Bianca makes an error when she tries to write an expression equivalent to
12 + 15(3 - y) - 10y. What is the error? Fix Bianca's error.
I NEED HELP ASAPPPPPP!!!
Answers
Answer:
57 - 25y
Step-by-step explanation:
when 15 was distributed it should be '45 - 15y' instead of '45 + 15y'
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The correct expression is
12 + 15(3 - y) - 10y
12 + 15 x 3 - 15y - 10y
12 + 45 - 15y - 10y
57 - 20y
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Step 1:
12 + 15(3 - y) - 10y
Step 2:
12 + 15 x 3 - 15y - 10y
Step 3:
12 + 45 - 15y - 10y
Step 4:
57 - 20y
Now,
We see that,
There was an error in step 2 where instead of -15y, +15y was written.
Thus,
The correct expression is
12 + 15(3 - y) - 10y
12 + 15 x 3 - 15y - 10y
12 + 45 - 15y - 10y
57 - 20y
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ5
Related Questions
What is the quotient of 1,275 divided by 5
Answers
Answer:
225
Step-by-step explanation:
1275 / 5 = 225
I know this because five can go into the 1275 225 times
Answer:255
Step-by-step explanation:
I’m not completely sure what your asking but 1275 divided by 5 is 255
Kacey is making a bracelet that is 8 inches long. She uses 1 green bead at each end of the bracelet. She also uses 1 green bead every 2 inches
between the two ends. How many green beads does she use?
A. 16
B. 7
C.5
D.4
Answers
Answer:
The answer would be C. 5
Step-by-step explanation:
what is the arc of a semicircle with a diameter of 8?
Answers
Step-by-step explanation:
88/7 units
All of the following monomials are factors of 24x^3z^2–6x^4z^3+12x^2z except:
F. x^2z
G. 3
H. 3x^2z
J. 4xz
K. 6xz
Answers
Answer:
G
Step-by-step explanation:
R1 Homework EXTRA CREDIT
R.7-1.1
A set of seven hockey sticks costs $196. What is the cost of one hockey stick?
Answers
Answer:
28
Step-by-step explanation:
7x=196
divide by 7
x=28
Answer:
28
Step-by-step explanation:
7x=196
divide by 7
X = 28
Leslie wants to build a 1,200 piece jigsaw puzzle. The completed puzzle will be in the shape of a rectangle that is 40 pieces in length by 30 pieces in width. Each piece is a square with an area of 0.25 in2. If Leslie wants to build the puzzle on a table that is at least 6 inches larger on all four sides than the complete puzzle, so that it makes a 6-inch border around the puzzle, what are the minimum dimensions of the table that she will need?
Answers
Answer:
If the area of each square piece is 0.25 in, that means that the dimensions must be 0.5 in by 0.5 in. Because the puzzle is 40 pieces by 30 pieces, that gives dimensions of 20 in by 15 in. Adding 6 inches on all four sides of the puzzle, we will have 32 in by 27 in for our minimum table dimensions.
Step-by-step explanation:
If the area of each square piece is 0.25 in, that means that the dimensions must be 0.5 in by 0.5 in. Because the puzzle is 40 pieces by 30 pieces, that gives dimensions of 20 in by 15 in. Adding 6 inches on all four sides of the puzzle, we will have 32 in by 27 in for our minimum table dimensions.
Which of the following are statistical questions? How many text messages did you send today? What are the ages of the students in Mark’s school? How many days are in a year? How many teeth does Fred have in his mouth? A. Only IV B. Only II C. Only III D. Only I
Answers
Answer:
Only 2
Step-by-step explanation:
ill mark brainlist plss help
Answers
Answer:
C. 99 yd^2
Step-by-step explanation:
The formula for solving for area of a triangle is 1/2*b*h.
18*11=198
198/2=99
Please help solve this!
Answers
By dropping a perpendicular from the top of the isosceles triangle to the base and using the Pythagorean Theorem we quickly determine that the height of the triangle is 4.
