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denpristay [2]
3 years ago
9

Consider the quadratic function f(x) = –2x2 5x – 4. the leading coefficient of the function is?

Mathematics
2 answers:
puteri [66]3 years ago
8 0
The leading co-efficient of ax^2+bx+c is 'a'

so, for
<span>–2x^2+ 5x – 4</span>
it will be -2
evablogger [386]3 years ago
3 0

Answer:

\text{-2 is the leading coefficient of the quadratic equation }f(x)=-2x^2+5x-4

Step-by-step explanation:

Given the quadratic function

f(x)=-2x^2+5x-4

we have to find the leading coefficient of given quadratic equation.

\text{The general form of quadratic equation is }ax^2+bx+c=0

The coefficient of x^2 i.e a is known as the leading coefficient.

Comparing given equation with the standard equation, we get

a=-2

\text{Hence, -2 is the leading coefficient of the quadratic equation }f(x)=-2x^2+5x-4

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A scientist has two kinds of solutions. The first solution is Solution A, which is an $80\%$ acid solution. The second solution
devlian [24]

Answer:

Step-by-step explanation:

a ) Let the volume required be v .

v x .8 + 500 x .3 / ( v + 500 ) = .7

.8 v + 150 = .7 v + 350

.1 v = 200

v = 2000 mL

b )

Let the volume of solution A  required be v . The volume of solution of B required will be 100 - v

v x .8 + ( 100 - v ) x .3 / 100 = .5

.8 v + 30 - .3 v = 50

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v = 40 mL

volume of solution B = 60 mL .

c )

It is not possible because 90 % is more than 80 % the concentration of solution A . Any mixture will have concentration less than 80 % .

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7 0
3 years ago
Multiplication property of equality: If AB = CD, then 5 • AB =
Romashka [77]

Answer:

If AB = CD then 5 • AB = 5 • CD

Step-by-step explanation:

The multiplication properly of equality states that if two items have the same value, then you could swap them out and the equation would stay the same.

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3 years ago
William got $150 for making all A’s on his report card. He wants to spend it on CDs and DVDs. The local video store is having a
olga55 [171]
What are the options?

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Calvin wants to know the proportion of students at his school who plan to
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What is the solution of the system? Use either the substitution method or the elimination method. 4x + 2y = 104x + 2y = 10 x − y
bixtya [17]
4x+2y=10 Equation 1
x-y=13 Equation 2
Solving by substitution method.
Isolate x from equation 2.
x=y+13
Substitute value of x in equation 1
4(y+13)+2y=10
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8 0
3 years ago
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