Answer:
1. x<7/2
2. x>4
Step-by-step explanation:
hope this helps
Laura Simplified the expression 5x[(3.14+4.16)×9+2] as shown
Step 1: 5x[7.3x9+2]
Step 2. 5x[7.3x11]
Step 3. 5x80.3
Step 4. 401.5
Questions:
A. In what step did Laura first make a mistake?
B. Explain what the mistake was using mathematical detail academic language
C. Show your step by step work using mathematical detail and academic language to simplify the expression
D. What is the correct answer to the expression
Answer and Explanation
__________________________________________________________
A. Step 2
B. Step 2 is wrong because multiplying is first before adding, and Laura added before multiplying and got 401.5 instead of 338.5
C. [tex]5\cdot\left(\left(3.14+4.16\right)\cdot9+2\right)[/tex] = [tex]?[/tex]
[tex]5\cdot\left(\left(7.3\right)\cdot9+2\right)[/tex] = [tex]?[/tex]
[tex]5\cdot\left(65.7+2\right)[/tex] = [tex]?[/tex]
[tex]5\cdot\left(67.7\right)[/tex] = [tex]?[/tex]
D. [tex]338.5[/tex]
__________________________________________________________
Hope this helps! <3
__________________________________________________________
The length of a man's shadow is directly proportional with his height.
At the same time of day, a man who is 1.8 meters tall casts a 25.2
meter shadow and his son casts a 21 meter shadow. What is the
height of the man's son, in meters? If necessary, round to the nearest
tenth.
Answer:
should be 1.8
Step-by-step explanation:
Answer:
parn
Step-by-step explanation:
Brainliest or report?
Find the domain of the graphed function
Answer:
A I see the most reaon able answer from other
7.501 in expanded form
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful if the average time spent on the deliveries does not exceed 30 minutes. What type of tail is this test using?
Answer:
Right tailed test
Step-by-step explanation:
The null hypothesis is:
[tex]H_o: \mu \le 30[/tex]
The alternative hypothesis is:
[tex]H_a: \mu > 30[/tex]
This is a right-tailed test since the alternative hypothesis is greater than 30
Suppose the level of significance is 0.05 and we are given a p-value less than 0.05.
Then, we reject the null hypothesis.
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP ME I DO ANYTHING JUST HELP *95 POINTS) PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ ALSO SHOW YOUR WORK
1 ) Use the expression below to answer parts (a) and (b)
5x-3x-4y+ 1/3 (6x-12y)
a) Simplify the expression by combining like terms. (SHOW YOUR WORK.)
QUESTION B IS A IMAGE
C .In the space below PROVE how you know your expressions are equivalent to the original expression.
Answer:
54x-87y=648y=x
Step-by-step explanation:
hope this helped
HELP ASAP!!!
Taylor starts with $117 in her bank account. She deposits (puts in) $12.50 each week. What
expression can be used to determine her bank account balance after w weeks?
Answer:
117-12.50=w
Step-by-step explanation:
branliest plzzzzz
Witch value of x makes the equation 24x+16=-2(6x-8) true?
Answer:
X = 0
Step-by-step explanation:
Because if X equaled 0 then both sides would be equaled to 16.
You work as a cashier for a grocery store and earn $5 per hour. You also mow lawns and earn $10 per hour. You want to earn at least $50
per week, but would like to work no more than 10 hours per week.
Which system of inequalities, along with y0 andx
0, would you use to solve the real-world problem?
The required inequalities are x + y ≤ 10 and 5x + 10y ≥ 50
What is an inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given that, You work as a cashier for a grocery store and earn $5 per hour. You also mow lawns and earn $10 per hour. You want to earn at least $50 per week, but would like to work no more than 10 hours per week.
Let, you work at grocery story (x), and you work mowing lawns (y)
You want to work no more than 10 hrs
So, first inequality will deal with hrs.
x + y ≤ 10....(i)
A less than or equal to sign tells that you do not want to work more than 10 hrs, but you can still work 10 hrs, so we include the equal sign as well.
And,
Grocery store (x) earning $5 per hr and lawn mowing (y) earning $10 per hr, making at least $50...
