Mathematics High School

Find the sale price of a $15 item after a 20% discount.

Answers

Answer 1

Answer:

12

Step-by-step explanation:

find 20% of 15 and then take that away from the 15

Answer 2
What you would do is X/15 and 20/100 Now cross multiply so x100 = 15 x 20 15 x 20 = 300, but you need to have x by it self so 300/100 = 3

Hope I said everything right and make sure to double check my math. Have a great day!

Related Questions

please help asap!!!!

Answers

Answer:

12                                        

Step-by-step explanation: 60

what is 4x+3x-12+1x

Answers

Answer:

8x-12

Hope it helped plz mark me brainliest PlzPlz

Answer:

8x-12

Step-by-step explanation:

You need to find a number/numbers that have the same variable if the variable is the same then you can add or subtract them

You can add 4x, 3x and 1x

4x plus 3x plus 1x is 8x

Since -12 is alone you can leave it as it is

8x-12

Carmen has an average of 8 on two 10-point math quizzes. If she scored 10 on the third quiz, what is true of Carmen's average score on all three quizzes?

Answers

Answer:

9

Step-by-step explanation:

Quadrilateral WXYZ is a rectangle. Diagonals WY and ZX intersect at P. If PY=3x−5 and WP=2x+11, find the value of ZP.

ZP=43

ZP=25

ZP=16

ZP=66

Answers

Answer:

The right answer is ZP = 43

Step-by-step explanation:

I just took the quick check

Point Q′ is the image of Q(5, –3) after a translation down 2 units and right 4 units. What are the coordinates of Q′?

Answers

Answer:

9,-5

Step-by-step explanation:

imagine the coordinate on a graph

if it helps draw a graph

It costs $3.60 to buy one lb of candy. How much would it cost to purchase 5 lbs of candy?

Answers

33$ because 3.60•5lbs= 33$

Answer:

18$

Step-by-step explanation:

The answer is 18$ because you multiply 3.60$ by 5 lbs

For what value of x do the expressions
2x+3 and 3x +1 have the same value?

Answers

Set the expressions equal to each other:
2x + 3 = 3x + 1
x = 2

Finding missing angles
please help!! i’m literally begging

Answers

Answer:

65

Step-by-step explanation:

the square means 90 add that to 25 and subtract from 180

Answer:

x =  65

Step-by-step explanation:

The measure of the entire angle is 180°. The angle on the furthest left (with a square in it) is a right angle, meaning that it is 90°.

All three of the angles (90°, x°, 25°) all add up to the measure of the line, which is 180°. So, we can write this equation.

90 + x + 25 = 180

Subtract 90 and 25 from both sides.

90 + x + 25 - 90 - 25 = 180 - 90 - 25

x =  65

Write an equation in slope intercept for that passes through (-3,3) and is parallel to y=3x-2

Answers

y-3=3(x+3)
y=3x+12
is the slope intercept

Solve the equation using square roots
x^2 - 55 = 26

Answers

Answer:

x = ±9

Step-by-step explanation:

x² - 55 = 26

   +55   + 55

     x² = 81

     x = √81

     x = ± 9

Answer:

x = 9, -9

Step-by-step explanation:

x^2 - 55 = 26

x^2 = 81.

Now, you might think that x = 9, but don't be fooled. -9 squared is also equal to 81.

So, x = 9, -9

Help fast please!!!!!!!

Answers

Answer: n=7+1/2

Step-by-step explanation:

We move all terms to the left:

2n+15-(30)=0

We add all the numbers together, and all the variables

2n-15=0

We move all terms containing n to the left, all other terms to the right

2n=15

n=15/2

n=7+1/2

1. Find the cost of 3.5 yards of fabric if the fabric is priced at $6.00 per yard.
$210.00
$1.71
$21.00
$17.10

Answers

$21.00

Step-by-step explanation:

if 1 yard equal 6 dollars

do 6 times 3 = 18

and half of 6 is 3

add 18+3=21 dollars

PLEASE HELP!!! ITS URGENT

Answers

Answer:

B.

Step-by-step explanation:

A is 10. B is 12. C (2^4) is 16. D is 3.14.... B (12) is the greatest.

Hope it helps!

Use the diagram to the right to solve for y.
A y = 13
B
y = 15
C. y = 7.5
D
y = 20

Answers

Answer: D y=20

Step-by-step explanation: I minus 115 and 120 and and multiplied 4x and i got y=20. I hope this helps

what are major turning points in algebraic knowledge through out history

Answers

Answer:

There are a lot of turning point in the history of algebra one of those is the discovery of  the plain and the quadrants by Rene Descartes. This discovery paved way to a lot of knowledge which was later on use in solving other complicated mathematical problems.

