MATHEMATICS HIGH SCHOOL

PLSSSSSSSSSSSSSSSSSS IM TIMED What is the product of StartFraction 7 Over 9 EndFraction and One-fourth?StartFraction 7 Over 36 EndFraction
StartFraction 8 Over 36 EndFraction
StartFraction 7 Over 13 EndFraction
StartFraction 8 Over 13 EndFraction

Answers

Answer 1
Answer:

Answer:

7 over 36

Step-by-step explanation:
Answer 2
Answer:

Answer:

A

Step-by-step explanation:

Cuz 9x4=36 so thats your denomanator and 4x7=28 numerator for 28/36 but were not done yet, again 34 as a denomator and 9x1=9 so now u have 9/34!

HOPE I HELPED    

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What's substitution for y=4x-1;y=2x-5
What is -4 x 3 when 4 is negative??
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Two sets of quadratic expressions are shown below in various forms:Line 1: x2 − x − 6 (x + 2)(x − 3) (x + 0.5)2 − 6.25Line 2: x2 − x − 2 (x + 1)(x − 2) (x − 0.5)2 − 2.25Which line contains three equivalent expressions?

Can someone please help me, this is my last question I have been stuck on it for 30 minThe work of a student to solve a set of equations is shown:

Equation A: y = 15 − 2z
Equation B: 2y = 3 − 4z


Step 1: −2(y) = −2(15 − 2z) [Equation A is multiplied by −2.]
2y = 3 − 4z [Equation B]
Step 2: −2y = 15 − 2z [Equation A in Step 1 is simplified.]
2y = 3 − 4z [Equation B]
Step 3: 0 = 18 − 6z [Equations in Step 2 are added.]
Step 4: 6z = 18
Step 5: z = 3


In which step did the student first make an error?
Step1
Step 2
Step 3
Step 4

Answers

step 2
he didn't distribute
what he did:
-2(15-2z)=15-2z
that is obviously false

what should have happened is
-2(15-2z)=-30+4z
then add

-2y=-30+4z
2y=4-4z
0=-26
false
no solution
inconsitient, these lines ar paralell


anyway, step 2 is error
The mistake was made in step 2.  In simplifying the equation, he has to distribute the -2 through the parentheses.  Step 2 simplification should be

-2y = -30 + 4z

When the 2 equations are added, the resultant equation is 0 = -27 therefore it has no solution. 

A swimming pool is being drained for maintenance. The volume of water in the pool changes by −12 gallons every minute. What is the change in volume over 90 minutes? Enter the your answer in the box.

Answers

Answer:

Step-by-step explanation:

Answer:

-1080

Step-by-step explanation:

1 min = -12

90 min = 90 * (-12) = - 1080

Find the center (h,k) and radius of the circle with the given equation.
x^2+y^2-18x-2y+82=64

Answers

x^2+y^2-18x-2y+82=64 = (x-9)^2 + (y-1)^2 = 64 = 8^2

Center (9 , 1 )  radius = 8
x² + y² - 18x - 2y + 82 = 64
                             -82   -82
        x² + y² - 18x - 2y = -28

Four children have small toys. The first child has 1/10 of the toys, the second child has 12 more toys than the first, the third child has one more toy of what the first child has and the fourth child has double the third child. How many toys are there?

Answers

Call x the amount of toys the first child has.We write the equation x+(x+12)+(x+1)+2(x+1)=10x.This is equal to 5x+15=10x. Subtracting 5x, we see that 5x=15, so x=3. There are 10x toys, so we have 3*10=30 total toys.

A surveyor find that the cross section of the bottom of a circular pound has the shape of a parabola. The pond is 24 feet in diameter. The middle of the pond is the deepest part at 8 feet deep. At a point 2 feet from shore the water is 3 feet deep. How deep is the pond at a point 6 feet from shore?

Answers

Answer:

2.32 feet

Step-by-step explanation:

Given;

The cross section of the bottom of a circular pound has the shape of a parabola

Now,

For the circular parabola, the equation is given as:

y² = 4ax

here,

y is the depth

x is the horizontal distance from the center

a is the constant

also,

at diameter of the pond = 24 feet

and,

at x = 0 ; y = 8 feet

now,

the point 2 feet from the shore with respect to the center of the pond = radius of the pond - The distance from the shore

= \frac{\textup{24}}{\textup{2}} - 2 = 10 feet

thus,

at x = 10 feet ; y = 3 feet

thus,

we have

the equation as:

3² = 4a × 10

or

0.9 = 4a

or

a =  0.225

therefore,

we get the equation as;

y² = ( 4 × 0.225 ) × x

and, for point  6 feet away from the shore, i.e \frac{\textup{24}}{\textup{2}} - 6 = 6 feet away from the center

we have

y² = ( 4 × 0.225 ) × 6

or

y² = 5.4

or

y = 2.32 feet   (negative value is neglected as the depth cannot be negative)

Answer:

I wanna say 48 squared feet

Step-by-step explanation:

Solve for x. (Round to the nearest thousandth.)
3x - 8 = 15

Answers

Answer:x = 7.667

Step-by-step explanation:

3x - 8 = 15

     + 8 = 23

3x = 23

divide 3 by 3 and 23 so you get x by itself

answer = 7.667

Answer:

x = 7.667

Step-by-step explanation:

3x - 8 = 15 (Rearrange expression)

-8 - 15 = -3x (Combine like terms)

-23 = -3x (Divide)

x = 7.667
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