Answer:
x = 3
Step-by-step explanation:
y = 5x
x + y = 12
x + 5x = 12 (substitute 5x in the place of y)
6x = 12
x = 12/6
x = 3
Answer:
Step-by-step explanation:
y=5x
+5(y)=(12-x)+5 which distributing is +5y= +60-5x
y=5x
+5y=+60-5x
6y=60
y=10
10=5x
x=2
suppose that 12 dimes and nickels are worth 95 cents. how many dimes and nickels are there? use systems of equations to solve.
Answer:
7 dimes and 5 nickles
Step-by-step explanation:
7 times 10 equals 70 5 times 5 equals 25. 70 plus 25 equals 95
Help! I just need someone to check if this answer is indeed correct, I believe it is, but I just would prefer having a second opinion!
Answer:
Step-by-step explanation:
Yes
Please answer the question above.
Answer:
∠2 = 80°
Step-by-step explanation:
∠1 and ∠2 are supplementary angles (their sum is 180°)
Can anyone help me with this problem?
Find the slope of through the two points (3,4) and (-2,3).
Answer:
Slope is 1/5
Step-by-step explanation:
m = (y2 - y1)/ (x2 - x1)
m = (3-4)/(-2-3)
m = (-1)/(-5)
m = 1/5
the perimeter of a rectangle is at least 74 cm the length of a rectangle is two more than four times the width of a rectangle what are the minimum dimensions of the rectangle
Answer:
2W+2L=perimeter=74
Step-by-step explanation:
2W=74-2L
2(2W)+2(L/2)=76
substitute 74 - 2L for 2W in the last equation to solve for L. Put that value in the first equation to find W. Check by putting both values into the last equation.
He wants to wrap the present. How much wrapping paper does he need if it’s 1:00 in the afternoon and he wants to give it to her at 5:00pm?
The Johnson family went out to lunch. How much did the meal cost per person, including sales tax and tip? • The meal cost $46.72. • The sales tax was 8% of the cost of the meal. • The tip was 15% of the meal and sales tax. • There are 4 people in the Johnson family. A) $14.00 B $14.50 C) $14.95 (D $15.25
Answer: c: $14.50
Step-by-step explanation:I just got done doing this question
Five students bought supplies. Three students each bought 3 pencils and an eraser. Two students each bought a pen and 2 pencils. Supply Cost pencil $0.16 eraser $0.56 pen $0.45 Select the equation that can be used to find the total cost (c) of the supplies. Mark all that apply.
Answer:
(5×0.16)+ (1× 0.56) +(1 ×0.45)
What percent of 54 is 28?
Answer:
51.85
Step-by-step explanation:
hope this helps lol
51.85
Percentage Calculator: 28 is what percent of 54? = 51.85.
A salt water solution is cooled to -3C. During an experiment , the mixture is heated so that its, temperature rises at steady rate. Write an equation to represent the temperature ,y, after x minutes
Answer:
[tex]y = -3+ rx[/tex]
Step-by-step explanation:
Given
[tex]Base = -3C[/tex]
[tex]Time = x[/tex]
Required
Determine the equation (y)
Let the steady rate be represented with r.
So, the equation (y) can be determined using:
[tex]y = Base + Rate * Time[/tex]
[tex]y = -3+ r* x[/tex]
[tex]y = -3+ rx[/tex]
Need help!!!!!!!!!!!!!!!
Answer:
no error original system so good by
6(10 - w) when w = 7
Show your work
Answer:
18
Step-by-step explanation:
you always do the parenthesis first
10-7=3
6x3=18
Help please . Thank you !!
Answer:
A=25m
Step-by-step explanation:
Given that 3^-n=0.2
Find the value of (3^n)^2
Step-by-step explanation:
3^-n=0.2
1/3^n=0.2
1=0.2(3^n)
3^n=1/0.2
3^n=5
(3^n)²=5²
(3^n)²=25
The value of the given expression (3^n)^2 is; 25.
Evaluating the value of an expressionFrom the task content, it follows that;
3^-n=0.21/3^n=1/5On this note; it follows that; 3^n = 5.
Consequently, the value of the expression (3^n)^2 is; (5)²
The value of the expression; (3^n)^2 is; 25.
Read more on value of expressions;
https://brainly.com/question/671415
can someone help???????????
Answer:
B. is the correct answer
hii please help i’ll give brainliest!!
Answer:
D
Step-by-step explanation:
When you hit your brakes hard it will move then stop immeaditly. But when you barley push the brakes it come to a steady stop.