Step-by-step explanation:

Based on their own blood types a couple has a 0.75 probability of having a child with type A blood. If the couple has 4 children, what is the probability that they will have 2 children with type A blood?
A. 0.07
B. 0.21
C. 0.56
D. 0.75

Answers

Answer:

B. 0.21

Step-by-step explanation:

https://stattrek.com/online-calculator/binomial.aspx

put in 75% for success rate

4 for the amount of trials because that is the total of kids the couple has

2 for number of successes for how many kids would get Type A blood

once calculated you get.21 or answer B

A bag contains 40 red and green marbles. The number of green marbles, g, is 9 times the number of red mapples, . How many red marbles are in the bag? O 4 O 6 O 34 O 36​

Answers

Answer:

4

Step-by-step explanation:

You need to try out all the numbers.

lets start with 4

if there where 4 red marbles then there would be 9 times as many marbles

so 4 x 9 = 36

Now we add and see if the sum is 40

36 + 4 = 40

We got it on the first try

You can use the same method on more problems like these.

Hope this helps :)

Which of the following equations is equivalent to 3 • 12 = 36?
36 + 3 = 12
36 ÷ 3 = 12
36 • 3 = 12
36 – 3 = 12

Answers

Answer:

B

Step-by-step explanation:

36 ÷ 3 = 12 is basically the division version of the original equation. None of the other equations equal the same answer so B is the correct option.

36 ÷ 3 = 12 is equivalent to 3 • 12 = 36

Given X is midpoint of RS , MX =XS Prove Mx =RX

Answers

Answer:

Transitive Property

Step-by-step explanation:

Since X is the midpoint, it bisects the points RS. If MX=XS, and RS is the same as XS, then they are the same. This also follows the Transitive propety  (if a=b and b=c, then a=c)

(2,8) and (1,3)
What is the equation of the line

Answers

Answer:

y=5x-2

Step-by-step explanation:

pls solve these in the answer section i will give brianliest PLSSSSS

5.832 divided by 4

394.6 divided by 2


25.37 x 3.8

Answers

Answer:

0.00002237616

Step-by-step explanation:

5.832 divided by 4 = 1.458
394.6 divided by 2 = 197.3
25.37 x 3.8 = 96.406

Write a quadratic function in vertex form whose graph has the vertex ( -5. - 1) and passes through the point (-2.2).

Answers

Answer:

[tex](\frac{1}{3})(x+5)^2-1[/tex]

Step-by-step explanation:

So first let's write a graph in vertex form with a vertex of (-5, -1)

We get

a(x+5)²-1

We now need to determine a

we know that when x= -2 y=2 which means we have

a(-2+5)²-1=2

Solve for a

a(3)²=3

9a=3

a=3/9

a=1/3

Now that we know what a is equal to we can write our equation

[tex](\frac{1}{3})(x+5)^2-1[/tex]

1. Which inequality represents this situation? At least 25 cats are on my
porch.

Answers

Answer:

Step-by-step explanation:

cats=c

at least it means that there are 25 minimum

c[tex]\geq[/tex]25

Use distributive property to rewrite expression -8((-2-3/4)-8)

Answers

Answer:

-86

Step-by-step explanation:

-8((-11/4)-8)

((11/4-8)

8x(-43/4)

-2×43=-86

Find the value of the greater root of x2-6x+5=0

Answers

Answer: x-1)(x-5)=0 x=1 and 5

Step-by-step explanation:

PLEASE HELP IM DESPERATE
The height of a male athlete testing his vertical jump can be modeled by h = − 16t ^2 + 14t. The height is h and the time is t. How many seconds is he in the air?

Answers

Answer:

0.88 (I think this is how Mrs. Futch wants it to be written)

Step-by-step explanation:

h=-16t^2+14t

(Substitute h with 0)

0=-16t^2+14t

(Factor)

0=2t(-8t+7)

2t=0               -8t+7=0

t=0                  t=0.88

{0, 0.88}

Answer:

So everyone here in Mrs. Futch?

Step-by-step explanation:

escribe en cada fila dos divisiones que den el cociente o resultado que se te indica en la primera columna matemáticas con foto​

Answers

Answer:

I don't know  what you said

Step-by-step explanation:

But thanks for the points.

PLEASE HELP!! WORTH 5 POINTS ON MY TEST!! GIVING 30 POINTS!!
FIND BD

Answers

Answer:

16

Step-by-step explanation:

Hello so
16 is the answer

What is the slope of the line represented by y = 5x - 7​

Answers

Answer:

5

Step-by-step explanation:

Slope intercept form is y = mx + b

M is the slope

5 is the m

Answer:

5

Step-by-step explanation:

When your trying to find the slope of something you need to use slope intercept form.

Solve using proportions.

The triangles are similar, find the length of side (k) using a proportion; having ratios within the two figures.

Note: If someone could please answer before this upcoming Monday.​

Answers

Answer:

7.8 = k

Step-by-step explanation:

Since the figures are similar, we can use proportions

c           k

----- = -------

b            j

Substituting the values in

6.5         k

----- = -------

4          4.8

Using cross products

6.5 * 4.8 = 4k

31.2 = 4k

Divide each side by 4

31.2/4 = 4k/4

7.8 = k

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