Hello I'm in a math test and I really need help so please answer

Answer:

sqrt7/4

Step-by-step explanation:

sin is opposite/hypotenuse which means sqrt63/12 then sqrt63=3sqrt 7 and simplifies get (sqrt7)/4 Done!

Answer:

12(x+0.7)

Step-by-step explanation:

a number=x

the sum of a number and seven tenths is (x+0.7)

12 times that is 12(x+0.7)

Hope I helped!

Answer:

y-7=4x(x+3)

Step-by-step explanation:

(The 4x is 4 times ...)

Answer:

[tex]y -7 = 4(x+3)[/tex]

Step-by-step explanation:

Point-slope form is in the format of [tex]y-y_1 = m (x-x_1)[/tex]. When knowing a line's slope and a point it passes through, you can write an equation in that format. The [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] must be substituted for with real values.

The [tex]m[/tex] represents the slope, thus substitute 4 for [tex]m[/tex]. [tex]x_1[/tex] represents the x-value of one point the line passes through, while [tex]y_1[/tex] represents that same point's y-value. The line passes through (-3, 7), so substitute -3 for [tex]x_1[/tex] and 7 for [tex]y_1[/tex]. This gives the following answer and equation:

[tex]y-(7) = 4(x-(-3))\\y -7 = 4(x+3)[/tex]

Answer:

21

Step-by-step explanation:

The sum of degrees in a triangle is 180, so we have:

3x+100+x-4=180

add 4 on both sides

3x+100+x=184

subtract 100 on both sides

3x+x=84

Combine like terms

4x=84

84/4 = 21

(btw i'm actually 10 years old 0_0)

Answer:

6 = 36450

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

start at A and got to A'

In order to get to to A' you need to count how many blocks down and how many blocks left or right. Repeat

Answer:

its

2

6

5

Step-by-step explanation:

Answer:

I would say

2a+b/4

Hope this helps!

Answer:

200 miles

Step-by-step explanation:

First, set up the equations.

plan 1: initial fee of $55.96, $0.12 per mile

plan 2: initial fee of $63.96, $0.08 per mile

We want to know at what distance will the cost be the same. So, set the equations equal to each other.

0.12x + 55.96 = 0.08x + 63.96

Combine the variables.

0.04x + 55.96 = 63.96

Combine the constants.

0.04x = 8

Divide by 0.04 to isolate x.

x = 200 miles

Check by plugging x back into each equation.

y = 0.12(200) + 55.96

y = 24 + 55.96

y = $79.96

y = 0.08(200) + 63.96

y = 16 + 63.96

y = $79.96

You are correct!

Answer:

A watermelon weighs about 3 (grams /(kilograms) 3.

Step-by-step explanation:

Answer:

6,450 g

Step-by-step explanation:

Since there are 1000 grams in 1 kilogram, you multiply 6.45 kg x 1000 g.

6.45 x 1000 g equals 6,450 grams. Move the decimal 3 times to the right because there are 3 zeroes in 1000.

You always move your decimal to the right when multiplying decimals.

Answer:

[tex]x^2 - 2x + 10[/tex], option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

[tex]i^2 = -1[/tex]

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

[tex]ax^{2} + bx + c, a\neq0[/tex].

This polynomial has roots [tex]x_{1}, x_{2}[/tex] such that [tex]ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})[/tex], given by the following formulas:

[tex]x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}[/tex]

[tex]x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}[/tex]

[tex]\bigtriangleup = b^{2} - 4ac[/tex]

In this question:

The solutions are:

[tex]x_1 = 1 - 3i, x_2 = 1 + 3i[/tex]

We have to find the polynomial. All option have [tex]a = 1[/tex]. So

[tex](x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10[/tex]

The correct answer is given by option b.

Answer:

Step-by-step explanation:

The slope is -3/2.

The y-intercept is: (0,6)

Answer:

(x - 50 / 4) = y

Step-by-step explanation:

On photo

To find the inverse function, you will have to write n in terms of c (which means number of visits as function of monthly cost).

The inverse function would be:

[tex]n = \dfrac{c-50}{4}[/tex]

Inverse function of given function.

The inverse function of f is a function of f which can remove the effect of f on its input.

Inverse is only possible if the function f is bijective (one to one correspondence, which means one input to one output uniquely and one output is connected to only one input by mapping f)

Since the given function is a linear function and not a  vertical line, thus, one input n uniquely maps to one output cost and one cost uniquely is obtained by one and only one value of n.

