can someone pls help!!

Answer:

20^4

Step-by-step explanation:

2^4x10^4=160000

20^4=160000

The solutions to the equations are:

x = 21,

x = 7,

4 * 7 = 28,

3³ - 2³ = 19, and 30 - 2 = 28.

We have,

x + 7 = 28

To solve for x, we can subtract 7 from both sides of the equation:

x + 7 - 7 = 28 - 7

x = 21

So, the solution to the equation x + 7 = 28 is x = 21.

2x + 14 = 28

To solve for x, we can subtract 14 from both sides of the equation:

2x + 14 - 14 = 28 - 14

2x = 14

Next, we divide both sides of the equation by 2 to isolate x:

2x/2 = 14/2

x = 7

Therefore, the solution to the equation 2x + 14 = 28 is x = 7.

4 * 7 = 28

This equation is already solved.

The product of 4 and 7 is 28.

So, the equation 4 * 7 = 28 is true.

3³ - 2³ = 28

To solve this equation, we need to evaluate the exponentials:

3³ - 2³ = 27 - 8 = 19

Therefore, the equation 3³ - 2³ = 28 is not true; the correct value is 19.

30 - 2 = 28

This equation is already solved.

The difference between 30 and 2 is indeed 28.

So, the equation 30 - 2 = 28 is true.

Thus,

The solutions to the equations are:

x = 21,

x = 7,

4 * 7 = 28,

3³ - 2³ = 19, and 30 - 2 = 28.

Learn more about equations here:

https://brainly.com/question/17194269

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The complete question:

x + 7 = 28

2x + 14 = 28

4 * 7 = 28

3^3 - 2^3 = 28

30 - 2 = 28

Answer:

8%

Step-by-step explanation:

If he earned $120 out of $1500, just do 120/1500 which will give you 0.08 which is 8 percent.

Answer:

a = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

Identify variables

a = a

b = 9

c = 15

Step 2: Solve for a

Answer:

3.06

Step-by-step explanation:

3 is in the ones place, then theres the decimal, the tenths place, and the hundredths place. When rounding, you must make the number larger when its 5 or over. So the answer is 3.06

Answer:

3.055 rounded to the nearest hundredth = 3.06

Answer:

the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.

Answer:

the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.

Step-by-step explanation:

Answer:

3yz² - 3z² - 5y + 7

Step-by-step explanation:

Sum of two polynomials = –yz² - 3z² – 4y + 4

One of the polynomial = y - 4yz²- 3

Find the other polynomial

The other polynomial = sum of the polynomials - one of the polynomial

= –yz² - 3z² – 4y + 4 - (y - 4yz² - 3)

= –yz² - 3z² – 4y + 4 - y + 4yz² + 3

= -yz² + 4yz² - 3z² - 4y - y + 4 + 3

= 3yz² - 3z² - 5y + 7

A. 0 -2yz?

B. – 4y + 7 01 - 2yz

C. – 3y + 1 0 -5yz² + 3z² – 3y + 1 D. 3yz² - 3z² – 5y + 7

Answer:

a

Step-by-step explanation:

4 to the power of 4 is just 4x4 which equals 16

As per linear equation, the average of the student is 82.2.

The mean is 83.75.

A linear equation is an equation that contains one or multiple variable with the highest power of the variable is one.

The student got test average of 80, his quiz average of 72, homework of 90, and classwork of 93.

Test is worth of 30%.

Therefore, the weightage of test is

= 80 × 30%

= 24

Quiz is worth of 30%.

Therefore, the weightage of quiz is

= 72 × 30%

= 21.6

Homework is worth of 20%.

Therefore, the weightage of homework is

= 90 × 20%

= 18

Classwork is worth of 20%.

