Answer:
A
Step-by-step explanation:
[tex] { x}^{2} - 2x - 35 = (x + 5)(x - 7)[/tex]
[tex]5 + - 7 = - 2[/tex]
[tex]5 \times - 7 = - 35[/tex]
1.
Carly has 35 pens in her pencil case and 20% don't work. How many don't work?
Answer:
35/5=7 ez math why are you asking
A novelty store sells 8 comic books for every 3 action figures. On
Monday, they sold 32 comic books. On Tuesday, they sold 18 action
figures. What is the difference between the number of action
figures sold on Monday and Tuesday? Explain.
Answer:
Step-by-step explanation:
THE answer is 6
First Calculate the number of action figures sold on Monday:
8 comic books for every 3 action figures
32 comic books =? action figures
8 x 4 = 32
so, 3 x 4 = 12 action figures sold on Monday
next Find the difference between the number of action figures sold on Monday and Tuesday
They're asking for the difference, so you subtract
18 - 12 = 6
Hence, the difference in the number of books on Monday and Tuesday is 6
PLEASE HELP THIS IS URGENT PLEASE!!!!!!!!!!!
The following steps were used to simplify the expression 4(3 +1/4).
4(3 +1/4)
4 · 3 + 4 · 1/4
12 + 1
13
Which of the following properties were used to simplify this problem? Not all steps required using a property.
distributive property and multiplicative inverse
distributive property and multiplicative identity
associative property and commutative property
associative property and multiplicative inverse
Answer:
13
Step-by-step explanation:
[tex]4(3 + \frac{1}{4} )[/tex]
multiply 4 by all the numbers in brackets4 × 3 = 12
4 × ¼ = 4 ÷ 4 × 1 = 1
[tex]4( 3 + \frac{1}{4} ) = 12 + 1[/tex]
[tex]12 + 1 = 13[/tex]
_________________________
What is the simplest form of √x^15? A. x^6√x^3 B. x^7 C. x^7√x D. x^6√x
Answer:
c. [tex]x^7\sqrt x[/tex]
Step-by-step explanation:
Find the largest square factor of [tex]x^{15}[/tex], which is [tex]x^{14}=(x^7)^2[/tex]. This gives [tex]\sqrt{x \cdot (x^7)^2[/tex]. Taking the square factor out gives [tex]x^7 \sqrt x[/tex], or choice c.
The equation, y = 3.5x,
represents th
le number of
books, y that Amanda read
in x, months. The number of
books Hunter read in a
month is gi
table
belowThe equation, y = 3.5x,
represents the number of
books, y that Amanda read
in x, months, The number of
books Hunter read in a
month is given in the table
below.
Answer:
y = 4x
Step-by-step explanation:
Amanda: y = 3.5x
Hunter:
x y
1 4
3 12
5 20
y = (?)x
4 = (4)1
12 = (4)3
20 = (4)5
PLEASE I NEED HELP!!!!!!!!!!!!! I HAVE AN F AND I NEED HELP
I PUT ALL POINTS
what is 10 divided by 7+250 divided by 60
Answer:
The answer could be
42.83 im not sure
Answer:
The answer SHOULD be: 6.7 (unless if it's cash than 6.67)
Step-by-step explanation:
10 divided by 7 +250 "by" so 10 divided by (7+250), than divided by 60
10 division (7+250) division 60
10 division 257 division 60
(10 divided by 257 = rounds to 0.04) divded by 60
0.04 divided by 60 = 6.6666 (6 repeating) rounding to 6.7
In a pair of vertical angles one
angle measures 46° and the
other is (2x+7)º. Determine the
value of x.
Answer:
19.5
Step-by-step explanation:
We are given the pair of angles are vertical angles, meaning they are congruent or equal. We can use this to set up an equation to solve for x...
46=2x+7
Subtract 7 from both sides
39=2x
Divide both sides by 2
x=19.5
PLEASE ANSWER MY QUESTION PLSSSS, ITS ALMOST DUE, CORRECT ANSWER GETS BRAINLIEST
Answer:
D
Step-by-step explanation:
D)
13% of x is 2600
13% = 13/100
⇒ (13/100)x = 2600
⇒ 13/100 = 2600/x
FYI A) gives the same value of x as D)
What is the perimeter and area of the shape.
Answer:
peremiter is=35 Area is=3780
Step-by-step explanation:
write 3/8 as a decimal and percentage.
Answer:
as a decimal- 0.375
as a percentage- 37.5%
Step-by-step explanation:
schoolwork helps
Salespeople receive a 7% commission on all items that they sell. Their sales for one day totaled $675. What was the amount of commission received for that day?
a. $20.25
b. $47.25
c. $202.50
d. $472.50
Answer:
the answers to all the questions
1.$33
2.$6.60
3. 130.80
4.$47.25
5.10.09
Step-by-step explanation:
i took the test hope this helps!!!