[tex]cost = 50 + 4n\\ 4n = cost - 50\\\\ n = \dfrac{\text{c - 50}}{4} \text{\: (assuming cost to be denoted by c)}[/tex]

Thus, we have the inverse function of given function as:

[tex]n = \dfrac{c-50}{4}[/tex]

Learn more about inverse functions here:

https://brainly.com/question/1422702

Answer:

a1: Mount Whitney, California has the highest elevation

a2: Death Valley, California has the lowest elevation

b: The elevation is 6,317 ft higher

c: Death Valley, California has an elevation of 952 lower than Detroit, Michigan.

d: Houston, Texas has an elevation of 132 feet higher than New Orleans, Louisiana.

Step-by-step explanation:

Answer:

a) d = 8.5 units

The distance of a line segment with end points

d = 8.5 units

Step-by-step explanation:

Step(i):-

Given points are G(4,9) and H( 7,1)

By using distance formula

   G H  = [tex]\sqrt{x_{2}-x_{1} )^{2} +(y_{2} -y_{1} )^{2} }[/tex]

Step(ii):-

[tex]d = \sqrt{7-4 )^{2} +(1-9 )^{2} }[/tex]

d = [tex]\sqrt{3)^{2} +(-8 )^{2} } = \sqrt{9+64} = \sqrt{73}[/tex]

d = 8.5 units

Answer:

1680

Step-by-step explanation:

280 times 6 gives you total calories

Answer:

Y= X/4+2

Step-by-step explanation:

So first you find the slope and the y intercept

the slope is 1/4 and the y intercept is 2

so the equation would be Y= X/4+2

Answer:

-1,0

Step-by-step explanation:

its an estamant so its nothing exactly

its closest to -1 and closest to 0

Answer:

The answer to this equation is:

(-1,0)

Step-by-step explanation:

-4x+7(2+3x)=1

-4x+14+21x=1

-4x+21x=1-14

17x=-13

x=-13/17=-0.764 estimation: 1

y=2+3x

y=2+3(-0.764)

y=2-2.292

y=-0.292 estimation: 0

Answer:

What do you need help with?

Step-by-step explanation:

Answer: whats the. Question??

Step-by-step explanation:

Answer:

$2. 75

Step-by-step explanation:

If he spent $55 on 20 lunches then each lunch was $2. 75

2. 75×20= 55

Answer:

Hey! so the answer is $2.75

Step-by-step explanation:

If he spet 55 dollars for the office you would have to divide the money to the number of people. so therefore $2.75.

Also, you dot have to love me ^-^.

Hoped this helped Im Eve btw. Hope you have a great day and consider marking this brainliest Thank you so much if you do! ✨

Answer:

20

Step-by-step explanation:

14/63=2/9=20/90

Answer:

0.5874

Step-by-step explanation:

Answer:

0.5874

Step-by-step explanation:

Getting 58.74 percent of a number is the same as multiplying the number 0.5874

Answer:

A) 27/512

Step-by-step explanation:

Answer:

[tex]= \frac{27}{512}[/tex]

Step-by-step explanation:

3*3*3 = 9 and 8*8*8 = 512 so [tex](\frac{3}{8})^{3}[/tex]

(Please give me Brainliest)

Answer:

D. [tex] 2\sqrt {133}[/tex]

Step-by-step explanation:

[tex] {x}^{2} = {18}^{2} + ( {12}^{2} + {8}^{2} ) \\ \\ {x}^{2} = 324 + (144 + 64) \\ \\ {x}^{2} = 324 + 204 \\ \\ {x}^{2} = 528 \\ \\ x = \sqrt{532} \\ \\ x = \sqrt{4\times 133} \\ \\ x = 2\sqrt {133}[/tex]

Answer:

I do not want you to just get this answer and stay with it. I want you to learn.

Step-by-step explanation:

I struggled with this also. What really helped me was a site called Khan Academy. I wish you luck as it helped me.

Answer: 32 cm

Step-by-step explanation:

Answer:

All of the sides of the square are 8 cm. So the prementer would be 32 cms

Step-by-step explanation:

To find the sides of the square, you got to think what x what = 64. This shows you that 8 x 8 is 64. and since it is a square, all of the sides are the same. So 8+8+8+8 = 32 or you can do 8 x 4 = 32

Sorry for any spelling mistakes.