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3 years ago

What is the point-slope form of 4x + 8y = 5?

Mathematics

1 answer:

Goryan [66]3 years ago

4 0

Answer: y= -1/2x +5/8

Good luck !

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Find two number that are not prime and have a HCF of 1? Help me please^°^

vodomira [7]

Answer:

4,9

Step-by-step explanation:

(1). 4,9 are not prime number

(2) 4=1×2×2

9 = 1×3×3

so,

HCF of 4,9 will be

= 1.

3 0

3 years ago

The painting shown at the right has an area of 220. What is the value of x?

tangare [24]

Answer:

9.76

Step-by-step explanation:

area of a rectangle = length * breadth

length = (2x + 3)

breadth = x

given area is 220 sq. inches.

thus,

220 = x * (2x+3)

220 = 2x² +3x

2x² + 3x -220 = 0

x = (-b + √ ( b²-4ac) ) ÷ 2a

x = ( -3 + √ ( 3² - 4*2*220) ) ÷ 2*2

x =9.76

5 0

3 years ago

Azmyne decided to spend 6 1/2 hours studying over the weekend. She spent 1 1/4 hours studying on Friday evening and 2 2/3 hours

nata0808 [166]

Answer: $2\ \dfrac{7}{12}\ \text{hours}$

Step-by-step explanation:

Given

Azmyne decided to study a total of $6\ \frac{1}{2}\ hours$

She spent $1\ \frac{1}{4}\ hours$ on Friday and $2\ \frac{2}{3}\ hours$ on Saturday

Hours spent on Friday

$\Rightarrow 1\ \frac{1}{4}=\frac{5}{4}\ hours$

Hours spent on Saturday

$\Rightarrow 2\ \frac{2}{3}=\frac{8}{3}\ hours$

She must study for

$\Rightarrow \dfrac{13}{2}-\dfrac{5}{4}-\dfrac{8}{3}\\\\\Rightarrow \dfrac{13\times6-5\times3-8\times4}{12}=\dfrac{78-15-32}{12}\\\\\Rightarrow \dfrac{31}{12}=2\ \frac{7}{12}\ \text{hours}$

4 0

3 years ago

If 2i is a zero of f(x)=x^4+x^2+a, find the value of a

Sedbober [7]

By the polynomial remainder theorem, because x = 2i is a zero of f(x), we have no remainder upon dividing f(x) by x - 2i.

Computing the quotient yields

$\dfrac{x^4+x^2+a}{x-2i} = x^3+2ix^2-3x-6i+\dfrac{12+a}{x-2i}$

Then if the remainder term is 0, follows that a = -12.

5 0

2 years ago

Last month, Mr. Douglas sold 36 of his books. This month, however, he only sold 8 books. What was the percent change in book sal

Luden [163]

Answer:

A decrease of 3.5%

Step-by-step explanation:

since 36-8 is 28, it went down a bit so it would be 3.5%

7 0

3 years ago

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