a parabolic lamp is facing due east. The bulb (located at the focus) is 8 inches away from the vertex (located at the origin). the lamp has a diameter of 20 inches. Which is the depth of the dish?

Answer:

1500

Step-by-step explanation:

1300

200

=1500

hope this helps

Answer:

you need to solve for x

Step-by-step explanation:

the ez way for me is by flipping it so now it is -(7-10)=x and 10 -7=3

Answer:

-7=3

Step-by-step explanation:

Hope this helps :D

Answer:

Obtuse Isosceles Triangle

Step-by-step explanation:

Answer:

I believe the answer is = 6,-6

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[tex] - \frac{1}{2} {n}^{2} + 18 = 0 \\ [/tex]

Subtract sides 18

[tex] - \frac{1}{2} {n}^{2} + 18 - 18 = - 18 \\ [/tex]

[tex] - \frac{1}{2} {n}^{2} = - 18 \\ [/tex]

Negatives simplifies

[tex] \frac{1}{2} {n}^{2} = 18 \\ [/tex]

Multiply sides by 2

[tex]2 \times \frac{1}{2} {n}^{2} = 2 \times 18 \\ [/tex]

[tex] {n}^{2} = 36[/tex]

Take √ of the sides

[tex] \sqrt{ {n}^{2} } = \sqrt{36} \\ [/tex]

[tex] |n| = 6[/tex]

[tex]n = ± \: 6[/tex]

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Answer:

60% x 25

55 % x 25

10 in english

25 is total and rest will be math

so 25-10 = 15

15 students failed math

Answer:

4

Step-by-step explanation:

Answer:

2°C

Step-by-step explanation:

5 × ( - 2 ) - 4 × ( - 3 ) = - 10 + 12 = 2

The temperature on the 5th day is 2°C .

9514 1404 393

Answer:

  $68.00

Step-by-step explanation:

Let s represent the opening price. Then the closing price is ...

  s - 3.25% × s = $65.79

  s(1 -0.0325) = $65.79 . . . . collect terms

  0.9675s = $65.79 . . . . . . . simplify

  s = $65.79/0.9675 . . . . . . .divide by the coefficient of s

  s = $68.00 . . . . . the opening stock price

Answer:

39.19

Step-by-step explanation:

sin(29°)=(19/x)

x= 19/sin(29°)

/= over

i used sin because it show opposite and hypoteneuse. which formula is SOH=sin opposite/ hypoteneuse

Step-by-step explanation:

circumference=

π*d

3.14x32

=100.48

Answer:

B is the answer

Step-by-step explanation:

Answer:

ima just say 10 and 6 my G I'm kinda dumb but u could try it

Answer:

5pt=10cups

24qt=6gal

Step-by-step explanation:

5*2=10

24/4=6

Answer:

= 23

Step-by-step explanation:

(5) (5) - 2 ( multiply )

= 5 * 5 = 25

( subtract ) 25 - 2 = 23

Answer:

Step-by-step explanation:

Since on each day 9 shells were found, and there are 7 days: 7 x 9 = 63

Number of shells found this summer: 63

Number of shells found fewer this year than last year: 152 - 63 = 89

Hence, Jon’s family found 63 fewer shells than last year

Jon’s family found 63 fewer shells than last year if last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

It is given that:

Last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

Let x be the number of shells they find this year than last year.

The value of x can be found as follows:

x = 152 - 7×9

x = 152 - 63

x = 89 shells

Thus, Jon’s family found 63 fewer shells than last year if last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

Learn more about the arithmetic operation here:

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Answer:

a.

Step-by-step explanation:

(2, 10) and (4, 10) have the same y value so it's not a function etc. etc.

Answer:

D. The relation represents y as a function of x, because each value of x is associated with a single value of y

Step-by-step explanation:

As long as no one x-value has two solutions, it can be considered a function. The x-values are {0, 2, 4, 6, 8}. Since there isn't any repetition, this can be considered as a function. The fact that 10 is repeated in the y-values doesn't affect that it is a function.

Answer:

2x + 5 = 3

Step-by-step explanation:

2x + 5 = x = -2 + 5

x = 3

Answer:

[tex]m=2[/tex]

General Formulas and Concepts:

Pre-Alg

Alg I

Step-by-step explanation:

Step 1: Define

Point (0, 7)

Point (4, 15)

Step 2: Find slope m

Answer: B.x = -22

x + 13 < 9

⇔ x < 9 - 13

⇔ x < -4

=> x ∈ {-∞; -4}

=> x = -22

Step-by-step explanation:

Answer:

Step-by-step explanation:

x + 13 < 9

x < - 4

(B). - 22

Answer:

y=-4x+1

Step-by-step explanation:

m=-4

h=1

Answer:

Step-by-step explanation:

b is the y intercept. Start with b. The graph shows that the point (0,b) is (0,1)

So far what you have is y = mx + 1

Now you have to deal with m

m = (y2 - y1)/(x2 - x1)

m = (1 - 0)/(0 - -1/2) = 1 /0.5 = 2      Use your calculator for this.