:)
A box of 125 packets of artifical sweetener sells for 3.99
The 100 packs box is on sale in another store for 3.00
which is the better buyyer
Answer :
2nd One
Explanation : 1st Is 498.75 And 2nd One Is 300.00
Marty counted how many breathes he took in 3 minutes .In that time he took 51 breaths.He took the same number of breathes each minute.How many breaths does it take in one minute
Answer:
17 breathes per min
Step-by-step explanation:
51 / 3 is 17
hope this helps
please help me... I will give brainlist
Answer:
C
Step-by-step explanation:
609/504 = 1.208333333
58/48 = 1.208333333
They are proportional since they divide to the same number.
please help me learn math
Answer:
the period of this graph is [tex]\pi[/tex]
Step-by-step explanation:
The period is the length of the section that repeats. So for this graph, we need to calculate the distance between 2 peaks or 2 troughs of the curve.
Let's look at the peaks (maximums).
One is at x = 0 and the next is at x = [tex]\pi[/tex]
[tex]\pi[/tex] - 0 = [tex]\pi[/tex]
Therefore, the period of this graph is [tex]\pi[/tex]
How to do
Please add explanation
Answer:
x=1÷x+1
NOW
or,x=1÷×+1
or,xsquare=1÷1
or,xsquare=1
or,h=1 answer
Jessica Johnson is running for mayor of a small city in Florida. She needs at least 51% of the votes to win.
Her campaign wanted to make a prediction about whether or not she will win. She hires ten polisters to each
ask 100 randomly selected voters if they will vote for her. The pollsters' results are below.
Poll number
1
2
3
4
5
Yes votes
51
68
58
43
65
Poll number
6
7
8
9
10
Yes votes
56
45
59
71
63
Use this information to correctly complete the statement below. From the drop-down menus, select a
prediction and the best justification for that prediction based on the data.
Jessica should predict that she will
because
Answer:
I dont really know if i understand the problem fully but i hope this is what you are looking for:
Step-by-step explanation:
A prediction for yes votes you round all the results and add = 300 real answer: 285
Poll number: 50, real: 40
Yes votes (#2) 290, real: 294
In conclusion you get 300, 50, 290 I think.
Can the sides of a triangle have lengths 4, 7, and 10?
yes
no
Answer:
i kinda like ixl but the answer is yes
Step-by-step explanation:
Yes these side lengths can make a triangle
The triangle side length rule states that any 2 sides of a triangle are greater than the other side.
Let's use this rule to determine if these side lengths can make a triangle.
4+7=11 and 11 is greater than 10.
4+10=14 and 14 is greater than 7.
7+10=17 and 17 is greater than 4.
These side lengths can make a triangle.
A charm bracelet costs $65, plus $25 for each charm. The equation -25x+y=65 represents the cost y (in dollars) of the bracelet, where x is the number of charms.
a. Graph the equation.
b. How much does a bracelet with three charms cost?
Answer:
a. see attached
b. $140
Step-by-step explanation:
a.The graph starts at y=65 when x=0 and increases by 25 for each increase of 1 in x. The attachment shows a graph of the equation.
__
b.Use x=3 in the equation.
-25x +y = 65
y = 65 +25x = 65 +25(3) = 140
A bracelet with 3 charms costs $140.
Given that AOB, COD, and EOF are straight lines, Find the value of 'a' of the following figures. C F 2aº За°— 10° А. B O 4a°-17° E D
Answer:
2a + 4a-17 + 3a - 10 = 180
9a - 27 = 180
+27
9a. =207
÷9
a= 23
Check:
2x23=46
4x23 - 17 =75
3 x 23 - 10 =59
Angle on straight lines adds to 180 (46+75+59=180)
Hope this helps!
Help me please if you can
Answer:
3 1/8
Step-by-step explanation:
3 1/2 can also be represented as 3 4/8. Knowing this, we can apply it to the equation.
6 5/8 - 3 4/8
= 3 1/8 or 25/8
Normal Distribution (Standard deviation)
Image attached! Due in 1 hour! please help!
I don't know what kind of calculator you have at your disposal, so I'll just give one way of computing the sample mean and standard deviation.
• To get the mean, add up all the data points and divide the total by the number of data:
[tex]\bar x = \displaystyle \sum_i \frac{x_i}n = \frac{1243+1264+\cdots+1275}9 \approx 1273.89 \\ \implies \boxed{\bar x \approx 1274}[/tex]
• To get the s.d. s, first compute the variance s² by adding up the squared difference between each of the data points and the sample mean, and divide the total by 1 less than the number of data:
[tex]s^2 = \displaystyle \sum_i \frac{\left(x_i-\bar x\right)^2}{n-1} = \frac{(1243-1274)^2+(1264-1274)^2+\cdots+(1275-1274)^2}8 \approx 1211.61[/tex]
The s.d. is the square root of the variance:
[tex]s^2 \approx 1211.61 \implies s \approx 34.8082 \implies \boxed{s\approx 35}[/tex]
The 90% confidence interval for the sample mean has upper and lower limits, respectively, of
[tex]\bar x \pm \dfrac{\left|Z_{\alpha/2}\right| s}{\sqrt n}[/tex]
(positive root for upper limit, negative root for lower limit)
where [tex]Z_{\alpha/2}[/tex] is the critical value for a (1 - α)×100% confidence level. By critical value, I mean
[tex]\mathrm{Pr}\left[ Z \le Z_c \right] = c[/tex]
where Z is a random variable following the standard normal distribution.
