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Sliva [168]
3 years ago
7

Solve for a. 1.) ab + c = d 2.) a = b + c/d 3.) a = b/(c - d) 4.) a = (d - c)/b

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
8 0
1) ab+c=d subtract c on both sides
   ab=d-c divide b on both sides
   a=d/a - c/a or a=(d-c)/d

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What equivalent fractions could you write to add 1/2 and 2/3 ? EXPLAIN.
Anna11 [10]

Answer: 3/6 + 4/6

Step-by-step explanation:

So the key to this is you can only add fractions with the same denominator. As you can see from this question these denominators (2 and 3) are not the same so we need to change that. We can usually find a common denominator between the numbers but to save time the smallest number that both 2 and 3 go into is 6. so 1/2 becomes 3/6 because 1/2=3/6. And 2/3 becomes 4/6 because 4/6=2/3. Since that's true we can add both 3/6 and 4/6. So when adding fractions remember only add NUMERATORS do not add DENOMINATORS. so 3/6 and 4/6 = 7/6 NOT \neq 7/12.

5 0
2 years ago
I need help with 28,29,30 <br> Also can you explain how you got it? Please help me
koban [17]

Answer:area of big square is 9x6 = 54 sq ft. Area of smaller square is 6x4 = 24 square feet. So if you throw a dart, you have a 24/54  or 4/9 chance of hitting the shaded spot.


Step-by-step explanation:


4 0
4 years ago
Write an equation in slope intercept form of the line containing the points (-2,5) and (9,-6)
otez555 [7]
(-2,5)(9,-6)
slope(m) = (-6-5) / (9 - (-2) = -11/11 = -1

y = mx + b
slope(m) = -1
(-2,5)...x = -2 and y = 5
now we sub and solve for b, the y int
5 = -1(-2) + b
5 = 2 + b
5 - 2 = b
3 = b

so ur equation in slope intercept form is : y = -x + 3
4 0
4 years ago
clay costs $5.60 per kilogram. The art teacher needs to buy 4.5 kilograms for the next project. How much will 4.5 kilograms of c
RoseWind [281]
Well first you have to multiply 4*5.60 to get the 4.0 kilograms

4*5.60=22.4

then divide 5.60/2 to get the .5 kilograms more she needs.

5.60/2=2.8

then just add 2.8+22.4 to get the whole 4.5

2.8+22.4=25.2

it cost $25.20 to get the whole 4.5 kilograms of clay. 


5 0
3 years ago
Read 2 more answers
What is the sum of the first five terms of the geometric series 2 − 8 + 32 −
MrMuchimi

Answer:

∑ (n = 1 to 5) (2·(-4)^(n - 1))

S5 = 2·((-4)^5 - 1)/((-4) - 1) = 410


5 0
3 years ago
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