Answer:
x = 5
Step-by-step explanation:
use the formula x = -b/2a and plug in the values.
A student spends $1.85 for a sandwich, $1.15 for a drink, $0.65 for a bag of chips, and $1.10 for two apples. How much money does the student spend at lunch, in dollars and cents?
Answer:4.75
Step-by-step explanation:
do the math all you will get what i got
The student spends at lunch 4.75 dollars or 475 cents.
What is Measurement unit?A measurement unit is a standard quality used to express a physical quantity. Also it refers to the comparison between the unknown quantity with the known quantity.
Given that;
A student spends $1.85 for a sandwich, $1.15 for a drink, $0.65 for a bag of chips, and $1.10 for two apples.
Now,
Since, A student spends $1.85 for a sandwich, $1.15 for a drink, $0.65 for a bag of chips, and $1.10 for two apples.
Hence, The amount of total money in dollars is,
⇒ $1.85 + $1.15 + $0.65 + $1.10
⇒ $4.75
We know that;
⇒ 1 dollar = 100 cents
Hence, we get;
⇒ 4.75 dollars = 4.75 × 100
= 475 cents
Thus, The student spends at lunch 4.75 dollars or 475 cents.
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will mark brainliest
Answer:
[tex]x\geq -6[/tex]
Step-by-step explanation:
If we graph it, we see that the function exists when [tex]x\geq -6[/tex]. Not sure what more I can say.
I hope this helps!
Answer:
D
Step-by-step explanation:
The domain must not let 1/3 x + 2 go less than 0. So equate this binomial to 0 and then use the < or > symbol to indicate what the minimum value is.
1/3 x + 2 = 0 Subtract 2 from both sides
1/3 x = - 2 Multiply 3
3(1/3) x = - 2 * 3
x = - 6
So if x is less than - 6 the binomial will go negative and that is not a permitted value at this level.
So x must be - 6 or bigger.
Let's see what happens when x = - 6
1/3 ( - 6) + 2
-2 + 2
0
That's the minimum value for the domain.
Now try - 9
1/3(-9) + 2
- 3 + 2 = -1
That means you will have √-1 which does not exist in the rational world.
Now try x = 9
1/3 (9) + 2
3 + 2 = 5 which is fine.
So the answer you seek is x ≥ -6
A roller skating rink charges a flat rate of $5 to rent skates, plus $2.50 per hour to skate. You rent skates and skate for 3 hours. If you pay with a $20.00 bill, how much change do you get back?
Answer:
$7.50
Step-by-step explanation:
First, you multiply 3 and $2.50 (because you skate for 3 hours and it's $2.50 per HOUR to skate) 3 x 2.50 is $7.50 plus the flat rate of $5 is $12.50. So, your total altogether would be $12.50. So if you pay that total with $20, you have to subtract 12.50 from 20. 20 - 12.50 is $7.50. Your change will be $7.50. I hope this is correct! So sorry if it isn't!
Answer:
7.5
Step-by-step explanation:
First, you multiply 2.50 x 3. The answer to that is 7.50. Add on the renting skates, that is 12.50. Then, you subtract 12.50 from 20.00. The answer is 7.5.
Jeremy bought a $60 pair of sneakers on sale for 15% off. Then, he used a coupon that gave him an additional 10% off. Can Jeremy find the cost of the sneakers by adding the percents? Why or why not?
Answer:
Jeremy find the cost of the sneakers by solving for the values of the 10% in dollars and subtracting the dollar amount from the cost of the sneaker
Step-by-step explanation:
Step one:
given data
cost of sneakers= $60
Required
the cost of the sneaker after the two discounts
Actually, the two percents given are the discount of the sale.
the first discount is
15%= 15/100*60
=0.15*60
=$9
The second is 10% coupon
10/100*60
=0.1*60
=$6
The total discounts = 9+6= $15
The cost of the sneakers= 60-15= $45
Jeremy find the cost of the sneakers by solving for the values of the 10% in dollars and subtracting the dollar amount from the cost of the sneaker
Find the slope of the line that passes through (8,10) (1,1)
Answer:
9/7
Step-by-step explanation:
slope m= rise/run= (y2-y1) / (x2-x1)
m= 10-1/8-1 = 9/7
If Sarah bought 3 pounds of apples for $6.75 and Carlos got 2 pounds of apples for $4.52,who paid less per pound and got the better deal Sarah or Carlos?
