Answer:
The best estimate is -2.64
Step-by-step explanation:
To get the estimate value we are rounding all values to the nearest hundredth
You use BOMDAS/PEMDAS to do this expression
(34/8 - 16/3) - 14/9
= 4.25 - 5.33 - 14/9
= 4.25 - 5.33 - 1.56
= -1.08 - 1.56
= -2.64
If the product (2x + 3)(x + k) is 2x2 + 13x + 15, what is the value of k?
Given:
The product [tex](2x + 3)(x + k)[/tex] is [tex]2x^2+13x+15[/tex].
To find:
The value of k.
Solution:
According to the question,
[tex](2x + 3)(x + k)=2x^2+13x+15[/tex]
Using distributive property, we get
[tex]2x^2+2xk+3x+3k=2x^2+13x+15[/tex]
[tex]2x^2+(2k+3)x+3k=2x^2+13x+15[/tex]
On comparing both sides, we get
[tex]3k=15\text{ and }2k+3=13[/tex]
[tex]k=\dfrac{15}{3}\text{ and }2k=13-3[/tex]
[tex]k=5\text{ and }2k=10[/tex]
[tex]k=5\text{ and }k=5[/tex]
Both value of k are same, i.e., 5.
Therefore, the value of k is 5.
Due now!!! Please help
Answer: the x is vertical and y horizontal
Step-by-step explanation:
–7x + 10 = –20 or 10 = 7x – 20
Answer:
[tex]x=\frac{30}{7}[/tex]
Step-by-step explanation:
Step 1: Subtract 10 from both sides.
−7x+10 −10= −20 -10
−7x=−30
Step 2: Divide both sides by -7.
−7x /−7 = −30 /−7
x= 30 /7
For which mapped relation is the domain
{1,2,3}{1,2,3}?
Answer :C
Step-by-step explanation: For any given function, all first input values (x-values/coordinates) in the relation are considered as the domain values. While the output values (y-values/coordinates) make up the range of the given function.
The mapped relation that has a domain of {1,2,3}, is the mapped relation that has 1, 2, and 3 on the input side on our left.
Therefore, the mapped relation in option C is the answer.
HELPP PLSSMFCODSM MATH TEST !
Answer:
17= addition
18 = 27
Let's solve your equation step-by-step.
43x−4=5−x
Step 1: Simplify both sides of the equation.
43x−4=5−x
43x+−4=5+−x
43x−4=−x+5
Step 2: Add x to both sides.
43x−4+x=−x+5+x
73x−4=5
Step 3: Add 4 to both sides.
73x−4+4=5+4
73x=9
Step 4: Multiply both sides by 3/7.
(37)*(73x)=(37)*(9)
x=277
Answer:
x=277
if you know this please help
Answer:
its c hope this helps:)
Step-by-step explanation:
Jennifer is buying cupcakes for a party. 12
cupcakes is $8.40. What is the unit rate for
each cupcake?
Answer:
24
Step-by-step explanation:
One morning, Muhammad's deli shop sells 15 sandwiches in 10 minutes. If the shop continues to sell sandwiches at the same rate, about how many sandwiches will the shop sell in 3/4 of an hour?
Answer:
68 sandwiches
Step-by-step explanation:
Given that,
A shop sells 15 sandwiches in 10 minutes.
10 minutes = (10/60) hour = (1/6) hour
In (1/6) hour shop sells 15 sandwiches
In 1 hour = 90 sandwiches
To find, no of sandwiches in 3/4 hours, multiply 3/4 by 90. So,
In 3/4 hour = [tex]90\times \dfrac{3}{4}=67.5[/tex] sandwiches
or
≅ 68 sandwiches
So, 68 sandwiches can be made in 3/4 hour.
Ik I said one more buh I assure u this is the last :p
Mr.Johnson sells erasers for 3 dollors each he sold 96 erasers last week and he sold 204 erasers this week how much money did he make this week chose the best estimate
Answer: He made $612 for sold 204 erasers this week.
Step-by-step explanation:
Answer:
$600
Step-by-step explanation:
What is 3.5x+5.4−4.25x+2.7 simplified?
Answer:
-0.75x+8.1
Step-by-step explanation:
Answer:-0.75x+8.1
Step-by-step explanation:
What is the coefficient of x in 2/3x
Answer:
3
Step-by-step explanation:
75% as a fraction in simplest form.
Answer:
3/4
Step-by-step explanation:
A percent is always out of a 100
So, 75/100
The highest common factor between 75 and 100 is 25
Divide both sides both 25
3/4
the answer is 3/4 I believe
I hoped this helps :)
please help
Points Q and R are midpoints of the sides of triangle ABC.
Triangle A B C is cut by line segment Q R. Point Q is the midpoint of side A B and point R is the midpoint of side A C. The lengths of A Q and Q B are 4 p, the length of Q R is 2 p + 3, and the length of C B is 6 p minus 4. The lengths of A R and R C are congruent.
What is AQ?
10 units
14 units
20 units
32 units
Answer:
20 units I believe
Step-by-step explanation:
20 units
Answer: C. 20 units
2021 edg
Step-by-step explanation:
Help me solve this problem please
Answer: (2, -2)
x=2, y=-2
Answer:
(2, -2)
Step-by-step explanation:
4x + y = 6
x - 2y = 6
x = 2y + 6
4(2y + 6) + y = 6
8y + 24 + y = 6
9y + 24 = 6
9y = 6 - 24
9y = -18
y = -18 ÷ 9
y = -2
4x + (-2) = 6
4x - 2 = 6
4x = 6 + 2
4x = 8
x = 8 ÷ 4
x = 2
Confirm:
4x + y = 6
4(2) - 2 = 6
8 - 2 = 6
6 = 6 (Correct)
(2, -2)
How is the image that results from a 90° counterclockwise rotation similar to the image that results from a 270° clockwise rotation? How is it different?
Answer: 90 degrees counterclockwise and 270 degrees clockwise are the same things and you need to use the same formula for both
Step-by-step explanation:We swap the value of x and y and negate the value of y. So the value of x becomes the value of y and value of y becomes the value of x. so the formula is:
(x, y) –> (-y, x)
Before Rotation After Rotation
(x, y) (-y, x)
hope this helps
PLEASE ANSWER!! TIME LIMITED!! Use the gfc and the distributive property to find the expression that is equivalent to 36 + 48
A. 6(6+8)
B. 4(9+12)
C. 12(3+4)
D. 2(18+24)
The sum of 555 consecutive odd numbers is 135135135.
I'm guessing you mean to say that sum of 5 consecutive odd numbers is 135. In that case, let x be the first number. Then
x + (x + 2) + (x + 4) + (x + 6) + (x + 8) = 135
5x + 20 = 135
5x = 115
x = 23
So the numbers are 23, 25, 27, 29, and 31.
If you really did mean 555 consecutive odd numbers summing to 135,135,135, the process is the same, but you would find a non-integer solution so that wouldn't be possible.
Answer:
The answer is 25
Step-by-step explanation:
I got this answer on Khan Academy
Hope this helps! :)
what is 175% of 10 and how to write the work
Answer:
17.5
Step-by-step explanation:
175% is written as 175/100. If you move the decimal at the end over twice you get 1.75/1 which is just 1.75. You then multiple 10 by 1.75 and you get 17.5
175% of 10 is
[tex]➞\large \: \frac{175}{100} \times 10[/tex]
[tex]➞\large \: \frac{175}{10} [/tex]
[tex]➞\: 17.5[/tex]
mrk brainleist ☺️
What is the answer to this problem?
Answer: - 4.5
Step-by-step explanation:
if those are degree symbols next to the expressions, then x is -4.5
Alex tried to solve the equation 14x+12=2. What was his mistake?
:(( hellppp
Use a coordinate proof to prove that mid segment MN of triangle PQR is parallel to PR and half the length of PR. Which is the best first step?
Use a coordinate proof to prove that mid segment mn of triangle pqr is parallel to pr and half the length of pr. which is the first best step? a. place the triangle on a coordinate grid such that vertex p is at the origin, and pr lies on x-axis. b. place the triangle on a coordinate grid such that vertex p is on y-axis and vertex r us on the x-axis
Please consider marking brainliest! :)
Place the triangle on a coordinate grid such that QR lies on the x-axis and PQ lies in the y-axis. Therefore, option D is the correct answer.
If we start with Step A, we are unknown about points Q and R and these two points need to be located somewhere.
If we start with step B, we are unknown about point Q and it needs to be located.
If we start with step C, we are unknown about points P and R, and these two points need to be located.
Let us start with step D,
It is given that,
In triangle PQR, QR lies on the x-axis while PQ lies on the y-axis means Q will be at the origin
Coordinates of Q will be (0, 0)
Let us take coordinates of R (4, 0) and P as (0, 4)
Let us take the midpoints of PQ &PR as ‘S’ & ‘T’ respectively.
Now, coordinates of S and T can be found using the Mid-Point formula
Coordinates of mid-point = (x₁+x₂)/2, (y₁+y₂)/2
Coordinates of S= (2, 0)
Coordinates of T= (2, 2)
Here,
We have to prove ST= QR/2 and ST Parallel to QR.
(1) Now, using distance formula,
ST = √([(0-2)²+(2-2)²])
ST = 2 (1/2 ×QR)
(2) Now, in order to prove ST is parallel to QR, we need to prove that the slope of ST is equal to the slope of QR.
Using slope formulae
Slope of ST = (2-2)/(2-0) = 0
Slope of QR = 0, as we know slope of x-axis is 0.
So, the value of ST is half of QR as well as it is parallel to QR.
Therefore, step D is the best option to start with.
To get more about the mid-point theorem refer to the link,
brainly.com/question/9635025
#SPJ7
"Your question is incomplete, probably the complete question/missing part is:"
Use a coordinate proof to prove that mid segment MN of triangle PQR is parallel to PR and half the length of PR. Which is the first best step?
