8th grade Mathematics
According to the trend line equations, which plants are growing at the same rate per day?
1 and 2
1 and 4
2 and 3
2 and 4
I appreciate you answers so much!
Have a great day! :)
Answers
The plant are growing at the same rate per day is given by equation 1[tex]y=\frac{3}{2}x +\frac{3}{2}[/tex] and equation 4 [tex]y = \frac{3}{2}x+1[/tex] i.e because they have same slope(rate of change )
What is rate of change ?The pace at which one quantity changes in relation to another quantity is known as the rate of change function. Simply said, the rate of change is calculated by dividing the amount of change in one item by the equal amount of change in another.
The plant are growing at the same rate per day is given by equation 1[tex]y=\frac{3}{2}x +\frac{3}{2}[/tex] and equation 4 i.e [tex]y = \frac{3}{2}x+1[/tex]
because they have same slope(rate of change )
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Related Questions
simplify this algebraic expression completely 7x-5(x+6)
Answers
Step-by-step explanation:
[tex]7x - 5(x + 6) \\ 7x - 5x + 30 \\ 2x + 30[/tex]
Which is larger, 3.3 x 105 or 3.1 x 105? who ever answers get 50 points :)
Answers
Answer:
3.3*10^5 is the largest one.
Step-by-step explanation:
Comment
The threes out in front are the same. The next digit, (the tenths) are 3 and 1 since 3 is greater than 1, the answer is
3.3*10^5 > 3.1*10^5
Think of it this way. Take away the 10^5 and just look at 3.1 and 3.3. Which is bigger. 3.3 is the larger one.
Answer:
A
Step-by-step explanation:
A combination lock uses numbers between 1 and with repetition, and they must be selected in the correct sequence. Is the name of combination lock appropriate? why or why not?.
Answers
No, the combination lock is not appropriate. This is so as the repetition is allowed, neither permutation nor the combination rule holds true or valid.
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Please answer the two questions in the photo ( will mark brainliest if correct )
Answers
which expression has a value of 3/4?
Answers
Answer:
6/8
Step-by-step explanation:
3/4 if we further multiply we get 6/8
Mason has a giant oak tree in his front yard. It has 9^3 leaves on the tree. all the leaves fall, and Mason rakes 9 piles of leaves with equal number of leaves in each pile. How many leaves are in each pile?
Answers
9^3 = 729
729/9 = 81
You divide the number of leaves (729) by the number of piles of leaves (9) so that you know how many leaves are in each pile.
Find the value of x
(A) x= 135
(B) x= 25
(C) x= 35
(D) x= 90
Answers
Answer:
C) 35
Step-by-step explanation:
The sum of the interior angles of a triangle is 180°. We also have a right angle which is 90°.
2x - 8 + 90 + x -7 = 180 Combine like terms
3x + 75 = 180 Subtract 75 from both sides
3x = 165 Divide both sides by 3
x = 35
19.7 as a mixed number
Answers
19.7 as a mixed number is [tex]19\frac{7}{10}[/tex].
How can a decimal be changed into a mixed number?Discover the place value of the decimal portion to change a decimal into a mixed number. The place value serves as the fraction's denominator, and the decimal portion serves as its numerator. Write the complete number first, then convert the decimal to a fraction by positioning the decimal part over the place value.Given:
Decimal number = 19.7
To convert it to a mixed number,
Remove the decimal point and add 10 in the denominator as it has one number after the decimal point.
19.7 = 197/ 10
Now divide and write it into a mixed fraction form,
= [tex]19\frac{7}{10}[/tex]
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(x −8, y + 5) y(5-5)
Answers
Answer:
brainliest pls
Step-by-step explanation:
100
Assessment Practice
27. Mr. Tran would like to buy a new sofa
that costs $934. He can pay the total all
at once, or he can make a $125 payment
each month for 8 months. How much
less does it cost to pay all at once? Write
equations to show how you solve. Tell
what your variables represent.
n
$125 $125 $125 $125 $125 $125 $125 $125
Each payment?
Answers
The issues are divided into groups according to the four mathematical operations: addition, subtraction, multiplication, and division (suitable for pupils in the second or third grade who have mastered decimal division). Here answer will be $66.
