Step-by-step explanation:
Given
7x² + 19x - 6 = 0
7x² + (21 - 2) x - 6 = 0
7x² + 21x - 2x - 6 = 0
7x( x + 3 ) - 2 ( x + 3 ) = 0
(x + 3 ) ( 7x - 2 ) = 0
Either
x + 3 = 0
x = - 3
Or,
7x - 2 = 0
7x = 2
x = 2 /7
So
x = - 3 and 2/7
Hope it will help :)
Answer:
x= -3,/2/7
Step-by-step explanation:
split the second term in 7x^2 + 19x-6 into two terms 7x^2+21x-2x-6=0
Factor out common terms in the first two terms7x(x+3)-2(x+3)=0
(x+3)(7x-2)=0
Factor out the common term x+3 hope that help x= -3,/2/7
Which of the following numbers are integers? Select all that apply.
9.343
-100
8/11
53
-4
I'm too lazy to do the work by myself anyway, someone please help me thank you <3 !!
Answer:
98
Step-by-step explanation:
10-3=7
7x7=49
49 x2 = 98
Have a good day! uwu
Find the slope of each line graphed below.
Answer:
please please answer answer
Answer:
um a is the blue and d is the one that is going up and down and bis the one that goes side to side
Step-by-step explanation:
What is 1/4 of 16 need help
Answer:
16/4= 4
Step-by-step explanation:
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⠄⠄⠄⠄⠄⠄⠄⣠⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣦⡄⠄⠄⠄⠄⠄
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PLEASE HELP MEEEEEEEEE will share to explain what a dilation of (0.5x, 0.5y) would do to a figure and explain how I know that is true.
Solve the inequality >-7
I need help with this one !
Answer:
-8293
Step-by-step explanation:
so basically you use the calculator and then you - 7 - -7 = 14
so it is postitive 14
Which question below is a Statistical Question?
A. How many students have a cell phone?
B. How many months are in a year?
C. How tall are the students in your class?
D. What is for lunch today?
Answer:
C
Step-by-step explanation:
I chose C because it more detailed than the rest of the question. Everyone already knows how many months are in a year. What is for lunch today is just a normal question. How many students have a cell phone was not really detailed but it would have been different if they said "How many percentage of college students in math class uses cell phones.
Hope this helps:)
Find the value of each variable. Write answers in simplest radical form.
Answer:
1) x = 5
2) y = 5·√2
Step-by-step explanation:
1) The given parameter of the right triangle are;
The legs of the right triangle = 'x', and 5
One interior angle of the right triangle = 45°
Therefore, buy the interior angle summation property of a right triangle, we have;
The measure of the other angle, θ = 180° - 90° - 45° = 45°
From which we have;
A right triangle with an interior angle of 45° is an isosceles triangle with both legs equal
∴ The length of the other leg, x = 5
x = 5
2) By Pythagoras's theorem, we have that the square of the length of the hypotenuse, 'y', is given as follows;
y² = x² + 5²
∴ y² = 5² + 5²
y = √(5² + 5²) = √(25 + 25) = √50 = √(25 ×2) = 5·√2
y = 5·√2 in the simplest radical form.
Four-fifths of a spinach casserole is leftover after Sam has lunch. Jackie and Alicia each take 1/2 of the leftover casserole. Jackie eats only 3/4 of her portion
What fraction of a whole casserole did Jackie eat? Express your answer as a simplified fraction.
Answer:legit?
Step-by-step explanation:legit?
A carnival ride has cars that each hold 4 adult passengers. The weights of the passengers for this ride are
normally distributed with a mean of 65 kg and a standard deviation of 12 kg. Assume that the weights of
passengers are independent from each other.
Let T = the total weight of 4 randomly selected adult passengers for this ride.
Find the probability that the total weight is less than 242 kg.
You may round your answer to two decimal places.
PT <242)
Answer: 0.23
This is the answer on khan
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary).
