Please answer this
simplify too

Answer:

D(t)=-2sin(pi/2 t)+5

Step-by-step explanation:

i did it on Khan academy

Answer:

-2sin(pi/2 t)+5

Step-by-step explanation:

ALso did on Khan Academy (its on the sinisoidal equations excercise)

Answer:

< PRS and < PRT are congruent supplementary angles.

Step-by-step explanation:

the ''math student'' was wrong. When two lines form to create a 90 degree angle (right angle) they are perpendicular. Angles can be perpendicular. BUT

  Supplementary angles are two angles that measure up to 180 degrees.

Hope this helps!

Answer:

Congruent adjacent angles that form a linear pair are right angles.

Step-by-step explanation:

Congruent adjacent angles that form a linear pair are right angles.

Step-by-step explanation:

This is true statement.

have a great day

Answer:

{ -2,-1,0,1}

Step-by-step explanation:

The domain are the values for the input

Domain { -2,-1,0,1}

Answer:

$11.23

Step-by-step explanation:

A) 500 +  4(.06*500)

[tex]500+4\left(0.06\cdot \:500\right)=620[/tex]

B) [tex]500\cdot \:1.06^4=631.23848[/tex]

Answer:

Hello,

[tex]\begin{bmatrix}-2&2\\3&5\\\end{bmatrix}\\\\[/tex]

Step-by-step explanation:

[tex]\begin{bmatrix}2&3\\5&7\end{bmatrix}-A=\begin{bmatrix}3&1\\-2&-3\end{bmatrix}+\begin{bmatrix}1&0\\0&1\end{bmatrix}\\\\\\\begin{bmatrix}2&3\\5&7\end{bmatrix}-A=\begin{bmatrix}2&3\\5&7\end{bmatrix}-\begin{bmatrix}4&1\\-2&-2\end{bmatrix}\\\\\\A=\begin{bmatrix}-2&2\\3&5\end{bmatrix}\\\\[/tex]

Answer:

42 milliters of compound B are needed......Actually I am not sure hope this may urr answer....

Answer:

-3-9

Step-by-step explanation:

+(-) = -

Answer:

5×[4×(2+3+2)]

Step-by-step explanation:

they will run 2 miles moday, 3 wednesday,  2 on friday so add it up and you get how many they will run for a week

there is 4 weeks, so mutiply by 4

there are 5 members so you mutiply by 5 as well

Answer:

25/60

Step-by-step explanation:

Numerator = n

[tex]\frac{n}{2n + 10} = \frac{5}{12}[/tex]

Cross multiply:

n * 12 = (2n + 10) * 5

12n = 10n + 50

12n - 10n = 10n + 50 - 10n

2n = 50

n = 25

Fraction = [tex]\frac{25}{60}[/tex]

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

25/60

Step-by-step explanation:

Study Island:)

please mark this answer as brainlist

Answer:

B

Step-by-step explanation:

f(x) = 2x^2 - 4x + 5                   Put brackets around the first 2 terms.

f(x) = (2x^2 - 4x) + 5                 Take out the common factor of 2

f(x) = 2(x^2 - 2x) + 5                 1/2 the second term and square.

f(x) = 2(x^2 -2x + (2/2)^2) + 5   Express brackets as a perfect square.

f(x) = 2(x - 1)^2 + 5                     Multiply 2 * 1 (the term without an x. Subtract.

f(x) = 2(x - 1)^2 + 5 - 2                Combine

f(x) = 2(x - 1)^2 + 3

Answer:

9 and 15

Step-by-step explanation:

9 10 11 12 13 14 15

Answers:

a = 3

b = 3

c = -6

=====================================

Explanation:

The roots are x = 1 and x = -2. This leads to the factors x-1 and x+2 respectively.

This is because something like x = 1 becomes x-1 = 0 after subtracting 1 from both sides. For x = -2, we add 2 to both sides getting x+2 = 0.

The factorization is y = a(x-1)(x+2)

Plug in (x,y) = (2,12) and solve for 'a'

y = a(x-1)(x+2)

12 = a(2-1)(2+2)

12 = a(1)(4)

12 = 4a

12/4 = a

3 = a

a = 3

So we have y = a(x-1)(x+2) update to y = 3(x-1)(x+2)

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

The last thing we need to do is expand everything out (use the FOIL rule then distributive rule) to get the equation into standard form

y = 3(x-1)(x+2)

y = 3(x^2+2x-1x-2)

y = 3(x^2+x-2)

y = 3x^2+3x-6

Comparing this to y = ax^2+bx+c shows that:

a = 3

b = 3

c = -6

The graph is below.