A. Place the triangle on a coordinate grid such that vertex P is at the origin, and PR lies on x-axis.
B. place the triangle on a coordinate grid such that vertex P is on y-axis and vertex R us on the x-axis.
C. Place the triangle on a coordinate grid such that vertex Q is at the origin.
D. Place the triangle on a coordinate grid such that QR lies on the x-axis and PQ lies in the y-axis.
Triangle RST has coordinates R(0, -6), S(-2, -2) and T(8, -4). Triangle RST is dilated by a scale factor of 1/2 and then rotated 180°. What are the coordinates of the image after both transformations?
is there any options to this question?
6x< 3x+15 please help me on this answer!! I am timeddddd
Answer:
x=5
Step-by-step explanation:
Put the like terms together(In this case we will transfer the 3x)
6x-3x<15
3x<15
To get the value of x divide 15by 3
x=5
Answer:
x<5
Step-by-step explanation:
a pizza cafe sells three sizes of pizzas. if you buy all three sizes it cost 46.24. a medium pizza cost 15.75. and a large pizza cost 17.50. how much does a small pizza cost?
Answer:
A small pizza cost $12.99
Answer:
The price of a small pizza is 12.99
Step by step explanation:
15.75 + 17.50 + ? = 46.24
15.75 + 17.50 = 33.25
46.24 - 33.25 = 12.99
NEED HELP ASAP
Let u = ⟨9, –2⟩, v = ⟨–4, 3⟩, and w = ⟨5, 1⟩. Kelcy incorrectly determined 3u – 5(v + w) to be ⟨32, –26⟩. Review her steps as shown.
3u – 5(v + w)
3⟨9, –2⟩ – 5[⟨–4, 3⟩ + ⟨5, 1⟩]
⟨27, –6⟩ – 5[⟨–1, 4⟩]
⟨27, –6⟩ + ⟨5, –20⟩
⟨32, –26⟩
What mistake did Kelcy make?
She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.
She did not correctly distribute 3 to both components of u.
She should have distributed –5 to both v and w before adding.
She should have subtracted ⟨27, –6⟩ and ⟨5, –20⟩, rather than adding.
Answer:
A
Step-by-step explanation:
-4 +5 is 1 not -1 lol
The incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.
How to add two vectors?Suppose that two vectors are given as:
[tex]x = \: < a,b > \\y= \: < c,d >[/tex]
Then, their addition is given as:
[tex]x + y = \: < a +c , b + d >[/tex]
For this case, we can see that when Kelcy added <-4,3 > and <5,1>, she didn't add -4 and 5 correctly, as it results in +1, and not -1,
Thus, <-4,3> + <5,1> = <1,4>
Thus, wrong addition caused error in the solution.
Thus, the incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.
Learn more about addition of vectors here:
https://brainly.com/question/4553385
The ratio of ages of father and son is 9:2. If the father is 45 years old, find the son
Answer:
x = 10
Step-by-step explanation:
9 is to 45 as 2 is to x
9 ---- 45
2 ---- x
x = 2 . 45 / 9
x = 10
Answer:
The age of his son is 10 years
Step-by-step explanation:
Think x is the age of his son
The age of his son is
=>45/x=9/2
=>9x=90
=>x=90/9
therefore
x=10
The his of son is 10 years
HELP HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
6.75
Step-by-step explanation:
A of rectangle = 2*1.5=3
A or triangle= (7-2)*1.5/2 = 5*1.5/2 =3.75
Area trapezoid =A rectangle +Atriangle = 3+3.75=6.75
Answer:
C : 6.75 yd.
Step-by-step explanation:
first, you divide the trapezoid into two shapes, a square, and a triangle. For the square's area, you multiply 2yd and 1,5 yd to get 3 yd. Then for the triangle's area, since the bottom side of the trapezoid is a side for both the triangle and the square, the square already took 2yd if that makes sense. You multiply 5yd and 1.5 yd to get 7.5 yd. Since its a triangle, you divide the area of the triangle by 2, which is 3.75 yd. To get the total area of the trapezoid, you then add 3yd plus 3.75 yd to get 6.75 yd. ²
hope this helps
Harper is a salesperson who sells computers at an electronics store. She makes a base pay amount of $100 per day regardless of sales and she earns a commission of 1% of the dollar amount of all sales that she makes. Write an equation for P,P, in terms of x,x, representing Harper's total pay on a day on which she sells xx dollars worth of computers.
Given:
Base pay = $100 per day
Commission = 1% of the dollar amount of all sales that she makes
To find:
The equation representing Harper's total pay on a day.
Solution:
Let P be the Harper's total pay on a day if she sells x dollars worth of computers.
Commission on x dollars sales = 1% of x = 0.01x
Total pay = Base pay + Commission
[tex]P=100+0.01x[/tex]
Therefore, the required equation is [tex]P=100+0.01x[/tex].
HELP PLEASE
Which expression is equivalent to (5x^3)(2x)^2 ?
A 10x^6
B 30x^6
C 40x^6
D 1,000x^12
Answer:
I think B is the answer
hope It helps