Step-by-step explanation:
the answer is B..........
Using the substitution method, Vito is solving the following system of equations algebraically:
y + 3x =-4
2x – 3y =-21
Which equivalent equation could Vito use?
A) 2(-3x - 4) + 3x =- 21
B) 2(3x - 4) + 3x =- 21
C) 2x - 3(-3x – 4) =- 21
D) 2x - 3(3x - 4) =- 21
Answer:
The correct answer is Option C: [tex]2x-3(-3x-4)=-21[/tex]
Step-by-step explanation:
The given equations are:
[tex]y + 3x =-4\ \ \ Eqn\ 1\\2x-3y =-21\ \ \ Eqn\ 2[/tex]
The equations have to be solved using substitution method. In substitution method we find the value of a variable from one equation and put it in the other equation.
To find the value, we usually choose the equation in which a variable without any coefficient is available.
From equation 1
[tex]y +3x = -4\\y = -3x-4\\[/tex]
This value of y will be put in equation 2
[tex]2x-3(-3x-4)=-21[/tex]
It is the C option in choices
Hence,
The correct answer is Option C: [tex]2x-3(-3x-4)=-21[/tex]
Answer:
Hey, where did you get this question? Do you have answer key of this worksheets all things I need it to.
Step-by-step explanation:
Choose the answer that best completes the sentence if you know a root of a function is -2+Sqrt3i then
Answer:
The answer is D,
-2 - (square root) 3i
Step-by-step explanation:
Answer:
Step-by-step explanation:
Identify the terms in the expression 5x−3x+12
Answer:
9,8,7,6
Step-by-step explanation:
they are 6,7,8,9 backwards so its the answer
Remy walked to a friend’s house m miles away at an average rate of 4 mph. The m-mile walk home was at only 3 mph, however. Express as a fraction
a) Time Remy spent walking home.
b)Time Remy spent walking.
Answer:
sorry if im rong b
Step-by-step explanation:
which expression is equivalent to 3(2x + 5), no matter what value is substituted in for x
Answer:
6x +15
Step-by-step explanation:
A triangle has a base of 15 feet and a height of 9 feet. What is the area of the triangle? Label the figure. Write the formula, plug in the values, and solve.
Answer:
135...................
The swim team manager needs to purchase award ribbons for competitions. The table shows the sizes of packages he can purchase.
For a package of 500 ribbons, what is the cost per ribbon?
A.
$0.15
B.
$0.21
C.
$0.67
D.
$0.07
Fill in the missing values
in the table below:
Based on the information the values in the table will be:
20 35
4. 7
15. 21
What's proportion?In mathematics, proportions refer to the equality of two ratios. A ratio is a comparison of two quantities, typically expressed as a fraction. When two ratios are equal to each other, they form a proportion.
A proportion can be written in the form:
a/b = c/d
Here, "a" and "b" are the terms of the first ratio, and "c" and "d" are the terms of the second ratio. The proportions state that the ratio of "a" to "b" is equal to the ratio of "c" to "d".
20/35 × 7
= 4
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Which of the following is a prime number between 10 and 20?
A.
14
B.
11
C.
18
D.
15
Answer:11
Step-by-step explanation:
Answer:
B - 11
Step-by-step explanation:
The number of snowboarding accidents reported weekly during one winter season at the Fun
Mountain Resort:
12, 15, 6, 8, 12, 17, 10, 8, 7, 13, 14, 16, 8, 18, 11
Whats the mean?
Answer:
11.7
Step-by-step explanation:
add all the numbers then divide the answer with the number of how many numbers they are
12 +15+ 6+ 8 +12+17 +10+8+ 7+ 13+ 14 +16 +8+18+11=175
175/15=11.6666666667
round the answer to the nearest whole number=11.7
14 subtracted from a number, Divided by three, equals -8
Step-by-step explanation:
x-14 = -8
3
x-14= -8×3
x-14= -24
x= -24+14
x = -10
hope it helps..
The equation is of the form [tex]x=-10[/tex].
What is the equation?
The definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
Here given that,
Here, [tex]14[/tex] subtracted from a number, Divided by three, equals [tex]-8[/tex]
So,
[tex]x-14 = -8[/tex]
Multiplify right side with [tex]3[/tex]
[tex]x-14= -8(3)\\x-14= -24\\x= -24+14\\x = -10[/tex]
Hence, the equation is of the form [tex]x=-10[/tex].
To know more about the equation
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FIND THE SLOPE 4,0 6,3
Answer: slope is 3/2
Step-by-step explanation:
Answer:
slope: m = 3/2
Step-by-step explanation:
In a right triangle, if the length of one leg is 3 cm and the length of the other leg is 4 cm, what is the length of the hypotenuse?
A. 5 cm
B. 3 cm
C. 4 cm
D. 35 cm
Answer: 5 cm
Step-by-step explanation:
9 + 16 = c^225 = c^2[tex]\sqrt{25[/tex] = c5 = cAnswer:
5
Step-by-step explanation:
BRAINLIEST IF U ANSWER!!
Answer:
d 3/1 = 12/4
Step-by-step explanation:
3 ft is to 1 yd like 12 ft is to 4 yd
3/1 = 12/4
Answer:
Option D
Step-by-step explanation:
3/1 = 12/4
Convert 12/4 to its simplest form (that is divide the numerator and denominator by 3 ) to get 3/1.
