Answer:
D = 41
Step-by-step explanation:
y = ax² + bx + c
The discriminant D = b² - 4ac tells the types of roots the equation has.
If D < 0 , then quadratic equation has no real roots, has two imaginary roots.
If D = 0 , then quadratic equation has one real root.
If D > 0 , then quadratic equation has two distinct real roots.
~~~~~~~~~~~~
x² + 5x - 4
a = 1, b = 5, c = - 4
D = 5² - 4(1)(- 4) = 25 + 16 = 41
What is the product of 3x+4 and 6x2-4x+2
Answer:
18x³ + 36x² + 22x + 8
Step-by-step explanation:
Multiply 3x + 4 times each term in the latter equation. 6x² times 3x + 4 is 18x³ + 24x².
3x + 4 times 4x is 12x² + 16x.
3x + 4 times 2 is 6x + 8.
Combine like terms to get 18x³ + 36x² + 22x + 8
The length of one side of a squar city is 465 meters . What is the perimeter of the block
Answer:
1860meters
Step-by-step explanation:=Step one:
given data
The length of one side of a square city is 465 meters
We know that perimeter= 4L
P=4*L
Step two:
substitute
P=4*465
P=1860meter
please help this grade means a lot to me
Answer:
1 is false, 2 true, 3 u answered
Step-by-step explanation:
Pls help I’m bad at math no matter how much I try ..
Answer:
unproportional
Step-by-step explanation:
Solve the inequality. Graph the solution.
−2>m/6−7
Answer:
Step-by-step explanation:
m<30
What is the value of x?
12 in.
16 in.
20 in.
30 in.
Cynthia was paid 20 cents pr board for painting the fence. If she was paid $10 for painting half the boards, how many boards were there?
Answer:
100 boards
Step-by-step explanation:
Step one:
Given data
We are told that Cynthia was paid 20 cents per board for painting the fence
that is for 1 board painted she gets $0.2
If she was paid $10
let us find the number of boards she painted for $10
= 10/0.2
=50 boards
This means that the total boards were 50*2= 100 boards
I need help 100 points if you answer this
Answer:
I will do a couple of the since there is so many with little time, any more I do is if you do not understand.
Step-by-step explanation:
1st row(column?)- Decimal form= 0.125 Percent= %12.5
2nd- Fraction= 3/4 Decimal= 0.75
3rd- Decimal= 0.6 Percent- %60
Hope this helps :)
your answers-
1st row(column?)- Decimal form= 0.125 Percent= %12.5
2nd- Fraction= 3/4 Decimal= 0.75
3rd- Decimal= 0.6 Percent- %60
Please answer FAST. PLEASE !
' Evaluate each expression if a=3, b=4, and c=12 '
1. a + b + c =
2. b - a =
3. b + c ÷2 =
4. ab
5. c÷a + 10 =
6. c÷a + 10 =
7. ab - c =
' Evaluate each expression if s=1, t=3, and u=5 '
8. us - t
' Evaluate each expression if a=2, b=3, and c=5 "
9. (25 + c) ÷b
Answer:
Is this from a test
Step-by-step explanation:
what is the difference if you deduct 50.78 to 99.75
A. 49.97
B. 50.97
C. 48.97
D. 48.79
Answer: 48.97
Step-by-step explanation:
Two triangles are similar.The the smaller triangle has side 10,20 and 15 units the larger triangles longest side is 52 units.What is the perimeter of the largest triangle?
Answer: The perimeter of the largest triangle = 117 units.
Step-by-step explanation:
Sides of smaller triangle = 10,20 and 15 units
Longest side = 20 units
Longest side of larger triangle = 52 units
Sides of two similar triangles are proportional.
Let k be proportionality constant.
[tex]k=\dfrac{\text{Length in larger triangle}}{\text{Length in smaller triangle}}[/tex]
[tex]k=\dfrac{52}{20}\\\\\Rightarrow\ k=\dfrac{13}{5}[/tex]
Length of other two sides,
[tex]10\times\dfrac{13}{5}, 15\times\dfrac{13}{5}\ i.e.\ 26\text{ units}, 39\text{ units.}[/tex]
So sides of larger triangle = 52 units, 26 units , 39 units
Perimeter of largest triangle = 52 +26+39 = 117 units
Hence, the perimeter of the largest triangle = 117 units.
