Answer:
20
Step-by-step explanation:
Evaluate for y= −5
(−5)2+(2)(−5)+5
(−5)2+(2)(−5)+5
=20
I really need help ASAP!
The sum of 8 times a number and 15 is 7 find that number
Answer:
8x+15=7 8x=-8 x =-1
Step-by-step explanation:
a store charges 8:95 for an 8 ounce jar of maple syrup.The price for a 10 ounce jar is 12:00. Which jar is better to buy ? What is the difference in the unit prices. If necessary round to the nearest cent
9514 1404 393
Answer:
8-ounce jar is a better buy$0.08Step-by-step explanation:
The price per ounce for the 8-ounce jar is ...
price/ounces = $8.95/8 = $1.11875 ≈ $1.12 . . . per ounce
The price per ounce for the 10-ounce jar is ...
$12.00/10 = $1.20 . . . per ounce
The 8-ounce jar has a lower unit price, so may be better to buy.*
__
The difference in unit prices is ...
$1.20 -1.12 = $0.08
_____
* If you need at most 10 ounces, but more than 8, the 10-ounce jar will have a lower total cost for the amount needed. The "better buy" depends on the context.
THE FIRST PERSON TO ANSWER MY QUESTION GETS BRAINLEST!!!!!!!ASAP!!!!!
A city councilman created a scale model of the city hall. The councilman used the scale 1 inch: 8 feet to create the scale model of city hall. The actual hall is 56 feet long.
What is the length of the scale model of city hall?
Enter your answer in the box.
Answer:
7 inches
Step-by-step explanation:
56 divide by 8
Hope this helps.
Hi. I need help with these questions.
See image for question.
Please answer no 10 and 11
9514 1404 393
Answer:
10. (x, y) = (-3/8, 2 9/16)
11. k = -1
Step-by-step explanation:
10. The value of x at the vertex is ...
x = -b/(2a)
x = -(-3)/(2(-4)) = -3/8
The corresponding value of y is ...
y = 2 +(-3/8)(-3 +(-3/8)(-4)) = 2 +(-3/8)(-3/2) = 2 +(9/16)
The vertex is (x, y) = (-3/8, 2 9/16).
__
11. The discriminant is zero when the roots are equal.
b² -4ac = 0
(k-1)² -4(1)(-k) = 0
k² -2k +1 +4k = 0
k² +2k +1 = 0 . . . . . collect terms
(k +1)² = 0 . . . . . . . . write as a square
k = -1 . . . . . . . . . . . . the value of k that satisfies
Check
x² -2x +1 = (x -1)² = 0 . . . . has equal roots: x=1.
A geometric sequence has u4= -70 and u7=8.75
Find the second term of the sequence.
Answer:
-122.5
Step-by-step explanation:
Difference = 7 - 4 = 3 terms; 8.75 - (-70) = 78.75
1 term → 78.75/3 = 26.25
therefore, u2 = - 70 - 2(26.25) = -122.5
Topic: Patterns + Common difference
If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!
How to do this question plz answer
Answer:
about $2442.42
Step-by-step explanation:
1985 - 1980 = 5 years
B = Initial Value
r = rate of change
t = time
A = B(1 + r)^t
2245(1 + 0.017)^5 = 2442.42428756
2442.42428756 = 2442.42
A blender was originally sold for $90 and has been marked
down to $79.20. What is the percentage of discount for the
blender?
Answer:
88%
Step-by-step explanation:
From the question given above, the following data were obtained:
Original amount = $ 90
Discounted amount = $ 79.20
Percentage of discount =?
Let the percentage of discount be y %
Thus, we can obtain the value of y as follow:
y /100 × 90 = 79.20
90y /100 = 79.20
Cross multiply
90y = 100 × 79.20
90y = 7920
Divide both side by 90
y = 7920/90
y = 88
Thus, the percentage discount of the blender is 88%
Answer:
12
Step-by-step explanation:
12
Explain how to determine whether a product(answer to a multiplication problem) will be positive or negative. Write in complete sentences
Answer:
when the signs of the two numbers being multiplied are the same, the product answer would be positive.And when the signs of the two numbers being multiplied are different, the product answer would be negative.Step-by-step explanation:
Whether a prdocut will be positive or negative really depends on the signs of the two numbers being multiplied.
In other words,
when the signs of the two numbers being multiplied are the same, the product answer would be positive.(positive number) × (positive number) = positive number
(negative number) × (negative number) = positive number
For example, when we multiply the positive numbers 3 and 4, the product will be positive.
i.e. 3 × 4 = 12
Also, when we multiply the negative numbers 3 and 4, the product will again be positive.
i.e. (-3) × (-4) = 12
And when the signs of the two numbers being multiplied are different, the product answer would be negative.(positive number) × (negative number) = negative number
For example, when we multiply the positive number 3 and negative number -4, the product will be negative.
i.e. (3) × (-4) = -12
I hope your concept is clear now.
