Given that,
The equations : 2f-5g=-9 and -7f+3g=4
To find,
The solution of the above equations.
Solution,
We have,
2f-5g=-9 ....(1)
-7f+3g=4 ......(2)
Multiply equation (1) by 7 and equation (2) by 2.
14f-35g=-63 ....(3)
-14f+6g=8 ......(4)
Add equation (3) and (4)
14f-35g -14f+6g = -63 + 8
-29g = -55
g = 55/29
g = 1.89
Put the value of g in equation (1).
2f-5(1.89)=-9
2f = -9+5(1.89)
f = 0.225
Hence, the solution of the above equations are g = 1.89 and f = 0.225.
Answer:
A
Step-by-step explanation:
edg 2021
If x = 7 and y = 4, then x + 2y =
Given that if x = 7 and y = 4, the value of x + 2y = 15
Given the following:
x = 7
y = 4
Required:
Find the value of x + 2y.
Therefore, substitute x = 7 and y = 4 into the algebraic expression, x + 2y.
Thus, plug in the values into the expression:(7) + 2(4) = 7 + 8
x + 2y = 15
Therefore, given that if x = 7 and y = 4, the value of x + 2y = 15
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Which of the following is equivalent to (mn)³?
a. 3mn
b. m³n
c. mn³
d. m³n³
Answer:
Step-by-step explanation:
d is correct
Helppppp!! Pleaseeeee
SOMEONEEEEE PLEASE HELPPPPP
Answer:
D: route 4
Step-by-step explanation:
route 4 is 1 hour and 15 minutes while every other is greater than 1 hour and 15 mins
Answer:
Route 4
it will take 1 hr 15 min
Step-by-step explanation:
If a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will it take the football to hit the ground? Use the equation h =
-161 +62 + 4. Round your answer to the nearest hundredth.
Answer: 100 ft
Step-by-step explanation:
PLZ I NEED ANSWERS. THIS IS MIDDLE SCHOOL LEVEL NOT COLLEGE
Select ALL the expressions that are greater than one
A: 4 Divided by 3/4
B: 1/3 Divided by 10
C: 5/6 Divided by 2/5
D: 3 1/8 Divided by 2 7/8
E: 9/7 divided by 8/7
Answer: The answers are all of the options except for B.
Step-by-step explanation:
Option A. 4/1 x 4/3 is 16/3. 16/3 > 1
Option B. 1/3 x 1/10 is 1/30. 1/30 < 1
Option C. 5/6 x 5/2 is 25/12. 25/12 > 1
Option D. 25/8 x 8/23 is 200/184. 200/184 > 1
Option E. 9/7 x 7/8 is 63/56. 63/56 > 1
Hence, the correct answer is option A, C, D, and E.
2) How can 4(3 + 8) be rewritten using the distributive property?
O 12 + 8
O 3 +32
O 12 +32
O 43 + 48
MATH WORK PLEASE HELP GIVING MANY POINTS ONLY DO THE ONES IN PURPLE!!
Answer:
Step-by-step explanation:
8,3,4,6,7,2,5,
The larger of two numbers is 10 less than twice the smaller number. If the sum of the two
numbers is 38, find the two numbers.
Answer:
Let the larger number = y and the smaller number = x.
The largest number is 10 less than twice the smaller number. Remember that less than means subtract the 10 from the other amount while twice means multiply by two. Therefore,
y = 2x - 10
The sum of the two numbers is 38. Remember sum means add the two numbers to get their result. Therefore,
x + y = 38
Since y = 2x - 10, we rewrite the lower equation as:
x + (2x - 10) = 38
Solving:
3x - 10 = 38
3x = 48
x = 16
The lesser number is 16 and the greater number is 2(16) - 10 or 22.
All radical expressions that are equivalent to 3 2/5
Answer:
15
Step-by-step explanation:
√15 (3√5)^2 3√5^2 3√10
Factor 7x3y4−7x2y5 completely.
A) 7xy(x^2y^3−xy^4)
B) 7x^2y^4(x−y)
C) 7(x^3y^4−x^2y^5)
D) x^2y^4(7x−7y)
Answer:
B
Step-by-step explanation:
when we factor completely, we take a look at what is the biggest common factor of 7x³y⁴ and 7x²y⁵. In this case it is 7x²y⁴.
7x³y⁴-7x²y⁵ = 7x²y⁴(x-y) which is B.
pls help me!! thank you!!
Full working out shown from step 1 to last.
follow it and you get 24 square feet as final answer. Good luck in other questions!!!
Which of the following could be the graph of the equation y= -2x + 5? How do you know??(plz answer!!)
Answer:
The answer is c.
Step-by-step explanation:
This is because the slope is a negative, and since letter a, has a positive slope, it's out of the picture. Just by the looks of b, you can tell that the why intercept isn't 5. It looks like its y-intercept is 0. Letter d, also doesn't have a positive y-intercept so it's also out of the picture. Which leaves letter c. It has a positive slope and it looks like it has 5 as a y-intercept.
