Question
Daniel expanded the expression as shown. What errors did he make? Select three options.
[tex]-2(-8x-4y+3/4)=-10x-8y-1 \frac{1}{4}[/tex]
A. The first term should be positive.
B. The second term should be positive.
C. The last term should be -1 1/2, not -1 1/4.
D. He divided -8 by -2 instead of multiplying -8 by -2.
E. He did not simplify the expression completely.
Answer:
Daniel's errors are (a), (b) and (c)
Step-by-step explanation:
To do this, we only need to solve the expression on the left.
So, we have:
[tex]-2(-8x-4y+3/4)=[/tex]
Open bracket
[tex]-2(-8x-4y+3/4)=-2 * -8x -2 * -4y - 2 * 3/4[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{2 * 3}{4}[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{6}{4}[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - 1\frac{1}{2}[/tex]
From the expression, we can see that:
The first term is positiveThe second is also positiveAnd the third term is[tex]- 1\frac{1}{2}[/tex]So, Daniel's errors are (a), (b) and (c)
The price of a suit decreased from $280 to $182 during a clearance sale.
What is the percent of decrease in the price?
Answer:
12%
Step-by-step explanation:
Answer:
%35
Step-by-step explanation:
You would take 182 and divide it by 280. That equals .65, you would take the 1 and subtract your answer to get .35 or %35.
Help plz giving out brianlest and 67 points please help
Kim bought a lawn chair that had a ticket price of $25.00. She ended up paying $26.50 after tax. If she were to buy a $40.00 patio table, how much would she have to pay after tax?
Answer:
She would have to pay $42.50, which is 6.25% sales tax.
can someone help me please
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9514 1404 393
Answer:
26. B(t) = 500·1.075^t; B(6) ≈ $772
27. G(t) = 70·0.72^t; G(3) ≈ 26 g
Step-by-step explanation:
The equation with the plus sign is used when the value is increasing. The minus sign is used when the value is decreasing. The 'a' in each equation is the initial value.
__
26. B(t) = 500·1.075^t
B(6) = 771.65
The balance after 6 years is about $772.
__
27. G(t) = 70·0.72^t
G(3) = 26.127
About 26 grams are left after 3 days.
Find the area.
2m
2m
3m
Answer:
5 m²
Step-by-step explanation:
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please help with this question we are live in class!!!
Answer:
C.
Step-by-step explanation:
Answer:
C.
Step-by-step explanation:
The answer is C.
He has 10 lb of oats. He makes 1/4 lb packages.
10 / 1/4 = 40
He can make 40 packets.
Answer: C.
Give two solutions of the inequality: x > 4
How do I solve this???
QUESTION : A family of four went out to dinner. Their bill came to $156.98 and they want to leave a 15% tip. How much the tip will be?
please help!!!!
Answer:
tip = $23.55
Step-by-step explanation:
156.98 x 0.15 = 23.55
Find the perimeter and the area of the figure.
6 cm
7 cm
9.5 cm
6.5 cm
The perimeter and the area of the composite figure are 29 centimeters and 49.5 square centimeters, respectively.
How to determine the perimeter and the area of the figure
In this problem we have the representation of a composite figure, the result of the combination of a rectangle and a triangle. The perimeter of the figure is the sum of the sides and the area of the composite figure is the result of suming the areas of the rectangle and triangle:
Rectangle
A = b · h
Triangle
A = 0.5 · b · h
Where:
b - Baseh - HeightA - AreaAnd the perimeter and the area of the composite figure are now computed:
Perimeter
p = 6 cm + 7 cm + 6.5 cm + 9.5 cm
p = 29 cm
Area
A = 0.5 · (6 cm) · (2.5 cm) + (6 cm) · (7 cm)
A = 7.5 cm² + 42 cm²
A = 49.5 cm²
To learn more on composite figures: https://brainly.com/question/23082031
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The decimal form of 1/3 is a repeating decimal. Are all the multiples of 1/3 also repeating decimals? Explain.
plz help
Answer:
No.
Step-by-step explanation:
1=3*1/3
2=6*1/3
3=9*1/3
......
Yes, All the multiples of 1/3 also repeating decimals.
What is Division method?
Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.
For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
The decimal form of 1/3 is a repeating decimal.
Now,
Since, The decimal form of 1/3 is a repeating decimal.
As, 1 / 3 = 0.33333...
And, Some of the multiples of 1/3 are;
1 / 3 = 1×2 / 3×2
= 2 / 6
= 0.33333....
And, 1 / 3 = 1×3 / 3×3
= 3 / 9
= 0.33333....
1 / 3 = 1×4 / 3×4
= 4 / 12
= 0.33333....
Thus, Yes, All the multiples of 1/3 also repeating decimals.
Learn more about the divide visit:
https://brainly.com/question/15330585
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Estimate the quotient 488.8 ÷ 48
Which two triangles are congruent by the ASA Theorem? Help with the correct answer please. Thank you! I picked A but that was wrong.
y= 12x+2
2y = x+4
and the step by step explanation
Answer:
[tex]x=0, y=2[/tex]
Step-by-step explanation:
Below! Credits to WolframAlpha!
