The value of the discriminant for 2x² + 5x + 7 = 0 is -31.
The discriminant of a quadratic equation is the part of the equation used to determine the number and type of solutions. It is calculated by subtracting 4 times the coefficient of the squared term, a, from the coefficient of the linear term, b, squared. This is then divided by four times the coefficient of the squared term, a.
In this case, the equation is 2x² + 5x + 7 = 0.
The discriminant for this equation is calculated as follows:
Discriminant = b² - 4ac
Discriminant = (5)² - 4(2)(7)
Discriminant = 25 - 56
Discriminant = -31
Therefore, the value of the discriminant for 2x² + 5x + 7 = 0 is -31.
Learn more about discriminant here:
https://brainly.com/question/15884086
#SPJ4
4) Han's cell phone plan costs $95 to start. Then there is a $55 charge each month.
a. What is the total cost (startup fee and monthly charge) to use the cell phone plan for 1
month?
b. Is there a proportional relationship between time and the cost of the cell phone plan?
Explain how you know.
c. What is the total cost for x months? (Write an equation for the situation.)(help ASAP pleassseeee)
Step-by-step explanation:
a. What is the total cost (startup fee and monthly charge) to use the cell phone plan for 1 month?
answer for a: $95 + $55 = $150
b. Is there a proportional relationship between time and the cost of the cell phone plan?
answer for b: There is a proportional relationship between time and the cost of the cell phone plan because each month of time that passes, your phone will be charged $55. We know this because every month of Han's cell phone plan costs $55.
c. What is the total cost for x months? (Write an equation for the situation.)
answer for c: 95 + 55x = y
9 8/12 + 5 1/6 pls help- I’m not the smartest
Answer:
:)
Step-by-step explanation:
Answer:
14 5/6
Step-by-step explanation:
See picture for explanation.
Mark me Brainliest?
Please help, i dont understand this
Answer:
lgma
Step-by-step explanation:
Proof! Help please *no links*
-9 x 2 1/2 What is the value of the expression
Answer:
i think its -22.5
Step-by-step explanation:
i just multiplied -9 x 2 1/2 and got -22.5
Write the following using algebraic notation, using the letter x for any unknown numbers: I think of a number, double it, then add nine
Answer:
2x+9
Step-by-step explanation:
You think of a number: x
Double it: 2*x=2x
Add 9: 2x+9
Each week, Joe earns $75 for tutoring plus $17.50 for each additional hour he tutors. His friend, Maddie earns $56 for tutoring plus $19.50 for each additional hour she tutors. Write an expression that represents the total they make altogether after tutoring for t hours.
Answer:
$75 + $17.50t
$56 + $19.50t
Step-by-step explanation:
Let us assume the number of hours be t
Now according to the equation
For Joe
= $75 + $17.50t
And, for Maddie
= $56 + $19.50t
The expression that represents the total is as
$75 + $17.50t
$56 + $19.50t
Hence, the above represent the answer and the same is relevant
What place value does the 9 represent? 78.8914 please hurry!?!?
Answer:
the hundredth place value
Answer:the hundredth place value
Step-by-step explanation:
Help me please with this fast!
Answer:
63°
Step-by-step explanation:
The line = 180
so 180-117
= 63°
Answer:
The value of a is 63°
Step-by-step explanation:
180-117=63°.
Use the volume formula to find the volume of the prism.
2
FIN
PLS HELP DUE TODAY!!!!
Answer:
25
Step-by-step explanation:
Volume = (Area of the base)(height)
So area of base is width*length = 5/2*4=10=> multiply AoB*height 10*5/2=25
right trapezoid has two equal sides true or false
Answer:
True
Step-by-step explanation:
Macy has 8 quarters and 24 pennies in her pocket. What is the answer that correctly shows the ratio of this comparison? ANSWER PLS
Given:
Macy has 8 quarters and 24 pennies in her pocket.
To find:
The answer that correctly shows the ratio of this comparison.
Solution:
We know that,
Number of quarters = 8
Number of pennies = 24
The ratio of this comparison is:
[tex]Ratio=\dfrac{Quarters}{Pennies}[/tex]
[tex]Ratio=\dfrac{8}{24}[/tex]
[tex]Ratio=\dfrac{1}{3}[/tex]
[tex]Ratio=1:3[/tex]
Therefore, the required ratio is 8:24 and its simplified form is 1:3.
can someone please help with parts a, b, and c (picture included)
Answer:
Step-by-step explanation:
1 soulotion one soulotion info soulotion no solution
The graph below shows the path of a submarine
What is the range of this function?
a) 0
b)-300 ≤ y ≤ 0
c)0 ≤ y ≤ 80
d)-300
Answer:
b
Step-by-step explanation:
a submarine cant go above 0 and it shows on the graph the lowest it will go is -300
A PQR is reflected over the x-axis. What are the
coordinates of O'?
у.
8
(-8,2)
2
(8,-2)
-8
-6
-2
0
2
6
8
-2
(-6,5)
8
(6,-5)
i need hel asap Find the total surface area of the triangular prism.