Anyone know the answer to this
Answer:
The answer is B
Step-by-step explanation:
3/4
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find the values of b that make x^2+bx+1 a perfect square
Answer:
(x+1)^2 = x^2 + 2x +1
so b =2
Step-by-step explanation:
1. Marcus needs to bike at least 80 miles this week for his training. If he has already biked 25
miles this week, then how many miles should he bike on each of the 5 remaining days this week?
Variable:
Inequality:
Solution:
Answer:
There someone already asked the question
A river 3m deep and 40 m wide is flowing at the rate 2km /h . how much water will fall into the sea in a minute.
Answer:
Area of river = depth × width
=3×40
[tex] = 120 {m}^{2} [/tex]
amount of water that falls into the sea ⇒
Area of river × flow rate
[tex]120 {m}^{2} \times 2 \: \frac{km}{hr} [/tex]
[tex]120 \times \frac{2 \times 1000 {m}^{2} }{(60)min} [/tex]
[tex]4000 \: \frac{ {m}^{3} }{min} [/tex]
:. [tex] {4000m}^{3} [/tex] of water falls into the sea per min.
So, [tex] {4000m}^{3} [/tex]
= 4000 × 1000 litres
= 4000000 litres
So, in 1 minute, water will fall into the sea is 4000000 litres.
Step-by-step explanation:
Hope it is helpful....
help please ill give brainliest
uh yeahhhhhhhhh you see it
Answer:
1296
Step-by-step explanation:
Answer:
what they said. jk i actually don't know if they're correct
Step-by-step explanation:
A cube has a surface area of 126 feet. What is the area of one face?
Answer:
21 square feet
Step-by-step explanation:
A cube has 6 faces, therefore 126/6 = 21 sq/ft the area of 1 face
The area of one face of a cube is 21 feet.
What is the surface area of cube?Surface area of cube is the sum of areas of all the faces of cube, that covers it.
The formula for surface area is equal to six times of square of length of the sides of cube.
A cube has a surface area of 126 feet.
The area of one face is given by;
[tex]\rm Area \ of \ one \ face=\dfrac{Surface \ area}{Total \ number \ of \ faces}\\\\ Area \ of \ one \ face=\dfrac{126}{6}\\\\ Area \ of \ one \ face=21[/tex]
Hence, the area of one face of a cube is 21 feet.
Learn more about cube here;
https://brainly.com/question/22241530
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A 2-kilogram bag of flour costs $4.70. What is the unit price?
Answer:
$2.35
Step-by-step explanation:
4.70/2= 2.35
please help quick add egbtfdghy
Answer:
The second option is correct.
Step-by-step explanation:
If x = 5, then this happens.
1(5) - 2 < 3
5 - 2 < 3
3 < 3
That is incorrect because 3 = 3.
The second option is correct, because:
4 - 2 < 3
2 < 3
This work so the second option is correct
Calculate the surface area.
Thank you for the help
i will mark brainiest
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Answer: 659.7 yd^2
I hope this helped!
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There are 10 doors to a coliseum. In how many ways can a person go in and out if one can enter any door but leave using another door? Use permutation formula (P(n,r)) to solve.
Answer:
90 is the answer
Step-by-step explanation:
P(10,2) = [tex]\frac{10!}{(10-2)!}[/tex] = [tex]\frac{10!}{8!}[/tex] = [tex]\frac{10x9x8!}{8!}[/tex]
10x9
=90
The number of ways should be 90.
Calculation of no of ways:Since There are 10 doors to a coliseum.
So, here we used the permutation
[tex]= \frac{10!}{(10!-2!)}\\\\ = \frac{10!}{8!} \\\\= \frac{10\times 9\times 8!}{8!} \\\\= 10\times 9[/tex]
= 90
Learn more about permutation here: https://brainly.com/question/14767366?referrer=searchResults
pls help with this problem
Answer:
2
Step-by-step explanation:
Isolate the variable:
6x - 5 = 7
+5 +5
6x = 12
/6 /6
x = 2
Check our work:
6(2) - 5 =7
12 - 5 = 7
7 = 7
Correct!
triangle PQR with side p across from angle P, side q across from angle Q, and side r across from angle R
HELP PLEASE I COULDN'T FIND THE ANSWER ANYWHERE
If ∠R measures 18°, q equals 9.5, and p equals 6.0, then which length can be found using the Law of Cosines?
1. p
2. q
3. RQ
4. PQ
Answer:
P
Step-by-step explanation: