please help me!!!
Solve the system by substitution.
y=-x
-2x+5y=-28

Answer: $13.11

Step-by-step explanation:

hope this helps!

It states reflected over the y-axis, so treat the y axis as a mirror and you will realise that the x is always the inverse number. For example, if it is -2, the reflected value will be 2. (y remains unchanged)

X: (10,2)

Y: (8,-7)

Z: (-9,5)

Answer:

Step-by-step explanation:

[tex]6^{2}[/tex]+[tex]3^{2}[/tex]= 45

QS=3[tex]\sqrt{5}[/tex]  

16+45=61

NS=[tex]\sqrt{61}[/tex]

not sure why the answer provided starts with 6 but this should be correct

Answer: = cos 4x

[tex]\frac{tan2x}{tan4x-tan2x}\\\\=\frac{tan2x}{\frac{2tan2x}{1-tan^{2}2x }-tan2x }\\\\=\frac{tan2x(1-tan^{2}2x) }{2tan2x-tan2x(1-tan^{2}2x) }\\\\=\frac{tan2x(1-tan^{2}2x) }{tan2x(2-1+tan^{2}2x) }\\\\=\frac{1-tan^{2}2x }{1+tan^{2}2x } \\\\=\frac{1-\frac{sin^{2}2x }{cos^{2}2x } }{1+\frac{sin^{2}2x }{cos^{2}2x } }\\\\=\frac{cos^{2}2x-sin^{2}2x }{cos^{2}2x+sin^{2}2x } \\\\=\frac{cos4x}{1}\\\\=cos4x[/tex]

Step-by-step explanation:

Answer:

Parallel = lines with the same slope

Perpendicular = lines whose slopes are negative reciprocals (i.e. product is –1)

Step-by-step explanation:

The first part: circle b, c, d, f (1 ³/₄ is another way of saying ⁷/₄), and h (a horizontal line y = b has a slope of 0)

The second part: circle a, d (1 ⁴/₇ is another way of writing ¹¹/₇, the negative reciprocal of –⁷/₁₁), and e

Hope this helps! Have a great day!

Answer:

See answers below

Step-by-step explanation:

Using the coordinates from the table (0, 12) and (1, 14)

m = 14-12/1-0

m = 2/0

m = 2

Hence the slope of the table is 2

y intercept occurs at x = 0

Substitute m = 2 and (0,12) into the equation y = mx+c

12 = 2(0) + b

12 = b

b = 12

Hence the y-intercept is 12

Get the equation

Recall that y = mx+c

y = 2x + 12

Hence the required equation is y = 2x+12

Answer:

30% increase or decrease

Step-by-step explanation:

Because every mile is 3% and according to the question it is reduced 90 miles

Answer:

the square root is 2.82

Step-by-step explanation:

24-16=8

√8=2.82

Answer:

23, 29, 31, 37, 41, 43, 47, 53, 59, 61

what are you asking?

Answer:

You have to fine the number that matches with the "X" so the answer would be 126 divided by 43 which is 2.9. 2.9 is closer to 3 than 2 so the "x" is 3

Step-by-step explanation:

Answer:

2.6315789473

Step-by-step explanation:

Hope this helps!

Incomplete question: Options

(a) Each triangular part and each rectangular part represents 1/2 the area of one square.

(b) Each triangular part has an area that is greater than the area of each rectangular part.

(c) Each triangular part and each rectangular part represents 1/4 the area of one square

(d) Each rectangular part has an area that is greater than the area of each triangular part.

See attachment for squares

Answer:

(a) Each triangular part and each rectangular part represents 1/2 the area of one square.

Step-by-step explanation:

Given

See attachment

Required

Which statement is true

Before the division, the area of both squares is:

[tex]Area = l * w[/tex]

After the division:

The area of the triangle is:

[tex]Area = \frac{1}{2} * base * height[/tex]

[tex]A_1 = \frac{1}{2} * l * w[/tex]

Substitute Area for l * w

[tex]A_1 = \frac{1}{2} *Area[/tex]

This equals half the area of the square

The area of the rectangle is:

[tex]Area = length * width[/tex]

The length of the rectangle is now half the length of the original square.

So, we have:

[tex]A_2 = \frac{1}{2} l * w[/tex]

Substitute Area for l * w

[tex]A_2 = \frac{1}{2} *Area[/tex]

From the values of A1 and A2, we can conclude that (a) is true

You find the intersection point of the two lines, which is (3, -2).

It is what the question meant when it asked for "solution".

These two lines are y = mx + c, which is another form of linear equations with two variables you are likely familiar with

x+y=20

x-y=10

Hope this clears up your confusion.

Answer:

to this question is it is 1.01

Answer:

The answer is 70

Step-by-step explanation:

5 x 5 = 25

14 x 5 = 70

Hope this helps

Answer:

probley A

Step-by-step explanation:

Answer: the slope is 3/4.

y=mx+b and m is always the slope.

Answer:

the slope is 3/4

Step-by-step explanation:

y = mx + b

y = slopex + y intercept

y = 3/4x - 1

slope = 3/4

y intercept = -1

Answer:

D

Step-by-step explanation:

To be an arithmetic sequence, the numbers have to be added or subtracted by a constant number. D is not the answer because -2+6 equals 4, but 4+6 doesn't equal -6, so D cannot be a arithmetic sequence.

Answer:

12.8

Step-by-step explanation:

Answer:

x=130 I believe

Step-by-step explanation:

28+8+14+x=180

50+x=180

x=130

Answer:

$115.20

Step-by-step explanation:

Hi! We need to find 1% of 96 to multiply by 20.

96 / 100 = .96

Now we multiply by 20.

20 x .96 = 19.2.

Now, we add 19.2 to what she earned in the first place (96).

19.2 + 96 = 115.20

Hope this helps!

Answer:

10

Step-by-step explanation:

20 divided by 4 = 5 and times it from there

Answer:

12a-2b4 is a binomial

Step-by-step explanation:

one monomial is 12a-2

and the two monomial is b4

ill give you 50 pints for a brainliest

Answer:

3 ft wide and 2 ft tall

Step-by-step explanation:

That's the smallest surface area I could find

It holds 36 cubic feet and is 66 for surface area

Answer:

3.20 there is your answer