Now we will make an inequality dealing with the $
5x + 10y ≥ 50.....(ii)
A greater than or equal to sign tells that, you want to make 50 or more, so we include the equal sign.
So, the inequalities are :
x + y ≤ 10
5x + 10y ≥ 50
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LIGHTING Kyle is buying strands of outdoor lights for his luau. The total cost of the strands can be modeled by the function f(c) = 8.97c. He received an email with a coupon code to receive $5 off his online purchase. A. Write a function g(c) that represents the cost of purchasing strands of lights with the $5 discount. B. Find the cost of purchasing 6 strands of lights before and after the discount. How about this one anyone
Answer:
Step-by-step explanation:
A. Function before discount:
f(c)= 8.97c
This means that cost per strand of outdoor light is $8.97 and c is number of strands of outdoor light bought. Therefore to model the function g(c) after he has received a $5 discount on his purchase(total purchase)
g(c)=8.97c-5
B. cost of 6 strands of light before discount
f(c)= 8.97×6= $53.82
cost of 6 strands of light after discount
f(c)=8.97×6-5= $48.82
what is eqivelent to 6x=42
What is the midpoint of the segment shown below ? A. (1,5) B. (2,5), C ( 1 1/2,5), D. (2 1/2, 5)
The midpoint of the line segment is (2,5) (option B)
How do you find the midpoint of a line segment in a coordinate?When given the end points of a line segment, you can find out its midpoint by using the midpoint formula. As the name might have already suggested, midpoint is basically the halfway between two end points. All you need to do is dividing the sum of x-values and the sum of y-values by 2.
The sum of x coordinate is -1+5 = 4
half of sum of x coordinate = 4/2 = 2
The sum of y coordinate = 5+5= 10
half of sum of y coordinate = 10/2 = 5
therefore the midpoint of the line is ( 2,5)
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There will be 58 people at a breakfast and each person will eat 2 eggs. There are 12 eggs in each carton. How many cartons of eggs will be needed for the breakfast? ( oh and also im not in high school im in 5th grade)
The midpoint of AB is M(4.-2). One endpoint is A(-2,6). What is the length of AB ?
5 units
10 units
20 units
28 units
None of these
Answer:
AB = 20 units
Step-by-step explanation:
Given the coordinate midpoint M(4.-2) and A(-2,6), we are to find the length AB. To get that, we need to get the coordinate of B first as shown
M(X, Y) = [(x1+x2/2, y1+y2/2]
X = x1+x2/2
4 = -2+x2/2
8 = -2+x2
x2 = 8+2
x2 = 10
Y = y1+y2/2
-2 = 6+y2/2
-4 = 6+y2
y2 = -4-6
y2 = -10
Hence the coordinate of B is (10, -10)
Recall that A =(-2, 6)
Get AB;
AB = √(x2-x1)²+(y2-y1)²
AB = √(-2-10)²+(6+10)²
AB = √(-12)²+(16)²
AB = √144+256
AB = √400
AB = 20 units
Please help me this makes no sense
Answer:
the 4 one
Step-by-step explanation:
Find the distance between the two points rounding to the nearest tenth (if necessary).
(-4,2) and (2, -6)
Answer: _____
Answer:
d = 10Step-by-step explanation:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\(-4,2)\quad\implies\quad x_1=-4\,,\ y_1=2\\\\(2,-6)\quad\implies\quad x_2=2\,,\ y_2=-6\\\\d=\sqrt{(2+4)^2+(-6-2)^2}= \sqrt{6^2+(-8)^2}= \sqrt{26+64}= \sqrt{100}=10[/tex]
Due 12/17/20 8
3-1: MathXL for School: Practice & Problem Solving Copy1
3.1.PS-20
E Question Help
A forest covers 36,000 acres. A survey finds that 0.7% of the forest is old-growth trees. How many
acres of old-growth trees are there?
There are
acres of old-growth trees.
(Type an integer or a decimal.)
uhhh help me , i give brainliest
Answer:
36
Step-by-step explanation:
x² + 12x - 40 = 0
x² + 12x = 40
Now, 12/2 = 6. So add 6² = 36 to each side
x² + 12x + 36 = 40 +36
Given the table, what is the linear equation?
x y
1 7
2 10
3 13
4 16
Answer:
yes
Step-by-step explanation:
A convex polyhedron has faces that consist of 5 congruent squares and 4 congruent equilateral triangles. The
polyhedron has 16 edges. How many vertices does it have?