Please help. will give brainliest
The system of equations is shown in the graph.
2x + y = 4,
x – y = 2
What is the solution of the system?
(
,
)
Answer:
(2,0)
Step-by-step explanation:
I will solve your system by substitution.
(You can also solve this system by elimination.)
2x+y=4; x−y=2
Step: Solve 2x+y = 4 for y:
2x + y + −2x = 4 + −2x (Add -2x to both sides)
y = −2x+4
Step: Substitute −2x+4 for y in x−y=2:
x − y=2
x−(−2x + 4)=2
3x − 4=2(Simplify both sides of the equation)
3x − 4 + 4 = 2+4 (Add 4 to both sides)
3x =6
(Divide both sides by 3)
x=2
Step: Substitute2forxiny=−2x+4:
y= −2x + 4
y=(−2)(2) + 4
y=0 (Simplify both sides of the equation)
Answer:
x=2 and y=0
please help me for this
Find the intercepts of the function 2x - y = 6.
So the given function is in standard form: Ax + By = C
To find the x-intercept set 'y' to 0 and vice-versa
Solve for x:
2x - 0 = 6
+0 +0
2x = 6
/2 /2
x = 3
x-int: (3, 0)
Solve for y:
2(0) - y = 6
0 - y = 6
-0 -0
-y = 6
/-1 /-1
y = -6
y-int: (0, -6)
Wesley earned $72 walking dogs for 6 hours. How many total hours will it take Wesley to earn $96 in all? Solve using unit rates.
Hours?
Cost of a New Car From 1970 to 1990, the average cost of a new car, C
(in dollars), can be approximated by the model C = 30.512 + 4192, where
t is the number of years since 1970. During which year was the average
cost of a new car $12,000?
Answer:
In year 1986 the average cost of car is $12,000
Step-by-step explanation:
Cost function:
C = 30.5t² + 4192
Cost = $12,000
Find:
Year
Computation:
C = 30.5t² + 4192
12,000 = 30.5t² + 4192
t = 16 year
So,
Year 1970 + 16 year
1986
So, In year 1986 the average cost of car is $12,000
click photo
needing help ASAP! Please
Answer:
[tex]\huge\boxed{y=6x+9}[/tex]
Step-by-step explanation:
In order to put this equation into slope-intercept form, we want to get this into the form [tex]y=mx+b[/tex], where m is the slope (coefficient) and b is the y-intercept.
We already have the equation [tex]y-6x=9[/tex]. Looking at this equation, we can see that we have to get 6x off the left side of the equation and on to the right.
To do this, we can add 6x to both sides. However, if we add 6x to one side we must add it to the other.
So, let’s add 6x to both sides.
[tex]y -6x + 6x = 9 + 6x[/tex]
[tex]y = 9 + 6x[/tex]
We can now rearrange the terms.
[tex]y = 6x+9[/tex]
Hope this helped!
What’s the answer to this pls! Only if you know :)))
Answer:
e
Step-by-step explanation:
because 2 sides are given........and any of 1 side or angle is missing...
hope it is helpful for you ❤️
please thanks my answer
i am indian
Which of the following inequalities is not true?
|-9| ≠ |9|
-2 2 < 3
-7 ≤ -5
|-1| ≥ 0
Answer:
Sorry i don't know the answer but which class question is this
What expression is equivalent to 5(n+5)
Answer:
10n
Step-by-step explanation:
f(x)= 4x-5 what is f(100)?
Answer:
26.25 = x
Step-by-step explanation:
f ( x ) = 4x - 5
f ( x ) = Y-value
x = x - value
If f ( 100 ) = The Y is 100
100 = 4x - 5
+5 = +5 Add 5 on both sides. The 5's will cancel on the right
-------------------
105 = 4x Divide by 4 on both sides. The 4's will cancel on the right
----- = ----
4 = 4
26.25 = x
Hope this helps!!
If AB is rotated 180 degrees clockwise about a point not on the line AB then which of the following statements about its image, A B' ', is true?
(1) AB and A'B' have the same lengths and are perpendicular
(2) AB and A B' ' have different lengths and are perpendicular
(3) AB and A B' ' have the same length and are parallel
(4) AB and A B' ' have different lengths and are parallel
Answer:
I think the answer is 3
Step-by-step explanation:
Allie created a garden in the shape a right triangle. Which set of measurements could represent the lengths of the sides of her garden
A. 1in, 5in, and 6in
B. 3ft, 3ft, and 4ft
C. 9cm, 9cm, and 9cm
D. 6m, 8m, and 10m
Answer:
D
Step-by-step explanation:
[tex] {c}= \sqrt{ {a}^{2} + {b}^{2} } [/tex]
[tex]c = \sqrt{ {6}^{2} + {8}^{2} } [/tex]
[tex]c = \sqrt{36 + 64} [/tex]
[tex]c = \sqrt{100 } [/tex]
[tex]c = 10[/tex]
Pythagorean theorem
Shipping Company A charges $14 plus $2.25 a pound to ship overnight packages. Shipping Company B charges $20 plus $1.50 a pound to
ship an overnight package. For what weight is the charge the same for the two companies?
