Find the value of from the following right triangle.
plzzz help i will mark you as brainliest
Answer:
12
Step-by-step explanation:
by Pythagoras theorem,
P²+B² =H²
5²+B²=13²
B²= 13²-5²
B²= 169-25
B²= 144
B=√144
B= 12
plz answer this Solve y+8≥9. Graph the solution.
Answer:
y≥1
Step-by-step explanation:
y+8 ≥ 9
-8 -8
______
y≥1
i hope it makes sense(i tried to make it look like how you would do it on paper)
A grocery store sells a bag of 7 oranges for $2.80. What is the unit cost?
Answer:
The quadratic equations and their solutions are;
9 ± √33 /4 = 2x² - 9x + 6.
4 ± √6 /2 = 2x² - 8x + 5.
9 ± √89 /4 = 2x² - 9x - 1.
4 ± √22 /2 = 2x² - 8x - 3.
Explanation:
Any quadratic equation of the form, ax² + bx + c = 0 can be solved using the formula x = -b ± √b² - 4ac / 2a. Here a, b, and c are the coefficients of the x², x, and the numeric term respectively.
We have to solve all of the five equations to be able to match the equations with their solutions.
2x² - 8x + 5, here a = 2, b = -8, c = 5. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(5) / 2(2) = 8 ± √64 - 40/4. 24 can also be written as 4 × 6 and √4 = 2. So x = 8 ± 2√6 / 2×2= 4±√6/2.
2x² - 10x + 3, here a = 2, b = -10, c = 3. x =-b ± √b² - 4ac / 2a =-(-10) ± √(-10)² - 4(2)(3) / 2(4) = 10 ± √100 + 24/4. 124 can also be written as 4 × 31 and √4 = 2. So x = 10 ± 2√31 / 2×2 = 5 ± √31 /2.
2x² - 8x - 3, here a = 2, b = -8, c = -3. x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(-3) / 2(2) = 8 ± √64 + 24/4. 88 can also be written as 4 × 22 and √4 = 2. So x = 8 ± 2√22 / 2×2 = 4± √22/2.
2x² - 9x - 1, here a = 2, b = -9, c = -1. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(-1) / 2(2) = 9 ± √81 + 8/4. x = 9 ± √89 / 4.
2x² - 9x + 6, here a = 2, b = -9, c = 6. x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(6) / 2(2) = 9 ± √81 - 48/4. x = 9 ± √33 / 4 .
mark me as brilinist please
Answer:
.4
Step-by-step explanation:
2.80/7=.4
7 x 0.4 = 2.8
please l, I really need help like ASAP. my thing ends in 5 minutes!!!!
Answer:
it would be (-7,-6)
x=-7, y=-6
Step-by-step explanation:
Marco's height is 63 inches. Marco's height is 3 inches less than 1.5 times Jennifer's height. What is Jennifer's height in inches? 40 in. B 44 in. C 64.5 in. D 58.5 in.
Answer:
B. 44 in.
Step-by-step explanation:
Let Jennifer's height be x inches, then:
1.5x - 3 = 63
1.5x = 66
x = 66/1.5
= 44 in.
Part A: find the measure of x and y
Part B: choose the correct degree measure for arc JKL
Answer:
x = 7
y = 4
Arc JKL = 262°
Step-by-step explanation:
Find the diagram attached
Using the theorem;
Sum of opposite angle of the quadrilateral is 180°
7x+131 = 180
7x = 180-131
7x = 49°
x = 49/7
x = 7
Similarly;
11x+y+99 = 180°
11(7)+y+99 = 180°
77+99+y = 180
176+y = 180
y = 180-176
y = 4
arc JKL is the obtuse angle at the centre
Arc JKL = 360-(angle at the centre)
Angle at the centre is twice angle at the circumference.
Angle at the centre = 2(7x)
Angle at the centre = 2(49)
Angle at the centre = 98°
Arc JKL = 360-98
Arc JKL = 262°
help me I need this now!!!!!!!!!
Answer:
45
Step-by-step explanation:
All angles of a triangle should add up to 180
35 + 80 + 45 = 180
what is 8/5 + 7/5
i would like to know
Answer:
3
Step-by-step explanation:
Answer:
15/5, or 3
Step-by-step explanation:
8/5 + 7/5
= 8+7/5
= 15/5
= 3
PLEASE MARK AS BRAINLIEST! <3
Determine the value of x and y in the following systems of equations. 3x+y=9 x-y=-1
Answer:
x=2, y=3. (2, 3).
Step-by-step explanation:
3x+y=9
x-y=-1
-------------
4x=8
x=8/4=2
2-y=-1
y=2-(-1)=2+1=3
Anybody good in geometry and know how to do this? Free Brainliest and points .