Answer:
Sarah
Step-by-step explanation:
6.75/3 is the total for one pound . This = 2,25 while calros' 4.52/2 = 2.26. sarah paid one cent less, getting a better deal than carlos
9y+8y+4Y=5y-16 helpppppppppp
Answer:
Y=1
Step-by-step explanation:
9y+8y+4Y=5y-16
21y-5y=16
16y=16
Y=16/16
Y=1
So value of Y is 1
Which one does not belong?
a. 10 miles per 2 hours west
b. 33 km/s north
c. coming to a stop
d. 9 m/s upward
Answer:
i would think that the answer is c. coming to a stop
Answer: C doesn’t belong
Charlie has a giant bag of gumballs and wants to share them with his friends. He gives half of what he has to his buddy, Jaysen. He gives half of what's left after that to Marinda. Then he gives half of what's left now to Zack. His mom makes him give 5 gumballs to his sister. Now he has 10 gumballs left. How many gumballs did Charlie have to begin with?
Answer:
120 gumballs
Step-by-step explanation:
Let
x = total gumballs
Buddy = 1/2x
Balance = x - 1/2x
= 2x-x/2
= 1/2x
Miranda = 1/2 of 1/2x
= 1/2 × 1/2x
= 1/4x
Balance = 1/2x - 1/4x
= 2x-x/4
= 1/4x
Zack = 1/2 of 1/4x
= 1/2 × 1/4x
= 1/8x
Balance = 1/4x - 1/8x
= 2x-x/8
= 1/8x
His sister = 5
Balance = 1/8x -5
10 = 1/8x - 5
10 + 5 = 1/8x
15 = 1/8x
x = 15 ÷ 1/8
= 15 × 8/1
= 120
x = 120 gumballs
Solve these. PLEASE HELP IM GIVING 40 POINTS
Answer:
1. x=1
2. x=-1
3. No solution
4. x=2
5. x= -6
Step-by-step explanation:
4(14-5)²÷2
HELP ASAP TY
Answer:
I think it's 162.
Step-by-step explanation:
Answer:
162
Step-by-step explanation:
Following PEMDAS
4(14-5)^2 ÷2
4(9)^2 ÷ 2
4(81) ÷2
324÷2
162
this question is about Ratio tables help I'm struggling
Answer:
Step-by-step explanation:
fguyy
Convert 3, into an improper fraction.
Answer:
3 5/9
Step-by-step explanation:
Answer:
30/10. An improper faction is a fraction with a numerator higher than the denominator. 3/1 is 3 in fraction form, multiply by 10, and you get 30/10. It would also have worked if you just answered 3/1 but hey!, we like to go above and beyond, right?
What is the slope of the line through (6,9) and (7, 1)
A. - 1 over 8
B. -8
C. 1 over 8
D. 8
Answer:
B
Step-by-step explanation:
The y values minus each other over the x values minus each other
What is the solution
Answer:
Infinite amount of solutions.
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define systems
y = -3x - 2
4y = -12x - 8
Step 2: Solve for x
Substitute in y: 4(-3x - 2) = -12x - 8Distribute 4: -12x - 8 = -12x - 8Add 8 to both sides: -12x = -12xDivide both sides by -12: x = xHere we see that x does indeed equal to x. Therefore, x can be any value.
∴ The systems of equations have infinite amount of solutions.
is -33 a whole number?
Answer/Step-by-step explanation:
-33 is not a whole number. A whole number is a number(positive) that contains no decimals nor fractions.
Tom the turkey is 2.5 feet tall and he casts a shadow that is 4 feet. The Thanksgiving Parade float version of Tom is 14 feet tall. How long is the shadow of the parade float?
Answer:
22.4 ft
Step-by-step explanation:
Given
[tex]Height = 2.5ft[/tex]
[tex]Shadow = 4ft[/tex]
Required
Determine the shadow of 14 ft Tom
The given parameters represents direct variation.
Let x represents the shadow of Tom.
So, we have:
When
[tex]2.5ft\ height = 4ft\ Shadow[/tex]
[tex]14ft\ height = x[/tex]
Cross Multiply:
[tex]2.5 * x = 14 * 4[/tex]
[tex]2.5 * x = 56[/tex]
Solve for x
[tex]x = 56/2.5[/tex]
[tex]x = 22.4[/tex]
Hence, the height of the shadow is 22.4ft
PLEASE HELPP WILL GIVE BRAINLIEST IF CORRECT!! no copied answers!
if x is 100 the units would be 96
if x is 102 the units would be 98.07
I am sorry for all the people I am making mad.
Answer:
who are you making mad??...
