Answers
Answer:
[tex]x=-1,\frac{5}{7}[/tex]
Step-by-step explanation:
1) Split the second term in [tex]7{x}^{2}+2x-5[/tex] into two terms.
1 - Multiply the coefficient of the first term by the constant term.
[tex]7\times -5=-35[/tex]
2 - Ask: Which two numbers add up to 2 and multiply to -35?
7 and -5.
3 - Split 2x as the sum of 7x and -5x.
[tex]7x^2+7x-5x-5[/tex]
2) Factor out common terms in the first two terms, then in the last two terms.
[tex]7x(x+1)-5(x+1)=0[/tex]
3) Factor out the common term x+1.
[tex](x+1)(7x-5)=0[/tex]
4) Solve for x.
1 - Ask: When will (x+1)(7x-5) equal zero?
When x + 1 0 or 7x-5=0
2 - Solve each of the 2 equations above.
[tex]x=-1,\frac{5}{7}[/tex]
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\textbf{What are the quadratic formulas?}[/tex]
[tex]\bullet\rm{\ \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}}[/tex]
[tex]\bullet\rm{\ ax^2 + bx + c = 0}[/tex]
[tex]\huge\textbf{What are we solving for?}[/tex]
[tex]\rm{7x^2 + 2x - 5 = 0}[/tex]
[tex]\huge\textbf{What do we have to do?}[/tex]
[tex]\rm{7x^2 + 2x - 5 = 0}[/tex]
[tex]\huge\textbf{Factor the LEFT side of the given}\\\\\huge\textbf{equation:}[/tex]
[tex]\rm{(7x - 5)(x + 1) = 0}[/tex]
[tex]\rm{(7x - 5) \times (x + 1) = 0}[/tex]
[tex]\huge\textbf{Set 0 to the factors:}[/tex]
[tex]\rm{7x - 5 = 0\ or\ x + 1 = 0}[/tex]
[tex]\huge\textbf{Simplify it:}[/tex]
[tex]\rm{x = \dfrac{5}{7}\ or\ x = -1}[/tex]
[tex]\huge\textbf{Therefore, your answer should be:}[/tex]
[tex]\huge\boxed{\frak{\mathsf x = \dfrac{5}{7}\ or\ \mathsf{x} = -1}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Related Questions
Problem 2: Raylin wants to buy a new bike for $85. She already has $22 saved and her mom will
give her $2.50 for each chore she does. What is the least amount of chores Raylin must do in order
to save enough money to buy the bike?
Answer
22
23
24
25
26
Answers
Cost of a bike Raylin wants to buy = $85
Money Raylin already has = $22
Money she needs :
[tex] = \tt85 - 22[/tex]
[tex] = \tt\$63[/tex]
Thus, money Raylin still needs = $63
Money she gets from doing one chore = 2.50
Number of chores the needs to do :
[tex] = \tt \frac{63}{2.50} [/tex]
[tex]\color{plum} =\tt 25 \: chores[/tex]
Thus, Raylin needs to do 25 chores to be able to buy the bike.
Therefore, the correct option is (d) 25
PLEASE HELP ME!!!!
Find the volume of this sphere.
Use 3 for pi.
Answers
Answer:
904cm3 just use an online sphere calculator they're easy to use
Evaluate for f ^-2 for f = 3 and g = 27 .
Answers
Answer:
1/9
Step-by-step explanation:
if your question is about evaluting f^-2
then the answer is
f = 3
then
f^-2 = 3^-2 = 1/9
Answer:
3
Step-by-step explanation:
You meant f^-2(g) for f = 3 and g = 27.
(3^-2)(27)
= 1/9(27)
= 3
:)
Tyrone has 16 model airplanes on his shelf. He has 4 times as many model airplanes as model trains. How many model trains does Tyrone have?
Write multiplication and division equations to model and solve the problem. Use m for the unknown
Answers
Step-by-step explanation:
4m = 16
divide both sides by 4
m = 4
he has 4 model trains
Find the weight of one ciricle
Answers
Answer:
Weight Calculator
Standard conversion factors.
1) MILD STEEL (MS)
MS SQUARE. WEIGHT (KGS ) = WIDTH X WIDTH X 0.00000785 X LENGTH. ...
MS ROUND. WEIGHT (KGS ) = 3.14 X 0.00000785 X ((diameter / 2)X( diameter / 2)) X LENGTH. ...
SS ROUND. DIA (mm) X DIA (mm) X 0.00623 = WEIGHT PER METRE. ...
SS / MS CIRCLE. ...
SS sheet. ...
S.S HEXAGONAL BAR.
Step-by-step explanation:
Is (1,5) a solution of the graphed system of inequalities?
Answers
Explanation: Because the line don’t go through (1,5) it doesn’t even touch those numbers.
Answer:it’s No
Step-by-step explanation:
I got it right
The highest point in Chicago is 735 feet above sea level. You can represent that numerically using .
Answers
Answer:
+735 feets
Step-by-step explanation:
Points or position above sea level are denoted with positive elevation values while points or positions below sea level are denoted by negative values. The sea level position itself could be viewed as a midpoint such as the position of 0 on a number line ; where distances to the right are positive and distances to the left are negative.
Hence, a point which is said to be 735 feets above sea level would have an equivalent numeric representation of +735 feets
find the intercept of the line please help
Answers
Answer:
x-intercept: -5/2
y-intercept: 15/4
Step-by-step explanation:
to find x-intercept set y = 0
-6x + 4(0) = 15
-6x = 15
x = -15/6
x = -5/2
to find y-intercept set x = 0
-6(0) + 4y = 15
4y = 15
y = 15/4
Answer:
y-intercept is -2.5 and x-intercept is 3.75
Step-by-step explanation:
I posted a photo on how I got this
Hope this helped
Which of the following points fall above the line y = x ??
a) (2, 2)
b) (-4,-5)
c) (3, -3)
d) (6,4)
e) (0,9)
Answers
Answer:
a) (2,2)
Step-by-step explanation:
as X=2 and y=2
y=x
A family smoothie recipe calls for strawberry juice and apple juice. This equation represents the proportional relationship between the number of cups of strawberry juice (s) and apple juice (a) in the recipe.
Answers
Answer:
21
Step-by-step explanation:
21 divided by 7 is three: to the third power of 11 so your answer is 21, I think
The length of a square park is 6 miles. What is the area of the park?
Answers
Answer:
36 miles.......................
4.I need help this is timed!!
Answers
Answer:
c. (-1, -2)
Step-by-step explanation:
The solution is the point of intersection of the lines.
Read that point off the graph.
Start from the point where the x-axis and the y-axis intersect. Go left 1 unit. That is x = -1. Now go down 2 units. That is y = -2. The point that has x-coordinate -1 and y-coordinate -2 is the point (-1, -2). That is the solution.
The point is (-1, -2).
Answer: C. (-1, -2)
What information do you need to know to write an equation relating two quantities that have a proportional relationship?
o constant of proportionality and variable to represent other quantities
O equivalent ratios and units
constant of proportionality and equivalent ratios
variable to represent unknown numbers
No new data to save. Last checked at 5:30pm
Submit Qu
Bi
ere to search
Answers
Answer:
so C but might be A
Step-by-step explanation:
Two quantities have a proportional relationship if they can be expressed in the general form y = kx, where k is the constant of proportionality. In other words, these quantities always maintain the same ratio. That is, when you divide any pair of the two values, you always get the same number k.
good luck, i hope this helps :)
Write [tex]7^{-3}[/tex] as a fraction
Answers
Answer:
[tex]\frac{1}{343}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^{m} }[/tex] , then
[tex]7^{-3}[/tex]
= [tex]\frac{1}{7^{3} }[/tex] = [tex]\frac{1}{343}[/tex]
for brainiest:):):):):)
Answers
Answer:
the ratio of wheat cereal to rice cereal is 1:6 and the value is 1/6 or 0.16666
Step-by-step explanation:
if 1 1/2 = 1/4 then ?=4/4
since we know the value of 1/4 we multiply 1 1/2x4=6 and 1/4x4=1 so the ratio is 1:6. The value of the ratio is the quotient, and the quotient of 1 and 6 is 1/6 or 0.16666
hope this helps sorry if im wrong and have a blessed day :)
Solve for the value of x
Answers
Answer:
x = 47°
Step-by-step explanation:
The secant- secant angle (x) is half the difference of the intercepted arcs, that is
x = [tex]\frac{1}{2}[/tex] (133 - 39)° = 0.5 × 94° = 47°
beş üzeri üç ekşi otuz bölübeş eksi iki üzeri iki işlemini sonucu aşağıdakilerden hangisidir?
A) 15
B) 78
C) 95
D) 115
cevaplarınızı bekliyorum.
Answers
Ce clasă ești sa văd daca te pot ajuta
Write the equation in slope-intercept
Answers
Plz answer
3x+5x=32.
Answers
Step-by-step explanation:
start by adding like terms which would gice us
3x+5x=8x so,
8x=32 divide by 8 on both sides so we leave x by itself giving us x=4
-6x -8y = 28
6х + 4y =-28
would this be infinite many solutions or no solutions?
Answers
6х + 4y =-28
would this be infinite many solutions or no solutions?
Find the length of the indicated
side of the similar figure.
x = [?]
Enter the number that belongs in the green box.
Answers
x=12
In a similar the sides of the figure are in proportions. Therefore we can conclude that 16/12=x/9
Then just solve for the equation!
12x=144
x=12
Please give Brainlliest!
Answer:
12
I hope this helps!
In triangle ABC, and C is a right angle. Find the value of the trig function find the sec(A) if C=25, B=20, A=15
Answers
Answer:
sec A = 5/4
Step-by-step explanation:
Sec of an angle is hypotenuse/adjacent side
In your problem, sec A = 25/20 = 5/4
It helps if you can draw a figure of the problem. Make sure you memorize the definition of each trig function
Solve the given equation
7/10X=4 3/5
Answers
Answer:
x
=
40
Step-by-step explanation:
If line a and line b are parallel, which angles are same-side Interior angles?
A.23 and 211
B. 28 and 23
C. 27 and 23
D. none of these
Answers
Answer:
i think its C. 27 tp 23 ****What’s the slope and y intercept?
Answers
Answer:
the slope is 15/2 and the y intercept is 0,0
Carla was asked to draw all the lines of symmetry for a regular pentagon. She drew
the picture below. What was Carlas mistake? Explain in detail what she did wrong
and what the correct image would look like.
Answers
Answer:
Simple, Her Pentagon is not straight
Step-by-step explanation:
Carla's Pentagon is not straight. Her symmetry line is off scale. Simply fix the Line on the pentagon And it will be correct.
Hope this helps ^
We have that the correct Pentagon should have
Her Pentagon lacks perpendicularity between the two base PointsHer Pentagon lacks perpendicularity between the two middle pointsThe vertical link to the top vertex is not straightSymmetry
This can be defined as an exact correspondence between different part of a system .
Therefore it can be said that Carla's Pentagon lacks Symmetry
Where a
Pentagon
is defined as a a shape with five sides and five angles
In this sense the is absolutely nothing with Carla's Pentagon
But if Carla is going for a pentagon with equal sides and and, Then
Her Pentagon lacks perpendicularity between the two base PointsHer Pentagon lacks perpendicularity between the two middle pointsThe vertical link to the top vertex is not straightFor more information on this visit
https://brainly.com/question/17054992
HELPP PLEASE ASAP I REALLY NEED HELP
attachment below
Answers
Therefore:
G = (3,1)
H = (0, 4)
I = (-2, -3)
H: (-4, 0)
I: (3, -2)
Picture is below...........................
Answers
Answer:
C or A
thats all i know hope it helps
Solve the equation 3(f-1)+f= 1
Answers
Answer:
F = 1
Step-by-step explanation:
3(f-1) + f =
3(1 - 1) + 1 =
3(0) + 1 =
0 + 1 =
1
Therefore F = 1 hope this helped! Please give me a 5 star rating????
Answer: f=1
Step-by-step explanation: 3(f−1)+f=1
3(f−1)+f=1
(3)(f)+(3)(−1)+f=1
3f+−3+f=1
(3f+f)+(−3)=1
4f+−3=1
4f−3=1
4f−3+3=1+3
4f /4 = 4 /4
f=1
Will give brainliest
Answers
Answer:
c
Step-by-step explanation:
Answer:
I'm not 100% sure, but i think it's C. :)
Step-by-step explanation:
i think