Answers
№7
[tex]4(5y - 2) = 52\\4*5*y - 4 * 2 = 52\\20y - 8 = 52\\20 y = 52 + 8\\20y = 60\\y = 60 : 20\\y = 3[/tex]
№11
[tex]2x + 17 = 5x - 4\\17 + 4 = 5x - 2x\\21 = 3x\\x = 21 : 3\\x = 7[/tex]
№12
[tex]2x + 7 = 16 - 4x\\2x + 4x = 16 - 7\\6x = 9\\x = 9 : 6\\x = \frac{3}{2}\\x = 1,5[/tex]
№14
[tex]4(2y + 1) = 2 (12 - y)\\4*2*y + 4 * 1 = 2 * 12 - 2 * y\\8y + 4 = 24 - 2y\\8y + 2y = 24 - 4\\10y = 20\\y = 20 : 10\\y = 2[/tex]
№15
[tex]7 - 3x = 2(x + 1)\\7 - 3x = 2x + 2\\7 - 2 = 2x + 3x\\5 = 5x\\x = 5 : 5\\x = 1[/tex]
№16
[tex]\frac{x-3}{2} = 5\\x-3 = 5*2\\x - 3 = 10\\x = 10 + 3\\x = 13[/tex]
Related Questions
In order to help students improve their reading, a school district decides to implement a reading program. It is to be administered to the bottom 5% of the students in the district, based on the scores on a reading achievement exam. If the average score for the students in the district is 122.6, find the cutoff score that will make a student eligible for the program. The standard deviation is 18. Assume the variable is normally distributed. Round to two decimal places.
Answers
Answer:
92.99
Step-by-step explanation:
Mean, μ = 122.6
Standard deviation, σ = 18
Recall :
Z = (x - μ) / σ
x = score
The Zscore for the lower 5% = 0.05
Using, invnorm(0.05) = - 1.645
Put Z = - 1.645
-1.645 = (x - 122.6) / 18
-1.645 * 18 = x - 122.6
-29.61 = x - 122.6
-29.61 + 122.6 = x
x = 92.99
Which of the following is equivalent to 3x - 4y = 6?
y=7
1 x
v==
y
V = 3*+2
v
y= *-2
Answers
Answer:
the answer is option D
y =(3/4)x - (3/2)
Please help me it’s urgent!
Answers
2.c
When u plug in what the x variable is in each equation, you figure out what y equals to.
1.y=(2)^3 +1 so y=8+1 so y=9
2.y=(-2)^3 +1 so y=-8+1 so y=-7
Explanation
I got it right on the test
William bought 114 juice boxes for his party. At the end of the party, he had 23 juice boxes left over. How many juice boxes did people drink at William's party? *
Answers
Answer:
Number of juice boxes people drank at Williams party = 91
Step-by-step explanation:
Total juice boxes Williams bought = 114
Juice boxes left over at the party = 23
How many juice boxes did people drink at William's party?
Number of juice boxes people drank at Williams party = Total juice boxes Williams bought - Juice boxes left over at the party
= 114 - 23
= 91
Number of juice boxes people drank at Williams party = 91
Width = 1 ft; height = 20 ft ; length = 5ft
Does anyone know the volume
Need now!
Answers
Answer:
100 cm 3
Step-by-step explanation:
20 x 1 = 20
20 x 5 = 100 cm 3
100 cm 3 is the volume
Amari claims that a rectangle is sometimes a parallelogram but a parallelogram is always a
rectangle. Is she correct? Explain if you agree or disagree with her and why.
Answers
Answer:
The statement is false.
Step-by-step explanation:
A parallelogram is a figure of four sides, such that opposite sides are parallel
A rectangle is a four-sided figure such that all internal angles are 90°
Here, the statement is:
"A rectangle is sometimes a parallelogram but a parallelogram is always a
rectangle."
Here if we found a parallelogram that is not a rectangle, then that is enough to prove that the statement is false.
The counterexample is a rhombus, which is a parallelogram that has two internal angles smaller than 90° and two internal angles larger than 90°, then this parallelogram is not a rectangle, then the statement is false.
The correct statement would be:
"A parallelogram is sometimes a rectangle, but a rectangle is always a parallelogram"
0.4567304 x 2.5678093 = ?
Answers
Answer:
1.17279656871
Step-by-step explanation:
Answer:
1.72796569
Step-by-step explanation:
0.4567304 x 2.5678093 = 1.72796569
The ___ states that the order in which two numbers are multiplied won’t effect the answer.
A. Commutative property of addition
B. Commutative property of multiplication
C. Associative property of addition
D. Associative property of multiplication
E. Distributive property
Answers
Answer: Commutative property of multiplication
Step-by-step explanation:
The commutative property is a math rule that says that the order in which we multiply numbers does not change the product. - Khan Academy
May you give me the answer to this please ?
