Answer:
D.
Step-by-step explanation:
The function f gives the temperature in degrees Celsius t hours after midnight.
Therefore, for the temperature at 12:00 AM (exactly midnight), we will have f(0).
For 1:00 AM, 1 hour after midnight, we will have f(1).
And for 12:00 PM (noon), we will have f(12).
We want to find the equation that represents the temperature at 1:30 PM.
1:30 PM is 13.5 hours after midnight or 1.5 hours after noon.
Therefore, the correct statement would be:
f(13.5)=20.
Hence, our answer is D.
Notes:
A and C are not correct because we do not use a colon for function notation. We input numerical values, not time.
Answer:
d
Step-by-step explanation:
Which equations are equivalent to the equation?
Answer:
B C D
Step-by-step explanation:
Felicia earns $800 a month. The table shows her monthly budget.
Monthly Budget
Expense Amount of Money
College savings $200
Car payment $275
Cell phone $125
Clothes $50
Food $100
Other $50
Which statement is supported by the information in the table?
F.Felicia spends 10% of her monthly budget on clothes and food.
G.Felicia spends 25% of her monthly budget on her car payment.
H.Felicia spends 20% of her monthly budget on college savings.
J.Felicia spends 50% of her monthly budget on her car payment and cell phone.
I'm not really good at math and I'm doing a test online right now and I am very confused.
Answer:
The answer is J.
Step-by-step explanation:
50% of 800 is 400.
125+275=400
Can someone help me with this
Answer:
For the first one it is 6 and the second is 53 degrees
Step-by-step explanation:
Just look at what the given values are and go from there
с
3
7
Solve for c.
= ✓ [?]
Enter the number that
goes beneath the
radical symbol.
C =
Enter
Answer:7.62, if not just 7.6 orr 58 read explanation lol
Step-by-step explanation:
i did the math and i doubled checked on a calculator :P,
cause you use the formula c= [tex]\sqrt{a^2+ b^2}[/tex] and in this case a^2 and b^2 is 3^2 and 7^2 and then you solve so its 9 and 49 and then add them which is 58 and then you find the square root of 58 which is 7.6 or in your case you put 58 under the square root
Will give BRAINLIEST if right!
How do I Write the vertex as an ordered pair for f(x) = x^2 + 2x - 3
Answer:
Vertex is (-1, -9)
Step-by-step explanation:
To find the x-value of the vertex, we use the formula
x
=
−
b
2
a
(This is considered the axis of symmetry).
a
=
1
and
b
=
2
with
c
=
−
8
(These are the numbers in order)
By substituting we get
x
=
−
(
2
)
2
⋅
1
, which simplifies to
x
=
−
1
.
Once you find x, substitute back into the equation to find y.
y
=
(
−
1
)
2
+
2
(
−
1
)
−
8
y
=
1
−
2
−
8
y
=
−
9
Putting the two numbers together you get the coordinates
(
−
1
,
−
9
)
.
If triangle DEF is an isosceles triangle with DE is congruent to EF, find x and the measure of each side
Step-by-step explanation:
Given that,
DE = 8x - 13
EF = 5x + 17
DF = x + 21
Also,
DE = EF
which means that,
8x - 13 = 5x + 17
8x - 5x = 17 + 13
3x = 30
x = 30/3
x = 10
Now,
DE = 8x - 13 = 8×10 - 13 = 80 - 13 = 67cm
EF = 5x + 17 = 5×10 + 17 = 50 + 17 = 67cm
DF = x + 21 = 10 + 21 = 31cm
help plzzzzzzz i really need it
Answer:
2n+2*3-6n
(-2*-3)+4n-(4n*2)
Want Brainliest? Answer quickly!
Answer:
76
Step-by-step explanation:
Given: ABC is a right triangle with right angle C. AB= 14 centimeters and mA = 33°
What is AC?
Enter your answer, rounded to the nearest tenth, in the box
Answer:
AC ≈ 7.6 cm
Step-by-step explanation:
I've attached a drawing of this problem below as a visual aid.
We know that this is a right triangle (one of the angles is 90°), one of the other angles (mA) is 33°, and the hypotenuse (AB) is 14 cm. We need to calculate the length of one of the other sides. We can use sine, cosine, or tangent.
Remember SOHCAHTOA?
→ soh (Sine = Opposite / Hypotenuse)
→ cah (Cosine = Adjacent / Hypotenuse)
→ toa (Tangent = Opposite / Adjacent)
The side we want to calculate happens to be adjacent to the angle mA (33°). So, we use cosine. We put in the values we know and solve for x, the missing side:
→ sin(33°) = [tex]\frac{x}{14}[/tex]
→ x = sin(33°) × 14
→ x ≈ 7.6
The length of AC is 7.6 centimeters.
Emily and Tammy each opened checking accounts on the same day, intending to withdraw money for weekly expenses. Emily opened her account with $710 and withdrew $35 per week. Tammy opened her account with $570 and withdrew $25 weekly. In how many weeks, w, will their account balances be equal? Group of answer choices
Answer:
15 weeks
Step-by-step explanation:
PLEASE HELP ME ITS VERY URGENT AND I DON'T UNDERSTAND HOW TO DO THIS!!!
