MATHEMATICS MIDDLE SCHOOL

What is the solution to the system of equations?O (-20, 10)
O (10,--20)
O (10,4)
O (4, 10)
What is the solution to the system of equations? O - 1

Answers

Answer 1
Answer:

The value of the solution to the system of equations are, (10, - 20)

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

System of equations are,

y = -5x + 30  .. (i)

x = 10

Now, We can find the solution as;

Plug x = 10 in equation (i);

y = - 5x + 30

y = - 5 × 10 + 30

y = - 50 + 30

y = - 20

Thus, The value of the solution to the system of equations are, (10, - 20)

Learn more about the mathematical expression visit:

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Answer 2
Answer: The correct answer is (10,-20), because the equation already gives you the correct x value. Then, from there you just plug 10 in for x in the y equation. Giving you a -20, :)

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Mr. broun paid $3.30 in tax on a $55 motel bill. What percent of $55 was the Tax?

Answers

Answer:

6%

Step-by-step explanation:

55(x)= 3.30

3.30/55 = .06

x=.06 which equals 6%

Answer:

That would be 6%.

A bakery sends 4 carton of rolls . Each carton contains 6 box's holding 12 rolls each. The store divides the rolls into 8 in each bag. How many bags of rolls are there?

Answers

4 times 6 to find out how many boxes there are.
There are 24, so you multiply this by 12 to find out how many rolls there are. There are 288 rolls.
Divide this by 8 to find how many bags there are. There are 36 bags.
start by finding how many rolls are in each carton: 6 X12= 72
now that you know how many rolls are in each carton, find the total amount of rolls in 4 cartons, simply by 72 X 4 = 288
now that there is 288 rolls total, just divide by 8 to find your answer: 36

A powdered drink mix is stored in a cylindrical container that has a radius of 6 centimeters and a height of 14 centimeters. Which is closest to the maximum number of cubic centimeters the container will hold?

Answers

V=area of base times height
height=height
area of base=area of circle=pir^2
V=hpir^2
r=6
h=14

V=14pi6^2
V=14pi36
V=504pi
aprox pi=3.141592
V=1583.3 round
V=1583 cm^3
Basics of a circle of radius r = 6cm
A  - area baze
A = πr² = π(6cm)² = 36πcm²
2A (upper and lower base) = 2* 36πcm² = 72πcm²

lateral surface is a rectangle . Side, and the length - lof the circle and side b is the height h of the cylinder .
l = 2πr = 2*π*6cm = 12πcm
h = 14cm
Ar -  a rectangle
Ar = l*h = 12πcm * 14cm = 168πcm²

Area cylindrical 
2A + Ar = 72πcm² + 168πcm² = 240πcm²

V = A*h = 36πcm² * 14cm = 504πcm³

A large spool holds 78.5 meters of steel cable.How many centimeters of cable does the spool hold?

Answers

The answer is 7850 centimeters since 1m=100 cm. 78.5*100=7850

Please answer question number four thank you!

Answers

26( w times w times w less than nvm its less than

Jordan bought a notebook for $5, 6 pencils for $1 each, and a binder for $9. The sales tax for the whole purchase was $2What percent was the sales tax?( The First one )


Jackie buys a basket for $6, 2 pounds of apples for $3.50 per pound, and 2 pounds of oranges for $3.50 each per pound. The tax for the whole purchase is $1.

Express the tax as a percentage.( The second one)

Answers

1.
t= total
t=5+6(1)+9
t=20
$20 total

p= sales tax from purchase
s= sales tax percentage
ts=p\n20s=2 \n s= (2)/(20) \n s=.1
.1(100)=10
10% sales tax

2.
t= total
t=6+2(3.5)+2(3.5)
t=6+7+7
t=20
$20 total

p= sales tax from purchase
s= sales tax percentage
ts=p \n20s=1\n s= (1)/(20) \n s=.05
.05(100)=5
5% sales tax
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