16, 4,1,...
Find the 6th term
P, Q, R and S are four points on a circle.
PTR and QTS are straight lines.
Triangle PTS is an equilateral triangle.
Prove that triangle PQR and
triangle SRQ are congruent.
S
Note: The reason for any statement has to be written on the same line (eg. angle ABC = angle BDE because...)
Total marks: 4
Answer:
Triangle PTS is an equilateral triangle because all sides are equal lengths.
Angle TPS and angle TSP are equal because it is an equilateral triangle.
Triangle PQS and triangle SRP are congruent because of the side-angle-side theorem.
Segment PQ is congruent to segment SR because congruent sides of congruent triangles are congruent.
Segment PR is congruent to segment SQ because congruent sides of congruent triangles are congruent.
Triangle PQR and triangle SRQ are congruent because of the side-side-side theorem.
Δ PQR and Δ SRQ are congruent By SSS rule .
What is Congruence in Triangles?If the three angles and the three sides of a triangle are equal to the corresponding angles and the corresponding sides of another triangle, then both the triangles are said to be congruent.
What are the conditions of Congruent in Triangles?Two triangles are said to be congruent if they are of the same size and same shape. There are 5 conditions for two triangles to be congruent. They are SSS, SAS, ASA, AAS, and RHS congruence properties.
According to the question
P, Q, R and S are four points on a circle.
PTR and QTS are straight lines.
Triangle PTS is an equilateral triangle.
In ΔPTS ,
∠PTS = ∠TPS = ∠TSP = 60°
PT = PS = ST
In ΔPQS and ΔSRP
PS = SP (common side of triangle )
∠QSP = ∠RPS = 60°
∠PQS = ∠SRP ( Angles between same base and parallels are equal)
Therefore,
ΔPQS ≅ ΔSRP (ASA rule)
PTR = QTS (by CPCT)
PQ = SR (by CPCT)
∠QPS = ∠RSP (by CPCT)
Now , in Δ PQR and Δ SRQ
PQ = SR (proved above )
QR = QR (common side )
PR = QS (proved above )
Therefore, Δ PQR ≅ Δ SRQ (By SSS rule)
Hence, Δ PQR and Δ SRQ are congruent By SSS rule .
To know more about Congruence in Triangles here:
https://brainly.com/question/20521780
#SPJ2
need help!!!! With this math question
Step-by-step explanation:
5)
180-116=64
4y+(7y+6)+64= 180
4y+7y+6+64=180
11y+70= 180
11y= 110
y= 10°
m<C = 40°
m<D= 76°
m<DEC=64°
6)
180-161=19°
18z+3+5z-3+19=180
23z= 161
z=7°
m<L=129°
m<M=32°
m<LKM=19°
3(2x) + 4y(5)
what is the equivalent fraction
hurry please .
Answer:
6+20y
y=_14
Step-by-step explanation:
6+20y
y=_14
A brand of mixed nuts contains cashews. Tyler counts 51 nuts in
one package, 13 of which are cashews. He counts 52 nuts in another package,
10 of which are cashews. Based on these samples, estimate the percent of nuts
in a package that are cashews.
Answer:
% 23
Step-by-step explanation:
Y=?
Please Help I really need it. Im bad at this.
1. Simplify the expression
11x + 3x
Answer:
14x
Step-by-step explanation:
Step 1: Collect like terms by adding their coefficients
(11+3)x
Step 2: Add the numbers
14x
Answer:
14x
its hard to explain, but I did this problem so I know the answer look up the question maybe it can explain it!
One number is seven less than a second number. Three times the first is three more than four times the second .Find the numbers
Answer:
x = -28 and y = -21
Step-by-step explanation:
Let two numbers be x and y.
One number is seven less than a second number.
x = y-7
x-y = -7 ...(1)
Three times the first is three more than four times the second.
