What is the radius of a circle with an area of 78. 5 square inches? Use 3. 14 for pi. Enter your answer in the box.

Answer:

35

Step-by-step explanation:

By the triangle midsegment theorem, 2(WY)=VZ.

So, 2(p-21)=p-7, meaning p=35.

Answer:

C

Step-by-step explanation:

I usually solve these problems by process of elimination, but you can solve these differently!

A. y=1/2x. This would basically mean to divide x by 2 to get y. We can see 2/2=1, 4/2=2, 6/2=3, and 8/2=4. This does not match up with the table, where the numbers are 1, 5, 9, and 13. 1, 5, 9, and 13 are not equal to 1, 2, 3, and 4. So A is not our answer.

B. y=x-1. This would mean to subtract 1 from x to get y. 2-1=1, 4-1=3, 6-1=5, and 8-1=7. This does not match up with the table. 1, 3, 5, and 7 is not equal to 1, 5, 9, and 13.

C. y=2x-3. This would mean we would multiply 2 by x and subtract 3 to get y. 2*2-3=1, 2*4-3=5, 2*6-3=9, and 2*8-3=13. 1, 5, 9, and 13 are equal to 1, 5, 9, and 13, so this will be our answer.

D. y=3x-5. This would mean we would multiply 3 by x and subtract by 5. 3*2-5=1, 3*4-5=7, 3*6-5=13, and 3*8-5=21. This is not equal to 1, 5, 9, and 13.

Answer:

46.75 dollars and 13 + 0.75s = x

Step-by-step explanation:

13+.75S=Monthly payment

13+.75(45)=46.75

If he downloaded 45 songs he would pay 46.75 dollars

If he downloaded S songs he would pay 13 + 0.75s = x

Answer:   [tex]\frac{-m^2+n^2}{2}[/tex]

If the font is too small, it says (-m^2+n^2)/2

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

Explanation:

If you plug x = 0 into the original expression, then you'll get the indeterminant form 0/0 after simplifying.

Recall that cos(0) = 1

So we use L'Hospitals rule to derive the numerator and denominator separately (don't use the quotient rule)

[tex]\displaystyle \lim_{x\to0} \frac{\cos(mx)-\cos(nx)}{x^2}\\\\\\\displaystyle \lim_{x\to0} \frac{-m\sin(mx)+n\sin(nx)}{2x}\\\\\\[/tex]

Plug x = 0 into this new expression. You should get 0/0 again here as well, which means you'll have to do another round of L'Hospital

[tex]\displaystyle \lim_{x\to0} \frac{-m^2\cos(mx)+n^2\cos(nx)}{2}\\\\\\[/tex]

Now plugging in x = 0 leads to something that isn't indeterminant

Evaluating the limit gets us

[tex]\displaystyle \lim_{x\to0} \frac{-m^2\cos(mx)+n^2\cos(nx)}{2}\\\\\\=\frac{-m^2\cos(m*0)+n^2\cos(n*0)}{2}\\\\\\= \frac{-m^2+n^2}{2}\\\\\\[/tex]

Answer:

The probability of getting exactly iblue is [tex]\frac{5}{9}[/tex]

Step-by-step explanation:

[tex]from\ the\ given\ condition.[/tex]

[tex]We\ only\ have\ two\ way.[/tex]

[tex]One\ way\ is\ the\ first\ one\ take\ the\ blue.[/tex]

[tex]one\ but\ the\ second\ one\ take\ red.\ one.[/tex]

[tex]Another\ way\ is\ the\ first\ one\ take\ the\ red.[/tex]

[tex]one\ but\ the\ second\ one\ take\ the\ blue.[/tex]

[tex]one.[/tex]

[tex]so.\ P_1=\frac{4}{9}\times\frac{5}{8}=\frac{5}{18}[/tex]

[tex]P_2=\frac{5}{9}\times\frac{4}{8}=\frac{5}{18}[/tex]

[tex]so.\ we\ have\ p=p_1+p_2=\frac{5}{18}+\frac{5}{16}=\frac{5}{9}[/tex]

I hope this helps you

:)

Answer:

C,F

Step-by-step explanation:

Answer:

500 - 200 = 300. 300 ÷ 15 = 20. Jacob needs 20 hours of pay for the dresser

If f(x) = -4x - 5 and g(x) = 3 - X,the value g(-4) + f(1) is equal to -2.

