plzzzz help!!!! Im so confused!

Answer:

y = 6.93

Step-by-step explanation:

Given the Vertex and ficuas of a parabola as :

Vertex (0,0) ; focus(0,2) ; depth = 5 inches

Width of parabolic heater at its widest point :

General equation of a parabola:

4p(x - h) = (y - k)²

(h, k) = Vertex

hence,

h =0 ; k = 0 ; p = 2 ; x = 5

(y - k)² = 4p(x - h)

(y - 0)² = 4*2(6 - 0)

(y-0)(y-0) = 8(6 - 0)

y² = 48 - 0

y² = 48

y = 6.928

y = 6.93

Answer:

8.33,236.67

Step-by-step explanation: im hard but i got it right

Answer:

IV

Step-by-step explanation:

Answer:

The answer is 3

Step-by-step explanation:

I used M&thWay

Answer:

a=1

Step-by-step explanation:

Answer:

The answer is -3<x≤2

Answer:

25

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

braniest pls

Easy

[tex] \frac{11}{25} \times 100 = \frac{11}{25} \times 25 \times 4 \\ [/tex]

[tex] = 11 \times 4 = 44 \: \: percent[/tex]

So %44 of your class students chose pizza.

The percentage of the class chose pizza = 44%

"It is a number or ratio that can be expressed as a fraction of 100."

For given example,

Total number of students = 25

the number of students who chose pizza as their favorite food = 11

So, the percentage of the class chose pizza would be,

⇒ (11/25) × 100 = 44%

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Answer: half a lap would take 45 seconds

Step-by-step explanation:

The equation for the number of beats per minute is 55 beats per minute

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total number of beats be = A

Now , the value of A = 220 beats

The total time required for Sam to have 220 beats = 4 minutes

So , the number of beats of Sam in 1 minutes is calculated by

The equation will be

The number of beats of Sam in 1 minutes is = total number of beats  / total time required for Sam to have 220 beats

The number of beats of Sam in 1 minute is = 220 / 4

The number of beats of Sam in 1 minute is = 55 beats per minute

Therefore , Sam would have 55 beats every minute or 55 beats per minute

And for the period of 4 minutes , Sam would have

Number of beats for 4 minutes = number of beats of Sam in 1 minute x 4

Number of beats for 4 minutes = 55 x 4

Number of beats for 4 minutes = 220 beats in 4 minutes

Hence , The equation for the number of beats per minute is 55 beats per minute

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Answer:

31 minutes

Step-by-step explanation:

Here, we have 8 competitors with the previous runner outrunning the present by 9 seconds

1st runner time = 4 minutes 37 seconds

2nd runner time = 4 minutes 37 seconds - 9 seconds = 4 minutes 28 seconds

3rd runner time = 4 minutes 28 seconds - 9 seconds = 4 minutes 19 seconds

4th runner time = 4 minutes 19 seconds - 9 seconds = 4 minutes 10 seconds

5th runner time = 4 minutes 10 seconds - 9 seconds = 4 minutes 1 second

6th runner time s= 4 minutes 1 second - 9 seconds = 3 minutes 52 seconds

7th runner time = 3 minutes 52 seconds - 9 seconds = 3 minutes 43 seconds

8th runner time = 3 minutes 43 seconds - 9 seconds = 3 minutes 34 seconds

The total time is the addition of all the times

For clarity sake, we shall be adding all the minutes together and all the seconds together;

That will be ;

(4 * 6) + 3 minutes + ( 34 + 43 + 52 + 1 + 10 + 19 + 28 + 37)

= 27 minutes + 224 seconds

We need to convert 224 seconds to minutes

Since 60 seconds make one minute; we have

224 - 60(3) = 3 minutes and 44 seconds

Let’s add this to the minutes we had before

That would be;

27 minutes + 3 minutes + 44 seconds

= 30 minutes 44 seconds

since 44 seconds is greater than 1/2 minute (30 seconds), we can approximate it to 1 minute

So the total time is 30 minutes + 1 minute = 31 minutes

Answer:

The estimated percentages i could think of were 2/9, 1/3, 23/90, 20/90

Step-by-step explanation:

estimates include rounding. So i rounded to the nearest fractions and picked out the best ones.