How to solve money word problems?These worksheets on money word problems expose pupils to practical issues and arithmetic applications. The issues are divided into groups according to the four mathematical operations: addition, subtraction, multiplication, and division (suitable for pupils in the second or third grade who have mastered decimal division).
Not all possible values of the domain may be covered by an operation's definition. For instance, it is impossible to square the roots of negative numbers or divide by zero in real numbers. An operation's domain of definition, also known as the active domain, is the set of values for which the operation is specified. However, the set of real values obtained by the operation is its codomain of definition, active codomain, image, or range. The set that contains the values created is referred to as the codomain. For instance, only non-negative numbers are produced by the squaring operation when applied to the real numbers; the set of real numbers is the codomain, but the non-negative numbers are the range.
Each month payment= $125
8 months payment= $125*8= 1000
cost of a car= $934
cost to pay all at once= $1000-$934
= $66
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What are the first two common multiples of the number 3 and 5?
Answers
Answer:
D
Step-by-step explanation:
3x5=15
3x10=30
5x6=30
Jamal hypothesized that when adding two unit fractions together, he can determine the numerator by adding the two denomimators together, thrn could find the new denominator by multiplying the old denominators together. Prove jamal correct. What are some drawbacjs of jamals shortcut?
Answers
Jamal is correct ( ½+⅓ =⅚), when he says that when adding two unit fractions, the numerator is found by adding the denominators, and the new denominator can be found by multiplying the previous denominators.
State what is denominator with example?A denominator is the lowest number in a fraction that indicates how many equal parts are divided into a whole. It is a fraction's divisor. In this case, the denominator is 4, thus there are four components overall.
What is an illustration of a numerator?In a fraction, the number above the line is the numerator. For instance, the numerator of the fraction 3/5 is 3. A fraction's numerator displays the number of pieces that make up the whole while the denominator.
Adding 2 unit fractions example ½ and ⅓
By Jamal’s theory, 2+3=5
2*3=6
½+⅓ =⅚
Hence the theory is proved right.
Drawbacks of Jamal’s Shortcut,
It is only for the unit fraction and not for any other type of fractions.
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IUITUI Rauuild Ivoiribers Select the number line that shows that two opposite numbers have a sum of 0. 5 O A. -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 2 OB. + 8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 6 11 C. -8 -7 -6.-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 O D. PREVIOUS
Answers
It's important to know that the sum of two opposite numbers is zero because opposite numbers have the same absolute value but opposite sign, for example, 2 and -2 are opposite numbers.
The correct number line must have its final position on zero.
Notice that the number line A shows -5 as the initial number and then goes back 5 units to zero.
Therefore, the answer is A.Overall, 120 6th grade scholars voted in theclass president election. How many votes did each class president candidate receive?
Answers
The number of votes that each class president candidate receive is 48 and 72 votes respectively.
How to calculate the values?Your information is incomplete. Therefore, an overview will be given. Let's say that A received 40% of the vote and B got 60% of the vote.
The number of votes gotten by each person will be:
A = Percentage × Number of votes
= 40% × 120
= 0.4 × 120.
= 48 votes.
B. = Percentage × Number of votes
= 60% × 120
= 0.6 × 120.
= 72 votes.
Therefore, A got 48 votes and B had 72 votes.
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Find the domain of the graphed function.
OA. -9≤x≤ 5
OB. 0≤x≤ 10
OC. x20
-10
D. x is all real numbers.
10-
-10-
PLEASE HURRY
Answers
The domain of the graphed function is option (D)
What is the domain of a graphed function?
In mathematics, the domain of a function is the set of inputs that the function accepts. It is also known as dom(f) or dom f, where f is the function.
The domain of the graphed function is option (D) x is all real numbers.
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What’s The Value Of X as A Decimal
Answers
Step-by-step explanation:
8x + 32 = 12x +19
4x = 13
x = 3.25
Dan created a map of the state of ohio using a scale factor of 2 centimeters 25 miles The actual distance from cleveland to Columbus is 142 miles. About how far apart are Cleveland and Columbus on Dan's map
Answers
On Dan's map the distance between Cleveland and Columbus is 11.36 centimeters .