Answer:
im guessing the answer would be C but im not sure
before hand sorry if you get it wrong
Step-by-step explanation:
Answer:
i think its b
Step-by-step explanation:
DUE TODAY PLEASE HELP!!!!!!!!!!!!!
Cole buys a new laptop for $335. He makes a down payment of $50 and pays the rest in 6 equal monthly payments, p. What equation represents the relationship between the cost of the laptop and Cole’s payments?
cost=_____________+__________x monthly payment
_________+___+____x_________
________=_________
Why are both multiplication and addition used in the equation that represents Cole’s monthly payments?_____________________________
Answer:
Step-by-step explanation:
$335-$50 = $285
p = $285/(6 payments) = $47.50/payment
2+5t+3a-2t-4m+7-8m-2 pls help
WILL MARK BRAINLIEST!! Mr. Brown uses a modern technological machine to till his lands and perform tasks that require high power. This machine has a GDP for navigation purposes and auto-steer systems that minimize Mr. Brown’s work on his field. Which machine is Mr. Brown using?
1. seed drill
2. combine harvester
3. GIS
4. tractor
5. electric motor
find the volume of a box (cube) whose each edge is 5 cm
Answer:
Volume of cube = side*side*side = 5*5*5 = 125 cubic cm.
hope it helps you
Find the missing side of this right
triangle.
Х
7
14
x =
Answer:
Sqrt 245
Step-by-step explanation:
That's the answer
According to Pythagoras' Theorem
[tex]h^{2} = a^2 + b^2[/tex]
[tex]h^{2}[/tex] [tex]= 7^{2} + 14^2[/tex]
[tex]h^{2}[/tex] = 49 + 196
h = [tex]\sqrt{245}[/tex]
According to diagram x = sqrt 245
What is Pythagoras' hypothesis?
Pythagorean hypothesis, the notable mathematical hypothesis that the amount of the squares on the legs of a right triangle is equivalent to the square on the hypotenuse (the side inverse the right point) — or, in recognizable logarithmic documentation, a2 + b2 = c2.
Learn more about Pythagoras' Theorem here
https://brainly.com/question/343682
#SPJ2
find the commission earned or the rate of commission. Round money answers to the nearest tenth if necessary. Sells $420 Commission $31.50. I will mark brainliest. any answers on here that don't belong will be reported .
Answer:
7.5 %
Step-by-step explanation:
31.50/420 = 0.075 = 7.5 %
Answer:
7.5% commission
Step-by-step explanation:
420 x r = 31.50
420r = 31.50
r = 31.50/420
r = 0.075
multiply by 100 to get the percentage, = 7.5%
answer correctly=brainliest
What is 12-(a x3)+1 if a=3
Answer:
4
Step-by-step explanation:
12-(3×3)+1
do the multiply first
3×3=9
so,
12-9+1 = 4
Which equation represents the line that is parallel to y= 3 and passes through (-2,-8)?
A.x = -2
B.x= 3
C.y=-8
D. y= 3x - 2
Answer:
Now, as you might recall, two lines are parallel when they are always the same distance apart and never intersect. y= -8 is parallel to y=3 and it passes through the point (-2, -8). The equation of this line is y= -8.
Step-by-step explanation:
Simplify and please show working!
4x^2-25/2x^2-7x+5
Answer:
-17x2 - 14x + 10
————————————————
2
Step-by-step explanation:
STEP
1
:
25
Simplify ——
2
Equation at the end of step
1
:
25
(((4•(x2))-(——•x2))-7x)+5
2
STEP
2
:
Equation at the end of step 2
25x2
(((4 • (x2)) - ————) - 7x) + 5
2
STEP
3
:
Equation at the end of step
3
:
25x2
((22x2 - ————) - 7x) + 5
2
STEP
4
:
Rewriting the whole as an Equivalent Fraction
4.1 Subtracting a fraction from a whole
Rewrite the whole as a fraction using 2 as the denominator :
22x2 22x2 • 2
22x2 = ———— = ————————
1 2
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
4.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
22x2 • 2 - (25x2) -17x2
————————————————— = —————
2 2
Equation at the end of step
4
:
-17x2
(————— - 7x) + 5
2
STEP
5
:
Rewriting the whole as an Equivalent Fraction :
5.1 Subtracting a whole from a fraction
Rewrite the whole as a fraction using 2 as the denominator :
7x 7x • 2
7x = —— = ——————
1 2
Adding fractions that have a common denominator :
5.2 Adding up the two equivalent fractions
-17x2 - (7x • 2) -17x2 - 14x
———————————————— = ———————————
2 2
Equation at the end of step
5
:
(-17x2 - 14x)
————————————— + 5
2
STEP
6
:
Rewriting the whole as an Equivalent Fraction :
6.1 Adding a whole to a fraction
Rewrite the whole as a fraction using 2 as the denominator :
5 5 • 2
5 = — = —————
1 2
STEP
7
:
Pulling out like terms :
7.1 Pull out like factors :
-17x2 - 14x = -x • (17x + 14)
Adding fractions that have a common denominator :
7.2 Adding up the two equivalent fractions
-x • (17x+14) + 5 • 2 -17x2 - 14x + 10
————————————————————— = ————————————————
2 2
STEP
8
:
Pulling out like terms :
8.1 Pull out like factors :
-17x2 - 14x + 10 = -1 • (17x2 + 14x - 10)
Trying to factor by splitting the middle term
8.2 Factoring 17x2 + 14x - 10
The first term is, 17x2 its coefficient is 17 .
