Answer:
-64.
Step-by-step explanation:
f(x)=-x^2-4x-19 Replacing x by -9:-
f(-9)= -(-9)^2-4(-9)-19
= -81 + 36 - 19
= 36 - 100
= -64.
Answer:
-64
Step-by-step explanation:
f(x)=-x^2-4x-19
Let x = -9
f(-9) = - (-9)^2 -4(-9) -19
= -81 +36 -19
=-64
solve by completing the square pls show work i will mark brainliest
Answer:
[tex]3(x-1)^2 +6[/tex]
Step-by-step explanation:
Write [tex]3x^2-6x+9[/tex] in the form: [tex]x^2 + 2ax + a^2[/tex].
Factor out 3.
[tex]3(x^2 -2x+3)[/tex]
Add and subtract [tex]\left(-1\right)^2\:[/tex].
[tex]3\left(x^2-2x+3+\left(-1\right)^2-\left(-1\right)^2\right)[/tex]
You dont have to write this section down but its for notes:
[tex]x^2+2ax+a^2=\left(x+a\right)^2[/tex]
[tex]x^2-2x+\left(-1\right)^2=\left(x-1\right)^2[/tex]
Continue writing this down to show work:
Complete the square
[tex]3\left(\left(x-1\right)^2+3-\left(-1\right)^2\right)[/tex]
Simplify
[tex]3\left(x-1\right)^2+6[/tex]
Which expression is equivalent to
-9 - 9?
–9- (-9)
0-9 + (-9)
Submit Answer
0-9 +9
|-9- (-9)
-9 - 9 is the same that -9 + (-9)
please help me............................
Answer:
B.
Step-by-step explanation:
A triangle has three angles. The first angle measures 20 less than a number. The second triangle is three
times the number. The third is the number. What are the measurements of each of the three angles in this
triangle?
Answer:
first angle is 20, 2nd is 120, 3rd is 40.
Step-by-step explanation:
with these words, "20 less than a number, Three
times the number, is the number." We can set up the equation x-20+3x+x = 180. combine like terms and we get 5x-20=180. add 20 to both sides to get 5x=200 then divide 200 by 5x to get x = 40. We can then plug 40 into each of the expressions, x-20, 3x, x, to get our angles.
Name each angle four ways.
Answer:
right angled triangles
find the square root of 169 step by step explain
Answer:
13
Step-by-step explanation:
13 x 13 = 169
If some one could figure out the x and y are
The problem is
3x+4y=50
-2x=y
Answer:
x = -10
y = 20
Step-by-step explanation:
y = -2x
so
substituting the value in equation ii
3x + 4y = 50
or, 3x + 4(-2x) = 50
or, 3x + (-8x) = 50
or, 3x-8x = 50
or, -5x = 50
so, x = -10
so
y = -2x
or, y = -2*(-10)
so, y = 20
I need help rounding numbers to the nearest tenth, hundredth and thousandth
Answer:
hey friend
what's your question
CAN SOMEONE HELP PLEASE.GIVING 25 POINTS
Luke recorded the grade-level and instrument of everyone in the middle school
School of Rock below.
Seventh Grade Students
Eighth Grade Students
Instrument # of Students
14
Instrument # of Students
Guitar
5
Bass
9
Drums
9
Keyboard
9
Guitar
Bass
Drums
Keyboard
13
15
6
Based on these results, express the probability that an eighth grader chosen at
random will play an instrument other than bass as a fraction in simplest form.
Answer:
35/48
Step-by-step explanation:
You just want to focus on the 8th graders. Add add the total number of students together to get your denominator. Then just put what your # of bass students are and that is your probability in fraction form. ( the fraction can't be simplified smaller than it already is.)
Mario is 68.5 inches tall. Tyler is 63.25 inches tall. How much taller is Mario than Tyler
Answer:
5.25inches
Step-by-step explanation:
difference in height = 68.5-63.25 =5.25
Height of Mario Hm = 68.5 inches
Height of Tyler Ht = 63.25 inches
Evidently, Hm > Ht
Now difference = Hm - Ht = 68.5 - 63.25
= 5.25 inches
Answer: Mario is 5.25 inches taller than Tyler.
b) 20 labourers complete the construction of a building in 24 days. In how many days would 16 labourers complete the construction?
Answer:
16 labourers complete the construction
in 30 days
Step-by-step explanation:
mark me as a brainlist answer
4/5 divided by 3 fraction.......
Answer:
4/15
Step-by-step explanation:
[tex]\frac{\frac{4}{5} }{3}=\frac{4}{5}(\frac{1}{3})=\frac{4}{15}[/tex]
Evaluate with help of distributive property :
i. 425 x 136 ii. 4005 x 67
Answer:
1 : 57,800.
2: 268,335
Step-by-step explanation:
hope it helps you
The expressions are evaluated using distributive property below -
We have -
i. 425 x 136
ii. 4005 x 67
We have to evaluate them with help of distributive property.
State the property of distributivity of multiplication over addition.Distributive property of multiplication over addition :
a × (b + c) = a × b + a × c
According to question, we have -
i. 425 x 136
ii. 4005 x 67
Now -
425 x 136 = 425 x (6 + 30 + 100) = 425 x 6 + 425 x 30 x 425 x 100
and
4005 x 67 = 4005 x (60 + 7) = 4005 x 60 + 4005 x 7
Hence, the evaluation using distributive property is done.