Answer:
B and D also intersect at C
Step-by-step explanation: Instructions are unclear but it think that you are supposed to say the other pair that meets in a strait line
Answer:
Step-by-step explanation:
AC² = 25 + 9 - 15 cos120° = 34 - 15(- 0.5) = 41.5 ⇒ AC = √41.5 ≈ 6.442 cm ≠ EC
ΔABC doesn't congruent to ΔEDC
I need help with this please!
Answer:
Step-by-step explanation:
its 9
Unghiurile ∢AOB și ∢BOC sunt adiacente suplementare, iar OM, respectiv ON, sunt bisectoarele acestora. Fie BD ⊥ OM, D ∈ OM și BE ⊥ ON, E ∈ ON . Demonstrați că: a) patrulaterul BDOE este dreptunghi. b) OB ≡ DE .
Answer:
Following are the solution to this question:
Step-by-step explanation:
[tex]\angle AOB + \angle BOC = 180\\\\\angle MON = (\angle AOB + \angle BOC): 2 \\\\[/tex]
[tex]= 180: 2 \\\\=\frac{180}{2}\\\\= 90^{\circ}[/tex]
In point a:
[tex]\angle AOB = 60\\\\ \angle BOC = 120\\\\ \angle MON = (60 + 120): 2 \\\\[/tex]
[tex]= 180: 2 \\\\=\frac{180}{2}\\\\= 90^{\circ}[/tex]
In point b:
[tex]\angle BOC = 100\\\\\angle AOB = 80\\\\ \angle MON = (100 + 80): 2[/tex]
[tex]= 180: 2 \\\\=\frac{180}{2}\\\\= 90^{\circ}[/tex]
Functions can be defined using graphs, tables, and ordered pairs. What is the domain of a function?
The domain is any y-value.
The domain is all numbers.
The domain is the input.
The domain is the output.
Answer:
The domain is the input.
Step-by-step explanation:
The domain is the input, the independent value—it's what goes into a function. The range or y-value is the output and the dependent value is the outcome.
Answer:
I hope this helps.
Step-by-step explanation:
If you have 6 pieces of plywood
that are 4'x8', how many total
1xl pieces can you get out if
you use all of them?
Answer:192
Step-by-step explanation:
Calculate the area l*w or s*s
Divide the two areas to get the number of 1*1 from 1 plywood then multiply by their number which is 6 here
4*8=32/1=32*6=192
what is 9-3 divided by 1/3 +1? pls help me and i will give you a brainlist
Answer:
19
Step-by-step explanation:
1. Subtract and divide. 9 - 3 is 6, and 6 divided by 1/3 is 18, because whenever you divide by a fraction, you multiply by the reciprocal.
2. Add. 18 + 1 is 19.
Colin used 2 gallons of tan paint, 5 gallons of blue paint, and 1 gallon of green paint to paint the rooms in his house. What is the ratio of the number of gallons of green paint to the number of gallons of tan paint that Colin used?
Answer:
The ration of the number of gallons of green paint to the number of tan paint Collins used is 1 is to 2
Step-by-step explanation:
The given parameters are;
The number of gallons of tan paint = 2 gallons
The number of gallons of blue paint = 5 gallons
The number of gallons of green paint = 1 gallons
Therefore, the ration of the number of gallons of green paint to the number of tan paint Collins used = (The number of gallons of green paint Collins used):(The number of tan paint Collins used) = 1 gallons:(2 gallons) = 1:2
The ration of the number of gallons of green paint to the number of tan paint Collins used = 1 is to 2.
Rewrite
as a unit rate.
Answer:
rewrite what as the unit rate?
Step-by-step explanation:
What is the question
The sum of two numbers is 8. The difference of the same two numbers is 4. What are the two numbers?
Answer:
2 and 6
Step-by-step explanation:
2+6=8. 6-2=4.
Answer:
2 and 6
Step-by-step explanation:
5×(-5+6) distributive law
Answer:
5×(+1)=
5×1=5
Step-by-step explanation:
hope it helps
Answer:
Step-by-step explanation:
if you're going for distributive law then 5(-5)+5(6). -25+30. so 5
I TRIED SO MANY THINGS AND I JUST DO NOT UNDERSTAND WHAT I AM DOING, CAN I PLEASE GET SOME HELP QUICK. ITS SOLVING ALL SOLUTIONS FOR X.
I included a image please someone help I need help with my homework.