Answer:

26%

Step-by-step explanation:

23/90×100= 26%

note: thanks would be appreciated. thank you!

Answer:  D = r*t + r*t   372 3/4 = (63 * 2 3/4) + (57 * 3 1/2)

  OR

D1 + D2 = Total  173 1/4 + 199 1/2 = 372 3/4

D1 = r1 *t1       63 * 2 3/4 = 173 1/4

D2 = r2 * t2      57 * 3 1/2 = 199 1/2

Step-by-step explanation:

The trip is in two segments, so calculate the distance driven in each portion, then add the two distances together to get the total.

Another way to write the expression would be  D = r*t + r*t  

The total distance that Wendy drove to Cleveland will be 372.75 miles.

For the first 2 3/4 hours of her trip, she drove an estimated 63 mph. Then, the distance traveled will be:

= 63 × 2 3/4

= 173.25 miles.

For the second portion of her trip, which took her 3 1/2 hours, she drove at an estimated rate of 57 mph, the distance will be:

= 57 × 3 1/2

= 199.5 miles

The total distance traveled will then be:

= 173.25 miles + 199.5 miles

= 372.75 miles.

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Answer:

D, (13, 4.5)

Step-by-step explanation:

(question asked for midpoint so my bad if this isnt what you wanted)

to calculate the median of a vector, you would have to do a simple calculation to get the answer

for the x coordinate, (9 + 17) / 2 would be 13

for the y coordinate, 5 + 4 / 2 would be 4.5

combining those would give you the answer (13, 4.5)

Answer:

34 +x = 42

x = 42- 34

= 8

is the right answer

Answer:

8

For this problem, subtract 34 from 42.

42 - 34 = 8.

You get the number 8.

It will be your answer. Hope this helps!

Answer:

Which points are collinear?

G, A, and T

G, E, and T

A, T, and E

G, A, and E

Step-by-step explanation:

that what i nkow sorry

Answer:

2 complex roots

2 positive real roots

0 negative real roots

Brainliest please?

Answer:

The missing statement is 9x = 61

Step-by-step explanation:

R2. is Addition Property of Equality.

R3. is Distribution Property

R5. is Divisin Property of Equality.

I hope this helps you, I haven't done this for quite some time. Sorry it took me just now to find your question.

Answer:

She spends 19.53$ each month

Step-by-step explanation:

7*2.79 is 19.53, so that means she spent that much a month

Answer:

-13

Step-by-step explanation:

when you calcute -7and 6 you get -13

Answer:

y= -3/5x+5

Step-by-step explanation:

im not sure if this is right but i know that perpendicular means opposite so basically just swtich the slope and if its positive make it negative, vice versa

Answer:

2/3

Step-by-step explanation:

The absolute value of a negative number will switch to a positive when the indicators are removed.

Answer:

Step-by-step explanation:

let the first angle be 5x

second be 4x

and third be 1x

as we know that by adding all the sides of triangle we get 180°

therefore  ,

5x+4x+1x=180°

10x=180°

hence ,  

x=18°

first angle - 18*5 = 90°

second angle - 18*4=72°

third angle - 18°

HOPE THIS HELPS YOU !!!

Answer:

18°, 72°, 90°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

sum the parts of the ratio, 5 + 4 + 1 = 10 parts

divide to find the value of one part of the ratio

180° ÷ 10 = 18° ← value of 1 part of the ratio , thus

5 parts = 5 × 18° = 90°

4 parts = 4 × 18° = 72°

Thus the angles of the triangle are 18°, 72° and 90°

Answer:B

Step-by-step explanation:

Answer:

6y - 48

Step-by-step explanation:

6 times y its 6y

6 times -8 is -48

You cannot solve further without knowing the variable

Answer; 6y−48

Step-by-step explanation:

Answer:

x=100

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

7+1

=8

8*2

=16

Answer:

sorry , but where is the question?

Answer:

I think I did my math right. Is it 11? If it's not I tried to help.

Step-by-step explanation:

Answer:

X=-8

Step-by-step explanation:

2 #7&"8*_8-*'7&-$(7

X<-8

On the number line, put the dot at -8 and shade to the left.