Give the center and radius of the circle x2+y2=25
A) (2,3)r=5
B) (0,0)r=5
C) (0,0)r=25
D) (3,2)r=25
Answer:
B) (0,0); r=5
Step-by-step explanation:
A circle's standard form is (x-h)^2+(y-k)^2=r^2
The center is (h, k) and the radius is r.
So, here the center would be (0, 0) and the radius would be square root 25, or 5.
Answer:
(0,0) r=5
Step-by-step explanation:
The guy above me
2 × 10^12 red blood cells have a total mass of 90 grams.
Work out the average mass of 1 red blood cell.
Give your answer in standard form.
Answer:
2×10¹² cells → 90 g
mass of 1 red blood cell : 90÷(2×10¹²) = 45×10^-12 g = 4.5×10^-11 g
A soccer ball is kicked at a velocity of 25 meters per second. The following table shows the horizontal distance (in meters) at different angles of elevation (in degrees), ignoring wind resistance.
Angle of Elevation Distance Traveled
15 31.9
25 48.8
30 55.5
45 63.8
50 62.8
55 59.9
60 55.5
70 41.0
Using a quadratic regression calculator, determine the values of a, b, and c that can be used to write a quadratic function that provides a reasonable fit to the set of data. What is the value of c?
A). 8.5411
B). -8.5411
C). 85.411
D). -85.411
Answer:
-8.5411
Step-by-step explanation:
I just did this with the desmos calculator !
You work at Initech for a year. Your annual salary income is $38,000. You received a 3% salary increase. What is your NEW salary with the raise?
$49,400. If you multiply the income (38,000) by the salary increase (3%=0.3), then you get 49,400. Good Luck!
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Personal Math Trainer Lesson 6.2 - Homework - Homework
112131415161718
9
10
Gordon types 1,612 words in 26 minutes. Find the unit rate.
Gordon types
words per minute.
Answer:
nothing to do with your question just need points
Step-by-step explanation:
Answer:
62 Words Per Minute
Step-by-step explanation:
Big brain go thinky-think.
Simplify.
4(3y+2)-11
Answer:
12 y − 3
Step-by-step explanation:
4(3y+2)-11
Expand 4(3y+2): 12y+8
12y+8-11
=12y-3
What is the answers to 12M+7+M+20
Answer:
13M+27
Step-by-step explanation:
Answer:
13m +27
Step-by-step explanation:
12M+7+M+20
=12M+M+7+20
=13M+7+20
=13M+27
Which is a scaled copy of Polygon A?Identify a pair of corresponding sides and a pair of corresponding angles. Compare the areas of the scaled copies.
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete as the polygon A (and other possible polygons to select from) are not given. So, I will answer on a general term.
Assume that Polygon A is a rectangle of dimension 2ft by 5ft.
[tex]Length = 2ft[/tex] [tex]Width = 5ft[/tex]
Possible scaled copies can be gotten by multiplying the dimension of A by the same scale factor.
Take for instance, the scale factor k is:
[tex]k = 3[/tex]
A scaled copy of polygon A (say polygon B) is: 6ft by 15ft
This is gotten by:
[tex]Length = 2ft * 3 = 6ft[/tex] [tex]Width = 5ft * 3 = 15ft[/tex]
The area of A is:
[tex]Area = 2ft * 5ft = 10ft^2[/tex]
The area of B is:
[tex]Area = 6ft * 15ft = 90ft^2[/tex]
See attachment for polygons
Comparison
The area of B is greater than the area of B.
This method can be applied to scale factors
The temperature at midnight was -12 degrees F. The temperature rose to 28 degrees by noon.
What was the temperature change, t, during this time?
what's the circumference of a circle is C centimetres. which expression best represents the value of pie?
Answer:
C=2πr
Step-by-step explanation:
Answer:
ok
Step-by-step explanation:
Help i have 10 mins left
Answer:
I love you
Step-by-step explanation:
mhuuuuaaaaa good luck
what is the equivalent slope intercept for 5x = 4 + y
Answer: -5
Step-by-step explanation:
Answer:
y = 5x - 4
Step-by-step explanation:
Write an equation in slope intercept form from two points (5,5) (3,7)?
Answer:
y= -1x+10 or y= -x+10
Step-by-step explanation:
Hope this helps!
If 2 = 6, what is the degree measure of 5?
A. 80
B. 220°
C. 60°
D. 120°
Answer:
60°
Step-by-step explanation:
We know that 2 and 6 = 60 degrees, so we add 60 + 60 which equals 120, now subtract 120 by 180 and you get 60 degrees.
Parallel Lines
How do you know two lines are parallel?
Determine if any of the sets of lines are parallel. Justify your answer.
Line a passes through (-2, 4) and (3, 14).
Line b passes through (7, 2) and (-1, 3).
Line c passes through (3, 1) and (0, -5).
Line a: y= -13x+4
Line b: 3x-y=7
Line c: 6x + 2y = 12
Write the equation of the line parallel to x+4y = 6 that passes through the point (4, -8).
How do you know two lines are parallel?:
if the lines were to continue forever they would NEVER EVER touch they would just go STRAIGHT like train tracks
How long is the wire that supports the tree
10
5.6 ft
3.3 ft-