I need help on this question if you can I'll give you brainliest and 20 points
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Related Questions
PLSSSS SOMEONE HELP MEEE IM STUCK the question is below
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Answer:
x=8, y=73/3
Step-by-step explanation:
they ask to solve by substitution so from second equation find y
4x-3y= -41 isolate y
4x+41 = 3y divide both sides by 3
(4x+41)/3= y substitute this y in the first equation
5x+2y = -34
5x+2(4x+41)/3 = -34 distribute and find the common denominator
3*5x+(8x+82)/3 = -34
15x+8x+82=-34*3 cross multiply
23x = -102-82
x=-184/23=8
y=(4*8+41)/3=73/3 is about 24.333..
2. What is the solution to the equation
1/2x + 3/2(x+1) - 1/4=5?
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The answer to this question is
x=15/8
1/2x+3/2(x+1)-1/4=5
1/2x+3/2(x+1)-1/4=5
(1/2x+3/2x)+3/2-(1/4)=5
4/2x+3/2-(1/4)=5
4/2x+(3/2–1/4)-(3/2–1/4)=5-(3/2–1/4)
4/2x+0=5-(3/2–1/4)
2x=5-(6/4–1/4)
2x=5-(5/4)
2x=3 3/4
2x/2=(3 3/4)/2
x=15/4(1/2)
x=15/8
1/2x+3/2(x+1)-1/4=5 (Expand the polynomial)
(1/2x+3/2x)+3/2-(1/4)=5
4/2x+3/2-(1/4)=5
4/2x+(3/2–1/4)-(3/2–1/4)=5-(3/2–1/4)
4/2x+0=5-(3/2–1/4) (Express the fractions on the right side of the equation in the common denominator 4)
2x=5-(6/4–1/4)
2x=5-(5/4)
2x=3 3/4
2x/2=(3 3/4)/2
x=15/4(1/2)
x=
15/8 or 1 7/8 as a mixed fraction or 1.875 as a decimal numeral
PROOF
If x=15/8, then the inverse of the equation 1/2x+3/2(x+1)-1/4=5 returns
2x+(6/4–1/4)=5
2(15/8)+(6/4–1/4)=5
15/4+(5/4)=5
(15+5)/4=5
20/4=5 and
5=5 proves the root (zero) x=15/8 of the statement 1/2x+3/2(x+1)-1/4=5
C.H.
1/2x+3/2(x+1) --1/4=5
1/2 (1/x+3/ (x+1) =5+1/4
1/x + 3/x+1 =(5+1/4) ×2/1
x+ 1 +3x /x (x+1) = 10+1/2 =21/2
4x+1 = 21/2 [x^2+x]
8x+2= 21x^2+21x
21x^2 +-13 x -2 =0
a =21 b= 13 c= -2
X= [13 + -- (169 -- 4×21× -2)^1/2 ] /2×21
=[13 + - ( 169 + 168 )^1/2] /2×21
Discriminat =169+168=337 >0
Ms. Davis counts 12 large boxes and 18 small boxes of pencils in the supply cabinet. Each large box contains 144 pencils. Each small box contains 24 pencils. Estimate the number of pencils. Is your estimate an underestimate or an overestimate? The find the exact answer.
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Answer:
Estimated amount of pencils = 2040 pencils
Exact amount of pencils = 2160 pencils
Step-by-step explanation:
Estimated amount of pencils are calculated by:
rounding up the numbers to the nearest tens
large box= 144 pencils = 140 pencils
small box = 24 pencils = 20 pencils
Estimated number of pencils =
(12 × 140) + (18 × 20)
= 1680 + 360
= 2040 pencils
This is an underestimate
The exact number of pencils is calculated as:
(12 × 144 pencils ) + (18 × 24 pencils)
= 1728 pencils + 432
= 2160 pencils
ONLY ANSWER IF YOU HAVE SOLUTION OR ELSE U WILL BE REPORTED!
An unbiased dice with faces marked 1, 2, 3, 4, 5 and 6 is rolled four times. Out of four face values obtained, the probability that the minimum value is not less than 2 and the maximum value is not
greater than 5 is:
a) 1/81 b) 80/81
c) 16/81 d) 65/81
Solution with some explanation
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Step-by-step explanation:
Let us intepret this condition in our context:
"...that the minimum value is not less than 2 and the maximum value is not greater than 5"
This means that when we roll the dice, we do not want 1 or 6 to appear. Instead we wish for 2/3/4/5 to appear.
The probability of getting these four sides out of six in a roll is 4/6, or 2/3.
We have to roll this dice 4 times. Hence we raise the probability to a power of 4:
Total probability = (2/3)⁴
= (2)⁴ / (3)⁴
= 16/81. (C)
!!!I NEED THE ANSWER ASAP!!! First person to answer will get 30 points!!
