2 years ago

The sum of 3 rational numbers is 90 determine these 3 numbers

Mathematics

2 answers:

MAXImum [283]2 years ago

7 0

3x+3=90

3x=90-3

3x=87

x= 29

three no are 29 ,30 ,31

harina [27]2 years ago

5 0

Answer:

Step-by-step explanation:

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a company earns a weekly profit of p dollars by selling x items, according to the equation p(x)=-0.5x^2+40x-300 how many items d

Archy [21]

Legit way is vertex form

easy way is this
x value of vertex in form
f(x)=ax^2+bx+c is -b/2a
the y value is f(x value of vertex)

so

p(x)=-0.5x^2+40x-300
x value of vertex is -40/(2*-0.5)=-40/-1=40

max profit selling 40 per week
profit would be 500

3 0

3 years ago

Read 2 more answers

In the figure below ABC = MPN find m P

yaroslaw [1]

Answer:

m∡P = 80°

Step-by-step explanation:

Because ABC = MPN, m∡B = m∡P. Therefore, m∡P = 80°.

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3 years ago

Jenny orders a meal at a restaurant that costs $21.62 before sales tax and tip. A sales tax of 9% was added. Jenny wants to leav

jeka94

Meal cost $ 21.62
plus 9% tax = $21.62 * 1.09 = $ 23.57
meal & tax = $ 23.57 plus17% tip = $ 23.57 * 1.17 = $ 27.58
Total cost $ 27.58

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3 years ago

Which one should I choose

Jet001 [13]

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3 years ago

The midpoint of the line segment from upper p 1p1 to upper p 2p2 is left parenthesis negative 1 comma 5 right parenthesis(−1,5).

aliya0001 [1]

The coordinates of the second point are (2, 4).

The midpoint formula is:
$m=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Substituting our information, we have:

$(-1, 5)=(\frac{-4+x_2}{2},\frac{6+y_2}{2})$

This means that
$-1=\frac{-4+x_2}{2} \text{ and } 5=\frac{6+y_2}{2}$

Multiply both sides of both equations by 2 to cancel it:
$-1\times2=(\frac{-4+x_2}{2})\times2 \text { and } 5\times2=(\frac{6+y_2}{2})\times2
\\
\\-2=-4+x_2 \text { and } 10=6+y_2
\\-2+4=-4+x_2+4 \text { and } 10-6=6+y_2-6
\\2=x_2 \text{ and } 4=y_2$

This gives us our coordinates (2, 4)

3 0

3 years ago