The middle term is, +14x its coefficient is 14 .
The last term, "the constant", is -10
Step-1 : Multiply the coefficient of the first term by the constant 17 • -10 = -170
Step-2 : Find two factors of -170 whose sum equals the coefficient of the middle term, which is 14 .
-170 + 1 = -169
-85 + 2 = -83
-34 + 5 = -29
-17 + 10 = -7
-10 + 17 = 7
-5 + 34 = 29
-2 + 85 = 83
-1 + 170 = 169
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
-17x2 - 14x + 10
————————————————
2
Need help please
What are some similarities and differences of the Civil Rights Movement and the Black Lives Matter Movement?
Answer:
The black lives matter movement was a reason to tell the people that we are still all the same even though we don't have the same colored skin or aren't the same gender or we dont believe in the same beliefs.
Where as the civil rights movement was to clarify that blacks and whites males and females have the same rights.
f(x) = 350(1.68)x
Is it growth or decay?
What is the initial value?
What is the rate?
Answer:
Multiply 350 by 1.68.
f(x)=588x
decay
One number is four more than a second number. Three times the first is 13 less than 2 times the second. Find the numbers
Answer:
11
Step-by-step explanation:
cuz i know lol
MORE KHAN ACADEMY! HELP ME PLEASE!
6/3+(-1/6)=?
Answer:
[tex]1\frac{5}{6}[/tex]
Step-by-step explanation:
6/3 + (-1/6) = 2 + (-1/6) = 2 - 1/6 = [tex]1\frac{5}{6}[/tex]
Answer:
If these are fractions the answer is 1 5/6
If they are not fractions the answer is 1.83
Consider the equation x^2-x-20=0
NEED HELP ASAP!!! Will mark brainlyist
Answer:
x=−4 or x=5 This is the awnser to x^2-20=0
Someone plz help me I will give brainliest
Answer:
2.25x2+2x1.00+1.50=8, 10-8 =$2.00
Step-by-step explanation:
Answer:
5.5
Step-by-step explanation:
1 point
Jerry sells a particular type of coin online. The amount he charges his
customers for the coins includes shipping. Jerry uses the equation shown
below to determine the total amount (y), in dollars, he will charge for x
coins. y = 32.95x + 12.95 A. How much does Jerry charge a customer for 10
coins?
y=32.95+12.95
Write an equation with a slope of −4.4and a y-intercept of 6.8
A. =−4.4−6.8
B. =4.4+6.8
C. =6.8−4.4
D. =−4.4+6.8
Answer:
The answer is
[tex]y = - 4.4x + 6.8[/tex]
Diego wrote 6/4 * 8/3 =48/4 .Explain what's Diego's mistakes was and how you know the equation is not true.
Look at the denominator. Diego did not multiply 4 times 3. He simply carried 4 into the product.
The sum of two numbers is __________ greater than either number.
a) Always
b) Sometimes
c) Never
d) Not enough information
The correct answer is b) Sometimes.
Given that a statement,
"The sum of two numbers is __________ greater than either number."
We need to fill the blank from the options provided.
The sum of two numbers can be greater than either number depending on the specific values of the numbers.
Let's consider some examples:
Example 1: If we have two positive numbers, such as 3 and 4, their sum (3 + 4 = 7) is greater than either number individually.
Example 2: If we have one positive number and one negative number, such as 5 and -8, their sum (5 + (-8) = -3) is greater than -8 but less than 5.
Example 3: However, if we have two negative numbers, such as -2 and -4, their sum (-2 + (-4) = -6) is not greater than either number individually.
Therefore, since the statement holds true in some cases but not in others, the correct answer is sometimes (b).
Learn more about Sum click;
https://brainly.com/question/31538098
#SPJ6
1.
Activity 1
Substitute each pair of coordinates to the
system of inequality below and tell whether
it is a Solution or Not Solution
2x + 5y < 10
3x - 4y = -8
a. (3,5)__________
b. (-2,-10)________
c. (5, -12)_________
d. (-6, -8)_________
e. (0,0)______
Answer:
solution e. (0,0)______b. (-2,-10)_______c. (5, -12)__________of
2x + 5y < 10