Someone please help me
Answer:
y = -x + 9
Step-by-step explanation:
Since the line is going down, you can safely assume that it is a negative slope function. The y-intercept is at (0, 9), so your final slope function should be y = -x + 9.
can u pls help me with this question asap
Answer:
bro this is easy search it up online u dont have to use brainly for these type of questions but the answer is 402.39 but if u want it rounded it is 402.40
Step-by-step explanation:
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78.9 x 510/ 100 = 402.39
402.4 (to the nearest tenth)
please help me 11.3 + 8.97
Answer:
20.27
Step-by-step explanation:
Answer:
20.27
Step-by-step explanation:
Help because this is dificulty to me
Answer:
false false true false ez
which expression is equivalent to 3(7v)
Convert to degrees −31π/36
Answer:
−31π/36 = -15.5°
Step-by-step explanation:
We need to convert −31π/36 to degrees.
The conversion from radian to degrees is calculated as follows :
[tex]\text{Degrees}=\dfrac{180}{\pi }\times \text{radian}\\\\=\dfrac{180}{\pi}\times \dfrac{-31\pi }{360}\\\\=-15.5^{\circ}[/tex]
So, −31π/36 is equal to -15.5 degrees.
In a survey of school students, 64 had taken mathematics course, 94 had taken chemistry course, 58 had taken physics course, 28 had taken mathematics and physics, 26 had taken mathematics and chemistry, 22 had taken chemistry and physics course, and 14 had taken all the three courses. Find how many had taken one course only by using Venn diagram.
Answer:
ask again
Step-by-step explanation:
The number of students taken only one course is 106
What is Venn diagram?A Venn diagram exists as an illustration that utilizes circles to illustrate the relationships among things or finite groups of things. Circles that overlap include a commonality while circles that do not overlap do not share those traits. Venn diagrams permit visually illustrating the similarities and contrasts between two concepts.
Let M =sets of students who had taken mathematics
C= sets of students who had taken chemistry
P= represent sets of students who had taken physics
From the given information, we have
n(M) = 64 , n(C) = 94, n(P) = 58,
n(MnP) = 28, n(MnC) = 26, n(CnP) = 22
n(MnCnP) = 14
No. of students who had taken only Math :
= n(M) - [n(MnP) + n(MnC) - n(MnCnP)]
= 64 - [28+26-14]
= 64 - 40
= 24
No. of students who had taken only Chemistry
= n(C) - [n(MnC) + n(CnP) - n(MnCnP)]
= 94 - [26+22-14]
= 94 - 34
= 60
No. of students who had taken only Physics
= n(P) - [n(MnP) + n(CnP) - n(MnCnP)]
= 58 - [28+22-14]
= 58 - 36
= 22
Total no. of students who had taken only one course
= 24 + 60 + 22
= 106
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Which polynomial is represented by the algebra tiles?
x2 – x – 4 x2 – x + 4 3x2 – 5x + 8 3x2 – 5x – 8
Answer:
x2 – x + 4
Step-by-step explanation:
Just took the test on edg
what happens to an angles measure when the angle is rotated. i will brainlist
Please help me on this questionnnnnn
n + 5 = 4 + 4
n + 5 = 8
n = 3
-- the answer is the third choice.
Kim uses decals to decorate 5 cars and 2 motorbikes. She uses 2/3 of the decals on the cars and 2/5 of the remaining on the motorbikes. She has 6 decals left. How many decals does Kim use on each car?
Answer:
I decal per car and motor bike
Step-by-step explanation:
Please helpppp me pleaseee
(c) There are seven days in a week. How many of them start with the
letter 'T? What fractions of the days start with the letter 'T’?
Step-by-step explanation:
No of days in 1 week = 7
No. of days starting with T letter = 2
Now
Fraction of the days starting with the letter T
= 2 / 7
Hope it will help :)
The ratio of wins to losses for the spartan football team is 3:5. If this trend continues and they play a total of 16 games, how many can they expect to win?
Answer:
10 games
Step-by-step explanation:
The team can expect to win 6 matches.
What is ratio?A ratio is a way to show a relationship or compare two numbers of the same kind. We use ratios to compare things of the same type.
Given that, The ratio of wins to losses for the spartan football team is 3:5. and this trend continues, they play a total of 16 games,
Let they won 3k games and loose 5k games.
Then,
3k+5k = 16
8k = 16
k = 2
Therefore, they lose 5·2 = 10 matches and won 3·2 = 6 matches.
Hence, the team can expect to win 6 matches.
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The difference between 16.03 and 7.385 is …….
A car uses a litre of petrol to travel 4km. How many litres will it use to travel 32 kilometres.
Given that,
A car uses a litre of petrol to travel 4 km.
To find,
How many litres will it use to travel 32 kilometres.
Solution,
We have,
1 litre = 4 km
or
1 km = (1/4) litre
Let it will use x litres to travel 32 km.
32 km = (32/4) litres
= 8 litres
Hence, 8 litres it will use to travel 32 km.
The Blue Streak Taxi Company charges each customer $3.00 plus $0.22 a mile, Which equation could be used to find the number of miles m the cab traveled if the fare was $8.75?
Answer:
3.00+0.22m=8.75
Step-by-step explanation: