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3 years ago

PLEASE HELP DUE IN 5 MINS

Mathematics

1 answer:

Stolb23 [73]3 years ago

3 0

Answer: When your walk or run

Step-by-step explanation: When you walk or run, you take steps and those steps calculate to feet yards mabe even miles.... This was very ez

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A baseball is thrown up in the air from a height of 3 feet with an initial velocity of 23 feet per second. When does the basebal

ExtremeBDS [4]

Answer:

Step-by-step explanation:

This is information that is modeled by a parabolic equation. The leading coefficient is -16t^2 because we are in feet as opposed to meters (which would be -4.9t^2). The standard form of this parabolic motion is

$s(t)=-16t^2+v_{0}t+h_{0}$

where s(t) is the height of the baseball after a certain amount of time has gone by, v0 is the initial vertical velocity, and h0 is the initial height. Filling in what we have:

$s(t)=-16t^2+23t+3$

We are asked when the ball hits the ground. If s(t) is our position after a certain time has gone by, and the height of the ball on the ground is no height at all (or 0), then replace s(t) with 0 and factor to solve for t.

Throw that into the quadratic formula or however you like to factor second degree polynomials, and get that the 2 solutions are that

t = -.12 seconds and that t = 1.56 seconds. We all know that time will NEVER be negative, so the time we want is 1.56 seconds, choice C.

8 0

3 years ago

The cost of 300 metres optic fibre is $200 what will be the cost if 1 metre of optic fibre.

Elden [556K]

The answer is: " $0.67 / metre " ;
or, write as: " [ $\frac{2}{3}$ dollar] per metre."
____________________

Step-by-step explanation:

This is a unit rate problem:
Find the cost in dollars per [single unit—in this case: "metre(s)", "m" ;
_________________
$\frac{200 dollars}{300m} = \frac{? dollars}{1m}$ ; Solve for the "?" amount of dollars.
_________________
Method 1) "Cross-factor multiply" :
Note: Given: " $\frac{a}{b} = \frac{c}{d} ; [b\neq 0; d\neq 0]$ " ;

then: ⟷ " $ad = bc$ " ;
_________________

So: " \frac{200 dollars}{300m} = \frac{? dollars}{1m} " ;

then: ⟷ " (200*1) = (300* ?) ;

→ " (200) = (300 * ?)" ;

↔ " (300 * ?) = 200 " ;

Let "x" refer to the "?" ; the "unknown value" (in dollars);

for which we are trying to solve.

⇒ " 300x = 200 " ; Solve for "x" ;
→ Divide each side of the equation by: "300" ;

to isolate "x" on the "left-hand side" of the equation; & to solve for "x" ;
⇒ 300x/ 300 = 200/300 ;

To get: " x = $\frac{2}{3}$ dollars" ;

= $0.666666666... ;

round to: $0.67 .

{since: " 1 dollar = $1.00 = 100 cents" ;
and since: "\frac{2}{3} " ;

= ["2 ÷ 3" = 0.666666...." ] ;

⇒ round to: "0.67 " ;

and write as:
__________

⇒ $0.67 / metre ; or, write as:
" [ $\frac{2}{3}$ dollar] per metre."
_________

Method 2) Note:
\frac{200 dollars}{300m} = \frac{? dollars}{1m} ;

⇔ = " $\frac{200}{300}$ $\frac{dollars}{metre}$ " ;
{Note: "[200÷300]" can be simplified by "canceling out" the two (2) zeros in both the numerator and the denominator.}.

= " \frac{2 dollars}{3m} ";
_________

= i.e. " $\frac{\frac{2}{3} dollars}{metre}$ " or; $\frac{0.67 dollars} {m}$ ; or: $0.67 / metre .

⇒ {since: " $\frac{2}{3}$ of 1 dollar" = " \frac{2}{3} dollars of 100 cents" ;
⇒ {since: "1 dollar = 100 cents"} ;

⇒ {and: " $\frac{2}{3}$ " = 0.6666666666666... " } ;

→ round to: "0.67 " ; and thus: $0.67 / metre.
_________
Note that using either of these 2 (two) methods result in the same answer.
Hope this is helpful! Best wishes to you within your academic pursuits!
_________________

7 0

3 years ago

The price of a new gaming PC was increased from $280 to $364. By what percentage was the price of the gaming PC increased?

PSYCHO15rus [73]

Answer:

30%

but its correct

3 0

3 years ago

2.5.2 project performance task:trade show booth

Artyom0805 [142]

The booth space and the product brochures are less than $3000 hence the equation of inequality will be B + P ≤ $ 3000.

<h3>What is inequality?</h3>

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

Let the booth space be B and the product brochures be P.

Then the equation of inequality will be

B + P ≤ $ 3000

Learn more about inequality on:

brainly.com/question/11613554

#SPJ1

Complete question:

2.5.2 Project: A Trade Show Booth

The Scenario: Your manager has asked you to help plan your company's participation at a local trade show. You have $3000 to spend on the booth space and product brochures. Use what you know about solving inequalities to prepare the inequality that meets the budget.

6 0

2 years ago

I give brainliest

xxMikexx [17]

Functions are accurate through having one x intercepts which is how you can find which are functions or not.
Answer- B,D,E

4 0

3 years ago