In this case, we have a 90% confidence level, so α = 0.1, and the critical value is [tex]Z_{0.05} \approx -1.64[/tex]. Then the confidence interval has upper limit
[tex]\bar x + \dfrac{\left|Z_{0.05}\right|s}{\sqrt n} = 1274 + \dfrac{1.64 \times 35}{\sqrt9} \approx 1292.97 \approx \boxed{1293}[/tex]
and lower limit
[tex]\bar x - \dfrac{\left|Z_{0.05}\right|s}{\sqrt n} = 1274 - \dfrac{1.64 \times 35}{\sqrt9} \approx 1254.8 \approx \boxed{1255}[/tex]
Solve the equation:
1/3=n + 3/4
And please explain how you got the answer!
Answer:
n = -5/12
Step-by-step explanation:
1/3 = n + 3/4
Now, get equal denominators:
4/12 = n + 9/12
Now, solve:
n = -5/12
Hopefully this helps!
Brainliest please?
Geometry: Mathematical proofs
Answer:
B
Step-by-step explanation:
<3 and <2 are on a straight line.a straight line is 180° .so <3 +<2=180.angles which add up to 180 ° are said to be supplement
The best statement in geometric proof that proves the theorem that vertical angles are equal [tex]\angle2 + \angle3 = 180^{\circ}[/tex] because ∠2 and ∠3 are linear pair.
In the given proof, where the angles are labeled as ∠1, ∠2, ∠3, and ∠4, demonstrate the equality of vertical angles by utilizing the concept of a linear pair:
Step 1: Given two lines intersect.
Step2:
State that ∠1 and ∠2 are adjacent angles, as they share a common side.Introduce the concept of a linear pair, which states that if two angles form a straight line, their measures sum up to 180°. Since ∠1 and ∠2 form a straight line, their measures sum up to 180 degrees. Express the equation: [tex]\angle1 + \angle2 = 180^{\circ}[/tex].Step 3:
Demonstrate that ∠2 and ∠3 are also adjacent angles, sharing a common side.Apply the linear pair concept to ∠2 and ∠3, resulting in the equation: [tex]\angle2 + \angle3 = 180^{\circ}[/tex].Step 4:
By comparing the equations [tex]\angle1 + \angle2 = 180^{\circ}[/tex] and [tex]\angle2 + \angle3 = 180^{\circ}[/tex], deduce that ∠1 and ∠3 are equal angles.By following this step-by-step geometric proof, establish that the best statement to prove the theorem "Vertical angles are equal when two lines intersect" is the statement that defines vertical angles as "Vertical angles are formed by adjacent angles sharing a common side
Learn more about geometric proofs here:
https://brainly.com/question/2065148
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A rectangular field is ten times as long as it is wide. If the perimeter of the field is 1540 feet, what are the dimensions of the field?
Answer:
700 by 70
Step-by-step explanation:
The equation for perimeter is 2(l + w). Since the length has an assigned value, l will become 10w.
2(10w + w) = 1540
First, add the parenthetical expression to get 11w.
2(11w) = 1540
Now, DISTRIBUTE! 2(11w) becomes 22w.
22w = 1540
Lastly, divide by 22 to get 70. You can also say that this could be 22w = 154 * 10. 22 * 7 is 154 (140 + 14), and 7 * 10 is 70.
w = 70
Now that we know the width, substitute 70 for w in the 10w expression.
l = 10(70)
Just multiply and you'll get 700.
l = 700
Now we know the dimensions to be 700 * 70 (or 70 * 700; I just prefer to put the length first)
find the number pairs of 48 and 56
Answer:
■ Find the number pairs of 48 and 56
➢ GCF of 48 and 56 by Listing Common Factors
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.Factors of 56: 1, 2, 4, 7, 8, 14, 28, 56.
[tex]TextFromYourMrEx[/tex]
#CarryOnLearning
If the scale factor is 3/2, find the larger square missing side.A) 8 inch) 9 inch) 10 inch) 12 inch
Answer:
B) 9
Step-by-step explanation:
6×3/2=9
4) A tree casts a 25-foot shadow. At the same time of day, a 6-foot man standing near the tree casts a 9-foot shadow. What is the height of the tree, to the nearest foot?
Answer:
22 feet shadow, I'm sorry if this is incorrect-
What is the area of the composite figure?
○ 40cm^2
○ 65cm^2
○ 52.5cm^2
○ 60cm^2
Answer:
C. 52.5cm^2
Step-by-step explanation:
Area of a triangle - A=1/2bh or area=1/2 base times height
Area of a rectangle - A=lw or area=length times width
Separate the shapes first, you would draw a line between the two if this was on paper.
Find the separate areas.
Rectangle area:
8*5=40
Triangle area:
find the height first. the height of this triangle is the same as the length of the rectangle minus the 1 and 2 cms.
8-1-2=5
1/2*5*5=12.5
Now add the areas:
40+12.5=52.5cm^2