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2 years ago

Round the answer to the nearest

Mathematics

1 answer:

kykrilka [37]2 years ago

4 0

By knowing the <em>blood</em> pressure and applying the <em>quadratic</em> formula, the age of a man whose normal <em>blood</em> pressure is 129 mm Hg is 40 years old.

<h3>How to use quadratic equations to determine the age of a man in terms of blood pressure</h3>

In this problem we have a <em>quadratic</em> function that models the <em>blood</em> pressure as a function of age. As the latter is known, we must use the quadratic formula to determine the former:

129 = 0.006 · A² - 0.02 ·A + 120

0.006 · A² - 0.02 · A - 9 = 0

$A = \frac{0.02 \pm \sqrt{0.006^{2}-4\cdot (0.006)\cdot (- 9)}}{2\cdot (0.006)}$

A = 1.667 + 38.733

A = 40

By knowing the <em>blood</em> pressure and applying the <em>quadratic</em> formula, the age of a man whose normal <em>blood</em> pressure is 129 mm Hg is 40 years old.

To learn more on quadratic equations: brainly.com/question/1863222

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Let f(x) = 3x + 2 and g(x) =7x + 6. Find f ·g and its domain.

Kitty [74]

Answer:

The answer is the option D

$21x^{2}+32x+12$ ; All real numbers

Step-by-step explanation:

we have

$f(x) = 3x + 2$

$g(x) =7x + 6$

Calculate f(x)*g(x)

$(3x + 2)*(7x+6)$

Multiply applying the distributive property

$(3x + 2)*(7x+6)=3x*7x+3x*6+2*7x+2*6\\=21x^{2}+18x+14x+12\\=21x^{2}+32x+12$

The domain of the function is the interval------> (-∞,∞)

All real numbers

5 0

3 years ago

Read 2 more answers

A group of friends wants to go to the amusement park. They have no more than $65 to spend on parking and admission. Parking is $

Aloiza [94]

Considering the definition of an inequality, the number of people who can go to the amusement park is 3.

<h3>Definition of inequality</h3>

An inequality is the existing inequality between two algebraic expressions, connected through the signs:

greater than >.
less than <.
less than or equal to ≤.
greater than or equal to ≥.

An inequality contains one or more unknown values called unknowns, in addition to certain known data.

Solving an inequality consists of finding all the values of the unknown for which the inequality relation holds.

<h3>Number of people who can go to the amusement park</h3>

In this case, you know that:

A group of friends has no more than $65 to spend on parking and admission.
Parking is $9.75, and tickets cost $16.25 per person, including tax.

Being "p" the number of people who can go to the amusement park, the inequality that expresses the previous relationship is

$9.75 + $16.25×p ≤$65

Solving:

$16.25×p ≤$65 - $9.75

$16.25×p ≤$55.25

p ≤$55.25÷ $16.25

Finally, the number of people who can go to the amusement park is 3.

Learn more about inequality:

brainly.com/question/17578702

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4 0

2 years ago

Which expression can be used to convert AU$22 in the US dollars

miv72 [106K]

0.71 x 22 is the expression that works, because 1 AUD = 0.71USD.

5 0

3 years ago

PLEASE HELP IM CONFUSED! Find what the measurements of angles a-c are and state the reason

nata0808 [166]

Answer:

<a = 90° (180-90 supplementary angle)

<b = 90° (180-90 supplementary angle)

<d = 48° (180-132 supplementary angle)

<e = 132° (opposite angle)

<c = 42° (interior angles of a triangle equal 180. 180-48-90=42)

Step-by-step explanation:

<a = 90° (180-90 supplementary angle)

<b = 90° (180-90 supplementary angle)

<d = 48° (180-132 supplementary angle)

<e = 132° (opposite angle)

<c = 42° (interior angles of a triangle equal 180. 180-48-90=42)

8 0

3 years ago

At the beach, Nardia collected triple the number of seashells that Pierre did. Together, they collected 52 seashells. Which equa

MrRa [10]

Answer:

13 seashells

Step-by-step explanation:

p=number of seashells pierre collected

p+3p=52

4p=52

p=13

13 seashells

7 0

3 years ago

Read 2 more answers