3x = 4y or
3x-4y =0 ...(2)
Multiplying equation (1) by 3. So,
3x-3y = -21 ...(3)
Subtracting equation (2) from (3).
3x-3y-(3x-4y) = -21
-3y+4y = -21
y = -21
Put the value of y in equation (1).
x-(-21)= -7
x+21=-7
x = -21-7
x = -28
So, the value of x and y are -28 and -21 respectively.
Valeria surveyed 700 of the students in her school about their favorite color. Students could choose between blue and purple. 58% said their favorite color was purple. How many students' favorite color was blue?
Answer:
294 people
Step-by-step explanation:
Subtract:100%-58%=42%
42%=.42 (Move the decimal to the left to times to be able to find the decimal of a percent.)
Multiply: 700*.42=294
294 people
Hope this helped!! :)
Stay safe and have a wonderful day/night!!!!!
Brainliest?!?!
2x + 3y = 7
X+ 5y = 7
Answer:
x=2
y=1
Step-by-step explanation:
Find a third number so that three numbers form a right triangle.
9,41
Answer:
40
Step-by-step explanation:
a^2+b^2=c^2
therefore c^2-b^2=a^2
41x41=1681
9x9=81
1681-81=1600
Sqrt1600=40
The third number is 40
b - 1/4 = 3 1/2 find the variable and explain how to got the answer please thanks
Answer:
b - 1/4 = 3 1/2
Step-by-step explanation:
b - 1/4 = 3 1/2
b - 1/4 = (3 + 1/2)
4b = 15
b = 15/
4
= 3.75
Can someone help me pls?Determine the measures of the unknown angles.
Answer:
y= 65
x= 30
Step-by-step explanation:
Is it a function or not a function and if why is it either a function or not a function?
Answer:
function
Step-by-step explanation:
Answer:
Yes it is a function
Step-by-step explanation:
Two inputs can have the same output, which is what is happening here. However for it not to be a function, two different outputs have to come from the same input if that makes any sense
What is the value of x if 5x + 45 = 35?
Select one:
10
-2
-10
2
Answer:
x= -2
Step-by-step explanation:
Simplifying 5x + 45 = 35 Reorder the terms: 45 + 5x = 35 Solving 45 + 5x = 35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 35 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 35 + -45 5x = 35 + -45 Combine like terms: 35 + -45 = -10 5x = -10 Divide each side by '5'. x = -2 Simplifying x = -2
Yuri's sister Karina is 12 years old. In the equation below, y represents Yuri's age in years. 12 = 3 y minus 2
Answer:
my guess is 12=1 maybe i dont really get it
Step-by-step explanation:
if your saying 3-2 then 1
Answer:
I think the answer would be 34 because you have 3 times 12 which is 36 and then minus 2 would be 34.
Step-by-step explanation:
look at the link please
Answer: Your screenshot
Step-by-step explanation:
is insufficient
Can you check my work so far and fill in the last box please? It has to do with unit rates, charts, and making equations with variables. Thanks!
Answer:
3:39
4:44
Step-by-step explanation:
Its pretty simple.
You know that 1hour is 17 customers
So if you add 1 hour + 2 hours, it'll be 3 hours, to the same on the other side of the ratio, 17+22= 39
---
You know 2hours will be 22 customers, do the same on what we did on the other one, you can add 2+2 for it to be 4, and add 22+22 to get the result, ORyou can multiply 2 times ? for it to be 4, 2x2=4,
do the same on the other side, 22×2= 44.
Find the volume of the rectangular prism. A rectangular prism has length 4 meters, width 2 meters, and height 1 meter.
Answer:
base x height the volume is 8
Step-by-step explanation:
base = 4 x 2
height is 1
so 8
10.
An 8-by-10-inch photograph was blown up into a poster. If the longer side of the poster is 55 inches long, how many inches long is the shorter side?
please i need help
Answer:
44
Step-by-step explanation:
is times 5.5