O 5 vertices
O 9 vertices
O 13 vertices
O 14 vertices
Answer:
9
Step-by-step explanation:
trust
Answer:
9
Step-by-step explanation:
bing bong
A triangle has side lengths of 3 m, 5 m and 4 m. The triangle is enlarged so that the larger
triangle is similar to the original and the scale factor is 4. Find the perimeter of the larger
triangle
Answer:
48 meters
Step-by-step explanation:
3*4 = 12
5*4 = 20
4*4 = 16
These are the sizes when the triangle enlarges with a scale factor of 4.
To find perimeter, you add the sides together
12+20+16 = 48
The perimeter is 48 meters
The perimeter of larger triangle is 48m.
Given that,
Side length 3m , 5m and 4m.The scale factor is 4.We need to find the perimeter of larger triangle.According to the scenario, calculation of the given data are as follows,
Perimeter of larger triangle = 4m [tex]\times[/tex] ( 3m + 5m + 4m)
= 4m [tex]\times[/tex] 12m
= 48 m
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Can someone please help me with this? It's the only question I need help with (since we are reviewing things that we learned in 6th grade again)
Answer: 18 mega rolls
Step-by-step explanation:
Answer:
the second one is a better deal.
Step-by-step explanation:
first deal:
6 rolls for 9.24
9.24/6 = 1.54
1.54$ per roll
second deal:
18 rolls for 27.54
27.54/18 = 1.53
1.53$ per roll
the second one is one cent cheaper
Please help!!
What is the translation image of (6 , 8) after the translation (x,y)→(x+1, y+2)?
james decides to walk home today.he lives 3 miles from school and he can walk 45 minutes.at what rate is james traveling in? A) 1 mile/10 mins b) 1 mile/15 mins, C) 1 mile/20 mins D) 1 mile/30 mins
Answer:
b
Step-by-step explanation:
each mile takes him 15 mins
PLZ HELP I BEG I REALLY NEED HELP :)
Answer:
A
Step-by-step explanation:
A bakery has 36 glazed donuts on display. This is 80% of the total number of donuts. What is the total number of donuts in the bakery?
Answer:
it is 64.8, but you have to round to the nearest number, so i would say 65 :)
Step-by-step explanation:
Answer:
45
Step-by-step explanation:
% means out of 100, so 80% is 80/100
Let's divide 100/80 to find a scale we can use to multiply 36, 100/80 =
36 times 1.25 = 45
There's 45 donuts
Double check:
45(80/100) = 36, we're right
need help on these thank you if you help
Plz, Help me with this!!!!
Plz, Help me with this!!!!
Plz, Help me with this!!!!
A free cable sparkling juice calls for 1 1/2 quarters of sparkling water and 3/4 course with grape juice how many sparkling how much sparkling water would you need to mix with 9 quarts of grape juice
Answer: 18 quarts
Step-by-step explanation:
As per given,
Quantity of sparkling juice is proportional to quantity of course with grape juice.
Given: A free cable sparkling juice calls for [tex]1\dfrac12[/tex] quarters of sparkling water and [tex]\dfrac34[/tex] course with grape juice .
Let x be the quantity of sparkling water need to mix with 9 quarts of grape juice.
then, by equation of direct proportion , we have
[tex]\dfrac{1\dfrac12}{\dfrac34}=\dfrac{x}{9}\\\\\Rightarrow\dfrac{\dfrac{3}{2}}{\dfrac{3}{4}}=\dfrac{x}{9}\\\\\Rightarrow\ \dfrac21=\dfrac{x}{9}\\\\\Rightarrow\ x=9\times2\\\\\Rightarrow\ x=18[/tex]
Hence, the quantity of sparkling water need to mix with 9 quarts of grape juice = 18 quarts
If |x| + 3 = 9, then x = ?
Answer:
x can equal -6 or 6
Step-by-step explanation:
absolute value bars get rid of negative simbols and make it always positive
Answer:
Step-by-step explanation:
9-3=6
X=6