Hope this helps you.
can you guys please help.
Answer:
The saturday median is equal to the sunday median.
Step-by-step explanation:
Arrange your numbers in numerical order.
Count how many numbers you have.
If you have an odd number, divide by 2 and round up to get the position of the median number.
If you have an even number, divide by 2. Go to the number in that position and average it with the number in the next higher position to get the median.
I need help someone help me
Answer:
Hey! So I think the answer is A! I'm so sorry if its wrong, I'm trying to get points so could you mark me as brainliest? Bye and stay safe!! <3
Step-by-step explanation:
Which inequality has the solution shown below?
The area, A, of a triangle is one-half the product of the triangle's base and height. A = A = (12)(5) A = ( b+ h) A = A = (b·h)
Answer:
A = (1/2) * b * h
Step-by-step explanation:
A triangle is a polygon with three sides and three angles. There are different types of triangles such as obtuse, scalene, right angle, equilateral and isosceles triangle.
The area of a triangle is half the product of the base of the triangle and the triangle height. The area is given by the formula:
A = (1/2) * b * h
A = (1/2)bh = 0.5bh
Where A is the area of the triangle, b is the bae of the triangle and h is the height of the triangle.
Which is a composite number? 81,41,71,61
Answer:
81
hope this helps:)
The map shows different locations at a county fair. Each unit of the coordinate plane represerits 1 meter.
Which expression shows how to use the coordinates of the Ferris wheel and ticket booth to find the distance between
them?
A) (-3) - 2
B) 4 - 4
C) 2 - 4
D) 4 - (-3)
Step-by-step explanation:
answer is a I got it right on the quiz
Answer:
A
Step-by-step explanation:
The figure below is a net for the box to the right. What is the surface area of the box? T 1.5 feet 1.5 feet lid + + 2 feet 2 feet 1.5 feet bottom 1.5 feet T 1.5 feet 1 2 feet 4 feet 2 feet 2 feet 4 feet 34 square feet 12 square feet 33 square feet 24 square feet Done
Answer:24 feet
Step-by-step explanation:I used it and it seem like I got it correct
Please help for brainliest
Answer:
I think it is C.
Step-by-step explanation:
Please mark brainliest I am knew at this
What is the range of this function?
Please help
Answer:
B
Step-by-step explanation:
The range is all numbers that Y can range from, so looking at the chart we can see that the highest value on the top of the curve that Y reaches is 4. Looking at the very start of the line and the very end of the line, you can see that -inf is definitely in the range of the y values. So, we can write it like this:
-inf<y<=4
which happens to be B
Find an equivalent ratio in simplest terms:
54 : 70
Answer:
27/35.
I can break it down for you to understand if u want.
Step-by-step explanation:
Answer:
27/35
Step-by-step explanation:
It is known that the distance in metres through which a body falls freely varies directly as the square of the time taken. If a body falls through 80 metres in 4 seconds, find the distance it would fall in 5 seconds.
Answer:
125 meters
Step-by-step explanation:
Let distance = d and time is t
Using the variation;
d = k t^2
So let’s us get k
80 = k * 4*2
16k = 80
k = 80/16 = 5
So for 5 seconds, the distance would be;
d = 5 * 5^2
d = 125 meters
In 2000, a population
of a city is one million
people. If it has a
doubling time of 25
years, when will its
population reach two
million?
Answer:
2025
Step-by-step explanation:
Given a starting date of 2000 with an initial population of 1 million.
If it takes 25 years for the population to double, then the population will be 2 million in 2025.
Because 2000 + 25 = 2025.
What is 30 percent off of 70?
Please explain why and how
Answer:
49
Step-by-step explanation:
10% of 70 is 7
multiply that by 3 = 21
70 - 21 = 49
what is COP in mathematics
Answer:
Coefficient of Performance
Give the gradients and the intercepts on the y-axis of the lines with the following equations. Sketch each line.
9514 1404 393
Answer:
see attached
Step-by-step explanation:
The gradient is the x-coefficient. The y-intercept is the constant. These are listed in the table in the first attachment. The graphs are shown in the second attachment.
Answer:
9514 1404 393
Step-by-step explanation:
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Kites have at least one pair of congruent opposite angles. Plsss helpp
Answer:
I mean you could have looked it up but, here is the answer...
Step-by-step explanation:
If a quadrilateral is a kite, then its diagonals are perpendicular. If a quadrilateral is a kite, then exactly one pair of opposite angles are congruent. If a quadrilateral is a kite, then one of the diagonals bisects the pair of non-congruent angles.
Kites or kite shapes have at least one pair of congruent opposite angles, and the provided statement is correct.
What are the properties of Kite shapes?
A kite is a closed shape quadrilateral which have 4 sides. In this 4 sides, the two pair of adjacent sides are equal.
Properties of kite shapes are listed below-
Two pairs of adjacent sides are equal in a kite shape.The kite has a pair of opposite angles which are equal.The long diagonal bisect the short one.Both the diagonals of the kite is perpendicular to each other.As, the kites has a pair of opposite angles which are equal.
Thus, Kites or kite shapes have at least one pair of congruent opposite angles, and the provided statement is correct.
Learn more about the kite shape here;
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