The function f(x)  is  f(x)=-4x-5

The function  g(x) is g(x)=3-x

g(-4)=3-(-4)=3+4=7

f(1)=-4(1)-5=-9

g(-4)+f(1)=7+(-9)=7-9=-2

What is the composition of functions?

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Answer:

D. 20 in

Step-by-step explanation:

Answer:

its c (4,1)

Step-by-step explanation:

The required point for the given line is (0, -3). The correct option is (D).

A linear equation in two variable has the general form as y = ax + by + c, where a, b and c are integers and a, b ≠ 0.

It can be represented as a straight line on a graph.

The equation of the given line is y = 2x - 3.

In order to find the point lying on it, consider each of the options one by one as follows,

(a) (2 , 3)

Substitute x = 2 and y = 3 in the given equation to obtain LHS and RHS as,

LHS = y

       = 7

RHS = 2x - 3

       = 2 × 2 - 3

       = 1

Since, LHS ≠ RHS, the given point is not the solution.

(b) (-2, -1)

Substitute x = 2 and y = 3 in the given equation to obtain LHS and RHS as,

LHS = y

       = 7

RHS = 2x - 3

       = 2 × -1 - 3

       = -6

Since, LHS ≠ RHS, the given point is not the solution.

(c) (4, 1)

Substitute x = 2 and y = 3 in the given equation to obtain LHS and RHS as,

LHS = y

       = 4

RHS = 2x - 3

       = 2 × 1 - 3

       = -1

Since, LHS ≠ RHS, the given point is not the solution.

(d) (0, -3)

Substitute x = 2 and y = 3 in the given equation to obtain LHS and RHS as,

LHS = y

       = -3

RHS = 2x - 3

       = 2 × 0 - 3

       = -3

Since, LHS = RHS, the given point is the solution.

Hence, the point (0, -3) is the solution of the given equation.

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Answer:

z>7

Step-by-step explanation:

subtract z from both sides, then subtract 8 from both sides. The, divide both by the -5 (and remember to flip the sign since you divided by a negative number).

(−3.7x)(5.1y)

= −18.87xy

Answer:

This one

Step-by-step explanation:

The graph of the function y + 3 = |x - 5| is the first diagram given in the options.

A modulus function always outputs positive numeric value irrespective of the sign of the input.

According to the given question we have to determine the graph of             y + 3 = | x - 5 |.

So, y + 3 = | x - 5|

y = | x - 5 | - 3.

Now to obtain the vertex of the graph we'll set x -5 = 0 .

x = 5 and that corresponds to y value of -=3.

So, the vertex of the graph is (5,-3).

Now to plot the function we'll select some values of less than and greater than 5.

When x = 2 , y = 0. x = 4 , y = 2. x= 6 , y = -2. x = 8 y = 0.

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Answer:

I believe there are 21 ducks and 14 pigs in the field

Step-by-step explanation

x+y=35

2x+4y=98

2x+2y=70

2x+4y=98

-2y=-28

y=14

x+14=35

x=35-14

x=21

21=ducks

14=pigs

Answer:

you put the -3 where the x's are

Step-by-step explanation:

f(x)= -2(-3)^2 - 3(-3) + 6

i think i hope thats right

Answer:

Plug in -3 into all the x's are

Step-by-step explanation:

f(x)= -2(-3)²-3(-3)+6

Answer:

3

Step-by-step explanation:

1 kg = 2.2 pounds ( rounded to the nearest tenth)

500 kg x 2.2 = 1,100 pounds

1100 pounds is less than 2,500 so the forklift can lift it.