Select one:
116.42
178.42
135.42
123.42
Answer:
is there are picture you attach
PLEASE HELP WHOEVER ANSWERS FIRST WILL GET BRAINLIEST
Answer:
the answer is c
Step-by-step explanation:
36x36 + 36x60
=3456 and add squared
These figures are similar. The perimeter and area of one are given. The perimeter of the other is also given. Find its area and round to the nearest tenth. erimeter = 20m Area = 19.6m ^ 2 rimeter = 34m Area=[ ? ] m^ 2
Answer:
Area of big diagram = 33.32 m²
Step-by-step explanation:
Given:
Both given diagram is similar
Perimeter of small diagram = 20 m
Area of small diagram = 19.6 m²
Perimeter of big diagram = 34 m
Find:
Area of big diagram
Computation:
Both given diagram is similar So,
Perimeter of small diagram / Area of small diagram = Perimeter of big diagram / Area of big diagram
20 / 19.6 = 34 / Area of big diagram
Area of big diagram = [19.6/20][34]
Area of big diagram = 33.32 m²
Answer:
56.6
Step-by-step explanation:
this equation (34/20)^2 * 19.6 = 56.644
Use the Subtraction Property of Equality to complete the following statement:
If 10x+6 - 21, then____=15
A.) 10x - 6
B.) 10x + 6
C.) 10x
D.) 1.5
Answer:
Assuming the question is "If 10x+6 = 21" with an equation sign in place of the subtraction:
C.) 10x
Step-by-step explanation:
10x + 6 = 21
10x + 6 - 6 = 21 - 6
10x = 15
Plz help fast will mark brainliest!!!
Answer:
C) The finish line is 9 meters east of the starting line
Explanation:
The distance North with X and the distance South with Z cancel each other out, leaving us with just the distance East with Y = 6 km East
Question is in picture
I NEED THIS ANSWER FAST PLZ!!!
Answer:
64 is your answer
Step-by-step explanation:
What is the measure of angle y?
Answer:
76
Step-by-step explanation:
Answer:
76°
Step-by-step explanation:
the degrees always mirrors if the lines are the same ones
Personal Finance
The Social Security tax is 6.2% and the Medicare tax is 1.45% of your annual income. How
much would you pay per year to FICA if your annual earnings were $47,000?
9514 1404 393
Answer:
$3,595.50
Step-by-step explanation:
FICA is the sum of Social Security and Medicare taxes.
7.65% × $47,000 = $3,595.50
On earnings of $47,000, you would pay $3,595.50 to FICA.
Based on the table, which function models this situation?
Answer:
F(n) =-3n+24
Step-by-step explanation:
PLZ HELPPP MEEEE
Combine the radicals
Answer:
C) [tex]17\sqrt{13}[/tex]
Step-by-step explanation:
[tex]-2\sqrt{13} +19\sqrt{13} \\\\17\sqrt{13}[/tex]
Please help me this is due tomorrow and I don’t know what to do
Answer:
180-80=100
100-38=62
MJL=62
angle(m)=80
Answer:
<MJL = 62°
<m = 80°
x = 4
Step-by-step explanation:
in ∆JKL total angle aum is 180° and to find <L we have to subtract the given angles in this triangle from 180
that is
<L = 180-80-38 = 62°
then <MJL = 62° (alternative interior angle)
<JLM= 38° (alternative interior angle)
then <m = 180-62-38 = 80°
6x = 24 ( opposite sides are equal in parallelogram)
x= 24/6
x = 4
I need your help asap please
Answer:
Yes they are in proportion because after being divided, they are equal.
Step-by-step explanation:
15 : 60 =
1 : 4
40 : 160
1 : 4
Answer:
Yes
Step-by-step explanation:
Calculate 60/15=4
160/40=4,
so the proportion is same.
Bill plans to save for a pair of headphones that are 89.00.The sales tax rate is 8% how much will bill need to save
Answer: 96.12
Step-by-step explanation:
The amount that Bill will need to save will be for the cost of the headphones and the sales tax that will be applied. This will be:
= 89 + (8% × 89)
= 89 + (0.08 × 89)
= 89 + 7.12
= 96.12
Therefore, Bill will need to save 96.12.
Q Search CR FSA Review - EE 11 and EE 2.4 (Intensive Mathematics - Period 3) Close Question Trina increased the water in her new backyard fish pond by forty gallons and needs to add more. Her pond can hold a maximum of 256 gallons. Her garden hose can add 48 gallons of water in 2 minutes. Write an inequality in terms of m to represent the number of minutes Trina can run the water hose to add more water to the pond without adding the maximum amount in case of rain. A 7 B. 7.5 C. 8 D. 9.75 E 10.3 < 11:18 AM 4/23/2021 hp
Answer:
work hard k
Step-by-step explanation:
The number of minutes Trina can run the water hose to add more water to the pond without adding the maximum amount in case of rain is 24m < 256
What is an inequality?An inequality is an expression that shows the non equal comparison of two or more numbers and variables.
Let m represent the number of minutes Trina can run the water hose to add more water to the pond without adding the maximum amount in case of rain.
Hence:
(48/2)m < 256
24m < 256
The number of minutes Trina can run the water hose to add more water to the pond without adding the maximum amount in case of rain is 24m < 256
Find out more on inequality at: https://brainly.com/question/24372553
Complete the equations.
look at photo
Answer:
25.8
258.
2580.
Step-by-step explanation:
just move the decimal that many times
Answer:
25.8
258
2580
Step-by-step explanation:
10 to the power of 2 is 100
10 to the power of 2 is 1000
10 to the power of 4 is 10000
100 * 0.258
1000 * 0.258
10000 * 0.258