Therefore the area of the isosceles triangle is
6•4/2=12
However, we can split the isosceles triangle into three separate triangles indicated by the red lines in the diagram below. Because the radius always meets a tangent at a right angle the area of each triangle will be the length of the side multiplied by the radius of the circle. So the total area of the isosceles triangle is given by
6r/2+2•5r/2=8r=12
8r=12
r=12/8
r=3/2
Given that m*n = 3m-n/2 , evaluate 6*(3*1)
Answers
Answer:
24
Step-by-step explanation:
m × n = 3m - n ÷ 2
6 × (3 × 1)
6 × 4
24
What is the slope of the line?
Answers
Answer:
Slope: -1
Step-by-step explanation:
(0, -2) and (1, -3)
m= (y2-y1)/(x2-x1)
m= (-3+2)/(1-0)
m= (-1)/(1)
m = -1
PLEASE HELP which number line represents the solution to |x-21|<3
Answers
Answer:solutions, search about Complex Numbers
Step-by-step explanation:−2||=−6
−
2
|
x
|
=
−
6
||=−6−2=3
|
x
|
=
−
6
−
2
=
3
The value inside the absolute value brackets could be positive or negative and give a positive result.
()=3
(
x
)
=
3
OR −()=3
−
(
x
)
=
3
=3
x
=
3
OR =−3
x
=
−
3
On a number line, that would translate to a number line with two dots on it, one at -3 and one at +3.
x equal to 24 and it c
Simplify.
2x + 6x2
10 + 4x2 – 3x + (-6) =
Answers
Answer: 14x,4+4x ^2-3x
Step-by-step explanation:
1. Simplify 6x\times 26x×2 to 12x12x.
2x+12x,10+4{x}^{2}-3x-6
2x+12x,10+4x
2
−3x−6
2 Simplify 2x+12x2x+12x to 14x14x.
14x,10+4{x}^{2}-3x-6
14x,10+4x
2
−3x−6
3 Collect like terms.
14x,((10-6)+4{x}^{2}-3x)
14x,((10−6)+4x
2
−3x)
4 Simplify (10-6)+4{x}^{2}-3x(10−6)+4x
2
−3x to 4+4{x}^{2}-3x4+4x
2
−3x) Hope that helps
I really need help with this trigonometric function, i am struggling and it would mean a lot.
Answers
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions that relate an angle of a right-angled triangle to ratios of two side lengths. There are six trigonometric ratios, sine, cosine, tangent, cosecant, secant and cotangent. These six trigonometric ratios are abbreviated as sin, cos, tan, csc, sec, cot.
I would suggest calculator soup they have a trigonometric function calculator
And here is how to solve trigonometric function,
Put the equation in terms of one function of one angle.
Write the equation as one trig function of an angle equals a constant.
Write down the possible value(s) for the angle.
If necessary, solve for the variable.
The number of calories in a one ounce serving of a certain chicken sandwich is a random variable with mean 110 calories. The number of calories in a full cup of lemonade is a random variable with mean 140 calories. For lunch, you eat one ounce of the chicken sandwich and LaTeX: \frac{1}{2}1 2 cup of lemonade. Let K be the random variable that represents the total number of calories in this lunch. The mean of K is
Answers
Answer:
The mean of K is 180 calories.
Step-by-step explanation:
Mean of a sum of normal distribution:
The mean of a sum of normal distributions is the sums of the mean.
In this question:
Lunch:
One ounce of chicken sandwich, with mean 110 calories.
Half a cup of lemonade, with mean 140/2 = 70 calories.
Let K be the random variable that represents the total number of calories in this lunch. The mean of K is
110 + 70 = 180 calories
The mean of K is 180 calories.
What is 4xj-jxjxj+15
Answers
Answer:
The answer is j+15.
Step-by-step explanation:
4j-3j+15
=j+15
Help please, just guess and you will be reported show your work.
Answers
Answer:
triangle and conceit is the total and correct
07:5
Which pair of angles must be supplementary?
VX
2.
6
3
4
5
21 and 26
22 and 25
0 25 and 24
Z6 and 22
Answers
Answer:
∠1 and ∠6
Step-by-step explanation:
Supplementary angles are two or more angles added together make 90°.
Right angles indicated by the small square at the corners.
∠2 and ∠5 are right angles.
So, any pair with ∠2 and ∠5 are not supplementary.