[tex]8. \: \: \: \: 2 {x}^{2} + 14 = 22 \\ \\ = > 2 {x}^{2} = 22 - 14 \\ \\ = > 2 {x}^{2} = 8 \\ \\ = > {x}^{2} = \frac{8}{2} \\ \\ = > {x}^{2} = 4 \\ \\ = > x = \underline{+}\sqrt{4} \\ \\ = > \green {\boxed{x = 2\: or \: (-2)}} \\ \\ \\ \\ \\ 9. \: \: \: \: 8 {x}^{2} + 19 = 54 + 3 {x}^{2} \\ \\ = > 8 {x}^{2} - 3 {x}^{2} = 54 - 19 \\ \\ = > 5 {x}^{2} = 35 \\ \\ = > {x}^{2} = \frac{35}{5} \\ \\ = > {x}^{2} = 7 \\ \\ = > x = \underline{ + } \sqrt{7} \\ \\ = > \green{\boxed{ x = \sqrt{7} \: or \: ( - \sqrt{7} )}} [/tex][tex]\\\\\\\\10. \: \: \: 7 {x}^{2} + 12 = 51 - 4 {x}^{2} \\ \\ = > 7 {x}^{2} + 4 {x}^{2} = 51 - 12 \\ \\ = > 11 {x}^{2} = 39 \\ \\ = > {x}^{2} = \frac{39}{11} \\ \\ = > {x} = \underline{+ }\sqrt{ \frac{39}{11} } \\ \\ = > \green{\boxed{ x = \sqrt{ \frac{39}{11} } \: or \: (- \sqrt{ \frac{39}{11} } )}}[/tex]
you pay $175 for 5 football tickets. How much will you for each (1) ticket?
Answer:
Step-by-step explanation:
175 ÷ 5 = 35
$35 per ticket
Answer:
35
Step-by-step explanation:
It's cuz you want to know how much one ticket costs right?
Sp do 175 divded by 5
You should get 35 as the answer!
A family has two cars. During one particular week, the first car consumed 40 gallons of gas and the second consumed 15 gallons of gas. The two cars drove a combined total of 1575 miles, and the sum of their fuel efficiencies was 55 miles per gallon. What were the fuel efficiencies of each of the cars that week?
Answer:
Fuel efficiency of first car = 30 miles/gallon
Fuel efficiency of second car = 25 miles/gallon
Step-by-step explanation:
Given that:
Fuel consumed by first car = 40 gallons
Fuel consumed by second car = 15 gallons
Total distance drove by the two cars combined = 1575 miles
Sum of their fuel efficiencies = 55 miles/gallon
To find:
The fuel efficiencies of each of the cars = ?
Solution:
Fuel efficiency of a car is defined as the ratio of distance traveled in miles to the number of gallons used by the car.
Let the distance traveled by first car = [tex]x[/tex] miles
So, the distance traveled by other car = (1575 - [tex]x[/tex]) miles
Fuel efficiency of first car = [tex]\frac{x}{40}[/tex] miles/gallon
Fuel efficiency of second car = [tex]\frac{1575-x}{15}[/tex] miles/gallon
As per given question statement:
[tex]\frac{x}{40}+\frac{1575-x}{15}=55\\\Rightarrow 15x+1575\times 40-40x=55\times 40 \times 15\\\Rightarrow 25x=30000\\\Rightarrow x =1200\ miles[/tex]
Distance traveled by first car = 1200 miles
Fuel used by first car = 40 gallons
So, fuel efficiency of first car = [tex]\frac{1200}{40} = \bold{30\ miles/gallon}[/tex]
Distance traveled by second car = 1575 - 1200 = 375 miles
Fuel used by second car = 15 gallons
So, fuel efficiency of second car = [tex]\frac{375}{15} = \bold{25\ miles/gallon}[/tex]
The price of a skirt was increased from $40 to $64. By what percentage was the price of the skirt
Increased?
Answer: 11 percent
Step-by-step explanation:
Answer:
24%
Step-by-step explanation:
A recipe for pasta dough say's use 150 grams of flour per large egg how much flour is needed if 6 larg eggs are used ???
3(2x – 14) = -3(-13 + x)
Answer:
9
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
AnswerX=9
Step-by-step explanation:
6x-42=39-3x
can you please tell me if i got these right
Answer:
They are right! Great job!!
There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?
[tex]\Large{\boxed{\tt{600 \: Students}}}[/tex]
Question:There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?To find:No. of studentsGiven:Total no. of classrooms = 20 students in each class= 30Answer:Total no. of students in school= Total no. of classrooms×students in each classTotal no. of students in school=20×30Total no. of students in school=600best of luck! ^_^
I WILL MARK BRAINLIEST!!
Answer:
Option 3
Step-by-step explanation:
3/2 times x - 3 = y can also be:
y=3/2 times x-3
-3 is the y-intercept. This is one of the points, (0,-3).
Now, you need to solve for x. Say y equals 0.
3/2 times x-3 will equal 0.
3/2 times 2 = 6/2 which equals 3. You can solve the equation now.
3/2 times 2 - 3 = 0
2 is the x-intercept. This is the other point in the line, (2,0).
So the answer is Option 3
Sarah was sitting in a seat at a baseball game when another ticket holder showed her she was in the wrong seat. The other ticket holder kindly told Sarah she needed to go 5 rows down and 3 seats to the right. Which rule describes the translation needed to put Sarah in the correct seat?
Answer: [tex](x,y) \to (x+3, y-5)[/tex]
The x turning into x+3 means she moves 3 seats to the right
The y turning into y-5 means she moves 5 rows down.