Answer:
It should be -3
Step-by-step explanation:
Answer:
42°
Step-by-step explanation:
[tex]m\angle ABD + m\angle DBC = m\angle ABC\\
2x + 2x - 3 = 81\degree \\
4x - 3 = 81\degree \\
4x = (81+3)\degree \\
4x = 84\degree \\
x = \frac{84}{4}\\
x = 21\\\\
m\angle ABD = 2x = 2*21\degree = 42\degree [/tex]
solve the following 2-step equations for x
Answer:
x = -7
Step-by-step explanation:
Step 1: Write equation
3x - 1 = -22
Step 2: Add 1 on both sides
3x = -21
Step 3: Divide both 3
x = -7
HELP ASAP !!
What is the range of the function represented by the graph ?
Answer:
b.
Step-by-step explanation:
The range means the values of y and in this graph, the values of y are 1,2,3 and 4.
Experiments are often repeated many times by the same or different scientists. What is the most important reason more than one scientist should conduct an investigation using the same methods? Group of answer choices Different scientists might perform the experiment differently. The competition makes the scientists work more carefully. More than one scientist is interested in the problem. If the results are the same, replication of the investigation helps to confirm the results.
Answer:
Different scientists might perform the experiment differently
Step-by-step explanation:
Answer: If the results are the same, replication of the investigation helps to confirm the results.
Step-by-step explanation:
How do you spell 725, 213
Seven hundred and twenty-five thousand two hundred and thirteen
the equation 3/4 [x-1]=[-3] is equivalent to?
Answer: x= (-3)
Step-by-step explanation:
3/4 [x-1] = [-3]
(x-1) = (-3) × 4/3
X-1 = -4
X= -3
which statement is true about a unit cube
Convert 4.138138 to a fraction
Answer:
4.138138=469069/500000
Step-by-step explanation:
Match the subtraction expression with the corresponding addition expression.
−9−5
Answer:
-9+(-5)
Step-by-step explanation:
This expression is correct because it has the same answer as the one you have wrote. Positive times negative is negative. Enjoy! :D
The subtraction expression with the corresponding addition expression -9 - ( -9 -(+5). The correct option is B.
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
The given subtraction expression will be solved as below:-
−9−5 = -9 - (+5)
The product of the plus and minus is always negative. Therefore, subtraction expression with the corresponding addition expression -9 - ( -9 -(+5). The correct option is B.
The missing options are given below:-
A. -9 + 5
B. -9 - (+5)
C . 9 + 5
D. 9 - 5
To know more about an expression follow
https://brainly.com/question/723406
#SPJ2
Determine the value of
b2 - 4ac
when:
a=0
b=4
C=100
Answer:
8
Step-by-step explanation:
b2 - 4ac
Replace letters with numbers
4(2) - 4(0)(100)
Multiply left to right
8 - 4(0)(100)
8 - 0(100)
8 - 0
Answer - 8
The drama club is planning a musical. They have $610, but they estimate the entire production will cost $1100. How many ticket must they sell at $5 each to at least break even?
Answer:
They need to sell 98 tickets if they sell them at $5 a ticket.
Step-by-step explanation:
Answer:
we.,fbfcmnwecj wj vne jhbhjgfewnfvcwc
ewc mwevjwebvjewbjhfvwjevj anddddd.....thats it!
Step-by-step explanation:
Have a nice day mister or miss ;) :P :)
Pllls help asap
Which is a solution to (x - 3)(x+9) = -27?
O x = -9
Ox= -3
O x = 0
O x = 6
Answer: x = 0
Step-by-step explanation:
Take it slow and do one problem at a time. Multiply the first x by the second ( ) and then move on to -3
2x + 9x -3x -27 = -27
combine all like terms
8x - 27 = -27
add 27 to both sides
8x = 0
divide by 8 to get x alone
x = 0
which expression is equivalent to -14–6?
a.-14-6
b.14+(-6)
c.-14+(-6)
d.14+6
sorry i forgot about the answer last time.
Answer:
C) -14+(-6)
Step-by-step explanation:
14+6=20
-14-6=-20
-14+(-6)=-20
Simplify
(4x+5y)(2x-3)+3xy
Answer:
Step-by-step explanation:
=(4x+5y)(2x-3)+3xy
=4x(2x-3)+5y(2x-3)+3xy
=8x²-12x+10xy-5y+3xy
=8x²-12x-5y+13xy(Answer)
A fish tank at an aquarium has a volume of 1,568 cubic feet and a depth of 8 feet. If the base of the tank is square, what is the length of each side of the tank?
Answer:
14
Step-by-step explanation:
So, if x is length, then x*x*8 is 1568. To solve, you do 1568/8, which gives you 196. The square root of 196 is 14, and 14*14*8 is 1568.
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP ME
Answer:
with what my guy lol
Step-by-step explanation:
Convert 1/3 hours to minutes
HELP PLEASEEEE
Answer:
20minutes
Step-by-step explanation:
1 hour=60minutes
1/3 of 60 minutes is 20minutes.