Let p represent the number of pounds. Select the correct values to write an equation to represent the situation
Answer:
8 pounds
Step-by-step explanation:
Shipping Company A = 14 + 2.25p
Shipping Company B = 20 + 1.50p
Where,
p = the number of pounds.
For what weight is the charge the same for the two companies
Equate the charges of the two companies
14 + 2.25p = 20 + 1.50p
14 - 20 = 1.50p - 2.25p
-6 = -0.75p
Divide both sides by -0.75
p = -6 / -0.75
= 8
p = 8 pounds
Which test point holds true for y-2xs 1?
O A.
(0, 2)
O B.
(-2, 4)
O C.
(1,4)
OD.
(5, 0)
Answer:
its d
Step-by-step explanation:
have a nice day
Which is the steepest and why?
a) slope=5/3
b) slope= -3/2
c) slope= 0
Answer:
A is the steepest Because
A = 1.66666666667
B=-1.5
C= is just 0
Step-by-step explanation:
Given the relation {(1, 4), (3, 6), (5, 4), (1, 8)},
find the domain and determine whether or not it is a function.
Answer:
The domain of relation is {1,3,5}
It is not a function.
Step-by-step explanation:
Given the relation {(1, 4), (3, 6), (5, 4), (1, 8)}
We need to find the domain and determine if the given relation is function or not.
The domain of relation is {1,3,5}
But the given relation is not function because we have x=1 twice in the relation and the for the relation to be function the values of domain can't be repeated.
So, It is not a function.
Twice the sum of a number and 7 is more than 6 or at most -3. Which compound inequality can represent this relationship?
DA 2(x + 7) > 6 and 2(x + 7) = 3
OB 2(x+7) < 6 or 2(x + 7) 2-3
C 2(x+ 7) < 6 and 2(x + 7) 2-3
D. 2(x + 7) > 6 or 2(x + 7) = -3
The compound inequality that represent the situation is 2(x + 7) > 6 and 2(x + 7) ≤ -3.
How to find compound inequality?Inequalities are mathematical expressions involving the symbols >, <, ≥ and ≤.
Compound inequality is an inequality that combines two simple inequalities.
Therefore, let's represent twice the sum of a number and 7 is more than 6 or at most -3 with compound inequality as follows:
Therefore,
2(x + 7) > 6 and 2(x + 7) ≤ -3
learn more on inequality here: https://brainly.com/question/24633027
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simplify 8(x+3)^2/2(x+3)
8(x+3)^2/2(x+3)
[8(x + 3)(x + 3)]/2(x + 3)
8 ÷ 2 = 4
(x + 3)(x + 3) ÷ (x + 3) = (x + 3). In other words, we cancel one of the numerator factors.
Answer: 4(x + 3).
The simplification of the given expression [8(x+3)²]/[2(x+3)] is 4(x + 3).
What is an expression?An expression is a combination of some mathematical symbol such that an arithmetic operator and variable such that are all constrained and create an equation.
In other meaning, expression is beneficial to determine the end or root value of constraint.
As per the given expression,
[8(x+3)²]/[2(x+3)]
⇒ 8/2 × (x+3)²/(x+3)
⇒ 4(x+3)
Hence "The simplification of the given expression [8(x+3)²]/[2(x+3)] is 4(x + 3)".
To learn more about expression,
https://brainly.com/question/14083225
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Determine the slope given the two points:
(4, 9) and (1,6)
Answer:
slope is 1
Step-by-step explanation:
If i have 56 days left to finish my science course and i have to do 156 assignments how many assignments should i do a day to finish the class
Answer:
3
Step-by-step explanation:
156/56=2.78 but you cannot do a decimal so need round to 3
Answer:
I think you should try and do about 27 assignments a day
Step-by-step explanation:
Which table represents a linear function? A two-column table with five rows. The first column, x, has the entries, 0, 1, 2, 3. The second column, y, has the entries, 1, 2, 4, 8. A two-column table with five rows. The first column, x, has the entries, 0, 1, 2, 3. The second column, y, has the entries, 0, 1, 3, 6. A two-column table with five rows. The first column, x, has the entries, 0, 1, 2, 3. The second column, y, has the entries, 0, 1, 0, 1. A two-column table with five rows. The first column, x, has the entries, 0, 1, 2, 3. The second column, y, has the entries, 1, 3, 5, 7.
Answer:
answer is d
Step-by-step explanation:
just did it
Answer:
its D
Step-by-step explanation:
Plzz plzzz explain this!!!!
Answer:
hope it helps...
Step-by-step explanation:
please comment me if it is really helpful ..