In the question ,
it is given that ,
the scale factor of Dan's map is 25 miles = 2 cm
So , 1 mile = 2/25 cm
= 0.08 cm
So , on Dan's map 1 mile is represented by 0.08 cm
Given that the actual distance between Cleveland and Columbus is 142 miles .
So , on Dan's map
142 miles = 0.08*142 cm
= 11.36 cm
we get , 142 miles = 11.36 cm
Therefore , On Dan's map the distance between Cleveland and Columbus is 11.36 centimeters .
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Write a two-column proof to prove that vertical angles are congruent.
Answers
The manipulatives and paragraph forms are the two-column proof to prove that vertical angles are congruent.
Using manipulatives: Draw the same two intersecting lines on the paper. Then, fold the paper along the line via the joint. The fold bisects the other two borders, but only the lines of the folded border which are on top of each other are required. The edges check and lie straight on top of each separately. This folding procedure can be utilized with two vertical corners. As a result, the vertical angles are the same.
Paragraph Form: When ∠1 and ∠3 are connected to ∠2, they form a linear pair. This indicates that whether added dimension ∠2 to dimension ∠1 or dimension ∠2 to dimension ∠3, the total is 180°. That is, the measures of 1 and 3 are equal to the sum left before adding ∠2. As a result, the angles are the same. This argument applies to all pairs of vertical angles.
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Hellppp
Which describes the graph of y = −(x + 6)2 + 6?
A.Minimum at (6, 6)
B.Maximum at (−6, 6)
C.Maximum at (6, 6)
D.Minimum at (−6, 6)
Answers
Pointss!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Step-by-step explanation:
always remember (for your life) : the sum of all angles in a triangle is always 180°.
and the sum of all angles around a single point on one side of a line is also always 180°.
so,
180 = 65 + 51 + angle PSR
angle PSR = 180 - 65 - 51 = 64°
angle PST is the supplementary angle to angle PSR (that means together they have 180°), because of the principle of all angles around a single point (S) on one side of a line (TSR).
so,
180 = angle PST + angle PSR = angle PST + 64
angle PST = 180 - 64 = 116°
Answer:114
Step-by-step explanation:
please help me figure out this problem i don’t know if i did it right
Answers
Answer:
Explanation:
Given:
[tex]\cos x\text{ =}\frac{\sqrt[]{15}}{4}[/tex]We must remember that:
[tex]\cos (2x)=2\cos ^2x-1[/tex]Since the value of cos x is given, we plug in the value into 2cos^2x-1. So,
[tex]\begin{gathered} 2\cos ^2x-1 \\ =2(\frac{\sqrt[]{15}}{4})^2-1 \\ \text{Simplify} \\ =2(\frac{15}{16})-1 \\ \text{Calculate} \\ =\frac{7}{8} \end{gathered}[/tex]Therefore, the exact value of cos 2x is 7/8.
Flora is buying dog food for her dog. She wants to buy enough to last five weeks (35 days). Her dog eats 2 cups in a day, and there are 24 cups in each bag. How many bags of dog food should flora buy?
Answers
Answer:
3 bags
Step-by-step explanation:
For all 35 days, the dog will need 35 * 2 = 70 cups
She will need at least 3 bags (72 cups) to sustain 5 weeks
round -125 over 4
-125/4
Answers
Answer:
Step-by-step explanation:
-125/4
-124/4=-31
-31 1/4
Find the Area of the figure below, composed of a square and four semicircles. Rounded to the nearest tenths place
Answers
The Area of the figure ,composing of a square and four semicircles is 832.7 sq. units
The Length of the side of the square is 18 units which is also the diameter of the semicircle.
So, The Area of square is Length * Length = 18*18 = 324 sq. units
Now, the radius of semicircle = 0.5(diameter)= (0.5)*18 = 9 units
The area of semicircle = half of area of circle = (0.5)3.14(radius)(radius)
The area of one semicircle = (0.5)3.14(9)(9)
The area of one semicircle = 127.17
The Total area of figure consists of 4 semicircles and one square
So, Total area = 4(area of 1 semicircle) + area of square
Total area = 4(127.17) + 324
Total area = 832.68 sq. units
rounding off the total area = 832.7 sq. units
Therefore, the total area of the given figure is 832.7 sq. units.