You are painting your room. You mix 1/4 cup of red paint for every 1/2 cup of paint.
A.If you need to make 3 gallons of purple paint, how much red paint will you add?
B. How much blue paint would you need?
C. Make a ratio table to show the amounts of red and blue paint that can be added to make different amounts of purple paint.
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Answer:
a- 2/5 + 1/4=.65 mixture of red and blue paint
(2/5) / .65 X 1.625=1 gallon of red paint
(1/4) / .65 X 1.625=5/8 gllaons of blue paint, because
1 + 5/8=1 5/8 gallons of purple paint.
b-1/10 + 2/5 + 1/4=.75 mixture of white, red and blue paint
(1/10) / .75 X 3/8= 1/20 gallons of white paint
(2/5) / .75 X 3/8=1/5 gallons of red paint
(1/4) / .75 X 3/8=1/8 gallons of blue paint, because
1/20 + 1/5 + 1/8=3/8 gallons of lighter purple paint.
Step-by-step explanation:
6th grade math i mark as brainliest
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sorry if you mind but why are you posting all questions here . where are you from
Answer:
Option B) 16 × 9
Option D) 2×2×2×2×3×3
...both are the correct answers.
Do this please!!!!!!!
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The position labeled 1 represents the season of summer in the Eastern Hemisphere.
can someone help me fast please
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Answer:
2.5/10 = 0.25 cents per ounce
SinA+cosB=1, A=30 degree. Find B
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Answer:
Step-by-step explanation:
The value of sin 30 = 1/2
Thus cos B = 1-1/2 = 1/2
I hate I ready..... Can I plz have some help...?
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Answer:
the third box
Step-by-step explanation:
Answer: C
Step-by-step explanation:
Reflect X axis is when the X value doesn't change, but the y value turns negative.
Reflect Y axis is when the Y value doesn't change, but the x value turns negative.
Here the point is (-11,-7)
Reflect X is (-11,7)
Reflect Y is (11,7)
Find the equation in standard form if the solutions are x={3,-7}
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Answer:
x = -4
Step-by-step explanation:
x = 3 - 7
x = - (7 - 3)
x = -4
if a 11 inch wheel cost $21.35 what is the cost per square inch
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Answer:
$1.94 per square inch
I need help pls help the girl out pls help me :(
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Answer:
C
Step-by-step explanation:
If you plug the values of x and y into the equation, its C
Question 1
Select Cone in the list of shapes. Vary the angle between the intersecting plane and the vertical axis, and identify the shapes of the cross sections
formed. Try to form as many different cross-sectional shapes as possible. You might find it helpful to start with a horizontal intersecting plane and gradually increase the angle of the plane until it is vertical. Be sure to observe the effect of moving the plane without rotating it.
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Answer:
Circle
Point
Ellipse
Triangle
i need this due at 9 30
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Answer:
First, we are given that line segments AB and ED are congruent and that AE and BD bisect each other. This means that AC and CE are congruent, and they are also congruent to BC and CD. Next, angle ACB and angle DCE are congruent because of the vertical angles theorem. This means that triangle ABC and triangle EDC are congruent by the Side-Angle-Side congruency theorem, and also the Side-Side-Side theorem.
Please mark brainliest. Thanks!!!!
Need answers ASAP!!!!!
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1/2
Why?
There are 2 sets of red cards. Each set has 13 cards, and since you have 2 sets
2*13 is 26. Which means u have half the deck 26/52 equals 1/2.
What is the corresponding side to ab? tu ru st rs
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Answer:
RS
Step-by-step explanation:
RS is the corresponding side to AB
Answer:
RS
Step-by-step explanation:
Hope this helped have an amazing day!
Evaluate the following expression when x = 1/2 and y = -3.
-4xy
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Answer:6
Step-by-step explanation:
-4xy
-4(1/2)(-3)
-4(-1.5)
6
help lol! the explanation is on the bottom!!
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Answer:
1 =80
2 =100
3 =80
4 =100
6 = 100
7 =80
8 =100
Step-by-step explanation: since 5 and 7 are the same, if u slide the bottom up to the top, 1 and 3 would be the same as 5 and 7
2,4,6,and 8 are 180-80 which equals 100
Answer:
1, 3, 5, 7 = 80°
2, 4, 6, 8 = 100°
Step-by-step explanation:
1, 3, 5, and 7 are congruent to each other
2, 4, 6 and 8 are congruent to each other
1 + 2 + 3 + 4 = 360°
80° + x + 80° + x = 360°
160° + 2x = 360°
2x = 360° - 160°
2x/2 = 200°
x = 100°
3[ 2(10-5) +5(6-5) ] =
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The answer is 45 (explained down at the image).
