1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
-BARSIC- [3]
3 years ago
13

Isme estimated that there are 50 students in the seventh-grade class. There are actually 40 students in the seventh-grade class.

Mathematics
1 answer:
melamori03 [73]3 years ago
7 0

Answer:

A) 25%

B) fraction: ⅗

Number: 24

Step-by-step explanation:

Error: 50 - 40 = 10

%error = 10/40 × 100 = 25%

60% = 60/100 = ⅗

⅗ × 40 = 24

You might be interested in
Solve the equation a=m-n for the variable n.
amid [387]
Our objective is to isolate n one side of the equation. The steps are as follows...

a=m-n
(Add n to both sides)
a+n=m-n+n
(The -n and +n cancel out, on the right side of the equation)
a+n=m
(Now subtract a from both sides)
a+n-a=m+a
(The +a and -a cancel out, on the right side of the equation)
n=m+a
7 0
3 years ago
Read 2 more answers
Predict how much money Apple will make in the year 2025?
Goshia [24]

If we project the EPS of Apple forward 10 years to 2025, using a 42% rate of growth, we would get projected EPS of $307.34 for 2025.

So in 2025, Apple will have per share earnings of $307.34.

6 0
2 years ago
Hellppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
const2013 [10]

Answer: y = 4 and x = 1

Step-by-step explanation:

when y is 2, x is 0.5

when y is 4, x is 1

                .(+ 2)   .(+ 0.5)

                .(+ 2)   .(+ 0.5)

                .(+ 2)   .(+ 0.5)

                .(+ 2)   .(+ 0.5)

the rule is that y is 4 times larger than x

5 0
3 years ago
Read 2 more answers
I need help with premetier and area for 7 8 9
SCORPION-xisa [38]

The answers to the three shapes are:

Figure 7; perimeter = 16.2mm, area = 12.64 square mm

Figure 8; perimeter = 15.2inches, area = 9.61 square inches

Figure 9; perimeter = 21.47yards,  area = 16.81 square yards

<h3>What is the perimeter of a shape?</h3>

Perimeter is the outside boundary of a plane shape.

Analysis:

for figure 7, perimeter = s + s + s = 3s = 3(5.4) = 16.2mm

                   Height of triangle = \sqrt{((5.4)^{2} - (2.7)^{2}  } = 4.68

            Area of triangle = 1/2 base x height = 1/2 x 5.4 x 4.68 = 12.64mm^{2}

For figure 8, perimeter = b + b + a = 5.9 + 5.9 + 3.4 = 15.2 inches

                     Height of triangle = \sqrt{(5.9)^{2}  - (1.7)^{2} } = 5.65inches

           Area of triangle = 1/2 base x height = 1/2 x 3.4 x 5.65 = 9.61inches^{2}

For figure 9, perimeter = b + a + c = 8.2 + 4.1 + 9.17 = 21.47yards

           Area of triangle = 1/2 x base x height = 1/2 x 8.2 x 4.1 = 16.81yards^{2}

In conclusion, the perimeter and area of the given shapes are:

Figure 7; perimeter = 16.2mm, area = 12.64 square mm

Figure 8; perimeter = 15.2inches, area = 9.61 square inches

Figure 9; perimeter = 21.47yards,  area = 16.81 square yards

Learn more about perimeter of plane shapes: brainly.com/question/2569205

#SPJ1

5 0
2 years ago
A 5.1-ft-tall person walks away from a 12-ft lamppost at a constant rate of 3.9 ft/sec. What is the rate that the tip of the per
nekit [7.7K]

Answer:

6.78ft/sec

Step-by-step explanation:

From the question, dx/dt= 3.9 ft/sec

We are looking for Dy/dt

From geometry,vof this case the relationship between x and y is needed here, there is two similar triangle that exhibited by the man and the lamb

12/y= 5.1/(y-x)

Then ,cross multiply, we have

12(y-x)=5.1y

12y-12x=5.1y

12y-5.1y=12x

6.9y=12x

y=( 12/6.9)x

Differentiating implicitly the bother sides with respect to t, we have

Dy/dt= ( 12/6.9)dx/dt

But dx/dt= 3.9 ft/sec

Then Dy/dt= ( 12/6.9)× 3.9

Dy/dt=6.78ft/sec

Hence, the rate that the tip of the person's shadow moves away from the lamppost when the person is 9 ft away from the lampost is 6.78ft/sec

CHECK THE ATTACHMENT FOR THE FIQURE

6 0
3 years ago
Other questions:
  • the first three steps in determining the solution set of the system of equations algebraically are shown in the table. y = −x2 +
    13·2 answers
  • Why do we multiply the area of a face by the number 6 to find surface area?
    11·1 answer
  • Circle the digit in the ones place. Then write even or odd. 36 is?
    5·2 answers
  • The coach pays $72 for 18 hamburgers. What is the cost per hamburger? What math concept do you use to solve the problem?
    6·2 answers
  • NGO has a collection of dimes and quarters with a total of $3.50. The number of dimes is 7 more than the number of quarters. How
    14·1 answer
  • Slope-intercept form for the line with y-intercept 5 and slope<br>-1/4​
    5·1 answer
  • Which function is represented by the graph below? graph begins in the second quadrant near the x−axis and increases slowly while
    14·2 answers
  • What is the area of the circle below?<br> 27 m<br> 424 m?<br> 848 m?<br> O 572 3 m<br> 0 729.1 m
    9·1 answer
  • Please help I have a test tomorrow.
    5·1 answer
  • I need help with geometry!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!