MATHEMATICS
HIGH SCHOOL

Answer: A) The quadratic equation is:

which is of the form

Let's analyze the radicand:

The radicand is zero: this means that the equation has 2 coincident solutions.

We can find them by using the formula:

So, the solution is x=-0.2 with multiplicity 2.

b) The equation is

Note that the radicand is zero again, as before:

So we have two coincident solutions as before. We can find them using the same formula:

So, the solution is x=0.5 with multiplicity 2.

which is of the form

Let's analyze the radicand:

The radicand is zero: this means that the equation has 2 coincident solutions.

We can find them by using the formula:

So, the solution is x=-0.2 with multiplicity 2.

b) The equation is

Note that the radicand is zero again, as before:

So we have two coincident solutions as before. We can find them using the same formula:

So, the solution is x=0.5 with multiplicity 2.

MIDDLE SCHOOL

Solve for u.

26= -12u-9+7u

Simplify your answer as much as possible.

Turn equation around:

7u-9-12u=26

Combine like terms:

-12u+7u=-5u

This turns equation into:

-5u-9=26

Add -9 to both sides:

-5u-9=26

+9=+9 - and + cancel out

-5u=35

Divide by -5 to get “u” by itself:

-5u=35

———— -5 And -5 cancel making

-5 =-5 “u” By itself

u= -7

Hope this helps!

7u-9-12u=26

Combine like terms:

-12u+7u=-5u

This turns equation into:

-5u-9=26

Add -9 to both sides:

-5u-9=26

+9=+9 - and + cancel out

-5u=35

Divide by -5 to get “u” by itself:

-5u=35

———— -5 And -5 cancel making

-5 =-5 “u” By itself

u= -7

Hope this helps!

HIGH SCHOOL

Geometry: (properties of rhombi)

diagonals ____ opposite ____

Diagonals intersect each other at 90 ' .all sides are equal

MIDDLE SCHOOL

Simplify 15(5b+3)

Please help me I don't understand at all

The final result is: 75b + 45.

MIDDLE SCHOOL

Sally is going furniture shopping using her credit card. If her credit card has a limit of 2,000 and she is currently holding a balance of 763, how much can she afford to spend on furniture

Answer:

1237

Step-by-step explanation:

2000 - 763

Answer: $1,237

Step-by-step explanation: 2,000-763=1,237

MIDDLE SCHOOL

A town has a population of 17000 and grows at 2.5% every year. To the nearest year how long Will it be until The population will reach 23600

Answer:

almost 15.5 years

Step-by-step explanation: let the population will be reached in t years

17000+(17000x2.5%xt) = 23600

or, 17000 x (1+ 2.5% x t) = 23600

or, 1+ 2.5% x t = 23600/17000

or, 1+ 2.5% x t = 236/170

or, 2.5% x t = 236/170 - 1

or, 2.5% x t = 66/170

or, t = 66/(170 x 2.5%)

t= 15.529

MIDDLE SCHOOL

You go to an arcade to play games. This table shows the amount of money spent at the arcade.

Number of games played(x) 0 10 15 20

Amount of money spent

512

$16

What is the equation in standard form that

represents the total amount of money spent

over the night?

Form:

Plz help need ASAP 100 points and brainliest

y-y1=m(x-x1)

y-10=512(x-0)

Answer:

i got this answer

y-y1=m(x-x1)

y-10=512(x-0)

MIDDLE SCHOOL

8. - .5 (12p - 42) = -33

Answer:

x+

Step-by-step explanation:

COLLEGE

the length of a rectangle is 100 centimeters and it's perimeter is greater than 400 cm write an inequality to find width of the rectangle

Answer:

200+2w>400 and w>100.

Step-by-step explanation:

The perimeter of a rectangle can be found using 2*l + 2*w = P. If the length is 100 cm then 2(100)+2w > 400. Simplified this is 200+2w>400.

You can solve for the width and you find

200+2w>400

2w>200

w>100.

COLLEGE

A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is +1 standard deviation away from the mean.

Answer:

53.3

Step-by-step explanation:

Add one standard deviation to the mean:

45 +1(8.3) = 53.3

Answer:

53.3

Step-by-step explanation:

+1 standard deviation away from the mean is 45+1(8.3)