What is the equation for the line in slope-intercept form?
Answer:
5+4.6755.874+/
Step-by-step explanation:
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A farmer estimated that there were 25 gallons of water left in the tank. If this is an understatement by 16%, how much water was actually left in the tank
Answer:
29.76 is ur answer
Step-by-step explanation:
The scale factor from a small triangle ABC to a large triangle XYZ is 5. How many times larger will the perimeter of triangle XYZ be than
the area of triangle ABC?
Answer:
Answer below :)
Step-by-step explanation:
Hi there!
Question 4 - the answer will be 5. Since the scale factor is 5, we would (hypothetically) multiply the area by 5 to get the new area of XYZ, so area XYZ is 5 times the area of ABC.
Question 5 - A.
First we multiply 45 by 12 to find the amount in inches. This is 540. Now, we divide that by 6 to get 90. This is our scale factor in inches, but the answers only show the scale in feet, so we have to convert. Divide 90 by 12 to get 7.5.
I hope this helps!
Work out the surface area of the solid cuboid
H=2cm
W=4cm
L=5cm
Answer:
total surface area = 76 sq.cm
Step-by-step explanation:
total surface area of cuboid = 2 ( lb + lh + bh )
( where l is length , b is width and h is height )
so, surface area :
= 2[ (5×4) + (5×2) + (2×4) ]
= 2 [ 20 + 10 + 8 ]
= 2 × 38
= 76 sq.cm
A rental car company charges $68.64 per day to rent a car and $0.12 for every mile driven. Jaxon wants to rent a car, knowing that: • He plans to drive 500 miles. • He has at most $210 to spend. What is the maximum number of days that Jaxon can rent the car while staying within his budget?
Answer:
2 days
Step-by-step explanation:
According to the problem, calculations of given data are as follows,
Rental charges per day = $68.64
Rental per mile = $0.12
Total miles = 500
Total spend = $210
Let number of days = X
So, we can find number of days by using following equation,
($68.64 × X ) + ( $0.12 × 500) = $210
$68.64 X + $60 = $210
$68.64 X = $210 - $60
$68.64 X = $150
X = $150 ÷ $68.64
X = 2.18 or 2 Days
In ΔEFG, e = 1.4 cm, f = 5.2 cm and ∠G=7°. Find the length of g, to the nearest 10th of a centimeter.
Answer:
3.8
Step-by-step explanation:
delta math gave up
you flip a coin 10 times in a row. every single time it comes up heads. on the 11th flip, is it more likely to be heads, tails, or are heads and tails equally likely
Answer:
1/2
Step-by-step explanation:
It will be either heads of tails equally likely.
It’s still 1/2. Flipping a coin is an independent event. In other words, the outcome of the next flip is uninfluenced by what has happened previously. It’s as if it were the first time you ever flipped the coin. The probability is unaltered.
What is this number in standard form? seventy-one and ninety-two thousandths
Answer:
71.092
Step-by-step explanation:
The number in the standard form i.e. seventy-one and ninety-two thousandths should be considered as the 71.092.
Number in standard form:Since the numbers are mentioned in alphabets like
seventy-one and ninety-two thousandths
We have to write in standard form
So, it should be like 71.092.
Hence, The number in the standard form i.e. seventy-one and ninety-two thousandths should be considered as the 71.092.
learn more about number here: https://brainly.com/question/2472437
I WILL MARK BRANLIEST YALL HELP A STUDENT IN NEED
Hello! :)
[tex]\large\boxed{x = 4}[/tex]
In order for the figure to be a kite, each pair of opposite sides must be congruent. Therefore:
GL ≅ GT, and LO ≅ TO
We can solve for x by setting GL and GT equal to each other:
4x + 1 = 17
Subtract 1 from both sides:
4x = 16
Divide both sides by 4:
x = 4.
Verify that it satisfies LO ≅ TO:
6(4) - 3 = 21
24 - 3 = 21
21 = 21.
Therefore, x = 4.
Answer:
[tex]\huge\boxed{x=4}[/tex]
Step-by-step explanation:
Kites are quadrilaterals that have two pairs of two sides that are the exact same length. These sides will be adjacent to one another and therefore they will be the same value.