Pls make me the brainliest
Answer:
20 mins
Step-by-step explanation:
Step 1:
1 hour = 60 mins Ratio Hours to Minutes
Step 2:
1/3 × 60 mins Equation
Step 3:
1/3 × 60/1 = 60/3 Convert
Answer:
20 mins
Hope This Helps :)
Simplify: :
10x — 7х+3
А. Зr
В. бг
С. Зr + 3
D. 10r – 4
Answer:
[tex]10x - 7x + 3 [/tex]
[tex] = 3x + 3[/tex]
The answer is C. 3x + 3
plz answer will mark if correct
Juan has 35 flower deliveries to make. Every hour he delivers to 3 customers. Which
inequality shows the number of hours (h) when Juan will have less than 10 deliveries
left to make.
A. h - 35 > 3 (10)
B. 35 – 3h < 10
C. 35 + 3h <10
D. 3h – 35 < 10
Answer:
B. 35 – 3h < 10Step-by-step explanation:
Given
Number of flower deliveries = 35Delivery rate = 3 customers per hourNumber of hours = hRemaining deliveries after h hours:
35 - 3hInequality to show the time when less than 10 deliveries left:
35 - 3h < 10Correct choice is B.
Find the approximate side length of a square game board with an area of 199 Inches Squared
The side length of a square game board with an area of 199 inches² is 14.11 inches.
What is the area?An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely cover the surface of a closed figure.
Given:
The area of the square is 199 inches²
Calculate the length of the square as shown below,
Area of the square = The length of the square × The length of the square
199 = l² (Here l is the length of the square)
l = √199
l = 14.11 inches
Thus, the length of the board is 14.11 inches.
To know more about Area:
brainly.com/question/27683633
#SPJ2
1. Express the product of 2x2 + 7x – 10 and x + 5 in standard form.
Answer:
Step-by-step explanation:
It will be easier if you bring that binomial in-front, imo. But the main thing you want to do here is actually really easy. You have to distribute that x to every single term in the trinomial, then do the same thing for the 5. Add up everything.
Distribute the x and 5 like this:
[tex]x(2x^2+7x-10) + 5(2x^2+7x-10)[/tex]
[tex]2x^3+7x^2-10x+10x^2+35x-50[/tex]
Now combine like terms:
[tex]2x^3+17x^2+25x-50[/tex]
There's your answer. Btw, standard form means the exponents are in order high to low and all variables before constants
The product of the expression is 2x³ + 17x² + 25x - 50.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
2x² + 7x - 10 and x + 5
Multiply both expressions.
(2x² + 7x - 10) x (x + 5)
2x³ + 10x² + 7x² + 35x - 10x - 50
Combine like terms.
2x³ + 17x² + 25x - 50
Thus,
The expression is 2x³ + 17x² + 25x - 50.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
6.285 x 10 exponent of 2
Answer:
628.5
Step-by-step explanation
Since it is 10^2 you move the decimal point 2 places to the right.
Answer:
628.5
Step-by-step explanation:
When you have [tex]10^{2}[/tex] that is the same as 100 when you multiply a decimal by 100 you move the decimal two times, that's how I got 628.5
Hope that helps and have a great day!
How to solve equations using square and cube roots
I need help with this pls
please answerrr this someone at the top only
Answer:
Table and graph
x y
0 0
25 15
50 30
What is the equation of the line that passes through point (1, 1) and is
parallel to 2x - y = 3 ?
A.y=-1/2x+3/2
B.y=2x-1
C.y=2x+1
D.y=-1/2x-3/2
Answer:
Step-by-step explanation:
-y = -2x + 3
y = 2x - 3
y - 1 = 2(x - 1)
y - 1 = 2x - 2
y = 2x - 1
answer is B
Which of the following expressions is equal to ? 5 · 5 · 5 · 5 5 · 5 · 5 3
Answer:5 with an exponent of 3•55• 53
Step-by-step explanation:
Just make the equation smaller looking by putting together numbers that can be turned into one like there was 4, 5’s so turn it into 5 with and exponent of 3
The value of the expression 5⁷ / 5² will be 5×5×5×5×5. which is the correct answer would be an option (C).
What is the algebraic expression?Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.
What is an exponential function?An exponential function is defined as a function whose value is a constant raised to the power of an argument is called an exponential function.
It is a relation of the form y = aˣ in mathematics, where x is the independent variable
The expression is given below.
⇒ 5⁷ / 5²
⇒ 5⁷⁻²
⇒ 5⁵
⇒ 5×5×5×5×5
Hence, the value of the expression 5⁷ / 5² will be 5×5×5×5×5. which is the correct answer would be an option (C).
Learn more about the algebraic expression here :
brainly.com/question/21751419
#SPJ2
The question seems to be incomplete the correct question would be
Which of the following expressions is equal to 5⁷/ 5² ?
1.) 5×5×5
2.) 1/5×5×5×5
3.) 5×5×5×5×5
4.) 3
If x+y=12 and xy=15,find the value of (x^2+y^2)
Answer: [tex]x^2+y^2=\dfrac{105\pm 18\sqrt6}{2}[/tex]
Step-by-step explanation:
EQ1: x + y = 12 --> x = 12 - y
EQ2: xy = 15
Substitute x = 12-y into EQ2 to solve for y:
(12 - y)y = 15
12y - y² = 15
0 = y² - 12y + 15
↓ ↓ ↓
a=1 b= -12 c=15
[tex].\ y=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\.\quad =\dfrac{-(-12)\pm \sqrt{(-12)^2-4(1)(15)}}{2(1)}\\\\\\.\quad =\dfrac{12\pm \sqrt{144-120}}{2}\\\\\\.\quad =\dfrac{12\pm \sqrt{24}}{2}\\\\\\.\quad =\dfrac{12\pm 2\sqrt{6}}{2}\\\\\\.\quad =6\pm \sqrt{6}[/tex]
Now, let's solve for x:
[tex]xy=15\\\\x(6\pm\sqrt6)=15\\\\x=\dfrac{15}{6\pm\sqrt6}\\\\\\x=\dfrac{15}{6\pm\sqrt6}\bigg(\dfrac{6\pm\sqrt6}{6\pm\sqrt6}\bigg)=\dfrac{6\pm \sqrt6}{2}[/tex]
Lastly, find x² + y² :
[tex]y^2=(6\pm \sqrt6)^2\quad \rightarrow \quad y^2=36\pm 12\sqrt6 +6\quad \rightarrow \quad y^2=42\pm 12\sqrt6[/tex]
[tex]x^2=\bigg(\dfrac{6\pm \sqrt6}{2}\bigg)^2\quad \rightarrow \quad x^2=\dfrac{42\pm 12\sqrt6}{4}\quad \rightarrow \quad x^2=\dfrac{21\pm 6\sqrt6}{2}[/tex]
[tex]x^2+y^2=\dfrac{21\pm 6\sqrt6}{2}+42\pm 12\sqrt6\\\\\\.\qquad \quad = \dfrac{21\pm 6\sqrt6}{2}+\dfrac{84\pm 24\sqrt6}{2}\\\\\\. \qquad \quad = \dfrac{105\pm 18\sqrt6}{2}[/tex]
hi guys pls help me out :)
Leslie analyzed the graph to determine if the function it represents is linear or non-linear. First she found three points on the graph to be (–1, –4), (0, -3), and (2, 5). Next, she determined the rate of change between the points (–1, –4) and (0, -3) to be StartFraction negative 3 minus (negative 4) Over 0 minus (negative 1) EndFraction = StartFraction 1 Over 1 EndFraction = 1. and the rate of change between the points (0, -3) and (2, 5) to be StartFraction 5 minus (negative 3) Over 2 minus 0 EndFraction = StartFraction 8 Over 2 EndFraction = 4. Finally, she concluded that since the rate of change is not constant, the function must be linear. Why is Leslie wrong?
A. The points (–1, –4), (0, –3), and (2, 5) are not all on the graph.
B. The expressions StartFraction negative 3 minus (negative 4) Over 0 minus (negative 1) EndFraction and StartFraction negative 3 minus (negative 5) Over 2 minus 0 EndFraction both equal 1.
C.She miscalculated the rates of change.
D.Her conclusion is wrong. If the rate of change is not constant, then the function cannot be linear.
The reason why Leslie is wrong is because: D. Her conclusion is wrong. If the rate of change is not constant, then the function cannot be linear.
What is a linear function?A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.
This ultimately implies that, a linear function is typically used for uniquely mapping an input variable to an output variable, with the pair of points having a constant of proportionality.
Mathematically, the rate of change can be calculated by using this formula;
Rate of change = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Rate of change = (y₂ - y₁)/(x₂ - x₁)
Rate of change = (-3 - (-4))/(0 - (-1))
Rate of change = 1/1
Rate of change = 1
For the other points chosen, the rate of change is given by:
Rate of change = (5 - (-3))/(2 - (-1))
Rate of change = 8/2
Rate of change = 4.
In conclusion, Leslie is wrong is because the rate of change or constant of proportionality for these data points are not the same.
Read more on rate of change here: https://brainly.com/question/4184462
#SPJ1
Complete Question:
Leslie analyzed the graph to determine if the function it represents is linear or non-linear. First she found three points on the graph to be (-1, -4), (0, -3), and (2, 5). Next, she determined the rate of change between the points (-1, -4) and (0, -3) to be (-3 - (-4))/(0 - (-1)) = 1 and the rate of change between the points (0, -3) and (2, 5) to be (5 - (-3))/(2 - (-1)) = 8/2 = 4. Finally, she concluded that since the rate of change is not constant, the function must be linear. Why is Leslie wrong?