Mathematics High School

A teacher purchased 20 calculators and 10 measuring tapes for her class and paid $495. Later, she realized that she didn't order enough supplies. She placed another order of 8 of the same calculators and 1 more of the same measure tape and paid $178.50.The system represents the situation

`20c+10m=495`

`8c+1m=178.50`

Find the cost of one calculator and the cost of one measure tape using one of our methods of solving systems.

Answers

Answer 1

Answer:

Equations are

20c + 10m = 495..............(1)

8c + 1m = 178.5.................(2)

Now , equation (2) * 10 = 80c + 10m = 1785...........(3)

So, Eq. (3) - Eq(1) =

80c + 10m - 20c - 10m = 1785 - 495

60c = 1290

c= 21.5

********************************************************

Now place the value of c in Eq (2)

So , m =6.5

Mark my answer as brainlist answer

Step-by-step explanation:

Related Questions

write the equation of the line in fully simplified slope-intercept form.

Answers

Step-by-step explanation:

świnka pepapomoże to zmieniam o tym zakładem ubezpieczeń i bankowości elektronicznej na tablecie i

Y= -4x -5 hope this helps do the work yourself next time

HEEEEELP The height of a street light is 50 feet. It casts a 40−foot shadow. At the same time, a man standing next to the street light casts a 5−foot shadow. How tall is the man?

Answers

Answer:

5 foot

Step-by-step explanation:

cupcakes and points for those who answer this question for me
(the screenshot)

Answers

Answer:

2.06

Step-by-step explanation:

The original decimal is 2.0625.

Since the thousandths place is 2, we can't round up. So we can keep the 6 which is in the hundredths place giving us 2.06

6 (8j - 3l + 9 ) 12l + 14j

Answers

Answer:

5822j-15972

Step-by-step explanation:

Answer:

5822j-15972

Step-by-step explanation:

Identify the shape that is graphed from the points:
A (4, 6)
B (4, 7)
C (8, 6)
D (8, 7)

Answers

Answer:

Rectangle

Step-by-step explanation:

It's a rectangle because opposite sides are parallel as you can see , it has 4 right angles , and it has 4 sides .. it's not a square because in a square all sides are equal

PLS PLS help!
Type an equation of a parabola that is moved down 2 units, stretched vertically by a factor of 3, and moved left 5 units.

Answers

9514 1404 393

Answer:

y = 3x^2 +30x +69

Step-by-step explanation:

Transformations work this way:

g(x) = k·f(x) . . . . vertical stretch by a factor of k

g(x) = f(x -h) +k . . . . translation (right, up) by (h, k)

So, the translation down 2 units will make the function be ...

f(x) = x^2 ⇒ f1(x) = f(x) -2 = x^2 -2

The vertical stretch by a factor of 3 will make the function be ...

f1(x) = x^2 -2 ⇒ 3·f1(x) = f2(x) = 3(x^2 -2)

The horizontal translation left 5 units will make the function be ...

f2(x) = 3(x^2 -2) ⇒ f2(x +5) = f3(x) = 3((x +5)^2 -2)

The transformed function equation can be written ...

y = 3((x +5)^2 -2) = 3(x^2 +10x +25 -2)

y = 3x^2 +30x +69

The attachment shows the original function and the various transformations. Note that the final function is translated down 6 units from the original. That is because the down translation came before the vertical scaling.

Can someone help? Correct answer gets brainliest!

Answers

Answer:x= 8

Step-by-step explanation:11-3=8. 8+3=11

PLEASE HELP WILL MARK BRAINLIEST!!!
Select all that are equivalent to sin∠GFH

Answers

Answer:

I think sin<GEJ IS equivalent to sin∠GFH

All that are equivalent to sin∠GFH is

D) cos(<EGJ)

"Corresponding angles"

sin(<GEJ)cos(<FGH)cos(<EGJ)

From the image JE and HF are parallel.

So angle GFH and angle GEJ are corresponding angles.

So they are equal.

so, sin(<GFH) = sin(<GEJ).

From triangle GFH, <GFH+<FGH = 90.

So, sin(<GFH) =cos(<FGH).

Again <FGH = <EGJ.

So, sin(<GFH) =cos(<EGJ)

All that are equivalent to sin∠GFH is cos(<EGJ).

Thus, the correct answer is D.

Learn more about corresponding angles: https://brainly.com/question/2009183

Rearrange p=r+3 to make r the subject

Answers

Answer:

r = p-3 this is correct answer of this question

The equation p=r+3 can be rearranged as r=p-3

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equation is p=r+3

p equal to r plus r

Plus is the operator of addition and p and r are variables

Subtracting 3 from both sides, we get:

p - 3 = r + 3 - 3

Simplifying the right-hand side:

p - 3 = r

Therefore, r = p - 3.

Hence, the equation p=r+3 can be rearranged as r=p-3

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ2

Shakes.
4. A zoo has
It has 375 monkeys.
Compare the number of
snakes to the number
of monkeys.
Write > or <.
405
375

Answers

Answer:

405 > 375

375 < 405

Step-by-step explanation:

< is less than

> is greater than

Use the FOIL method to check your answer from part A.

Answers

Answer:

(x+12)(x+4)

x²+12x+4x+48

x²16x+48

Step-by-step explanation:

your right

(a+b)(c+d)

ac+ad+bc+bd

Evaluate each expression when y=5.

B. 4(y+3)

Answers

Answer:

B. 4(y+3)=4(5+3)=4×8=32

Answer:

Step-by-step explanation:

Step 1: Sub y = 5 into the expression

Find anywhere that has a 'y' and replace it with a 5

4(y+3)

4(5+3)

Step 2: Solve

Use BEDMAS to solve the expression

4(5 + 3)

4(8)

Step 3: Therefore Statement

Therefore the expression is equal to 32

ooth
3 12100
Х
-3
-2.
у
5
2
-1
4
-7
What is the slope?