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the nth term of a sequence is givin by 3n2
position of the term that is the first one to have a value over 100
Answers
Position of 1083 is 19 in the sequence that is the first one with a value greater than 1000.
What is Sequence?
A list of numbers or objects in a special order is called sequence.
Given that;
The nth term of a sequence = 3n²
Now,
Let [tex]a_{n}[/tex] be the nth term.
Then, [tex]a_{n} = 3n^{2}[/tex]
Let m be the term which is the first term with a value greater than 1000.
Then, [tex]a_{m} > 1000[/tex]
Substituted the value of [tex]a_{m}[/tex] we get;
3m² > 1000
Divide by 3 we get;
m² > 1000/3
m² > 333.333
Take square root both side;
m > √333.33
m > 18.25
Thus, m = 19
So, 19th term is the first one with a value greater than 1000.
Hence, [tex]a_{19} = 3(19)^2 = 3 * 361 = 1083[/tex]
Thus, Position of 1083 is 19 in the sequence that is the first one with a value greater than 1000.
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Please please please Help! I’m tired but have to finish!
A line has a slope of 4 and passes through the point (-1, 10). What is its equation in point-
slope form?
Use the specified point in your equation. Write your answer using integers, proper fractions,
and improper fractions. Simplify all fractions.
Answers
Answer: 10=-4+14
Step-by-step explanation:
Find the y-intercept(b) y=Mx+b m=slope.
-1x4
-4
Take -4 to the other side
10+4=b
14=b
10=-4+14
Hope I helped
Sally is 10 years older than her brother mark . Who is x years old. How old is sally?
Answers
Answer:
Mark is x years old.
Sally is 10+x years old
X+10 = 10x
How can I find y if x=2?
Answers
Answer:
easy put 2 in the place of x and take it's square and subtract 1 that will be the value of y
Step-by-step explanation:
y= x^2-1
y= (2)^2-1
y= 4-1
y= 3
(the arrow head is used for power)
Question 1 of 25
f(x) = 2x³ + 7x²
g(x) = 3x - 2
Find (f - g)(x).
-
4x - 5
A. (f g)(x) = 2x³ +7x²-x-3
OB. (f-g)(x) = 2x³ + 7x² - 7x - 7
c. (f- g)(x) = 2x³ +7x² - 7x - 3
OD. (f-g)(x) = 2x³ +7x²-x-7
Answers
The answer of the given function is [tex](f-g)(x) = 2x^3+7x^2-7x-3[/tex]. So the answer is C option.
What does f(x) mean?
f(x) is a function that can be named to avoid repeatedly writing it out. The function's name is f, and we are providing the variable x to it.
And g(x) also has a similar meaning.
The given question is a quadratic equation problem.
Given: f(x)= 2x³+7x²-4x-5
And g(x)= 3x-2
To find: (f-g)(x) we have to simply subtract the above to equations
That is [tex](f-g)(x)[/tex] = 2x³+7x²-4x-5-(3x-2)
On opening the brackets we get;
[tex](f-g)(x)[/tex]= [tex]2x^3+7x^2-4x-5-3x+2[/tex]
[tex]= 2x^3+7x^2 -7x - 3[/tex] { here we subtracted and added the like terms together}.
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To prove that △LMN ~ △XYZ by the SAS similarity theorem, it also needs to be shown that
Answers
For both triangles to be proven to be similar to each other by the SAS similarity theorem, it also needs to be shown that: A. angle N ≅ angle Z.
What is the Side-angle-side Similarity Theorem (SAS)?The side-angle-side similarity theorem (SAS) states that two triangles can be proven to be similar to each other if two pairs of corresponding sides of the two triangles are proportional to each other and one pair of corresponding angles of the two triangles are congruent to each other.
In the image given, we know that in both triangles:
XZ/LN = 6/2 = 3
ZY/NM = 9/3 = 3
Therefore:
XZ/LN = ZY/NM = 3
This means that the two triangles have two pairs of corresponding sides that are proportional to each other.
Thus, we also need to show that both triangles have a pair of congruent included angles before we can prove both triangles are similar to each other.
Thus, what needs to be shown is: A. angle N ≅ angle Z.
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