Step-by-step explanation:
Answer:
Step-by-step explanation:
A store pays $10 for each video game. The store’s percent of mark up is 20%. Which shows the retail price of the video game?
Answer:
$12
Step-by-step explanation:
If the value of 2x^3 is 2, then what is the value of ?
Answer:
34
Step-by-step explanation:
34
what is the answer to this? what does a equal?−6(−4+5)=−30+6
Answer:
I guess it would be 36?
Step-by-step explanation:
What is 4/6 dived by 3/12
Answer:
8/3
Step-by-step explanation:
For khan academy . Need answer immediately
Answer:
y = -2x+2
Step-by-step explanation:
Answer:
y = -2x+2
Step-by-step explanation:
Put the following in order from least to greatest .
98.9 90.9 .09 90.89
Place answer here:
Put the following in order from least to greatest
67.03 67.33 .09 .87
Place answer here:
Light travels about 186,000 mi/s.The function d(t)=186,000t gives the distance d(t),in miles, that light travels in t seconds. How far does light travel in 25 s
Answer:
5,580,000 miles
Step-by-step explanation:
d (30)= 186,000 x 30
Is the relation shown in the arrow diagram a function? Justify your answer.
Answer:
NO
Step-by-step explanation:
For a relation to be a function, every input (x-value) must have exactly one output (y-value) mapped to it or related to it.
This means, in a function, an input value cannot give you two different outputs.
Therefore, relation shown in the arrow diagram IS NOT A FUNCTION, because one of the inputs (x-value), which is 1.2, has two different outputs (y-value) that is mapped or related to it, which are 6 and 8.
A car travels at a constant speed of 58 miles per hour. Which equation can be used to find m, the total number of miles the car travels, in h hours?
Answer:
58xH=M
Step-by-step explanation:
here is an example car traveles 58mph how many miles in 3 hours
58x3=174mph
The required equation that represents the number of miles the car traveled in h hours is m = 58h.
Given that,
A car travels at a constant speed of 58 miles per hour. Which equation can be used to find m, the total number of miles the car travels, in h hours is to be determined.
Distance is defined as the object traveling at a particular speed in time from one point to another.
Here,
As, per the question,
Distance = speed × time
From the given,
Distance = m
Speed = 58 mile / hour
Time = h (in hours)
So,
m = 58 × h
m = 58h
Thus, the required equation that represents the number of miles the car traveled in h hours is m = 58h.
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which function is equivalent to h(x)=10x^(2+9x-1)
Answer:
h(x) = (10x - 1)(x + 1)
Step-by-step explanation:
Given
h(x) = 10x²+9x-1
Required
Get its equivalent
To do this, we simply factorize h(x)
We have that:
h(x) = 10x²+9x-1
Expand
h(x) = 10x² + 10x - x - 1
Factorize
h(x) = 10x(x + 1) -1(x + 1)
This gives:
h(x) = (10x - 1)(x + 1)
Hence, the equivalent of h(x) = 10x²+9x-1 is h(x) = (10x - 1)(x + 1)
Answer: h(x) = (x+1) (10x-1)
Step-by-step explanation: I got it correct
PLEASE HELP AS SOON AS POSSIBLE WILL GIVE BRAINLIEST
Simplify the expression (x^3-5x^2+7x-12)/(x-4) using long division. Show your work.
Answer:
Step-by-step explanation:
x^2 - x +3
___________
x-4 | x^3-5x^2+x-12
| x^3-4x^2
|__________
| -x^2 +x
| -x^2+4x
| __________
| -3x -12
-3x-12
|____________
0
If the expression be (x³ - 5x² + 7x - 12) / (x-4) then the remaining exists x² - x + 3.
What is meant by an expression?An equation is not the same as a mathematical expression. Expressions represent a group of integers, as opposed to equations, which represent a single number.
A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression. Two expressions joined by an equal sign form an equation.
The mathematical procedure for dividing large numbers into numerous smaller groups or parts is known as long division. The dividend is the number we divide into smaller groups, and the divisor is the number by which we divide. A problem can be solved by breaking it down into manageable steps.
Let the expression be (x³ - 5x² + 7x - 12) / (x-4)
[tex]$x^3-5 x^2+7 x-12=(x-4)\left(x^2-x+3\right)$[/tex]
simplifying the above equation, we get
[tex]$=\frac{(x-4)\left(x^2-x+3\right)}{x-4}$[/tex]
Cancel the common factor: x - 4
= x² - x + 3
Therefore, if the expression be (x³ - 5x² + 7x - 12) / (x-4) then the remaining exists x² - x + 3.
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