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A roof repairer works out that he will need to work with a colleage charges $20 per hour. In the end, they took 6 hours to fix the roof.
a. Write an expression with parentheses to describe how much the homeowner ownes for labor.
b. Evaluate your expression to calculate the cost of the labor.
a) 20(x)=y
b) $120
Let x= number of hours
Let y= Cost of labor
20 will remain constant, what matters is how many hours are being worked. If it's $20 per hour then it's safe to assume 1 hour is 20 dollars worth of labor. Due to it being per hour you have to multiply the rate by however many hours worked to get your final cost.
Solve for x: 3x - 5 + 2x = 25 - 5x
Answer:
x=3
Step-by-step explanation:
Add 2x and 3x
5x-5=25-5x
move -5x to the other side by adding 5x on both sides:
10x-5=25
Add 5 on both sides:
10x=30
Divide 10 on both sides:
x=3
Hope this helps!
Answer:
Step-by-step explanation:
5x - 5 = 25 - 5x
10x - 5 = 25
10x = 30
x = 3
,
20. In the figure, O is the centre of the concentric circles of radii 17 cm
and 10 cm respectively. Chord AD of the larger circle cuts the smaller
circle at B and C such that AB = 9 cm. Find
(a) the distance of AD from the centre,
Answer:
I confirm my answer : 8(cm)
Step-by-step explanation:
In the triangle OAB, BO²=AB²+AO²-2*AB*AO*cos( BAC)
cos (BAC)=9²+17²-10²/(2*9*17)=15/17
AC/AO=cos(BAC) ==> AC=17*15/17=15
OC²=AO²-AC²=17²-15²=64
OC=8 (cm)
Solve the fraction problems and reduce the answer to its lowest form:-
1)7/10×2/21
2)9/16×10/21
3)11/12×26/55
4)2/6×18/12×2/3
5)5/6×9/10
Answer:
1/1515/5613/301/33/4Step-by-step explanation:
1) 7/10 × 2/21
1/15
2) 9/16 × 10/21
90/336
15/56
3) 11/12 × 26/55
13/30
4) 2/6 × 18/12 × 2/3
72/216
1/3
5) ⅚ × 9/10
45/60
3/4
Using deductive reasoning, write the converse, inverse, and contrapositive of an if-
then statement.
Answer:
give brainliest please I need it to level up
Step-by-step explanation:
p -> q
converse
~p-> ~q
inverse
q-> p
Contrapositve
~q-> ~p
What is the solution to the equation 9(w – 4) – 7w = 5(3w - 2)?
34
Ow=-13
Ow=-2
6
Ow= 13
Ow= 26
Answer:
w=-2
Step-by-step explanation:
9(w-4)-7w=5(3w-2)
9w-36-7w=15w-10
9w-7w-15w=-10+36
-13w=26
w=-2
Solve for M
-3+m/ 9 = 10
Step-by-step explanation:
-3+m/9=10
m/9=10+3
m/9=13
m=13×9
m=117
Note:if you need to ask any question please let me know.
Which function describes the granh below?
Answer:
second one Step-by-step explanation:
if AC = 72 and BC = 32, what is the length of AB
Answer:
104
Step-by-step explanation:
solution :
AC = 72
BC = 32
AB = AC + AC
= 72+32
= 104#
Am i right ?
A store donates 3% of total sales to a charity. Mr. Winn bought 4 jackets at the store. Each jacket had a price $150. how much did the store donate to charity because of the jackets Mr. Winn bout?
Answer:
$18
Step-by-step explanation:
3%=0.03
$150*0.03=$4.50
$4.50*4=$18
2a) what is the inverse of -134
2b) what is the inverse of 5/6
Answer:
2a ) 4/-13
2b) 6/5
Find the measure of the given angle.
Answer:
132
Step-by-step explanation:
What’s the answer to this? Please send help
Answer:
C
Step-by-step explanation:
What is 463,954 rounded to the nearest ten thousand?
400,000
460,000
463,000
463,900
7x -3x = 20?
I do not know what this is…
7x-3x = 20
Simplify by subtracting:
4x = 20
Divide both sides by 4:
X = 5
Answer:
7x-2x=20
6x=20
6x÷6=20÷6
x=16.67
Diego started with this shape Diego moves the shape down, turns it 90 degrees clockwise then moves the shape to the right
Transformation involves changing the position and/or dimension of a shape, a line or a point.
I've added as an attachment, the result of the transformation.
From the question, the following transformations were performed by Diego.
Move downward ----- > Turn 90 degrees clockwise ----- > Move to the right
Move downward
When a shape is moved downward, the new position of the shape will be directly under its previous location
Turn 90 degrees clockwise
This means that the shape will be rotated, 90 degrees to the right. However, the position of the shape will remain unchanged.
Move rightward
When a shape is moved rightward, the new position of the shape will be directly to the right of its previous location
Refer to attachment for further explanation
Read more about transformations at:
https://brainly.com/question/11709244
find the distance between the two points in simplest radical form
The distance between the two points (7, - 1) and (9, - 9) is,
d = √68
We have to given that,
To find the distance between the two points (7, - 1) and (9, - 9)
Since, The distance between two points (x₁ , y₁) and (x₂, y₂) is,
⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²
Hence, We get;
The distance between the two points (7, - 1) and (9, - 9) are,
d = √ (9 - 7)² + (- 9 + 1)²
d = √4 + 64
d = √68
Therefore, the distance between the two points (7, - 1) and (9, - 9) is,
d = √68
Learn more about the coordinate visit:
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