Answer:
45 mph
Step-by-step explanation:
3/4x60=45
If f(x) = 2x^2 +1, what is f(x) when x = 3?
O1
O7
•13
O 19
Answer:
19
Step-by-step explanation:
Plug 3 in for (x)
You'd have: 2(3)²+1
Solve. Do parentheses first so... 3²=9
You now have: 2(9)+1
Solve
18+1 = 19
what is the equation of this graph?
Answer:
C. x=4
Step-by-step explanation:
In this graph the x value never changes, it is always equal to four. In this line the slope is undefined and there is no y-intercept. For all straight vertical lines, the equation will be x equals to whatever x value it is.
What is the equation of the line that passes through the point (-4,-6)(−4,−6) and has an undefined slope?
Answer:
x = -4
Step-by-step explanation:
there is no y-intercept when slope is undefined
Undefined slope indicates a vertical line passing through the x-axis at the x-coordinate of any known point
Please help me with this
Answer:
A
Step-by-step explanation:
Need help solving #7 please
Answer:
False
Step-by-step explanation:
The equation says 21 is greater than or equal to 27, so it is false
4a I do not understand the process
Answer:
9/40
Step-by-step explanation:
He needs 5/8, he already has 2/5, so still needed is 5/8-2/5.
To add or subtract fractions, the denominators must be equal.
Simplest approach is to multiply them. 8 times 5 is 40, so 40 is the new denominator we need for both fractions.
So first we convert 5/8 to 25/40.
Then we convert 2/5 to 16/40.
Now we can subtract them:
25/40 - 16/40 = 9/40.
9/40 cannot be simplified so this is the final answer.
There are some basic rules you need to know to work with fractions. If above work is too fast, comment below for deeper explanation.
A family is calculating the cost for one semester of college next year. Each hour of class will cost $155. A scholarship gift of $64 can be deducted from costs. If h is the number of hours taken, and c is the total cost, which equation can be used to calculate the total tuition costs for a semester?
C=89h
C=155h+64
C=155h-64
C=-155h-64
Answer:
c=155h-64
Step-by-step explanation:
you mulitply the cost of the classes by the amount of hours, then you deduct the scholarship gift(64) from the total and get your total cost of the semester
Find the equation of a line that passes through the points (-1,3) and (3,5). Leave your answer in the form y = m x + c
Answer:
⇒
y
=
−
2
x
+
13
Explanation:
You can use point-slope form to determine the slope
m
:
y
2
−
y
1
=
m
(
x
2
−
x
1
)
Given:
⇒
p
1
=
(
x
1
,
y
1
)
=
(
3
,
7
)
⇒
p
2
=
(
x
2
,
y
2
)
=
5,3)
Finding the slope:
3−7=m(5−3)−4=2m⇒m=−2
Step-by-step explanation:
what is the greatest common factor between 20 and 25
Answer:
5
Step-by-step explanation:
If Tamair has $100 & gives $40 to her best friend Tsion, but Tsion gives $20 to Tamair, how much money does Tamair have left?
A) 90
B) 80
C) Tamair is broke
D) Tsion is broke
Answer:
B) 80
Step-by-step explanation:
Thats my bestie so dont mess with her or its gonna be a problem
5. - (m+) =
— Чт - 1=34
Answer:
The objective of this study was to examine the chronic effects on lower-body strength in resistance trained men of performing varying training volumes over 6
Step-by-step explanation:
Building A is 400 feet tall and Building B is 300 feet tall. Johnny is standing in between the two building. The angle of elevation from the point on the ground where Johnny is standing is 70 degrees to the top of Building A and 52 degrees to the top of Building B. How far apart are the two buildings
Answer:
389 feets apart
Step-by-step explanation:
Given that:
Building A
Height = 400feets
Angle of elevation = 70°
Building B:
Height = 300 feets
Angle of elevation = 52°
Distance from the foot of building A to where Jonny is standing = x (see attached picture)
Using trigonometry :
Tanθ = opposite / Adjacent
Tan 70 = 400/ x
2.7474774x = 400
x = 145.58809 feets
Distance from the foot of building B to where Jonny is standing = y (see attached picture)
Using trigonometry :
Tanθ = opposite / Adjacent
Tan 52 = 300/ y
1.2799416y = 300
y = 145.59
y = 234.38568 feets
x + y = distance between the two buildings
(145.58809 + 234.38568) feets
= 379.97377
= 380 feets apart
Please help me solve these problems! I'll give you all my brain points. IM DESPERATE!!!
:-;
Answer: kg
Step-by-step explanation:
what two numbers' sum=-4 and product=-2
Let a and b be the two numbers. Then
a + b = -4
a b = -2
Solve the second equation for b :
b = -2/a
Substitute this into the first equation:
a - 2/a = -4
Multiply both sides by a :
a² - 2 = -4a
Move 4a to the left side:
a² + 4a - 2 = 0
Use the quadratic formula to solve for a :
a = (-4 ± √(4² - 4(-2))) / 2
a = -2 ± √6
If a = -2 + √6, then
-2 + √6 + b = -4
b = -2 - √6
In the other case, we end up with the same numbers, but a and b are swapped.