Answer: Choice D

0.135, 1.35, 1.352, 13.5

=====================================================

Explanation:

Ascending order means "smallest to largest"

The smallest item is 0.135, then we move to 1.35, then to 1.352, and finally 13.5

The reason why 1.35 is smaller than 1.352 is to think of the first value is 1.350; then note how 350 is smaller than 352.

Answer:

62034.74

Step-by-step explanation:

Answer:

62034.74  use a converter

Step-by-step explanation:

[tex]\\ \sf\longmapsto 7x + 2y {}^{3} - 4xy + 3x - 2xy {}^{3} + 7xy + 2xy - 5x + {6y}^{3} \\ \\ \sf\longmapsto 2y {}^{3} + 6 {y}^{3} - 2xy {}^{3 } + 7x + 3x - 5x - 4xy + 7xy + 2xy \\ \\ \sf\longmapsto 8y {}^{3} - 2xy {}^{3} + 5x + 5xy \\ \\ \sf\longmapsto 2y {}^{3} (4 - x) + 5x(1 + y)[/tex]

Answer:

1

Step-by-step explanation:

f(n) = 3n

f(1/3)= 3*(1/3)=1

f(1/3)=1

Answer:

3

Step-by-step explanation:

Plugin n = 1/3

f(n) = 3n

 [tex]f(\frac{1}{3})=3*\frac{1}{3} = 3[/tex]

Answer:

The distribution is positively skewed.

Step-by-step explanation:

It's not symmetric because the distribution in the chart isn't equally shown or marked. It's not negative skewed either because for it to be negative the graph would have to go down in a negative direction, usually the left, but in the picture you posted the graph is going down in the right direction. Lastly, positively skewed graphs or charts look like the one you posted. They go down in the right direction, hence why they're called "positively" skewed. The right tail of the distribution is longer in positively skewed graphs or charts.

Answer:

f(x)^-1(x) =sqrt(x+5) -6

Step-by-step explanation:

f(x) = (x + 6)^2 - 5

y =  (x + 6)^2 - 5

Exchange x and y and solve for y

x = (y + 6)^2 - 5

Add 5 to each side

x+5 =  (y + 6)^2 - 5+5

x+5 =  (y + 6)^2

Take the square root of each side

sqrt(x+5 )= sqrt( (y + 6)^2 )

sqrt(x+5 )=(y + 6)

Subtract 6 from each side

sqrt(x+5 ) -6=y + 6-6

sqrt(x+5) -6 = y

Answer:

Could you Write the question more clearly?

Step-by-step explanation:

Answer:

SSS postulate

Step-by-step explanation:

its probab;py wrong im sorry

Answer:

SSS Postulate

Step-by-step explanation:

Since both triangles have 3 congruent sides, then

The triangles are congruent by the SSS postulate

Add the ratio: 3 + 5 = 8

Divide total students by that:

32/8 = 4

The ratio for girls is 3, multiply the 4 by 3:

4 x 3 = 12

There are 12 girls

Answer:

12

Step-by-step explanation:

If the ratio of girls to boys is 3:5, that means that for every 8 total students, 3 would be girls and 5 would be boys. Therefore 3/8 of the students are girls and 5/8 are boys. If 3/8 are girls, then:

[tex]\frac{3}{8}[/tex] of 32

= [tex]\frac{3}{8} * 32[/tex]

[tex]=\frac{3 * 32}{8} \\= \frac{96}{8} \\= 12[/tex]

There are 12 girls.

Answer:

Step-by-step explanation:

Answer:

By applying intersecting chords angle theorem:-

[tex]m\angle BPD= 106[/tex]° [tex]=1/2(BD+AC)[/tex]

[tex]=1/2(146+66)[/tex]

[tex]=1/2\time(212)[/tex]°

[tex]m\angle BPD=106[/tex]°

Answer:- D) 106°

OAmalOHopeO

Answer:

-23 = - 23

Step-by-step explanation:

there you go...hopefully it makes sense :)

Answer:

You don't have the number line image attachment...or at least i cant see it. If you send a picture or link it I would be more than happy to help you.

Step-by-step explanation: