Answers
Related Questions
The students in the fourth grade sold 684 erasers for a fund-raiser. They sold 4 times as many erasers as the students in fifth grade. How many erasers did the students in 5 grade sell?
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so
684 / 4 = 171
answer
students in 5 grade sold 171 erasers
The students in fifth grade sold 171 erasers
How Many Erasers Did the Fifth Grade Students Sell?
The question asks us to find out how many erasers the students in fifth grade sold based on the sales of fourth graders. We are told that the fourth grade students sold 684 erasers and that this number is 4 times the amount sold by the fifth graders. To find the number of erasers sold by the fifth graders, we need to perform a division operation.
Setting up the equation, let x be the number of erasers the fifth-grade students sold. Thus, 4x = 684. To solve for x, we divide both sides of the equation by 4. Therefore, x = 684 / 4 = 171.
So, the students in fifth grade sold 171 erasers for the fund-raiser.
Jack is building a deck that is 8 ft by 27.63 ft. He has the base built; he just needs to cover the surface with wood. When he gets to the hardware store he finds sheets of wood that are four ft by eight ft. Use estimation to determine how many sheets of wood he should buy to cover the surface of the deck.
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A ( deck ) = 8 * 27.63 = 221.04 ft²
The area of the sheet of wood:
A ( sheet ) = 4 * 8 = 32 ft²
221.04 : 32 = 6.9 ≈ 7 ( we need a whole number )
Answer: He should buy 7 sheets of wood to cover the surface of the deck.
Jennifer is on a trip and travels a distance of 150 miles. she spends some of her time walking, and some of her time travelling by train. if she spends w hours walking and t hours travelling by train, what is the meaning of 3w in the equation below? 50t + 3w =150
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In the equation 50t + 3w = 150, 3w represents the distance Jennifer travels by walking in 3 hours.
Explanation:In the equation 50t + 3w = 150, the term 3w represents the distance Jennifer travels by walking. Since w represents the number of hours she spends walking, 3w represents the distance she walks in 3 hours. This is because the rate of walking is constant, so if Jennifer walks for 1 hour and covers a certain distance, she would walk 3 times that distance in 3 hours.
What are the amplitude, period, and midline of f(x) = 3 cos(4x − π) + 2?
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Answer:
The amplitude of the function is 3, period of the function is [tex]\frac{\pi}{2}[/tex] and midline of the function is 2.
Step-by-step explanation:
The given function is
[tex]f(x)=3\cos(4x-\pi)+2[/tex] .... (1)
The standard form of a Cosine function is
[tex]g(x)=a\cos(bx+c)+d[/tex] ... (2)
where, a is amplitude, period is [tex]\frac{2\pi}{b}[/tex] and d is midline.
From (1) and (2), we get
[tex]a=3,b=4,d=2[/tex]
The amplitude of the function is
[tex]a=3[/tex]
The period of the function is
[tex]\frac{2\pi}{b}=\frac{2\pi}{4}=\frac{\pi}{2}[/tex]
The midline of the function is
[tex]d=2[/tex]
Therefore the amplitude of the function is 3, period of the function is [tex]\frac{\pi}{2}[/tex] and midline of the function is 2.
In triangle def, FE = 13 and angle f equals 34. Find DF to the nearest tenth.
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Express 257.36 multiplied by 10 in scientific notation
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__________________________________________________________
What is the lateral surface area of the prism below?
1200 in2
2400 in2
1392 in2
2592 in2
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so, the lateral, sides, area, is just the area of the sides, well, the sides are just those three rectangles
now, the rectangle is the middle is length = 25 as well as the others, but we dunno the width, say width = c
[tex]\bf c=\sqrt{16^2+12^2}\implies c=\sqrt{256+144}\implies c=\sqrt{400}\implies c=20\\\\ -------------------------------\\\\ \textit{lateral area}\implies (25\cdot 16)+(25\cdot 12)+(25\cdot 20) \\\\\\ 400+300+500[/tex]
Evaluate 9 y 1 − y 0 9y1−y0 if y=−8 y=−8 .
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9y - y^0...when y = -8
9(-8) - 1......anything to the ^0 = 1
-72 - 1 =
-73 <==
Answer:
Step-by-step explanation:
to the nearest whole degree, what angle measure has a sine of .9762
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and if you just want the answer it is:
77.475 Degrees
and
it is 102.525 Degrees
One week, Katie Hopper earned the following commissions: Monday, $124; Tuesday, $88; Wednesday, $62; Thursday, $137; Friday, $195. Find her total amount of commissions for the week
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This is the answer⬆️
add them together:
124 + 88 + 62 +137 +195 = $606 total
05.02)
Two right triangles are graphed on a coordinate plane. One triangle has a vertical side of 2 and a horizontal side of 6. The other triangle has a vertical side of 10 and a horizontal side of 30.
Could the hypotenuses of these two triangles lie along the same line?
No, because they are not similar triangles
No, because one is larger than the other
Yes, because they are both right triangles
Yes, because they are similar triangles
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Answer:
Yes, because they are similar triangles
Step-by-step explanation:
I got the answer right on the test
how much would an 185 astronaut weigh on the moon?
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The length of a rectangle is 2 yd longer than its width. if the perimeter of the rectangle is 24 yd , find its area.
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Length = x +2
Perimeter = 24
Area = Width • Length = ?
Perimeter = 24 = 2(x +2) + 2(x)
= 2x + 4 + 2x
= 4x + 4
= 20 = 4x
= 5 = x
Width = x = 5, therefore Length = (5) + 2 = 7
Area = Width • Length = 5 • 7 = 35
Area = 35 yards
Which system of inequalities is represented by the graph?
y ≤ –1/2x
y > –1
y ≥ –1/2x
y < –1
y < –1/2x
y ≥ –1
y > –1/2x
y ≤ –1
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ur other line has a y int of (0,0), it has a slope of -1/2 ....it has a dashed line...it is shaded below the line.....so the equation for this line is : y < -1/2x
so ur answer is : y > = -1 and y < -1/2x
the answer is D)y ≥ 2x
y > 1
on ed
just took the test
Convert 7.2 ⋅ 10–3 to standard form.
72,000
7,200
0.0072
0.00072
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................................
0.0072 hope that helped
Solve the inequality -2x is less than or equal to 3x + 1 is less than or equal to 10
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[tex] \frac{-2x-1}{3} \leq x \leq 3[/tex]
this is what i understood from what you typed...
The height of the oversized container is 3 m it's diameter is 2 m what is its area?
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i think
( 3.14×radius×radius) + (2×3.14×height)
thus,
(3.14×1×1) + (2×3.14×3)
=21.98 m
In which quadrant is sin positive and tan positive?
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Sin corresponds to the y-value, so sin would be positive at Quadrants 1 and 2.
Tan, which is y/x (sin/cos), is positive at Quadrants 1 and 3.
So at quadrant 1 is where both sin and tan are positive.
HELP PLEASE THANKS:(
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4+3y=13
3y=9
y=3
The answer is B
Write 121 raised to the one-half power equals 11 as a logarithmic function
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so
[tex]121^\frac{1}{2}=11[/tex] translates to [tex]log_{121}(11)=\frac{1}{2}[/tex]
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 3x + 2y = 6 x - y = 2
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Hope it helps.
In the diagram, which two points are shown to be collinear?
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In the given diagram, the points that are shown to be collinear are H and E.
Collinearity in geometry refers to the condition where three or more points lie on the same straight line. In this case, points H and E are collinear as they lie on the same straight line, which is represented by a vertical double-headed arrow passing through them.
The diagram consists of two parallelograms, labeled 'I M' and 'E P', with three points inside each. In the parallelogram 'I M', the points are labeled as I, H, and J from top to bottom. Similarly, in the parallelogram 'E P', the points are labeled as F, E, and G from top to bottom. Among these points, only H and E share the same straight line, making them collinear. The other points do not share this line and hence are not collinear with H and E. This concept is fundamental in understanding geometric relationships and properties.
Micah takes a job with a starting salary of $78,000 for the first year. He earns a 4% increase each year. How much does Micah make over seven years? $567,840 $616,067 $718,710 $718,499
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Fv=pmt [((1+r)^(t)-1)÷r]
Fv how much he made ?
PMT yearly salary 78000
R rate of increases 0.04
T time 7 years
Fv=78,000×(((1+0.04)^(7)−1)÷(0.04))
Fv=616,066.96 round your answer to get 616067
Answer:
b
Step-by-step explanation:
When factored, the trinomials x^2-2x-15 and x^2-9x+20 have one binomial factor in common. What is this factor?
1. x-7
2. x+7
3. x-5
4. x+5
Answers
(x-5)(x+3)
Proof:
-5+3=-2
-5*3=-15
x^2-9x+20
(x-4)(x-5)
Proof:
-4-5=-9
-4*-5=20
Final answer: (x-5)
can someone help me with this factoring problem? I forgot how to factor.
Factor completely −3x2 + 6x − 9.
−3(x2 − 2x + 3)
−1(x2 − 6x + 9)
−3x(x2 − 2x + 3)
−3(x2 + 2x − 3)
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= -3(x^2 - 2x + 3)
answer
-3(x^2 - 2x + 3) first one
-3(x^2-2x+3)
To check, multiply what you took out by each term in the trinomial and make sure it's the same
-3*x^2=-3x^2
-3*-2x=6x
-3*3=-9
What is the length of the third side of the right triangle?
( Best explained and correct answer gets brainliest. )
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6^2 + 3^2 = x^2
36 + 9 = x^2
45=X^2
X= sqrt(45) = 3squareroot5
answer is A
If s is a sequence of consecutive multiples of 3, how many multiples of 9 are there in s? (1) there are 15 terms in s. (2) the greatest term of s is 126.
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[tex]\it a_{15} =126=3\cdot42 \\\;\\a_1=3n=? \\\;\\ 3, 6, 9, 12, ... , 3n, ..., 3\cdot42 [/tex]
[tex]\it 42-(n-1) =15 \Rightarrow n-1=42-15=27 \Rightarrow n=28 \Rightarrow \\\;\\ \Rightarrow a_1=3\cdot28= 84[/tex]
Now, we have the sequence :
[tex]\it a_1= 3\cdot28 = 84 \notin M_9 \\\;\\ a_2= 3\cdot29 = 87 \notin M_9 \\\;\\ a_3= 3\cdot30 = 90 \in M_9 \\\;\\ \vdots[/tex]
[tex]\it a_{15} =3\cdot42=126 \in M_9 \\\;\\ 90\leq9\cdot k\leq126 |:9 \Rightarrow 10\leq k\leq14 \Rightarrow k \in \{10, 11, 12, 13, 14\}[/tex]
It implies 5 multiples of 9
At a glance : {90, 99, 108, 117, 126}
Write the equation of the line that passes through the points (-2,3) and (-2,5)
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If BC = 4.5, CD = 7.7, and AD = 16.7, find AB to the nearest tenth.
A. 2.1
B. 28.6
C. 9.8
D. 2.2
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[tex]9.8[/tex]
EXPLANATION
Triangle ABC is similar to triangle ADC,
therefore the corresponding sides sides are in the same proportion.
[tex] \frac{AB}{AD} = \frac{BC}{CD} [/tex]
We substitute the values to obtain,
[tex] \frac{AB}{16.7} = \frac{4.5}{7.7} [/tex]
We multiply through by
[tex]16.7[/tex]
to get,
[tex] AB= \frac{4.5}{7.7} \times 16.7[/tex]
This simplifies to give us,
[tex] AB= 9.75940259402....[/tex]
To the nearest tenth,
[tex] AB= 9.8[/tex]
The correct answer is C
a lab researcher wants to find out whether mice will run through a maze quicker during the day or at night, after training. He has 100 mice available. He randomly assigns 50 of them into ech group. He trains the first group to run the maze ar 9:00am and trains the sevond group to run the maze ar 9:00 pm. Each mouse is trained the same way, and the last 3 years run times are recored. Describe what is being measured in this experiment and what variable is being manipulated?
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In this case, since the run times are the one being compared and recorded, therefore the data being measured in the experiment is the run times.
The difference of the two groups of mice is the time of the day that the mice run, day or night. Therefore the variable being manipulated is the time of the day.