Mathematics High School

You had $21 to spend on three pens .After buying them you had $12 how much did each pen cost

Answers

Answer 1
I thinks it’s 3 because 21-12=9 so you spent 9 dollars 9/3=3

Related Questions


Encuentra el Minimo común múltiplo (m.c.m.) de los sieguentes numeros 12y 15​

Answers

Answer:

is this question in Spanish ?

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me speak english

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how many solution 7(y+3)=5y+8

Answers

Answer:

there is only one it is y=-6.5

Step-by-step explanation:

The 7th grade class experienced a 15% decrease in enrollment.Last year,the 7th grade class had 280 students. How many how many students are enrolled in the 7th grade this year?

Answers

Answer: 238

Step-by-step explanation: 10% of 280 is 28. 1% of 280 is 2.8. Multiply 2.8 times 5 and you get 14. Add 10% and 5% (28+14) and you get 15% which is 42. Subtract 42 from 280 and you get 238.

Answer:

232 students are enrolled this year.

Step-by-step explanation:

Since 15% of the enrollment of the previous year is gone, you must take 15% of the total number of students and subtract that from the total number of students.

[tex]280*0.15=42[/tex]

This tells us that the 15% decrease means there are 42 fewer students enrolled this year. Now you would just subtract 42 from 280.

280 - 42 = 232

Samuel buys 3 4K TVs for $1200 each. There is a shipping charge of $90 to have all 3 TVs delivered to his house
How much does Gordon pay in total?
independent variable:
dependent variable:
function:
solve the function:

Answers

Answer:

Note!! if someone else answers, their answer is probably correct. I don't know functions that well. also, I'm assuming here that Samuel and Gordon are the same person.

Gordon/Samuel pays: 3690$

independent variable: the amount of TVs you buy

dependent variable: the cost for each tv

function: f(x) = 1200x + 90

solve the function: hopefully someone else can answer this!

if I made a mistake or misunderstood something, please let me know!

I think the corcorrect answer is 3690

Sturdy the diagram
Value of

Answers

Step-by-step explanation:

5x + 2 = 50 - x (vertically opp angle)

5x + x = 50 - 2

6x = 48

x = 8

if you wanna check it,

5x + 2 = 50 - x

5(8) + 2 = 50 - 8

40 + 2 = 42

42 = 42

Which fraction is equivalent to 0.018 ? there is a top enclose above 18 so, please help me with that ! thank you so much.

Answers

Answer:

9/500

Step-by-step explanation:

Two lengths are shown below: A. 24 inches B. 2 feet. Explain why length A is
equivalent to length B. Use your knowledge of converting inches to feet in
your answer.


I need help plzzz

Answers

Answer:

ok cuz evrey 12 inch = 1 feet thank youu

1 foot is equal to 12 inches meaning that 24 inches divided by 2 is 12 inches. Since each foot is 12 inches and we got 24/2= 12 that means that both 2 feet and 24 inches are equivalent, idk if I did good but my bad if you don’t understand

BRAINLIEST ANSWER! I NEED HELP ASAP!!

Answers

Answer:

The answer is in the picture. I believe it is correct :)

Answer:

yep i checked it too its right

Thanks in advance!
filler filler filler filler filler

Answers

Answer:

C

Step-by-step explanation:

The base number is 2, and it's being multiplied 7 times, so 7 is the exponent

Hope this helps!

Match the following to the correct solution

Answers

Answer:

a/c/z

Step-by-step explanation:

Help me please what is 2+2 please help me.

Answers

Answer:

6969694204206969

Step-by-step explanation:

lololololololol

Cristian made an ankle bracelet using 6 red beads, 10 green beads, 4 purple beads, and 5 yellow beads. He wants to make a necklace that has the same ratio of color beads as the ankle bracelet. If the necklace has 15 yellow beads, how many purple beads will it have?

Answers

Answer:

20 is the answer

Step-by-step explanation:

MARK BRANIEST

Multiply (12-5i)(-3+4i)

Answers

Answer:

−16 + 63i

Step-by-step explanation:

Multiply using the FOIL method, then combine the real and imaginary parts of the expression.

Hope this helps! :D

c) 2x(3x + 4)
expand the following:

Answers

Answer:

6x^+8x

Step-by-step explanation:

Its a monomial by a binomial, so we need to multiply the 2x with each term in the bracket, and put the sign in the brackets.

final answer: 6x^+8x

Answer:

[tex]6x^{2} +8x[/tex]

Step-by-step explanation:

Multiply 2x into the equation to get [tex]6x^{2} +8x[/tex].

the sum of 4 consecutive integers is -62 write an equation to determine the smallest of the integers ​

Answers

Answer:

x + (x+1) + (x+2) + (x+3) = -62

x = -17

Step-by-step explanation:

x = smallest

x + (x+1) + (x+2) + (x+3) = -62

4x +6 = -62

4x = -68

x = -17

What do the zero exponent and negative exponents properties mean

Answers

In other words, if you raise a nonzero number to the power of
0
,
the result is
1.

Mathematicians debate the value of
0
0
.
Some say it's
1
,
and some say it's undefined.

Here are some examples of the Zero Power Rule. Notice it works for numbers and for variables.

