Show work please I need help with both questions 3 and 5 thanks
Answers
Answer:
B) {8.71}
Step-by-step explanation:
3. l.c.m=28
28×3/7=28×b-7/4
4×3=7(b-7)
12=7b-49
12+49=7b
61=7b
61/7=7b/7
8.71=b
b=8.71.
Related Questions
X over two is equal to 11
REPOST*Which equation or inequality shows the relationship between the plotted points on the number lineA. 3 < -6B.-6 > -3.C.-6 < -3D.-3 < -6
Ben and his housemates signed a lease for an apartment for 12 months for $563 per month of which Ben agreed to pay $215 per month. Which of the following statements best gives the reasons that Ben’s rent payment is an essential (fixed) expense?a.It cannot be eliminated in a later budget, in order to save money.b.Living expenses have a higher priority than any other type of expense.c.The spender controls the amount of the rent by choice of apartment.d.It is by contract the same amount every month.
PLEASE HELP! GEOMETRY. The circle design is based on twelve equally spaced points placed around the circumference of the circle. As the group lays out the design, the measure of angle GAH is ____ degrees, to the nearest degree.
Answers
The equivalent fraction is 20/100, and the decimal is 0.20 for 20%.
What is the percentage?
The percentage is defined as a ratio expressed as a fraction of 100.
For example, If Misha obtained a score of 57% on her exam, that corresponds to 57 out of 100. It is expressed as 57/100 in fractional form and as 57:100 in ratio form.
We have to determine the equivalent fraction and decimal for 20%
According to the fundamental algebra, the required solution would be as:
20% is expressed as 20/100 in the fractional form:
⇒ (20/100)
Apply the division operation to get 0.20.
20/100 is expressed as 0.20 in decimal form:
⇒ (0.20)
Therefore, the equivalent fraction is 20/100, and the decimal is 0.20 for 20%.
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So, take a fraction that is equivalent to 20% of 100. ( 2/10 works fine) or, 1/5
Then, take 20% and luckily, 20% is a benchmark so .2 (out of 10) works fine.
*a1=80, n=7, r= -1/2
*a1= 3, a8=384, r=2
Please help me with these problems.. :(
Answers
2)
3) we dont know how many numbers has this sequence
How long will it take for 400 deliveries?
A.
8 days
B.
10 days
C.
20 days
D.
40 days
Answers
There is one chance in 5 that the spinner will stop in a red section.
B.
It is 20 times more likely that the spinner will stop in a red section than any other section.
C.
If the spinner is spun 100 times it is certain that it will stop in the red section exactly 20 times.
D.
There is one chance in 20 that the spinner will stop in a red section.
Answers
Hence, there is one chance in five that the spinner will stop in a red section.
Answers
The area of a parallelogram is 18 m².
Given that, a parallelogram has a base of 12 meters and a height of 1.5 meters.
We need to find the area of a parallelogram.
What is the area of a parallelogram?
The area of a parallelogram can be calculated by multiplying its base with the altitude. The base and altitude of a parallelogram are perpendicular to each other as shown in the following figure. The formula to calculate the area of a parallelogram can thus be given as,
Area of parallelogram = b × h square units
Where b is the length of the base and h is the height or altitude.
Now, the area of a parallellogram=12×1.5
=18 m²
Therefore, the area of a parallelogram is 18 m².
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Answer:
18 meters
Step-by-step explanation:
Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week.
Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week.
Each plan utilizes a combination of 3 strength-training sessions and 2 aerobic exercise sessions per week.
Each plan utilizes a combination of 3 strength-training sessions and 3 aerobic exercise sessions per week.
Answers
Let x be the number of aerobic exercises per week.
For the beginner plan:
15y + 20x = 90 ..........(1)
For the advanced plan:
20y + 30x = 130 ........(2)
Multiply both sides of (1) by 3 to get:
45y + 60x = 270 ........(3)
Multiply both sides of (2) by2 to get:
40y + 60x = 260 .......(4)
Subtracting (4) from (3) we get:
5y = 10
y = 2
Plugging in the value of 2 for y in equation and solving, we find x = 3.
Therefore the correct statement is:
"Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week."
Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week.
How to Solve Algebra Word Problems?
Let y be the number of strength-training exercises per week.
Let x be the number of aerobic exercises per week.
For the beginner plan, the equation would be gotten as;
15y + 20x = 90 ------(eq 1)
The equation to represent the advanced plan would be;
20y + 30x = 130 -------(eq 2)
Multiply both sides of eq 1 by 4 to get:
60y + 80x = 360 ------(eq 3)
Multiply both sides of eq 2 by 3 to get:
60y + 90x = 390 ------(eq 4)
Subtract eq(3) from eq(4) we get:
10x = 30
Thus; x = 3
Then; 15y + 20(3) = 90
15y = 30
y = 2
Thus, the correct statement is:
"Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week."
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