I got c0vid and I’m behind please help

Answer:

41

Step-by-step explanation:

b^2 -2ac

Let  a=4  b=3  c=-4

( 3)^2 -2 (4) (-4)

Exponents first

9 - 2 (4) (-4)

Multiply

9 + 32

41

Answer:

41

Step-by-step explanation:

b^2 - 2ac                plug in the values

3^2 -2(4)(-4)             start with the exponent (remember PEMDAS)

9  -2(4)(-4)                start multiplying from left to right

9  -8(-4)                    multiply

9 + 32                       add

41                              that's your answer :)  

Answer:

Divide the amount of money she has by the number of days

Step-by-step explanation:

The unit would be dollars per day. 75/30 = 2.50. Therefore, the unit rate is $2.50/day. Shana spends $2.50 a day for lunch.

Answer:

-18

Step-by-step explanation:

-4 + 2 * -7 = -18

-18 is the answer

[tex]\huge\fbox{Hi~there!}[/tex]

We are given the expression: -y+2a

We are also given the values of y and a.

All we have to do is plug in the values and solve:

[tex]\rm{-y+2a[/tex]

[tex]\rm{-4+2(-7)[/tex]

[tex]\rm{-4-14[/tex]

[tex]\rm{-18[/tex] (Answer)

Hope you find it helpful.

Feel free to ask if you have any doubts.

[tex]\bf{-MistySparkles^**^*[/tex] :)

Answer:

number of sides: 18 sides

Explanation:

                        Total Interior angle = ( n - 2 ) * 180°

Using the formula:

2880° = ( n - 2) * 180°

n - 2 = 16

n = 16 + 2

n = 18 sides

All are the exponential function.

Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. c is the base and x is the power.

1.  y = f(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

2.  y = h(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

3.  y = g(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

4.  y = k(x) is a exponential function.

Because the range of the exponential function is from 0 to ∞ for all values of x. And it is 1 at x = 0.

Thus, all are the exponential function.

More about the exponent link is given below.

https://brainly.com/question/5497425

Answer:

-2/3x + 3

Step-by-step explanation:

Standard form is just ax^2 + bx + c

In this equation, there is no ax^2. So we have 2/3x + 3.

We don't have to make any changes because the equation is already in standard form.

Answer:

x^5+5x^4−x^3

Step-by-step explanation:

Expand by distributing terms

x^3x^2+x^3*5x-x^3

Use the product rule x^a+x^b=x^a+b

x^3+2 +x^3*5x-x^3

Simplify 3+2 to 5

x^5+x^3*5x-x^3

Regroup

x^5+5x^33-3^3

Use product rule x^a+x^b=x^a+b

x^5+5x^3+1   -x^3

Simplify 3+1 to 4

x^5+5x^4−x^3

Answer:

14 and 8

Step-by-step explanation:

Answer:

8000m

Step-by-step explanation:

8x10^3=8000

Answer:

[tex]1\frac{1}{15}[/tex] in reduced form.

Step-by-step explanation:

[tex]\frac{2}{5} +\frac{2}{3}[/tex]

[tex]\frac{3*2+2*5}{5*3}[/tex]

[tex]\frac{6+10}{15}[/tex]

[tex]\frac{16}{15}[/tex]

[tex]1\frac{1}{15}[/tex]

Answer:

[tex]1\frac{1}{15}[/tex]

Step-by-step explanation:

[tex]\frac{2}{5} + \frac{2}{3}\\\\\frac{2*3}{5*3} + \frac{2*5}{3*5}\\\\\frac{6}{15} + \frac{10}{15}\\\\\frac{6+10}{15}\\\\\frac{16}{15}=1\frac{1}{15}[/tex]

Your answer is: [tex]1\frac{1}{15}[/tex]

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

The amount of money the family still needs to save is $2236.

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

Their vacation savings account currently has a balance of $2,764.

The family would like to have at least $5,000.

The amount of money the family still needs to save.

Forming the equation, we get

Let x be the amount needed to save. then

x + 2764 ≥ 5000

On simplifying, we get

x + 2764 ≥ 5000

            x ≥ 5000 - 2764

            x ≥ 2236

Thus, the amount of money the family still needs to save is $2236.

More about the linear system link is given below.

https://brainly.com/question/20379472

Answer: B

Step-by-step explanation:

hope this helps may you mark me as brainlest and here is proof

Answer:

let a=1 t

the answer will be is

5

Answer:

5/a = 6/d

Step-by-step explanation:

if you cross-multiply this proportion you get:

6a = 5d

divide each side by 6 to isolate 'a':

a = 5d/6

5/1 ÷ 5d/6 is the same as 5/1 × 6/5d

5/1 × 6/5d = 6/d

The product of numbers or expressions involve multiplying the numbers and the expressions

From the table, we have the following product

2x* -y = -2y

or

-y * 2x =-2y

The above equation is incorrect.