Answers

-4 that will be your answer

If the perimeter of the rectangle shown is 60 feet, we can use the equation 8x + 4 = 60 to find its dimensions. If the solution to this equation is x = 7, what are the dimensions of the rectangle?

Answers

Answer:

l= 28 feet

b = 2 feet

Step-by-step explanation:

The perimeter of a rectangle is given by;

P= 2(l + b)

Comparing this to the equation; 8x + 4 = 60, i can write;

2(4x + 2) = 60

This means that;

l = 4x

b = 2

but x =7

So;

l = 4* 7 = 28 feet

b = 2 feet

Kate got 2 out of the 3 questions correct on her pop quiz what is her grade

Answers

Answer:

0.6666666666etc but you have to round it to 67 because it is closer to 67

Step-by-step explanation:

Deion left his house and drove to the store. He stopped and went inside. From there, he drove in the same direction until he got to the bank. He stopped and went inside the bank. Then he drove home. The graph below shows the number of blocks away from home Deion is xx minutes after he left his house, until he got back home.
\text{How many blocks is it from Deion's house to the bank?}
How many blocks is it from Deion’s house to the bank?

Answers

Answer:

I dont know if this is still helpful but the answer is 14 blocks

Step-by-step explanation:

The point (-7,3) is on the line given by which of the equations below?
A. y = 3x
B. y= 7x
C. y= x + 10
D. y= x-10
what equation?

Answers

The answer is c (y=x+10).

Eli is following this recipe to bake bread rolls.
He uses 600 mL of water.
How much of the other ingredients does he use?

Recipe: Makes 10 bread rolls
600 g flour
9 g salt
12 g yeast
30 mL oil
500 mL water
(Proportion)

Answers

720 g flour
10.8 g salt
14.4 g yeast
36 mL oil

Find the volume of a cylinder with height = 10ft and the diameter of the base circle is 12ft.

Answers

Answer:

The answer is 1130.97

Step-by-step explanation:

The formula that I used

V=πr2h

Volume = π·62·10 ≈ 1130.97336

Describe y= -3x+4 in words.

Answers

Answer:

y=-3x+4

put x =0

y=-3(0)+4

y=4

putx=1

y=-3(1)+4

y=-3+4

y=1

Jason wants to create a box with the same volume as the one shown below. He wants the length to be 4inches. What would be the measurements of the width and height?

Answers

Sorry, need either a photo of the box or the measurements

1. In Mr. B's classroom, there are 20 students.
Twelve students got a B, one student got a C, and
the rest received an A. What percent of the class
received an'A?

Help please

Answers

Answer:

1.5%

Step-by-step explanation:

That's not an answer for me

Answers

Answer:

so you need a answer or a question

Answer:

child anywaysssss

Step-by-step explanation:

yfgxgx

1 + 7x
The sum of two numbersis 23. The greater number
is b. Select the expression that represents the lesser
number.

Answers

Answer:

Step-by-step explanation:

a+b = 23

a<b

a = 23-b

What is the longest side of a right triangle?
A )Right Angle
B) Hypotenuse
C)Lega
D )Leg B

Answers

the longest side of a right triangle is hypotenuse

2x3(5-4)/6.2
Algebra

Answers

6/6.2 OR 0.627

Step-by-step explanation:

[tex] \frac{2 \times 3(5 - 4)}{6.2} [/tex]

6(1)/6.2 = 6/6.2 OR 0.627

Plz help me! I need an answer right away

Answers

The answer is G ( 1/9 )

Ellen Greenberg loves to make and fly kites. Ellen is planning to open a shop that
sells custom-made kites. She asks for your advice to help her set financial goals.
Ellen estimates that after expenses, she can make a $15 profit on each kite she
sells. If her annual income goal is $15,400, how many kites will she have to sell?

Answers

Answer:

She must sell 1026.66666667 kites

Step-by-step explanation:

15,400/15

The number of kites that Ellen needs to sell to complete her annual goal is 1027.

What is Division?

The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.

Given that Ellen can make a $15 profit on each kite she sells. Also, Ellen's annual income goal is to have $15,400. Therefore, the number of kites that Ellen needs to sell is,

Number of kites that Ellen will sell = Annual income goal/Profit on each kite

Number of kites that Ellen will sell = $15,400 / $15

= 1026.6667

Since Ellen can not sell half kites, therefore, she needs to sell 1027 kites to complete her annual income goal.

Hence, the number of kites that Ellen needs to sell to complete her annual goal is 1027.

Learn more about Division here:

https://brainly.com/question/369266

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10x - 4y for x = 14 and y = 5 PLEASE!

Answers

Answer:

120

Step-by-step explanation:

10(14)-4(5)

=140-20

=120

Answer:

120.

Step-by-step explanation:

10(14)-4(5)

140-20

120.

Em cada caixote cabem 30 dúzias de laranjas. Um caminhão está carregado com 80 caixotes de laranjas. Quantas

laranjas, no total o caminhão está carregando?

Answers

Responda:

2400 dúzia

28800 laranjas

Explicação passo a passo:

se cada caixa pode conter 30 dúzias de laranjas e há 80 caixas, então para descobrir quantas dúzias há 30x80=2400

mas isso é quantas dezenas existem. Uma dúzia = 12 laranjas para descobrir quantas laranjas multiplicam as dúzia por 12 2400x12 = 28800 laranjas totais

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