Answer:
45
Step-by-step explanation:
What you wanna do is just simplify the equation as much as possible:
First, the inner parenthesis:
2(10-5)=20-10=10
5(6-5)=30-25=5
And then we have:
3(10+5)=
Just simplify! :)
30+15=45
45
A train travels 2,700 miles in 30 hours and travels the same distance each hour. How many miles does the train travel each hour
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Answer:
90 MPH
Step-by-step explanation:
2700 / 30 = 90
PLEASE HELP ME ASAP!!!!!
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Answer:
67º <33
Step-by-step explanation:
180-46= 134º
134/2= 67º
Answer:
x = 46
Step-by-step explanation:
The two strokes on the triangle show that those two sides are equal. Thus, the angle at the bottom left is equal to x.
x = 46°
que numero multiplicamos que da 729
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Answer:
puedes multiplicar 3 y 243 (you can multiply 3 and 243)
Step-by-step explanation:
espero que esto ayude (hope this helps) :)
hay muchas combinaciones, supongo que se puede elegir sólo una respuesta
1 x 729
3 x 243
9 x 81
27 x 27
81 x 9
Mr. Greene is trying to decide which charter bus
company to use for the 8th grade Outer Banks trip.
Holiday Tours charges a down payment of $300 and $3
per mile. Diamond Tours charges a $500 down payment
and $1 per mile. Write and solve an equation to find the
number of miles when the cost of both companies will be
the same.
Answers
Answer: 100 miles
Step-by-step explanation:
300+3x=500+1x
subtract 1 from both sides
300+2x=500
subtract 300 from both sides
2x=200
divide 2
x=100
Adult giraffe weights are normally distributed, with a mean of 1,800 pounds and a standard deviation of 400 pounds. Approximately what percentage of the adult giraffes weigh more than 2,200 pounds? Choose the best answer.
- 84.13%
- 8.41%
- 1.59%
- 15.87%
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Answer:
15.87%
Step-by-step explanation:
I picked randomly and got it right xD
Answer:
15.87%
Step-by-step explanation:
Just look lol
Factorise 10x²+19x+6
Show working out please.
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Answer:
(2x+3)(5x+2)
Step-by-step explanation:
10x²+19x+6
multiply to get 60
add to get 19
10x²+19x+6
(10x²+15x)(+4x+6)
factorise:
10x²+15x
5x(2x+3)
4x+6
2(2x+3)
(2x+3)(5x+2)
PLEASE HELP!!! WILL GIVE BRAINLIEST!!!
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Answer:
112 degrees
Step-by-step explanation:
The other 2 interior angles are (180-44)/2 which is 68.
180 (straight line) -68 = 112
Figure PQRS is a parallelogram.
Parallelogram P Q R S is shown. Angle Q is (x + 15) degrees and angle R is (6 x minus 10) degrees.
What are the measures of angles P and S?
∠P = 20°; ∠S = 160°
∠P = 40°; ∠S = 140°
∠P = 140°; ∠S = 40°
∠P = 160°; ∠S = 20°
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∠P = 40°; ∠S = 140° answer
Step-by-step explanation:
The measures of angles of the parallelogram are ∠P = 140°; ∠S = 40°
What is a Parallelogram?A parallelogram is a simple quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure
The four types are parallelograms, squares, rectangles, and rhombuses
Properties of Parallelogram
Opposite sides are parallel
Opposite sides are congruent
Opposite angles are congruent.
Same-Side interior angles (consecutive angles) are supplementary
Each diagonal of a parallelogram separates it into two congruent triangles
The diagonals of a parallelogram bisect each other
Given data ,
Let the parallelogram be represented as PQRS
Now , the measures of angles of parallelogram are
The measure of m∠Q = ( x + 15 )°
The measure of m∠P = ( 6x - 10 )°
where ∠Q and ∠R are supplementary to each other
For a parallelogram , same-side interior angles (consecutive angles) are supplementary
On simplifying , we get
m∠Q + m∠P = 180°
( x + 15 ) + ( 6x - 10 ) = 180
7x + 5 = 180
Subtracting 5 on both sides , we get
7x = 175
Divide by 7 on both sides , we get
x = 25
And , the measure of ∠Q = 40° = measure of ∠S
The measure of ∠R = 140° = measure of ∠P
Hence , the measures of angles of parallelogram are solved
To learn more about parallelogram click :
https://brainly.com/question/23488153
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Match the sequence (term) with the correct type of sequence (definition). (4 points)
1. 15, 20, 25, 30, ...
2. 30, 27, 24, 21, ...
a. Arithmetic, common difference is 5 b. Arithmetic, common difference is -3
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20z-8 please helpppp
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Answer: 4(5z−2)
Step-by-step explanation: Brainliest pls