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3 years ago

Can someone help me quickly please

Mathematics

2 answers:

sergij07 [2.7K]3 years ago

5 0

We can use the slope formula to calculate the slope and then use point-slope form to compute the equation.

We are given two points in the line, and any two are sufficient to find the slope.

y = (y2 - y1)/(x2 - x1)

Given (-4, -6) and (2, 6):

(6 - (-6))/(2 - (-4)) = 12/6 = 2.

We can now plug in any point into point-slope form to calculate the line’s equation.

Slope: 2.
Point: (2, 6).

y - y1 = m(x - x1)

y - 6 = 2(x - 2)

Normally this would be sufficient as this IS a line. However, the question asks for y-intercept form. So let’s solve for y.

y - 6 = 2(x - 2)

y - 6 = 2x - 4

y = 2x + 2.

Hope this helps!

bazaltina [42]3 years ago

3 0

Answer:

The equation is $y=2x+2$

Step-by-step explanation:

The initial value or "b" is 2 and the slope is $\frac{2}{1}$ or just 2

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Please help! 9/4(7+3-4*9)

Serga [27]

Answer:

58.5

Step-by-step explanation:

This expression should be simplified using order of operations. According to order of operations or PEMDAS, complete any numbers in parenthesis then any exponents, multiplication, division, additions and subtraction moving left to right through each operation.

Begin with Parenthesis.

(7+3-4*9) - Multiply first

(7+3-36) - Then add/subtract left to right

10 - 36 = -26

Replace -26 where the parenthesis were in the original expression.

9/4 (-26)

234/4

58.5

6 0

3 years ago

Simplify 4xy + 9x - 3y + z + xy

Contact [7]

4xy + 9x - 3y + z + xy

Combine Like Terms
=4xy+9x+−3y+z+xy
=(4xy+xy)+(9x)+(−3y)+(z)
=5xy+9x+−3y+z

Answer =5xy+9x−3y+z

I hope this helps, can I get brainliest thanks

6 0

3 years ago

Read 2 more answers

If the 9-inch wheel of cheese costs $18.60, what is the cost per square inch? If the cost is less than a dollar, put a zero to t

vagabundo [1.1K]

Find the area of the wheel:

Area of a circle is found using the formula:

Area = PI x r^2

9 inch would be the diameter, so the radius would be 9/2 = 4.5 inches.

The area would be 3.14 x 4.5^2 = 63.6 square inches.

Now divide the price by the area to get price per square inch:

Cost per square inch = 18.60 / 63.6 = $0.29 (rounded to the nearest cent)

5 0

3 years ago

Read 2 more answers

Find the product.

4vir4ik [10]

Answer :

$6{y}^{4} {z}^{2} + 12 {y}^{3} {z}^{2}-3 {y}^{3} {z}+3 {y}^{2} {z}^{2}$

Step-by-step explanation :

To find the product of

$3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)$

First we expand the bracket ,

it implies that, we use the expression outside the bracket to multiply individual expressions inside the bracket.

Hence

$3 {y}^{2} z(2 {y}^{2} z + 4yz - y + z)$

$= 3 {y}^{2} z(2 {y}^{2} z) + 3 {y}^{2} z(4yz) - 3 {y}^{2} z(y )+3 {y}^{2} z( z)$

we now apply the law of indices

${a}^{m} \times {a}^{n} = {a}^{m+n}$

meaning, when you are multiplying two expressions with the same bases , repeat one of the bases and add the exponents.

Then, simplify to obtain

$= 6{y}^{4} {z}^{2} + 12 {y}^{3} {z}^{2}-3{y}^{3} {z}+3 {y}^{2} {z}^{2}$

3 0

3 years ago

Please help me with this please and thank you

melamori03 [73]

Answer:

Step-by-step explanation:

let X represent the smaller paintings and Y represent the larger paintings

since she bought 8 paintings

X+Y=8

She bought all the eight paintings for $230 and X is worth 25 while Y is worth 40

25×X+40×Y=230

25X+40Y=230

7 0

2 years ago