Looking at the question, we can see that the sides [tex]4x+1[/tex] and [tex]17[/tex] will be two pairs of equal length sides. Therefore, we can solve for x by setting the two equal to each other (as they both will be the same value)
[tex]4x+1= 17[/tex]
Now we can solve for x.
[tex]4x+1=17[/tex] [tex]4x=16[/tex] [tex]x=4[/tex]We can double check this by testing in the same way with the second pair of equal sides, [tex]6x-3[/tex] and [tex]21[/tex].
[tex]6x-3= 21[/tex] [tex]6x=24[/tex] [tex]x=4[/tex]Therefore, to make this figure a kite, x=4.
Hope this helped!
It costs $3.75 to buy 3/4 of a pound of walnuts how many pounds of walnuts can you purchase with 11.25
Answer: 2.25 or 2 1/4 pound of walnut
Step-by-step explanation: So here you need to figure out how many pound of walnut can you purchase with 1 dollar first. To do that, you need to -- 3.75 ÷ 3/4 which you can convert to 3.75 ÷ 0.75 and the answer would be 5.
Now if you do this -- 11.25 ÷ 5 = 2.25
So the answer is 2.25 or 2 and 1/4 pound of walnut
30% of 6th grade student made honor roll. if there are 248 students in 6th grade, how mant students were on the honor roll
Answer:
74.4
Step-by-step explanation:
What is the domain of the function shown in the graph?
Look closey but Asnwer FAST!!!!
please help quick it is due by 12 am
Write a unit rate for the following situation. $54 for 3 every guests
Answer:
Step-by-step explanation:
It's 18 dollars per guest with 54:3
4x - 10 > 22 or x-5 < -6
I need to know how to do this step by step..
Answer:
x > 3 or x < -1
Step-by-step explanation:
4x - 10 > 22
-10 -10
4x > 12
divide both sides by 4
x > 3
x - 5 < -6
+5 +5
x < -1
Hope this helps!!!
2х + 3 +7+ 1 = simply the expression
Answer:
2x + 11
Step-by-step explanation:
2x stays by itself and the integers combine. (3+7+1 = 11)
Answer:
2x + 11
Step-by-step explanation:
you just add the 7 + 3 + 1 = 11
2x + 11
y=5x+7 and passes through (4,3)
the answer is y=5x-17
How do you get the -17?
Answer:
i do not no i do not no
Step-by-step explanation:
Write an algebraic expression to model the given context. Give your answer in simplest form. the price p of a coat reduced by a 5% discount
Answer:
We conclude that the expression of the price p of a coat reduced by a 5% discount will be: 0.95 p
Step-by-step explanation:
Let 'p' be the original price
Discount = 5% = 0.05
The discount amount can be calculated by multiplying the original price by 5% or 0.05
Discount Amount = 5% × p
= 0.05 × p
= 0.05 p
Given that the price p of a coat reduced by a 5% discount.
Thus, the price after 5% discount can be calculated by subtracting the discount amount i.e. 0.05 p from the original price p.
Thus,
The expression of the price p after 5% discount = p - 0.05 p
= 0.95 p
Therefore, we conclude that the expression of the price p of a coat reduced by a 5% discount will be: 0.95 p
Which is a correct classification for the triangle?
O equiangular triangle
O right triangle
O acute triangle
O obtuse triangle
Answer:
right angle
Step-by-step explanation:
180-(31+59)= 90
The correct classification of the triangle should be considered as the right triangle.
What is the right triangle?A right triangle or right-angled triangle, or more formally an orthogonal triangle, formerly called a rectangled triangle, is a triangle in which one angle is a right angle, i.e., in which two sides are perpendicular. The relation between the sides and other angles of the right triangle is the basis for trigonometry.
here, we have,
given that,
In the case when the sum the two given angles is 90,
so, the other angle will be 90
so, its a right triangle.
A right angled triangle is a triangle in which one of the angles is 90°. A 90-degree angle is called a right angle, and hence the triangle with a right angle is called a right triangle. Further, based on the other angle values, the right triangles are classified as isosceles right triangles and scalene right triangles.
Hence, The correct classification of the triangle should be considered as the right triangle.
Learn more about triangle here:
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