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2 years ago

A second form of a quadratic equation is.....

Mathematics

1 answer:

k0ka [10]2 years ago

5 0

Ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable.

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Haruka owns an umbrella factory. The revenue, RRR, she makes from selling nnn umbrellas is given by the function R(n)=18nR(n)=18

Levart [38]

Answer:

E(n) = n + 5

Explanation:

The profit is the difference between the amount of money received as a revenue and the amount of money spent as expenses.

This means that:

Profit = Revenue - Expenses

Rearrange the formula to solve for the expenses, we get:

Expenses = Revenue - Profit

We are given that:

Revenue = R(n) = 18n

Profit = P(n) = 17n - 5

Substitute in the above formula to get the formula for expenses as follows:

E(n) = R(n) - P(n)

E(n) = 18n - (17n-5)

E(n) = 18n - 17n + 5

E(n) = n + 5

Hope this helps :)

5 0

2 years ago

Ruben has decided that all even number are composite since they can all be dovided by 2.Is Ruben correct?explain

IRISSAK [1]

Yes. All even numbers are divisible by 2. Every single one of them

5 0

2 years ago

The Converse of the Pythagorean says that if a²+b²=c²the triangle is a right triangle. Use the Converse of the Pythagorean Theor

mina [271]

A is the answer to your question

5 0

2 years ago

Read 2 more answers

PLEASE HELP HURRY!!!!!!!

Charra [1.4K]

As it has been given that $x=4+5i$ , $y=2-9i$ .

We need to find the value of the following:

(i) $4x-y$ , substituting the value of 'x' and 'y' in the expression, we get:

$4(4+5i)-(2-9i)=4\times 4+4\times 5i-2+9i=16+20i-2+9i$

$=14+29i$

So, $4x-y=14+29i$

(ii) $-x+3y$ , substituting the value of 'x' and 'y' in the expression, we get:

$-(4+5i)+3(2-9i)=-4-5i+3\times 2-3 \times 9i=-4-5i+6-27i$

$=2-32i$

So, $-x+3y=2-32i$

(iii) $x \times y$ , we need to substitute the value of 'x' and 'y' in the expression, for this, we can use distributive property of multiplication that says,

$a(b+c)=a \times b+ a \times c$

Using the distributive property of multiplication:

$(4+5i)\times(2-9i)=4 \times 2-4 \times 9i+5i \times 2-5i \times 9i$

$=8-36i+10i-45i^2$

Now, we know that $i \times i=i^2=-1$

We get, $8-36i+10i-45 \times (-1)=8-26i+45$

$=8+45-26i=53-26i$

Therefore, $x \times y$ = $53-26i$ .

(iv) We have, $2x \times y$ , we need to substitute the value of 'x' and 'y' in the expression, we get:

$2(4+5i)\times (2-9i)$

Again, we can use distributive property of multiplication that says,

$a(b+c)=a \times b+ a \times c$

So,

$2(4+5i) \times (2-9i)=2\times 4+2 \times 5i\times(2-9i)$

$=8+10i \times(2-9i)=8\times 2-8 \times 9i+10i \times 2-10i \times 9i$

$=16-72i+20i-90i^2$

since, $i^2=-1$

we get,

$16-72i+20i-90 \times (-1)=16-52i+90$

$=106-52i$

Therefore,

$2x \times y=106-52i$

7 0

2 years ago

Read 2 more answers

What is the measure of angle x?

arsen [322]

Answer:

x° = 83°

Step-by-step explanation:

All angles in a triangle (any kind of triangle: right, isosceles, equilateral etc.) add up to 180 degrees.

So, if we are given the ABC triangle, then:

angle A + angle B + angle C = 180°

In this particular case, we are given values of two angles, so using the previous relation, we can write:

x° + 44° + 53° = 180°

Now, it's easy to find x°:

x° = 180° - 44° - 53°

x° = 83°

3 0

2 years ago