Shaunda answered 86% of the questions on her test correctly. If there were 50 questions on the test, how many did she NOT answer correctly?
Answer:
Shaunda answered 7 questions incorrect
Step-by-step explanation:
86% can be written as 86/100 or .86
When you multiply .86 or 86/100 by 50, you get 43 questions, which are how many questions she answered correctly.
50-43 = 7, so she answered 7 questions incorrectly.
Solve c - 19c
Please help with this. I don't know if it is -18c or not
Answer:
It is
Step-by-step explanation:
imagine that C is 1.
1 - 19x 1
1- 19
-18
the length of a rectangle is 1 1/8 cm longer than the width. The perimiter of the rectangle is 13 1/4 cm. What are the width and length?
Answer:
Length = 3 7/8cm
Width = 2 3/4 cm
Step-by-step explanation
Let the length of the rectangle by L
Let the width be W
If the length of a rectangle is 1 1/8 cm longer than the width, then;
L = W + 1 1/8
L = W +9/8
perimeter of the rectangle = 2(L+W)
perimeter of the rectangle = 2(W + 9/8 + W)
13 1/4 = 2(2W + 9/8)
53/4 = 4W + 9/4
4W = 53/4 - 9/4
4W = 44/4
4W = 11
W = 11/4
Hence the width of the rectangle is 11/4 or 2 3/4 cm
Recall that L = W + 9/8
L = 11/4 + 9/8
L = (2(11) + 9)/8
L = 31/8
L = 3 7/8cm
hence the length is 3 7/8 cm
Answer:
Length = 3 7/8cm
Width = 2 3/4 cm
What is the GCF Of 292 and 219
I need help with Geometry
Answer:
180 degrees since only two opposite sides are congruent in a rect, which would require you to flip it 180 degrees for it to map onto itself
Answer: 180 degrees
Imagine you had a long and flat rectangle. If we spin it around the center, we can rotate it 180 degrees so it lines up with its original image. The before and after is the same. We say it has rotational symmetry, and the angle of rotation is 180 degrees. This is the smallest rotational angle possible for rectangles that aren't squares.
. Laura and Alicia both exercise 5 days a week. Laura exercises for 30 minutes each day. Alicia exercises for 45 minutes each day. How much longer does Alicia exercise than Laura each week?. Laura and Alicia both exercise 5 days a week. Laura exercises for 30 minutes each day. Alicia exercises for 45 minutes each day. How much longer does Alicia exercise than Laura each week?
Answer: 1 hour 15 minutes
Step-by-step explanation:
From the question, we are informed that Laura and Alicia both exercise 5 days a week and that Laura exercises for 30 minutes each day. For the 5 days, she'll exercise for:
= 5 × 30 minutes
= 150 minutes
= 2 hours 30 minutes
Alicia exercises for 45 minutes each day. Fir the 5 days, she'll exercise for:
= 5 × 45 minutes
= 225 minutes
= 3 hours 45 minutes
We then calculate the difference in their exercise per week which will be:
= 3 hours 45 minutes - 2 hours 30 minutes
= 1 hour 15 minutes
ace autos sells cars and pay sue each month
(the question is in the picture)
- I could really use some help !! Please and thank you !! It’s about slope
I need help with this question..
Answer:
you have to right how aed and acd are simaler
Step-by-step explanation:
you should draw the triangle and define the AED and ACD and compare and contrast.
Mrs. Corazza paid $38.64 to fill up 12 gallons of gasoline in her car. What is the price for 1 gallon of gasoline?
a trail mix recipe calls for 3/4 a cup of raisins for every 5/8 of a cup of peanuts. how mant peanuts will be needed for 1 cup of rason?
Answer:
5/6 rup of raisins?
Step-by-step explanation
Sorry if that is wrong
Question Help
Marsha deposited $5,500 into a savings account 2 years ago. The simple interest rate is 4%. How
much money did Marsha earn in interest?
Substitute the values into the equation.
The earned $440 in interest depositing $5500 for 2 years at 4% rate of interest.
What is simple interest?
We know simple interest (SI) is given by SI = (p×r×t)/100, where
p = principle, r = rate in percentage, and t = time in years.
Simple interest is often a predetermined percentage of the principle amount borrowed or lent paid or received over a specific time period.
Given, Marsha deposited $5,500 into a savings account 2 years ago at 4% simple interest.
So, p = 5500, r = 4 and t = 2.
Therefore,
SI = (5500×4×2)/100.
