xy^4-6x^4y+5x^2y^3+y^5$

Arrange the similar terms in the same groups,

$=-2x^3y^2 + (4x^2y^3+5x^2y)-3xy^4-6x^4y+y^5$ $=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

Hence, the difference between the given polynomials is $=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5$

For more about the polynomials, follow the link below-brainly.com/question/17822016

5 0

3 years ago

Y=-3x-4 which ordered pair is a solution

notka56 [123]

Answer:

(-3,4)

mark me brainliest!

4 0

4 years ago