Answer:
x=-5/2
Step-by-step explanation:
4 x^2 +20 x +25 = 0
x^2+5x=-25/4
(b/2)^2=(5/2)^2
x^2+5x+25/4=0
(x+5/2)^2=0
x=-5/2
(Hope this helps)
please help me, not good with math
Answer:
1/4
Step-by-step explanation:
total rolls = 10+6+4+8+6+6 = 40
P(3 or 6) = number of 3's or 6's / total
= (4+ 6) / 40
= 10/40
=1/4
In a local city, the temperature at noon is -3ºC. The temperature is expected to decrease by 2.5°C each hour until the
temperature reaches -18°C. How many hours will it take for the temperature to reach -18°C?
O 6 hours
7 hours
7.2 hours
8.4 hours
Answer:
6 hours
Step-by-step explanation:
18-3= 15 degrees different between noon temperature and the reached one
15/2.5 = 6
Answer:
A
Step-by-step explanation:
E2021
wiil mark bianleast
The point (–3, –5) is shown. Which is the location of (3, –5)?
Q
T
S
R
Answer:
T
Step-by-step explanation:
Because the point (3,-5) is simply the point with coordinates (-3,-5) reflected on the y-axis.
Answer:
T
Step-by-step explanation:
(3, - 5) is represented by point T.
This is a math problem on my summer homework assignment and I'm not sure how to do it.
5x-23=45^2+65x
Answer: x=-34.13
Step-by-step explanation:
This problems seems to ask you to solve for x. You want to get like terms on the same side and solve for x.
5x-23=45²+65x
5x-23=2025+65x
-60x=2048
x=-34.13
find the y intercept
giving brainlist if correct
question is on ss
Answer:
( 0,-8) is the y intercept
Step-by-step explanation:
y = -3x -8
This is in slope intercept form
y = mx+b where m is the slope and b is the y intercept
-3 is the slope and -8 is the y intercept
( 0,-8) is the y intercept
what is the range of the function graphed below ?
Answer:
the answer is the first one
Step-by-step explanation:
domain and range are x and y so you find all the y's
Answer:
B
Step-by-step explanation:
On edge
If 2a+1/2a=10 find : 4a2+1/4a2
Answer:
98
Step-by-step explanation:
(2a + [tex]\frac{1}{2a}[/tex] )² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] , thus
10² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] ( subtract 2 from both sides )
100 - 2 = 4a² + [tex]\frac{1}{4a^2}[/tex] , that is
4a² + [tex]\frac{1}{4a^2}[/tex] = 98
Steven spent 2 hours and 30 minutes to attend 3 classes. If it took him the same amount of time to attend each class, how long would it take him to attend 5 classes?
Answer:
about 4.17 hours
Step-by-step explanation:
To solve the time for each class, you do 2.5 hours divided by 3. Then you take this value and multiply by 5 since there are 5 classes. After you do this, you should get 4.17 hours roughly.
does anybody know the answer for this ??
Answer:
C
Step-by-step explanation:
5/8 y-3/8 y + 2y=
2/8 y +2y common denominator
2/8 y + 16/8 y =
18/8 y =9/4 y
Please help ASAP, hehdjehbdhdi
Answer:
[tex]x = 7[/tex]
Step-by-step explanation:
[tex]2x + 5 = 3x - 2 \\ 2x - 3x = - 5 - 2 \\ - x = - 7 \\ x = 7 \: \: degrees[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
____________________________________
Hey!!
Solution2x+5=3x-2(being vertically opposite angles)
or,2x-3x=-2-5
or,-x=-7
X=7
So the value of X is 7.
Hope it helps
Good luck on your assignment
Stay safe...
___________________________________
List 2 ways that two-step equations can be used in real life!
* brainliest for a correct answer *
Answer:
Here
Step-by-step explanation: You may need to add how many cups of flour into a cake freehand to do this you may need to test numbers adding and subtracting witch is a two step probelem, And you can also need to devide a multiplication probelem to divide something.. so there is my explaination!
The expression w^4 – 36 is equivalent to..?
Answer:
w⁴ - 36
=> ( w² )² - ( 6 )²
=> ( w² + 6 ) ( w² - 6 )
=> w² + 6 = 0 and w² - 6 = 0
=> w = √-6 and w = √6
The value of w is √-6 and √6 .