Answer:

2,500= 1133.981

Step-by-step

The answer is 1133.981 bc you would have to use the conversion rate of lb to kg, so just 2500 lb × 0.45359237

= 1133.980925 kg

0.45359237  this is the conversion rate therefore 1134 is the answer (was rounded)

Step-by-step explanation:

A

Because the multiplication of two integers still results in an integer.

Answer:    ∠B = 42°   ∠A = 23°  ∠F = 115°

Step-by-step explanation:

∠B≅∠C  alternate interior angles  42°

  ∠CDF is supplementary to ∠CDE,

so m∠CDF = 23°  and ∠FAB≅∠CDF so m∠FAB= 23°

also ∠A ≅ CDE  corresponding angles  157° ∠FAB is suplementary to ∠A

so 180 - 157 = 23 gives the m∠FAB

The sum of the angles of a triangle is 180°, so m∠AFB = 180 -(23 +42)

180- 65 = 115 = m∠F

Answer:

B.{5}

Step-by-step explanation:

2-8x-42=0

(÷2), we get,

1-4x-21=0

-4x-20=0

-4x=20

x=20÷(-4)

x=(-5)

since the question asks for a positive set, the answer is [x=5]

The positive solution set is D. {7}.

A set is a well defined collection of objects written by commas and closed by second brackets.

According to the given question the equation 2x² - 8x - 42 = 0 have two factors and we have write the positive factor in form of a set.

2x² - 8x - 42 = 0

x² - 4x - 21 = 0

x² -7x + 3x - 21 = 0

x(x-7) + 3(x - 7) = 0

(X+3) = 0 OR (x-7) = 0

x = -3 OR x = 7.

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Answer:

2: decrease by 3

3: double total previous number

4: divide by haf of previous total

Step-by-step explanation:

2: decrease by 3

3: double total previous number

4: divide by haf of previous total

Have an amazing day!!

PLEASE RATE!!

x = 4

Step-by-step explanation:

21x + 6 = 90°

21x = 90 - 6

21x = 84

x = 84/21

x = 4

Answer:

15 inches is needed of ribbon

Answer:  Required system:

x+y+z=30

x+2y+3z = 46    

x= 2y+2z      

Step-by-step explanation:

let x=  Number of pounds of bananas

y = Number of pounds of guavas

z = Number of pounds of dragon fruit

According to the question,

x+y+z=30     (i) (total fruits bought = 30 pounds)

Bananas cost $1 per pound; guavas cost $2 per pound; and dragon fruit costs $3 per pound and total cost = $46.

∴ x+2y+3z = 46         (ii)

Also, weight of the bananas= 2 (weight of the guavas+ weight of dragon fruit)

∴ x = 2(y+z)

⇒x= 2y+2z       (iii)

from (i), (ii) and (iii)

x+y+z=30

x+2y+3z = 46    

x= 2y+2z      

are the equations for the required system.

Answer:

(9,-2)

Step-by-step explanation:

5 is the x coordinate, and 4 is the y coordinate. When you go right a certain amount of units, you add those units to your x coordinate. If you were to go left a certain amount of units, you'd subtract them. Since we're going right, 5 + 4 = 9. When you go up a certain amount of units, you add those units to you y coordinate. If you were to go down a certain amount of units, you'd subtract them.  Since we're going up, -6 + 4 = -2. So, x = 9 and y = -2, or (9,-2)

Answer: 5 more times.

Step-by-step explanation: In total, it takes her 4 minutes to climb to the top of the water slide and slide down.  Because the water slide closes in 20 minutes, she can slide down more 5 times.  5 x 4 equals 20.

Have a great day! :)

Answer:

I believe you already selected the correct answer in the picture

Answer: 9 units

Step-by-step explanation: