Solve the simultaneous equations:
4x+3y=44
3x+3y=39
x=
and y=
Answer:
X = 5 and Y = 8
Step-by-step explanation:
4x + 3y = 44
3x + 3y = 39
- - -
__________
x = 44 - 39
x = 5........eq 1
Now putting the values in any equation
4 ( 5 ) + 3 y = 44
20 + 3 y = 44
[tex]4(5) + 3y = 44[/tex]
[tex]20 + 3y = 44[/tex]
[tex]3y = 44 - 20[/tex]
[tex]3y = 24[/tex]
[tex]y = \frac{24}{3} [/tex]
[tex]y = 8[/tex]
Please Help, Thank You!
a. Find the given terms :
- 5e + 9 + 4e ( Find the 3rd term )
- 6g + 2a + 3 + b + 4a ( 6th term )
- 2 ( 3a x 4 ) + 4x = 3^2 ( 5th term )
b. Factorise completely :
3x² + 9
c. Solve the following inequality :
2x + 3 > 17
-Please, please help me asap! ♡´･ᴗ･`♡
Answer:
e=9
sorry thats all i know:(
Step-by-step explanation:
Answer: b.) 3x^2+9 factorized= 3(x^2 +3)
c) solving inequality: subtract 3 on both sides, take that answer and divide by 2 on both sides. answer is x>7
Step-by-step explanation:
find the compound ratio of 6:5cm and 2:5
Answer:
12:25
Step-by-step explanation:
6/5×2/5
=12/25
12:25
please help me out. precalc math. will report if answer is n/a
a is the correct answer I Hope it help
What value of x makes the equation true?
3(4x-5)-4x+1=-6
Please show work
Answer:
x = 1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define Equation
3(4x - 5) - 4x + 1 = -6
Step 2: Solve for x
Distribute 3: 12x - 15 - 4x + 1 = -6Combine like terms: 8x - 14 = -6Isolate x term: 8x = 8Isolate x: x = 1Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: 3(4(1) - 5) - 4(1) + 1 = -6Multiply: 3(4 - 5) - 4 + 1 = -6Subtract: 3(-1) - 4 + 1 = -6Multiply: -3 - 4 + 1 = -6Subtract: -7 + 1 = -6Add: -6 = -6Here we see that -6 does indeed equal -6.
∴ x = 1 is the solution to the equation.
find the 66th term in the arithmetic sequence -92,-85,-78,-71,...
Find the nth term of this quadratic sequence 3 8 15 24
Answer:
35
Step-by-step explanation:
A quadratic sequence is a form. of mathematical progression of numbers in which the subsequent differences between each consecutive term differ by the exact amount. This is known as the common second difference.
Hence in this case,
we have
S= 3+8+15+24+…..+Tn - 1.
S=. 3+8+15+……………..Tn-1 + Tn
Deducting 2nd series from the first
We have 0=3+5+7+…….Tn
Hence, we have Tn= n (n+2)
= 24 (9+2)
= 24 + 11
= 35
BRAINLEST ANSWER + POINTS
These triangles are
congruent by the
triangle congruence
postulate [ ? ].
Please be right
Answer:
They are not Congruent = A
Step-by-step explanation:
Its not congruent because the left one is slightly a little bit bigger than the right. If you look close enough you can see that. Plus if you add the lines together the right one is slightly tilted.
What is the solution of the equation (4x + 3)2 = 18?
O x = 3 and x = -3
O x = -3 and x = 3
=
2
O x= -3+372 apd x = -3-3,2
4
4
x= 3+372 and x = -3 +372
4
Answer:
Step-by-step explanation:
2(4x+3)=18
8x+6=18
-6 -6
8x = 18
÷8 ÷8
x = 2.25
ive tried multiple ways and they are all different to the provided answers
The temperature in a greenhouse should be 66 degrees or higher. One morning, the heater stopped working. The temperature dropped 2 degrees before someone fixed the heater. The temperature was still at least 66 degrees when the heater started working again. How can you best describe the temperature in the greenhouse before the heater stopped working?
The temperature in the greenhouse was at least (answer) degrees before the heater stopped working.
Please answer ASAP!
Answer:
The temperature in the greenhouse was at least 68 degrees before the heater stopped working.
Step-by-step explanation:
It was at 68 then it dropped by 2 degrees.
Simply the expression (5x+9y) - (11x-3y+7)
Answer:
-6+12y-7
Step-by-step explanation:
Who doesn't like short answers, instead of writing a hole paragraph.
Answer:
[tex]-6x + 12y - 7[/tex]
Step-by-step explanation:
[tex](5x + 9y) - (11x - 3y + 7)[/tex]
Lets open the brackets.
[tex]=> 5x + 9y - 11x + 3y - 7[/tex]
Now lets add/substract the like terms only.
[tex]=> 5x - 11x + 9y + 3y - 7[/tex]
[tex]=> -6x + 12y - 7[/tex]
15/40 = x/13,095
solve for x then round to the nearest amount of whole hours.
PLEASE ANSWER ASAP!
Answer:
Step-by-step explanation:
You can cross multiply (15 x 13095) = 40x
196425 = 40x
divide by 40
x = 4,910.625
x = 4,911
Find the sum of the first 40 terms of a geometric sequence where the first term is 16 and the common ratio is 1.1. 704 7,081.48089 7,805.62898 6,423.16445
Step-by-step explanation:
The nth term of a geometric progression can be determined by using the formula:
Tn=arn−1
where: a = first term and r = common ratio
Substitute the given values of first term and common ratio into the formula:
Tn=arn−1
T5=(40)(0.5)5−1
T5=(40)(0.5)4
T5=(40)(0.0625)
T5=2.5
Kelsey can buy 2 pounds of apples for 7 dollars
Answer:
each pound cost 3.5 dollars
Step-by-step explanation:
7/2
Answer: each pound is 3.50 dollars
Step-by-step explanation: 7.00 divided by 2 is 3.50 dollars
What type of number is 3,?
Choose all answers that apply:
A) Whole number
B) Integer
(c) Rational
Do 7 proble
it is all A. whole number B. integer and C rational.
How many solutions does the quadratic system shown below have ?
The price of a necklace was increased by 10% to £154.
What was the price before the increase?
Answer:
answer in attached picture
Answer:
£169.4
Step-by-step explanation:
£154.00 + 10% = 169.4
Brainliest Please??!!??
- ElizabethKate
Yo can somebody help me ?
Answer:
x=60
Step-by-step explanation
all the sides are equal and they all add up to 180.
so 180 divided by 3= 60
thus your answer is 60
Explain please I’ll give brainliest to the best response!!:)
Answer:
Because 4/1 is 4 and 12/3 is 4
Step-by-step explanation:
Answer:
4:1 is equal to 12:3
Step-by-step explanation:
if you divide 12:3 both numbers by 3 it equals 4:1
just picture the smaller squares for the 12:3 with three lines in them
sorry im not that good at exlaining stuff
Evaluate the expression when m=−6.
m−(−8)=
Based on the 2017 season, the Houston Astros have a winning percentage of 623. Use the binomial
model to find the probability that the Astros will win 4 of their next 6 games
P (*) = [ 21/07-)]p*q-
A 12.4%
O
B 24.7%
0 C 32.1%
OD 62.3%
Answer:
c
Step-by-step explanation:
becouse if you put in the numbers .623 for p and .377 for q and 6 for n and for x you put 4 do the math and you get c
Will the following lengths make a triangle? yes/no? (Will give brainy)
Answer:
1. Yes
2. No
3. Yes
4. No
5. Yes
Step-by-step explanation:
1. Yes
2. No
3. Yes
4. No
5. Yes
In order to be sure whether given lengths form a triangle or not, we should know the following property.
If sum of any two lengths is larger than the third length then it will form a triangle otherwise not.
-3√123 = -2√123 x _____ Fill in the blanks
Answer:
a = 1.5
Step-by-step explanation:
Given:
-3√123 = -2√123 x ------
Assume;
Blank = a
Computation:
a = -3√123 / -2√123
a = 3 / 2
a = 1.5
You want to find the sum of -3x2 + 7x-4 and -2 + 5x - x3. Which addition shows like
terms lined up correctly?
Answer: 0x³ - 3x² + 7x - 4
+
-x³ + 0x² + 5x - 2
Step-by-step explanation:
Combine Like Terms
22+15x=34-17x
Step-by-step explanation:
22+15x=34-17x
So now, the 34 will join the 22 and the 15x will join the -17x
22-34=-17x-15x
-12=-2x
So now, we divide both sides by -2x
and the negative will cancel negative so
x=6
*will give brainist*
just make sure the answer is correct!!
PLZ HELP i will brainliest if u answer the 3 question correct
Step-by-step explanation:
1. The formula is 18x3 since there is 3 equal area sides. The volume is 54 (probably)
2. The formula for the pyramid is 3x3x2/3. Which the volume is 6.
3. Same thing the volume is 60 and what i did to get that is 20x3
Hope this helps!
Answer:
Given : A=(1,2)≡(x
1 ,y
1
) and B=(3,−2)≡(x
2
,y
2
)
Let M=(x,y) be the midpoint of AB
x=(
2
x
1
+x
2
) and y=(
2
y
1
+y
2
)
Then, x=
2
1+3
and y=
2
2−2
⟹x=2 and y=0
∴M=(2,0)
∴ Coordinates of the midpoint of AB is (2,0)
Step-by-step explanation:
Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.
UThe amount of change drent for the percent increase and the percent decrease
UThe ratio of the percent increase is not the same as the percent decrease.
OThe ratio for the percent increase has a smaller denominator than the percent decrease.
U The ratio for the percent increase has a different numerator than the percent decrease.
O The original amount for the percent increase is different from the original amount for the percent decrease.
Answer:
work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100. If your answer is a negative number, then this is a percentage decrease.
Step-by-step explanation:
Which of the following situations are equal to 4? Select all that apply.
A) 50% of 8
B) 80% of 5
C) 60% of 5
D) 20% of 20
E) 25% of 16
Answer:
A, B, D, and E
Step-by-step explanation:
honestly, if you just look it up 50% of 8 it will calculate it for you. You can do this with each question until you find the answer. When you look up each answer A, B, D, and E all were 4 soo hope this helps :)
(5,6) and (−5,12) what is the rate of change??
Answer:
- 0.6
Step-by-step explanation:
Start point: (5,6)
End point: (-5,12)
rate of change = (12-6) / (-5-5) = 6/-10 = - 3/5 = - 0.6
Answer:
The rate of change is -0.6
Step-by-step explanation:
Given
[tex](x_1,y_1) = (5,6)[/tex]
[tex](x_2,y_2) = (-5,12)[/tex]
Required
Determine the rate of change
The rate of change means the slope (m) and it is calculated as thus:
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{12-6}{-5-5}[/tex]
[tex]m = \frac{6}{-10}[/tex]
[tex]m = -\frac{6}{10}[/tex]
Simplify the fraction
[tex]m = -\frac{3}{5}[/tex]
[tex]m=-0.6[/tex]
The rate of change is -0.6