What is an identity?An identity is an equation that is true for all values of the variables.
For example:
The above equation is true for all possible values of x and y, so it is called an identity.
According to question one such identity will be used
[tex]a^{2} - b^{2} = (a+b)(a-b)[/tex]
w⁴ - 36
= ( w² )² - ( 6 )²
= ( w² + 6 ) ( w² - 6 )
= w² + 6 = 0 and w² - 6 = 0
= w = √-6 and w = √6
Hence, w is a quadratic term so it have two value √-6 , √6 .
To know more about identity here :
https://brainly.com/question/20427661
# SPJ2
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Answer:
7
Step-by-step explanation:
Just multiply all numbers together.
Plz give me brainliest
Amanda bought a truck for $20,000. The value of the truck depreciates by 7 percent each year. Which of the following functions models this scenario, where x is the number of years
Which is correct:
A) ƒ(x) = x2 – 7x + 20,000
B) ƒ(x) = 20,000 – 7x
C) ƒ(x) = 20,000(1.07)x
D) ƒ(x) = 20,000(0.93)x
Answer:
It would be D
ƒ(x) = 20,000 * (0.93) ^ x
Where ^x means to the power of x
Step-by-step explanation:
What inequalities have the solution set graphed in the number line? Select two options.
Answer:
A and C
Step-by-step explanation:
hope i am right
The diameter of a circle is 16 in. Find its area in terms of pi
Answer:
64pi
Step-by-step explanation:
To find the raidus we divide the diameter by 2
Radius = 16/2 = 8
Area = pi*8^2 = 64pi
Answer:
64pi
Step-by-step explanation:
Evaluate - cd/e when c = -9, d = -20, and e = -12.
P.S. it’s not multiple choice.
Answer:
-9*-20/-12=-15
Step-by-step explanation:
Answer:
[tex] \boxed{ \frac{cd}{e} = - 15} [/tex]
Given:
[tex]c = - 9 \\ d = - 20 \\ e = - 12[/tex]
Step-by-step explanation:
[tex] = > \frac{cd}{e} \\ \\ = > \frac{( - 9)( - 20)}{( - 12)} \\ \\ = > \frac{9 \times 20}{( - 12)} \\ \\ = > - \frac{180}{12} \\ \\ = > - 15[/tex]
Solve the equation
A.-32,32
B.-8’8
C.8
D.32
Answer:
b
Step-by-step explanation:
[tex]\sqrt{64}[/tex]=±8
Answer:
B. -8 and 8
Step-by-step explanation:
To solve this equation, we need to get x by itself. To do this, perform the opposite of what is being done to the equation. Keep in mind everything must be done to both sides of the equation.
x^2=64
x is being squared. The opposite of being squared is taking the square root. Take the square root of both sides.
√x^2=√64
The exponent and square root on the left will cancel, and x will be left by itself.
x=√64
x=±8
The solutions of the equation are x=8 and x= -8
Therefore, the answer is B. -8, 8
An airliner leaves an airport going due east, flying at 350 miles per hour. Another airplane leaves the same airport at the same time going due west, flying at 400 miles per hour. How long will they be 2,250 miles apart? ( with explanation )
The expression 2(a+b)=−8.1 for certain values of a and b. Find the value of the following expressions for the same values of a and b: −0.5(a+b)
Answer:
Interpreting as: 2(a+b)=-8.1
Input:
2 (a + b) = -8.1
In Given the expression
2( a + b) = 8.1 ..........................(1)
now divide both sides of the first equation by 2 ,
2 (a + b) /2 = 8.1 /2
(a + b) = 4.05
expression -0.5(a + b) ................(2)
simply put the value of (a + b) in (2),
- 0. 5( 4.05) = -0.5 * 4.05
= 2.025
Value of expression is 2.025.
What is a expression in maths?
An expression is a set of terms combined using the operations +, – , x .
For example - 4 x − 3 or x 2 – x y + 17 .
Learn more about https://brainly.com/question/24242989
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What is the measure of
Answer:
58°
Step-by-step explanation:
subtract 32 from 90 and you get the measure of x°
hope this helps
Answer:
58°
Step-by-step explanation:
Since it is 90° angle and one side of the angle is given as 32° , inorder to get the value of angle x we must subtract the given angle that is 32°from 90°by default. Then we will get the value of x as 58°.
plzz mark brianliest
hope it help yuh..
Solve for the following equation step by step and justify your steps when using an exponential property. PLEASE HELPP
Answer:
[tex]x=5/7[/tex]
Step-by-step explanation:
[tex]7^{4x} =\frac{7^{5} }{7^{3x} }[/tex]
[tex]7^{4x} *7^{3x}=7^{5}[/tex]
[tex]7^{7x} =7^{5}[/tex]
[tex]7x=5[/tex]
[tex]x=5/7[/tex]
Answer:
x=5/7
Step-by-step explanation:
(7ˣ)⁴= 7²*7³/7³ˣ7⁴ˣ= 7⁵⁻³ˣ4x=5-3x4x+3x=57x=5x=5/7Consider the sequence 256,128,64,32 find the 12th term of the sequence
Answer:
It would be 0.125
Step-by-step explanation:
I hope this helps you.
2x+3y=12 complete the missing value in the solution to the equation ( 8,)
Answer:
Missing value is -4/3 and whole solution can be written as ( 8,-4/3)
Step-by-step explanation:
Given equation 2x+3y=12
solution ( 8,)
solution is form (x,y) hence in (8,) x is given as 8 while y is missing to find y
we will plug 8 as value of x in equation 2x+3y=12. From this equation we will find the missing value.
2x+3y=12
=> 2*8+3y=12
=> 16 + 3y = 12
=> 3y = 12-16= -4
=> y = -4/3
Thus, missing value is -4/3 and whole solution can be written as ( 8,-4/3)
Find the height of the cylinder described below. Use 3.14 for it and round answer to the
nearest tenth.
Volume = 1808.64 fr?; radius = 6 ft.
Answer:
Step-by-step explanation:
r = 6 ft
Volume of cylinder = 1808.64 cubic ft
πr²h =1808.64
3.14 * 6 * 6 * h =1808.64
113.04* h =1808.64
[tex]h=\frac{1808.64}{113.04}\\[/tex]
h = 16 ft
The surface area of a cube is 600 square inches. What is the area of one of its faces?
A.
6 square inches
B.
36 square inches
C.
75 square inches
D.
100 square inches
Answer:
D.
Step-by-step explanation:
area of a square = side^2
area of a cube = 6 x side^2
let the side be a .
6a^2 = 600
=> a^2 = 600/6
=> a^2 = 100
Hence the area of one of its faces is 100 square inches.
or in plain terms without using those formulas,
6 faces of the cube have 600 square inches
=> 1 face of the cube has 600/6 = 100 square inches
find the solution x/2-1/5=x/3+1/4 is
the value of x is 2.7.
i hope it will help you
THANK YOU
will reward brainliest, LOOK AT THE IMAGE AND PLEASE ANSWER IN DESCENDING ORDER!
Answer:BCA
Step-by-step explanation:
Nate is constructing a tangent line to a circle he drew from a point outside the circle. Once he has the circle and the point is drawn, what is his next step?
Answer:
The next step is to find the point on the circle which makes a tangent line that passes through the outside point.
Step-by-step explanation:
A tangent line to a circle is a line that touches the circle at exactly one point. You need two points to draw a line. You already have one point and the circle, then you need the other point, which lies on the circle. These two points have to lie on the same line. Notice that there are two possible tangent lines.
Answer:
connect the center of the circle to the point outside the circle
Step-by-step explanation:
Sara is having a dinner party for four friends and needs to reduce the serving size of the meatloaf recipe. She uses the equation StartFraction x over 4 EndFraction = 5. How many servings did the recipe originally make?
4
5
9
20
Answer: 20 servings
Step-by-step explanation:
From the question, Sara is having a dinner party for four friends and she needs to reduce the serving size of the meatloaf recipe. Sara used the equation x/4=5 . To get the number of servings the recipe originally made, we have to find the value of x.
x/4 = 5
x = 4 × 5
x = 20
This means that the recipe that was used originally made 20 servings.
Answer: D. 20 servings
Step-by-step explanation: I got it right on edge