The only pair of angles that are not associated with ∠2 and ∠5 is: ∠1 and ∠6.
why is angel 6 congruent to angel 2
Answers
Step-by-step explanation:
Angle 6 is only equal to angle 2 if the lines are parallel. The horizontal line is being intersected by two lines, if they are parallel then <6 = <2. They are equal because the horizontal line is straight, meaning anything crossing it that are parallel wil creat equal angles
-6 + w/4 = -2 simplified as much as possible
Answers
Answer:
sln
-6+w/4=-2
w/4=-2+6
w/4=4
w=4x4
w=16
A recipe for 12 scones requires 2 teaspoons of baking powder and 240 g of flour. If a larger number of scones are made, using 540 g of flour, how much baking powder is needed?
Answers
Answer:
45 teaspoons of baking powder
Step-by-step explanation:
Let x = amt of baking powder needed.
2/240 = x/540
240x = 1080
x = 45 teaspoons of baking powder
What is the volume of a triangular pyramid that is 10 in. tall and has a base area of 9 square in.?
Answers
Step-by-step explanation:
anewer is 30 cubic inches.
When solving an inequality that results in negative x, we must reverse the inequality and reverse the signs of all the numbers.
True or false please help
Answers
Answer:
trust your instincts
Step-by-step explanation:
im on a chalnge i will let you decide your destiny on your own
*
Write the equation in standard form using integers.
y=-4/5x+3
Answers
Answer:
4x + 5 y = 15
Step-by-step explanation:
What is the mapping rule for finding the coordinates of a figure that is
Answers
Answer:
A) x, y turns into -x, -y
B) x, y turns into -y, x
find the measure of each angle indicated
Answers
Answer:
D) 111
Step-by-step explanation:
Internal Alternate angle thm states 111 and x are equal:
? = 111
Answer:
D
Step-by-step explanation:
its the same as the angle that was given to you
Find the area under the standard normal curve that lies outside the interval between z = -2.16 and z = 2.14
Answers
Answer:
The area is 0.0316
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X
Find the area under the standard normal curve that lies outside the interval between z = -2.16 and z = 2.14
Below z = -2.16 or Above z = 2.14
Below z = -2.16
z = -2.16 has a pvalue of 0.0154, which means that this area is 0.0154
Above z = 2.14
z = 2.14 has a pvalue of 0.9838, which means that this area is 1 - 0.9838 = 0.0162
Total:
0.0154 + 0.0162 = 0.0316
The area is 0.0316
3 (7/5x+4) -2 (3/2 - 5/4x)
Answers
Answer:
I know the mixed number will be 1 because u subtracts that's all I know and just subtracts the fractions ok sorry
Answer:
[tex]6\frac{7}{10}x + 9[/tex]
Step-by-step explanation:
Step 1: Distribute
[tex]3(\frac{7}{5}x + 4)-2(\frac{3}{2}-\frac{5}{4}x)[/tex]
[tex](3*\frac{7}{5}x) + (3 * 4) + (-2 * \frac{3}{2}) + (-2 * -\frac{5}{4}x)[/tex]
[tex]\frac{21}{5}x + 12 + \frac{-6}{2} + \frac{10}{4}x[/tex]
Step 2: Combine Like Terms
[tex]12 - 3 + \frac{21}{5}x + \frac{5}{2}x[/tex]
[tex]9 + (\frac{21*2}{5*2}x + \frac{5*5}{2*5})[/tex]
[tex]9+(\frac{42}{10}x + \frac{25}{10}x)[/tex]
[tex]9+\frac{67}{10}x[/tex]
[tex]6\frac{7}{10}x + 9[/tex]
Answer: [tex]6\frac{7}{10}x + 9[/tex]
Please let me know if you need to make it more clear! :)
A $240.00 item is marked down by 25%.
What is the new cost of the item?
Round to two decimals if needed.
$
Answers
Explanation:
240 X 0.25 = 60
240 - 60 = 180
Find the factor pairs of the following number: 70
Answers
Answer:
70 = 7 x 5 x2 x 1. When asked to find out the total number of factors of 70, you have to write down all the multiples of 70 such as, Factors of 70 are: 1, 2, 5,7,14, 10, 35 and 70 = 8 factors.