So the line is y = 2x + 1

As you move into the shaded area  y > 2x + 1

I reproduced the graph to show that pointed the arrow in the right way. You can try it to see if it works by trying a couple of points. y should work out to be greater than 2x + 1

Answer:

12:00 i think

Step-by-step explanation:

hope this helps

Answer: I don’t know, because strawberries are seen as good for dogs and it provides them with extra vitamin c. Maybe he/she just didn’t like it or it didn’t sit well in the stomach.

Answer: Sometimes a dog may be allergic to a certain food. Vomiting, diarrhea and skin problems may be symptoms of an allergic reaction. Consult your veterinarian if any of those occur. Introduce only one type of fruit at a time to your dog. Hope this helps... Stay safe and have a great weekend...

Plz mark me brainliest... Hope this is what you are looking for...

:D

Question:

You flip a fair coin ; What is P(heads)? If necessary, round your answer to 2 decimal places​

Answer:

[tex]P(Head) =0.50[/tex]

Step-by-step explanation:

Given:

A fair coin

Required

Determine [tex]P(Head)[/tex]

A coin has two faces (Head (1) and Tail (1) )

i.e. 1 head and 1 tail

Both of which have equal probability, which is calculated as follows:

[tex]P(Head) = P(Tail) = \frac{1}{1 + 1}[/tex]

[tex]P(Head) = P(Tail) = \frac{1}{2}[/tex]

[tex]P(Head) = P(Tail) = 0.5[/tex]

Hence:

[tex]P(Head) =0.50[/tex]

Answer: Its 0.50

Step-by-step explanation:

Answer:

Steak and Fish

Steak and Chicken

Fish and Chicken

Step-by-step explanation:

These are the possible choices:

Steak and Fish

Steak and Chicken

Fish and Chicken

You can double-check this by looking at each meat, and making sure it was paired with both other types of meat.

I Hope That This Helps! :)

Given:

Total number of friends = 5

Total cost of all five meals = $51.94

Sales tax = 6%

To find:

The cost of one meal before tax was added.

Solution:

Let x be the cost of all five meals before tax.

Then, Amount of tax = 6% of x

According to he question,

[tex]x+\dfrac{6}{100}x=51.94[/tex]

[tex]x+0.06x=51.94[/tex]

[tex]1.06x=51.94[/tex]

Divide both sides by 51.94.

[tex]x=\dfrac{51.94}{1.06}[/tex]

[tex]x=49[/tex]

So, the cost of all five meals before tax is $49.

Divide this cost by 5 to get the cost of one meal before tax was added.

[tex]\dfrac{49}{5}=9.8[/tex]

Therefore, the cost of one meal before tax was added, is $9.8.

14/2 = 7

7/2 = 3.5

3.5/2 = 1.75

1.75/2 = 0.875

9514 1404 393

Answer:

  15 meters

Step-by-step explanation:

Zeno's last jump was 2 meters, so another jump half as far adds 1 meter to the 14 m total.

After 4 jumps, Zeno would have jumped 15 meters from his starting place.

__

Comment on the question

The given distances give a total "after 3 jumps." The question asks for a total "after 4 jumps." It is not clear whether that is 4 jumps total, or 4 more jumps. In the above, we have assumed it is 4 jumps total.

                                                  (17)

Answer:

[tex]h(-6) = -457[/tex]            

Step-by-step explanation:

Given the function

[tex]h(x)= 72 x-25[/tex]

Put [tex]h = -6[/tex] to in the function

[tex]h(x)= 72 x-25[/tex]

[tex]h\left(-6\right)=\:72\left(-6\right)-25[/tex]

           [tex]=-432-25[/tex]

           [tex]=-457[/tex]

Therefore,

[tex]h(-6) = -457[/tex]                            

                                                   (18)

Answer:

[tex]g(2)=25[/tex]            

Step-by-step explanation:

Given the function

[tex]g\left(x\right)\:=\:5x^2\:+\:4x\:-\:3[/tex]

[tex]g\left(2\right)\:=\:5\left(2\right)^2\:+\:4\left(2\right)\:-\:3[/tex]

        [tex]= 20 + 8 - 3[/tex]

        [tex]= 25[/tex]

Therefore,

[tex]g(2)=25[/tex]

The Answer is: The hourly rate option of $112 is higher than the commission rate of $105.

Step-by-step explanation:

She will work 16 hours at $7.00 per hour:

16 * 7 = $112

Or she could take the 5% commission on $2,100:

2100 * .05 = $105.

The hourly rate is higher than the anticipated commission amount.

Answer:6 ture    7 false         8 true                                                                                                     Step-by-step explanation:

The answers you have selected i believe are correct

Step-by-step explanation:

6) True

7) False

8) True

Answer:

3

Step-by-step explanation:

Answer:

55

Step-by-step explanation:

the value of the expression 5y² + 4x when x = 2.5 and y = 3 will be 55.

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given an expression 5y² + 4x

To calculate the value of expression at x = 2.5 and y = 3

Substitute the value of x and y in the expression:

=> 5y² + 4x

=> 5* 9 + 4 * 2.5

=> 45 + 10

=> 55

therefore, 55 is the value of the expression 5y² + 4x when x = 2.5 and y = 3.

Learn more about expression here:

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