1
0
=
1
(
153
+
x
)
0
=
1
,
if
x
≠
−
153
(
x
+
y
+
z
)
0
=
1
,
if
x
+
y
+
z
≠
0

So when
a
≠
0
,
why does
a
0
=
1
?
Why does the Zero Power Rule hold? Here's one way to think about it:
a
0
=
a
n
−
n
Then, by the quotient rule for exponents, we can write this as:
a
n
−
n
=
a
n
a
n

Then this becomes a problem about dividing fractions. Since the numerator and the denominator are both the same this becomes
1
.
a
n
a
n
=
1


A negative exponent means how many times to divided by the number

what matrix is a result of m x h enter your answer by filling in the boxes enter any fractions as simplified fractions​

Answers

Answer:

-32/3 16 -16/3

Step-by-step explanation:

I got it wrong and this was the right answer

Answer:

Step-by-step explanation:

Estimate the product. Then find the exact product.

7.9(10.1)
estimated product = 80, exact product = 7.97
estimated product = 80, exact product = 79.79
estimated product = 80, exact product = 797
estimated product = 80, exact product = 7,979

Answers

Answer:

79.79

Step-by-step explanation:

Somebody help please?

Answers

Answer:

x=13

Step-by-step explanation:

vertical opposite angles are equal.

Answer:

13

Step-by-step explanation:

THERE THE SAME

2. Let z represent the unknown number. Write expressions for:
a. A third of the unknown number plus three
b. Four times the unknown number less twice the number
C. The sum of the unknown number and its square
d. The fraction obtained when double the unknown number is divided by the sum of the unknown number and four​

Answers

Answer:

a. z+3

b. 2z - 4z

c. z + z^2

d. 2z/(z+4)

Hope it helped.

five million, forty-three thousand, two hundred ninety-nine in numbers ​

Answers

Answer:

5,043,299

Step-by-step explanation:

five million = 5,000,000

forty-three thousand= 43,000

two hunded = 200

ninety-nine = 99

Answer:

5,043,299

Step-by-step explanation:

i thinks its that

A rectangle is drawn on a coordinate grid. The equation for one side of the rectangle is 2x – 5y = 9. Which could be the equation of another side of the rectangle?
y = 5x + 9
y = 2x – 9
y = -2/5x + 9
y = 2/5x - 9

Answers

Answer:

D

Step-by-step explanation:

it just is

What fraction of an hour is 8 minutes?
Give your answer in its simplest form.

Answers

Answer:

2/15

Step-by-step explanaion

4/30 simplified is 2/15

Here goes another question

Answers

Answer:

y = x - 8

Step-by-step explanation:

In order to solve this, we need to use point-slope form.:

y - y1 = m(x - x1)

Substitute the numbers into the equation:

y - (-8) = 1(x - 0)

y + 8 = x

y = x - 8

the answer would be y=x-8 ...!

2x+2a=4b solve for a

Answers

Answer:

a=2b-x

Step-by-step explanation:

Simplifying
2x + 2a = 4b

Reorder the terms:
2a + 2x = 4b

Solving
2a + 2x = 4b

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-2x' to each side of the equation.
2a + 2x + -2x = 4b + -2x

Combine like terms: 2x + -2x = 0
2a + 0 = 4b + -2x
2a = 4b + -2x

Divide each side by '2'.
a = 2b + -1x

Simplifying
a = 2b + -1x

Find the 7th term of the arithmetic sequence given a12=29 and
a16=53
a7=___

Answers

Answer:

Thus: a7=-1

Step-by-step explanation:

Arithmetic Sequences

The arithmetic sequences are identified because each term is obtained by adding or subtracting a fixed number to the previous term.

The equation to calculate the nth term of an arithmetic sequence is:

[tex]a_n=a_1+(n-1)r[/tex]

We know: a12=29, a16=53, thus

[tex]a_1+(12-1)r=29[/tex]

[tex]a_1+(16-1)r=53[/tex]

Simplifying:

[tex]a_1+11r=29[/tex]

[tex]a_1+15r=53[/tex]

Subtracting both equations:

[tex]4r=53-29=24[/tex]

Solving:

[tex]r=24/4[/tex]

r=6

The 7th term can be found as 5 terms before the 12nd:

[tex]a_7=a_{12}-5r[/tex]

[tex]a_7=29-5*6=29-30=-1[/tex]

Thus: a7=-1

18x + 12- 4
I need help ASAP.

Answers

Answer:

b

Step-by-step explanation:

Answer:

B and E

Step-by-step explanation:

Which values of a, b, and c correctly complete the division? One-fourth divided by StartFraction 5 Over 6 EndFraction = StartFraction 1 Over a EndFraction times StartFraction b Over c EndFraction a = 4, b = 5, c = 6 a = 1, b = 6, c = 5 a = 1, b = 5, c = 6 a = 4, b = 6, c = 5

Answers

Answer:

a = 4, b = 6 and c = 5

Step-by-step explanation:

It is given that,

[tex]\dfrac{\dfrac{1}{4}}{\dfrac{5}{6}}=\dfrac{1}{a}\times \dfrac{b}{c}[/tex]

We know that,

[tex]\dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a}{b}\times \dfrac{d}{c}[/tex]

So,

[tex]\dfrac{1}{4}\times \dfrac{6}{5}=\dfrac{1}{a}\times \dfrac{b}{c}[/tex]

If we compare both sides of the equation we get,

a = 4, b = 6 and c = 5

Hence, these are the values of a,b and c.

Answer:

The simple and easy answer is D

Step-by-step explanation:

helpp ! look at the pic help me asap

Answers

y12 i guess idrk sorryyyy maybe look on google BRAINLY LET ME POST

Find the slope and the y-intercept of the line.
y = 5/4x+3 ​

Answers

The slope is 5/4 and the y intercept is 0,3
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