If the sum of x and y is 90 and y is 6 more than four times x, which of the following systems of equations could be used to solve for x and y?

A.x+y=90
x−4y=6

B.x+y=90
4x−y=−6

C.x+y=90
6x−y=−4

D.x+y=90
4x−y=6

Answer:

x=-2

Step-by-step explanation:

4x-1=3x-3

x=-2

X = -2

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable.

Step-by-step explanation:

3. Let us take apart the right side

1+cos2x = 1 + cos^2x - sin^2x

1 - sin^2x = cos^2x

therefore we have 2cos^2x

Therefore we just have cos^2x/cos^2y = 2cos^2x/2cos^2y, which is true.

4. tan(x/2) = +/- sqrt((1-cosx)/(1+cosx)) using half angle identities for sin and cos.

Therefore tan^2(x/2) = (1-cosx)/(1+cosx)

If we multiply top and bottom by tanx, we get

(tanx - sinx)/(tanx + sinx), which is the right side.

Answer:

x=57

Step-by-step explanation:

add a line perpendicular to PQandRS

then 90+90+130+116+2x=540

2x=114

x=57

in the figure PQ//RS

the value of x=33

Answer:

uhm where is the chart??

Answer: square root 2 over 2

Step-by-step explanation: edg BS algebra2b

Answer: 2/3 bowl

Step-by-step explanation: you divide the 2 bowls by 3 since there are 3 people

Answer:

I think the answer is negative five (-5)

Answer:

It is a many-to-one relation

Step-by-step explanation:

Given

See attachment for relation

Required

What type of function is it?

The relation can be represented as:

[tex]\left[\begin{array}{c}x\\ \\-5\\-2\\1\\5\end{array}\right][/tex]         [tex]\left[\begin{array}{c}y\\ \\10\\11\\4\\10\end{array}\right][/tex]

Where

[tex]x = domain[/tex] and [tex]y = range[/tex]

Notice that the range has an occurrence of 10 (twice)

i.e.

[tex](x_1,y_1) = (-5,10)[/tex] and [tex](x_2,y_2) = (5,10)[/tex]

In function and relations, when two different values in the domain point to the same value in the range implies that, the relation is many to one.

Answer:

The only one

Step-by-step explanation:

The one that is shown has a negative b^2-4ac value.

We know this because the function has no real roots -> that means that they must be complex, which can only occur if b^2-4ac < 0

Answer:

it's D, the last graph.

Step-by-step explanation:

took the unit test review and made a 100

Answer:

y=x

Step-by-step explanation:

That's legit it. Type it into a graphing calc and it goes through(1,1) ad (3,3).

Step-by-step explanation:

I guess the answer is 7....

I am not sure....I tried

Answer:

16.04°

Step-by-step explanation:

[tex]2.8 \: rad = x \: degrees \\ [/tex]

1rad × 180/π = 57.296°

[tex]x = 2.8 \times \frac{180}{\pi} = 16.0428 \\ x = 16.04[/tex]

Answer:

D.) -6m - n + 3

Step-by-step explanation:

-3 (2m - 1) - n

-6m + 3 - n

-6m - n + 3

If I helped, please mark me the Brainliest!?!

Answer:

The slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]

Option C is correct option.

Step-by-step explanation:

We need to find the slope (rate of change) of the graph

The formula to calculate slope is: [tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]

Taking two points from the graph: (You can take any two points from the graph)

Point 1 (-4,-3)

Point 2 (-2,0)

We have: [tex]x_1=-4, y_1=-3, x_2=-2, y_2=0[/tex]

Putting values in the formula and finding slope

[tex]Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{0-(-3)}{-2-(-4)} \\Slope=\frac{0+3}{-2+4} \\Slope=\frac{3}{2}[/tex]

So, the slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]

Option C is correct option.

Answer:

7x12

Step-by-step explanation:

product is multiplication

Answer:

-1/6

Step-by-step explanation:

Crew because 23>8 23 is larger than 8

Magnitude=A great size, or extent of something

Answer:

Sophia gets 7,150

Step-by-step explanation:

Answer:

deciameter form is 16.256.... one meter is 100.... one decameter 100.... one hectometer is 10000.... one kilometer 10000

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Use the pythagorean theorem to find the hypotenuse. You can do this by squaring 12 and 11 (separately) and then adding those together. You'll get 265. However, since this is c squared and not c, you have to find the square root for the correct answer. The square root of 265 is approximately 16.28. Hope this helps!

The answer should be 126 or A.

Given:

The function is [tex]f(x)=3.5x^3[/tex].

To find:

Whether the given function is Steeper, Less steep, or Reflected over the x-axis to describe the other function.

Solution:

Transformation of function: If f(x) is function and

[tex]g(x)=a\ f(x)[/tex]

Here, a is vertical stretch or compression.

If 0<|a|<1, then g(x) is less steeper than f(x) because f(x) is vertically compressed.

If |a|>1, then g(x) is steeper than f(x) because f(x) is vertically stretched.

If a is negative, the f(x) is reflected over the x-axis, to get g(x).

On comparing the function [tex]p(x)=4.5x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get 4.5>3.5 So, it is the case vertical stretched and p(x) is steeper than f(x).

On comparing the function [tex]q(x)=-x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get |-1|=1<3.5 So, it is the case  vertical compression and q(x) is less steeper than f(x) and because of negative sign the function is reflected over axis.

On comparing the function [tex]r(x)=3x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get 3<3.5 So, it is the case vertical compression and r(x) is less steeper than f(x).

Therefore, [tex]p(x)=4.5x^3[/tex]  is steeper.

[tex]q(x)=-x^3[/tex] is less steep and reflected over the x-axis.

[tex]r(x)=3x^3[/tex] is less steep.

Answer:

B also the full name of vertically angles is called the vertically opposite angle theorem or voat

Answer:

there are 16 ounces in a pound.

16/7=2.28571428

2 full ounces with a bit left over.

2.29