Therefore, the weightage of classwork is

= 93 × 20%

= 18.6

Therefore, the average of the student is

= (24 + 21.6 + 18 + 18.6)

= 82.2

Now, the mean is

= (80 + 72 + 90 + 93)/4

= 83.75

Learn more about the mean of a data set here: brainly.com/question/24245170

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what's the question ? is there something you don't understand

Answer:

23.92°, 78.503°, and 77.577°

Step-by-step explanation:

The coordinates of the vertices of the triangle are;

X(-3, -5), Y(2, 6), Z(6, 3)

The vectors are;

z = [tex]\left \langle 2 - (-3), 6 - (-5) \right \rangle[/tex] = [tex]\left \langle 5, 11 \right \rangle[/tex]

y = [tex]\left \langle 6 - (-3), 3 - (-5) \right \rangle[/tex] = [tex]\left \langle 9, 8 \right \rangle[/tex]

x = [tex]\left \langle 2 - 6, 6 - 3 \right \rangle[/tex] = [tex]\left \langle -4, 3 \right \rangle[/tex]

[tex]cos (\alpha ) = \dfrac{z \cdot y}{\left | z \right | \times \left | y \right |}[/tex]

Therefore, we get;

[tex]cos (\alpha ) = \dfrac{5 \times 9 + 11 \times 8 }{\left | \sqrt{5^2 + 11^2} \right | \times \left | \sqrt{9^2 + 8^2} \right |} = \dfrac{133}{\sqrt{146} \times \sqrt{145} } \approx 0.91409[/tex]

α = arccos(0.91490) ≈ 23.92°

γ = The angle between -y and x

-y = [tex]\left \langle -9, -8 \right \rangle[/tex]

We get;

[tex]cos (\gamma) = \dfrac{-y \cdot x}{\left | -y \right | \times \left | x \right |}[/tex]

Therefore;

[tex]cos (\gamma) = \dfrac{-9 \times -4 + -8 \times 3 }{\left | \sqrt{(-9)^2 + (-8)^2} \right | \times \left | \sqrt{(-4)^2 + 3^2} \right |} = \dfrac{12}{\sqrt{145} \times \sqrt{25} } \approx 0.199309[/tex]

γ = arccos(0.199309) ≈ 78.503°

γ ≈ 78.503°

By angle sum property, β = 180° - (α + β)

β ≈ 180° - (23.92° + 78.503°) = 77.577°

β ≈ 77.577°

The interior angles are;

23.92°, 78.503°, and 77.577°

Answer:

43.8°

Step-by-step explanation:

Applying,

Cosine rule,

From the diagram attached,

x² = y²+z²-2yxcos∅.................... Equation 1

where ∅ = ∠YXZ

Given: x = 8.7 m, y = 10.4 m, z = 12.4 m

Substitute these values  into equation 1

8.7² = 10.4²+12.4²-[2×10.4×12.4cos∅]

75.69 = (108.16+153.76)-(257.92cos∅)

75.69 = 261.92-257.92cos∅

collect like terms

257.92cos∅ = 261.92-75.69

257.92cos∅ = 186.23

Divide both sides by the coefficient of cos∅

cos∅ = 186.23/257.92

cos∅ = 0.722

Find the cos⁻¹ of both side.

∅ = cos⁻¹(0.7220)

∅ = 43.78°

∅ = 43.8°

Answer:

[tex]f(x)\neq g(x)[/tex]

[tex]when ~x=3[/tex]

[tex]So, the ~third~ option~is ~your~ answer[/tex]

Answer:

Step-by-step explanation:

95+16x-4=-1+39x

91+16x=-1+39x

91+1=39x-16x

92=23x

92/23=x

4=x

Answer:

C 2

Step-by-step explanation:

This is a parabolic function

Notice how we go negative and then positive

y = ax^2 +bx+c

Let x = 0

-5 = a(0) + b(0) +c

c = -5

y = ax^2 + bx -5

Let x = 3

4 = a(3)^2 +b(3) -5

Let x=-3

4 = a(3)^2 -b(3) -5

Add the two equations

4 = a(3)^2 +b(3) -5

4 = a(3)^2 -b(3) -5

----------------------------

8 = 2a (3)^2 - 10

18 = 2 a(9)

18 = 18a

a =1

Solving for b

4 = 1(3)^2 -b(3) -5

4 = 9 -3b -5

4 = 4 -3b

0 = -3b

0 =b

The equation is

y = (x)^2  -5

Letting y = -1

-1 =x^2 -5

Adding 5 to each side

4 = x^2

Taking the square root of each side

±2 = x

x= ±2

Given the choices

Answer:

The numbers are 18, 13, and 72.

Step-by-step explanation:

Let the three numbers be represented by a, b, and c.