This is so because, the product of 2x and -y is -2xy, not 2y

Hence, the incorrect value in the table is -2y and the correct value is -2xy

Read more about products at:

https://brainly.com/question/10873737

Answer:

A and B

Step-by-step explanation:

The given coordinates of the vertices of the triangle ΔABC, which are: A(-5, -1), B(-5, -1), and C(-1, -1), gives the side lengths and the angle measures found using Pythagorean theorem, and the law of cosines as follows:

AB = 2, BC = 4, AC ≈ 4.47

m∠B = 90°, m∠A ≈ 63°, m∠C ≈ 27°

Pythagorean theorem states that in a right triangle, the sum of the squares of the legs, is equal to the square of the length of the hypotenuse side.

The vertices of the triangle are; A(-5, 1), B(-5, -1), and C(-1, -1)

The length, l, of a line having points (x₁, y₁) and (x₂, y₂) can be found using Pythagorean theorem as follows;

[tex]l = \sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}[/tex]

The length of AB = √((-5 - (-5))² + (-1 - 1)²) = 2

Length of BC = √((-1 - (-5))² + (-1 - (-1))²) = 4

Length of AC = √((-1 - (-5))² + (-1 - 1)²) ≈ 4.47

The interior angles can be found using the law of cosines as follows:

a² = b² + c² - 2·b·c·cos(A)

Which gives: 2·b·c·cos(A) = b² + c² - a²

[tex]\angle A = arccos\left(\dfrac{b^2 + c^2 - a^2}{2\cdot b \cdot c} \right)[/tex]

Where:

a, b, and c are the side lengths of the triangle, and ∠A is the angle opposite side a.

Taking AB = c, BC = a, AC = b, gives:

[tex]\angle A = arccos\left(\dfrac{4.47^2 + 2^2 - 4^2}{2\times 4.47 \times 2} \right) \approx 63^{\circ}[/tex]

Similarly, we have:

[tex]\angle B = arccos\left(\dfrac{4^2 + 2^2 - 4.47^2}{2\times 4\times 2} \right) \approx 90^{\circ}[/tex]

Which by the angle sum property of a triangle gives: ∠C = 180° - 90° - 63° = 27°

The option that gives the side lengths and the angle measure is therefore:

Learn more about the law of cosines here:

https://brainly.com/question/4372174

#SPJ1

Answer:

Step-by-step explanation:

First, we need to look at the simpler equation. We see that the top equation is the simpler one.

y=-2x + 6

Now we plug that equation with the other one.

6x + 3(-2x + 6) = 18

6x -6x + 18 = 18

18 = 18

Since we see that 18 = 18. We know that this equation is a true equation. We can plug the y-variable in first and it will still be a true statement.

Answer:

Below!

Step-by-step explanation:

We know that:

Solution:

Hence, the value of x and y are 23° and 67° respectively.

7x + 5y = 43 --------(i)

5x + 5y = 5 --------(ii)

for solving, eqn (i) - eqn (ii)

7x + 5y = 43

5x + 5y = 5

- - -

__________

2x = 38

=> x = 19

putting x = 19 in eqn (ii)

we get, y = -18

(x,y) = (19,-18)

Answer:

48 serving

Step-by-step explanation:

Data :

       Food = 24 pound

Food each day =8 ounces

As 1 pound  = 16 ounces

So      24 × 16 = 384 ounces

Now divide

 394/8 =  48

Answer:

4+4 is 8  so do the tens so that is 4

Step-by-step explanation:

Answer:

The second option.  x > 3

Step-by-step explanation:

See attached.

Answer:

y 15 x 9 they are asking for there parallel so go with the line directly across from them

Answer:

the answer is 26x - 94

Answer:

here are the coordinates :

(0,5) and (1,3)

Answer:As we need 1 Shirt(10 options) and 1 Pant(5 options) for an outfit

10P1*5P1=10*5=50 outfits

Step-by-step explanation:

yay

The depth of the swimming pool that is filled to the top is; 4 m

I have attached a schematic diagram showing this question.

The correct width of the pool is 4 meters. Thus; w = 4 m

Incident Angle; θ₁ = 20°

A right angle is 90° and so the angle θ₂ is calculated from;

θ₂ = 90° - θ₁

θ₂ = 90° - 20°

θ₂ = 70°

We can use snell's law formula to find θ₃.

Thus;

n₁sinθ₂ = n₂sinθ₃

where;

n₁ is refractive index of air = 1

n₂ is refractive index of water = 1.33

Thus;

1*sin 70 = 1.33*sin θ₃

sin θ₃ = (sin 70)/1.33

Solving this gives;

θ₃ = 44.95°

By usage of trigonometric ratios we can find the depth of the pool using;

w/d = tan θ₃

Thus;

d = w/(tan θ₃)

d = 4/(tan 44.95)

d ≈ 4 m

Read more about Snell's Law at; https://brainly.com/question/10112549

Answer:

6.3 ≈ 6 kg

Step-by-step explanation:

6300÷1000= 6.3

Answer:

BC = 20.7

Explanation:

Using the formula:  BC² = 15² + 13² - 2*15*13*cos(95)

                                BC² = 427.991

                                BC = √427.991

                                BC = 20.7 units