Answers
Answer:
using pythagoras theorem
H^2=P^2+B^2
here h=MN ,opposite(P) be 15 and adjacent(B) be 16
(MN)2=15^2+16^2
(MN)^2=225+256
MN=[tex]\sqrt{481}[/tex]
MN=21.93
after rounding off MN=21.9
Step-by-step explanation:
What is the area of this composite figure?
4 cm
7.5 cm
15.5 cm
18 cm
135 cm?
O 207 cm?
249 cm?
O 279 cm?
Answers
Answer:
249cm or the third option
Step-by-step explanation:
I got it right on the test. Good luck to you!
Hey guys, hope your day is going well, can you plz help me with is question thank you, i will give 10 pts.
Answers
theres not picture so like i cant help u with that
The coefficient of x in the expansion of
(x+3)(x-1) is
Answers
x^2 + 4x - 3
Therefore the coefficient of x in expansion is 4.
Abigail is 8 years older than Cynthia. Twenty years ago Abigail was three times as old as Cynthia
was. How old is each of them now?
Plz explain
Answers
Find the length of the third side. If necessary, round to the nearest tenth. 5 and 9
Answers
Answer:
is it a right triangle?
Step-by-step explanation:
Answer:
1. Is it a right triangle?
2. Are you looking for the hypotenuse?
Step-by-step explanation:
Please help, no links.
Answers
Answer:
pyothorahas rule is show
help please‼️ ASAP.......
Answers
Answer:
Step 1
Step-by-step explanation:
They're all wrong expansions but step 1 was where he made his first error... He shifted the bracket putting 3x inside the bracket... While the other steps the first expansion of 3x eliminating the bracket was correct.
The correct expansion is meant to be 3x + 21 + 5 = 3x + 26
I need answer immediately!!!!!
Answers
Answer:
4 PM
Step-by-step explanation:
At 4 PM the temperature reached 68 degrees Fahrenheit??
Answer:
[tex]4\:\text{PM}[/tex]
Step-by-step explanation:
The first point where [tex]y=68[/tex] occurs at [tex]x=4[/tex], hence [tex]\boxed{4\:\text{PM}}[/tex]
Hellpppppppppp pleaseee
Answers
give me brainliest plsss
WILL MARK BRAINLIEST
A certain restaurant sells cups of coffee for $2 and donuts for $1.50. If the restaurant sold a total of 80 items and earned $141.50, how many donuts did the restaurant sell?
Answers
Answer: 37 donuts
Step-by-step explanation:
coffee for 2,
donuts for 1.5
c = coffee
d = donuts
lets make an equation
c*2 + (80-c)*1.5 = 141.5
from this we get:
c= 43.
if c = 43, then d is 80-43 = 37.
they sold 43 coffees, and 37 donuts.
lets check the math
43*2+37*1.5 = 141.5. math checks out
mark me brainlist
BRAINLIEST HELP.............
Answers
I think the answer should be b, since y=3 when x=0, according to the option B.
y = x + 3, B
Solve Andre’s inequality 3x+10≤31
h ≥ 7
h ≤ 7
h < 7
Answers
Answer:
It is h ≤ 7
Step-by-step explanation:
I NEED HELP IMMEDIATELY!!!! PLS HELPP. PLS DO NOT GUESS EITHER BUT PLS CMON AND HELP ME PLSSS
Answers
Answer:
(1.5, 2.5)
Step-by-step explanation:
Will mark brainliest
Answers
Answer:
I think the answer should be Mat A cause it has more space.
Someone help me please
Answers
Answer: I think 10
Step-by-step explanation: cuz area is length x height and basically you just do square root of 100 Bc thags a square so the sides should be equal
HOLA, I'm being timed :)
Find the value of c that makes x2 + 10x + c a perfect square trinomial
a. –25
b. 10
c. –5
d. 25
thank you <3
Answers
A polynomial function has a degree of 8. What is the maximum number of turning points?
Answers
Answer:
7
Step-by-step explanation:
To find the maximum number of turning points of any polynomial function, subtract one from the degree.
Since the degree is 8, subtract 1 from this:
8 - 1
= 7
So, the maximum number of turning points is 7.
i need the answer now please
Answers
Answer:
180/147
Step-by-step explanation:
We need to find the additive inverse of the given numbers.
For finding it we may simply out -1 as multiplication in front of the terms .SOLUTION 1 :-
→ 3/-7 - 11/21
→ -3/7 -11/21
→ 3×-3 - 11 /21
→ -9-11/21
→ -20/21
SOLUTION 2 :-
→ 9/5 ÷ 7/5
→ 9/5 × 5/7
→ 9/7
→ Product of nos . = -20/21 × -9/7
→ Ans = 180/147
Write 1 2/11 as a decimal
Answers
Answer: 1.18. 18 is repeated.
Explanation is below.
What is the average rate of change of the annual population between 1930 and 1950?
Answers
Answer:
the average rate of change is 5000
What is the volume of this rectangular prism?
2
cm
2
cm
5
cm
5
Answers
Answer:
The volume is 8
Step-by-step explanation:
Volume=abc
V=(2/5)(2/5)(2/5)
V=8