The sum of the three is 103. Thus, we can write that:

[tex]a+b+c=103[/tex]

The second number is five less than the first. So:

[tex]b=a-5[/tex]

And the third number is four times the first. So:

[tex]c=4a[/tex]

Substitute:

[tex]a+(a-5)+(4a)=103[/tex]

Solve for a. Combine like terms:

[tex]6a-5=103[/tex]

Add five to both sides:

[tex]6a=108[/tex]

And divide both sides by six. Therefore:

[tex]a=18[/tex]

So, the first number is 18.

Since the second number is five less than the first, the second number is 13.

And since the third number is four times the first, the third number is 72.

Answer:

f(x) = sin(x)

Step-by-step explanation:

sin(x) = 0 for x = n×pi, n>=0

sin(x) = 1 for pi/2 and so on

so, clearly that graph is a pure sine wave.

Answer:

Step-by-step explanation:

scale factor=3/2

(8,6)

(12,6)

(12,10)

use formula

(x,y)=(kx,ky)  (k means scale factor)

(8,6)=(3/2*8 , 3/*6)

=(24/2 , 18/2)

=(12 , 9)

(12,6)=(3/2*12 , 3/2*6)

=(36/2 , 18/2)

=(18 , 9)

(12,10)=(3/2*12 , 3/2*10)

=(36/2 , 30/2)

=(18 , 15)

Answer:

18 ,15

Step-by-step explanation:

jwihehf

kkeje

kkejjehgo

ekke

Answer:

b

Step-by-step explanation:

no clue just copied someone else tehehe

Answer:

17.5 + 15.5

Step-by-step explanation:

17+ 15 = 32

.5 + .5 = 1

32 + 1 = 33

Answer:

15.5 and 17.5

Step-by-step explanation:

Let x and y be the two numbers

x+y = 33

x-y = 2

Add the two equations together

x+y = 33

x-y = 2

-----------------

2x = 35

Divide by 2

2x/2 = 35/2

x = 17.5

Substitute into

x+y = 33

17.5 +y = 33

y = 33-17.5

y = 15.5

Answer:

(3.442 ; 6.558)

Step-by-step explanation:

Given :

Mean score after patient is given the magnet treatment :

Mean score, xbar = 5

Standard deviation, s = 2.4

Sample size, n = 20

The confidence interval :

Mean ± margin of error

Margin of Error = Tcritical * standard error

The critical value at 95%, df = 20 - 1 = 19

Tcritical = 2.093 (T-student distribution)

The standard error = s/√n = 2.4 / √20 = 0.5367

The margin of error = 2.903 * 0.5367 = 1.558

The confidence interval :

Xbar ± Margin of error

5 ± 1.558

(3.442 ; 6.558)

Answer:

total price before sale = 20

total sale price = 5-original price

=5-20

= 15

mr randall bought 4 t-shirt =15×4=60

mr randall paid 60$ for the t-shirt

Answer:

Step-by-step explanation:

1)3/5

2)0.4

3)0.04

4)94/100 or 47/50

5)1-(0.4+0.35)=0.25->probality of taking a blue ball

0.35+0.25=0.6->probality of taking blue/red ball

6)a)0.01+0.03=0.04

b)1-0.01=0.99

7)a)0.5 b)0.3

8) a-i)0.3+0.25+0.2+0.2+0.1=1.05 probality should be <1

ii)0.05

b)0.45

ii)0.75

iii)0.2

Answer:

what are the phrases to choose from?

Step-by-step explanation:

Answer:

Your answer for the above equation is D

Answer:

None of these

Step-by-step explanation:

Corresponding, alternate interior, and same side interior angles only occur in a set of parallel lines. In figure f, none of the lines are parallel. Straight angles are defined as angles that make up one side of the line, or 180 degrees, and as the picture clearly shows, this is not the case.

Answer:

a.straight

b.corresponding

c.alternate interior

d.none of these

e.none of these

f.none of these

g.none of these

h.none of these

i.same side interior

Answer:

they increased by 25%

Step-by-step explanation:

16/4 = 4. 16+4 = 20. Because of this, the number of wins increased by 4, or 1/4 of last year's wins. this means it increased by 25%.