SI = 440.
So, Marsha earned $440 in interest.
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3(4−7)=27
How do I solve this
Answer:
x = 4
Step-by-step explanation:
3(4x - 7) = 27
distribute the 3
(3 * 4x) + (3 * -7) = 27
12x + (3 * -7) = 27
12x - 21 = 27
add 21 to both sides of the equations
12x - 21 + 21 = 27 + 21
12x = 27 + 21
12x = 48
divide both sides by 12
12x/12 = 48/12
x = 48/12
x = 4/1
x = 4
ILL GIVE BRAINLIEST
the vertices of ΔABC are A(-5, 5), B(-2, 4), and C(-3, 3). If ΔABC is reflected across the line y = -1 to produce the image of ΔA'B'C', find the coordinates of the vertex B'
the coordinates of B' after a reflection across the line y = -1 are (__, __)
(type an ordered pair)
Answer:
B'(-2,-6)
Step-by-step explanation:
Hope this helps!!
The co-ordinates of B' after a reflection across the line y = -1 are (-2,-6)
What is co-ordinate?A pair of numbers that use the horizontal and vertical separations from the two reference axes to define the location of a point on a coordinate plane. A coordinate curve is created in two dimensions when one of the coordinates in a point coordinate system is kept constant while the other coordinate is permitted to change.
The coordinate curves may be referred to as coordinate lines if they are actually straight lines. The coordinate axes of Cartesian coordinate systems are lines that are orthogonal to one another. The coordinate curves may be universal curves for different coordinate systems. Curvilinear coordinate systems are those in which some coordinate curves are not lines.
x -co-ordinate of B' = -2
y-co-ordinate of B' = -6
The co-ordinates of B' after a reflection across the line y = -1 are (-2,-6)
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BASKETBALL The standard width of a high school basketball court is 50 feet. If 1 meter = 3.3 feet, what is the width of the basketball court in meters? Round to the nearest tenth, if necessary. 0.066 meters Check Answer Done and RC 2021 McGraw-Hill Education. All Rights Reserved. Privacy and Cookies | Terms of Use | Minimum Requirements | Platform Status
Answer:
15.2 meters
Step-by-step explanation:
50 ÷ 3.3 = 15.15
1 meter= 3.3 feet, so when BASKETBALL The standard width of a high school basketball court is 50 feet. then width is 15.15 meters of the basketball court in meters.
What is 1 meter in feets?1 meter= 3.3 feet
Given width of high school basketball is 50 feet and1 meter = 3.3 feet.,
We need to find the value of 1 feet.
1 feet= 1meter/3.3
1 feet=0.3030
Now to calculate 50 feet , we need to multiply 50 with 1 feet.
50*0.3030=15.15Meters
Therefore 15.15 meters is the width of the basketball court in meters.
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What shod be in the box 3/10 × (box)=1
Answer:
0.333333333
Step-by-step explanation:
0.333333333×0.3=1
3/10=0.3
PLEASE HELPP Determine if each proportion on the left is True or False. Answer options on the right side may be used more than once.
12/90 = 6/45 True
False
8/12 = 5/8
9/36 = 3/12
7/21 = 5/15
Answer:
12/90=6/45 and false is 8/12 = 5/8
dj
Please help me I’ll mark you brainiest
Answer:
BEC = 90°
BCE = 31°
ABD = 59°
Step-by-step explanation:
180 - 59 - 90 = 31
put an answer, get a brainliest,
im the mrbeast of brainly
Answer:
Shawty had rn- nonno
Step-by-step explanation:
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Sharon wants to buy a shirt that costs $20. The sales tax is 5%. How much is the sales tax? What is her total cost for the shirt?
Answer:
Sales Tax is $1
Total Price is $21
Step-by-step explanation:
The subtotal of the shirt is $20.
Find the 5% tax.
20 * .05 = 1
The sales tax is $1.
This means that the total price is $21.
Subtotal + Tax = Price
$20 + $1 = $21
Hope this helps.
I need to know how to know the answer and how to solve this
Answer:
the line equals 180 degrees...
(4q-1)+117= 180
-117 -117
4q-1=63
+1 +1
4q= 64
/4 /4
q= 16 degrees
Step-by-step explanation:
What is the slope of any line parallel to the y-axis in the
(x, y) coordinate plane?
F. -1
G. O
H. 1
J. Undefined
K. Cannot be determined from the given information
Answer:
A line parallel to the y-axis in the (x, y) coordinate plane is undefined.