I need help with number 21 please help!!!
Answer:
This is not a direct variation.Step-by-step explanation:
Direct variation:
mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other.
(y varies directly with x with a constant variation of k)
[tex]y=kx;\ k\neq0[/tex]
[tex]y=kx\qquad|\text{divide both sides by}\ x\\\\\dfrac{y}{x}=k\Rightarrow \dfrac{y}{x}=constant[/tex]
[tex]21.\\\\x=y+2\qquad|\text{subtract 2 from both sides}\\\\x-2=y\qquad|\text{divide both sides by}\ x\\\\1-\dfrac{2}{x}=\dfrac{y}{x}\ro\dfrac{y}{x}=1-\dfrac{2}{x}\neq constant[/tex]
help please and maybe explain the answer if you have time
Answer:
I would say that it's A 1/3 because it's the slope and that's what a rate of increase is
Find The Angle (See Image)
Answer:
do you how many there is 5 angles if thats what ur asking
Step-by-step explanation:
How much is 2% of 3.50
Answer:
.07
Step-by-step explanation:
3.50 * 2% = .07
or
3.50 * .02 = .07
can someone please help me out with this.
16. Keisha has a bag that contains 3 red, 2 orange, 1 yellow, and 2 purple marbles. She will
randomly choose 1 marble from the bag. What is the probability that Kelsha will choose
an orange marble?
O.
3
8
2
-bh
1
0
8
o
0
1
4
2
Answer:
1/4
Step-by-step explanation:
you add 3+2=5+2=7+1=8 which is the total amount 8. Then the question is asking What is the probability that Kelsha will choose
an orange marble then the orange marble is 2 which is 2/8. Then simplify 2/8 get to 1/4.
For nitrogen to be a liquid, its temperature must be within 12.78 °F of –333.22 °F. Which equation can be used to find the maximum and minimum temperatures at which nitrogen is a liquid, x?
The equation that can be used to find the maximum and minimum temperatures is
Answer:
For nitrogen to be a liquid, its temperature must be within 12.78 °F of -333.22 °F. The equation |x + 333.22 | = 12.78 can be used to find x, which represents the maximum and minimum temperatures at which nitrogen is a liquid.
Hope this helps! :D
Estimate and then solve 8,784 ÷ 61 = ___. answers: 133 134 143 144 I WILL MARK U BRAINLEIST IF ITS RIGHT
Answer:
The answer is 144
Step-by-step explanation:
Answer:
Ummm...
8,784/61=
144, D ??Use numerals instead of words. 5 less than a number is equivalent to 1 more than three times the number. The number is __ ?
Answer:
byeeeeeeeeeeeeeeeeeeeeee
Answer:
t uzi TV CRT currently
Fitzpatrick
Expand the expression 2(y + 5x)
Answer:
2y+10x
Step-by-step explanation:
distribute the 2 into the rest of the equation
Write two like terms using whatever variable(s) you'd like. Explain why these are like terms.
What is c?
1.51=c10
c = can someone explain I'm a little confused >
Answer:
0.151
Step-by-step explanation:
1.51=c10
we divide 10 by both sides
1.51/10 = c10/10
we cancel 10/10 and 1.51/10=0.151
so
c=0.151
tell me if u need a more clear explanation
Answer: 15 hope this help's and if not please give a bad rating
A 2-gallon jug of water costs $14.24. What is the price per quart?
Answer:
p
Step-by-step explanation:
p
James calculated the height of a cylinder that has a volume of 324 pi cubic inches and a radius of 12 inches. His work is shown below. V = B h Step 1: 324 pi = pi 12 squared h Step 2: 324 pi = 24 pi h Step 3: StartFraction 324 pi over 24 pi EndFraction = StartFraction 24 pi over 24 pi EndFraction h Step 4: h = 13.5 pi inches What is the first error that James made when calculating the height of the cylinder? In step 1, he substituted into the volume formula incorrectly. In step 2, he calculated 12 squared incorrectly. It should be 144 rather than 24. In step 4, the Pi should have canceled, making the correct answer 13.5 cm. James calculated the height of the cylinder correctly.
Answer:
I believe the answer is B let me know if it's wrong
Answer:
(B) In step 2, he calculated 12 squared incorrectly. It should be 144 rather than 24.
Jim is having a Halloween party for 60 children. He will give each child at least one candy bar. If each bag of candy contains 12
candy bars, which inequality gives the minimum number of bags, b, Jim will need to buy?
Yes
Answer:
5 bags of candy
Step-by-step explanation:
60/12= 5
Since there are 12 pieces of candy in each bag, 12*5= 60, so each kid can have 1 piece of candy.
Answer:
5<b
Step-by-step explanation:
fill in the blank to show an example of the symmetric property:
If JK = ST, then _ = __