Hence, option J is correct.Step-by-step explanation:
We know that the slope of a vertical line on a coordinate plane is undefined.
We also know that a line parallel to the y-axis is basically a vertical line.
Therefore, a line parallel to the y-axis in the (x, y) coordinate plane is undefined.
Hence, option J is correct.EXAMPLE
For example, considering the two points of a line
(x₁, y₁) = (1, 3)
(x₂, y₂) = (1, 5)
Determining the slope between (1, 3) and (1, 5)
Using the formula
Slope = m = [y₂ - y₁] / [x₂ - x₁]
= [5 - 3] / [1 - 1]
= 2/0
= ∞ or undefined
Thus, the slope of the line = m = undefined
Thus, the equation of a line parallel to y-axis passing through the points (1, 3) and (1, 5) will be:
x = 1Please also check the attached graph.
I REALLY NEED HELP WITH THIS!!! WILL GIVE BRAINLIEST!!!!!!!!!
A teacher conducts a survey of 70 students. She asks students about their favorite sport and about their favorite subject in order to determine the number of students who like English or volleyball. Some of the results are shown in the table.
What is the percentage of students in the survey whose favorite subject is English or whose favorite sport is volleyball?
the product of y and 38,, divided by 2
Answer:
I say that its 19 i think
Step-by-step explanation:
Answer:
(y×38)÷2
Step-by-step explanation:
I don't k if this is the answer you're looking for, but hope this helps!
Tom's Landscaping charges a flat fee for supplies, plus $25 per hour of work. Tom charged a customer $90 for a job that required 3 hours of work. Which equation would calculate the total amount Tom's Landscaping charges for a job that requires x hours of work?
Answer:
c=15+25x
Step-by-step explanation:
From the information given, you can say that the total amount Tom's Landscaping charges for a job would be equal to the flat fee plus the result of multiplying the charge per hour for the number of hours and this would be:
c=y+25x (1), where:
c is the total cost
y is the flat fee
x is the number of hours
Now, as you know that Tom charged a customer $90 for a job that required 3 hours, you can replace c with 90 and x with 3 and solve for y to find the flat fee:
90=y+25(3)
90=y+75
90-75=y
y=15
Finally, as you know that the flat fee is 15, you can replace this value in (1) to establish the equation that would calculate the total amount that Tom's Landscaping charges for a job that requires x hours of work:
c=15+25x
the number 18 is which percent of 15?
A 80%
B 83%
C 117%
D 120%
Answer: D 120%
Step-by-step explanation:
and this one please.
Answer:
x = (3 + 8y) / (y - 1)
Step-by-step explanation:
y = (x + 3) / (x - 8)
Make x the subject
y = (x + 3) / (x - 8)
Cross product
y * (x - 8) = (x + 3)
xy - 8y = x + 3
xy - x = 3 + 8y
Factorize the left hand side of the equation
x( y - 1) = 3 + 8y
Divide both sides by (y - 1)
x = (3 + 8y) / (y - 1)
A math club decided to buy t-shirts for its members. A clothing company quoted the following prices for the t-shirts. Which equation best describes the relationship between the total cost, y, and the number of t-shirts x?
A. Y= 6.75x
B. Y=9x
C. Y=2x-20
D. Y=6x + 15
Answer:
Its D
Step-by-step explanation:
The value of y equals the square root of x. Which of the following graphs reflect this relationship?
Answer:
The answer is A or the first image.
Evaluate this expression. (6.4 × 103) ÷ (3.2 × 102) Express your answer in scientific notation.
The expression (6.4 × 10³) ÷ (3.2 × 10²) can be simplified to 0.2 × 10² in scientific notation.
What is the Scientific Notation?Scientific Notation is a way of writing down in the easy form of very large or very small numbers.
To evaluate this expression, you can first divide the numerator by the denominator:
(6.4 × 10³) ÷ (3.2 × 10²) = (6.4 / 3.2) × (10³ / 10²)
Next, you can simplify the fraction in the numerator:
(6.4 / 3.2) × (10³ / 10²) = 2 × (10³ / 10²)
Finally, you can simplify the fraction in the exponent:
2 × (10³ / 10²) = 2 × 10¹
2 × 10 = 20 = 0.2 × 10²
Therefore, in scientific notation, the expression (6.4 × 10³) ÷ (3.2 × 10²) can be written as 0.2 × 10².
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