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alexgriva [62]
3 years ago
11

Solve 2a − 5d = 30 for d

Mathematics
2 answers:
vekshin13 years ago
7 0
2a₋5d=30

⇒2a-30 = 5d

⇒d = (2a-30)÷5
valina [46]3 years ago
6 0
2a - 5d = 30\\
5d=2a-30\\
d=\dfrac{2a-30}{5}
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A painting crew reported that a job is 3/5 completed. What fraction of the job remains to be done? ​
Debora [2.8K]

Answer:

2/5

Step-by-step explanation:

7 0
2 years ago
The $1 coin depicts Sacagawea and her infant son. The diameter of the coin is 26.5 mm, and the thickness is 2.00 mm. Find the vo
Contact [7]

Answer

Find the volume of the coin is cubic millimeters.

To prove

Formula

Volume\ of\ cylinder\ = \pi r^{2} h

Where r is the radius and h is the height .

As given

The $1 coin depicts Sacagawea and her infant son.

The diameter of the coin is 26.5 mm, and the thickness is 2.00 mm.

Radius = \frac{Diameter}{2}

Radius = \frac{26.5}{2}

Radius = 13.25 mm

\pi = 3.14

Put in the formula

Volume  of  coin  = 3.14 × 13.25 × 13.25 × 2.00

                            = 1102.53 mm³ (approx)

Therefore the volume of the coin is 1102.53 mm³ .

7 0
3 years ago
What degree are all of these angles?<br><br>AGD<br>EGA<br>BGC<br>BGF
Stolb23 [73]

Answer:

AGD: 90

EGA: 50-59

BGC: 90

BGF: 50-59

Step-by-step explanation:

pretty easy

6 0
2 years ago
Read 2 more answers
The surface area of a cube is 400 millimeters what is the surface area of a similar cube that is larger by a scale factor of 3
yuradex [85]
Larger by 3 means that the legnths of the sides are larger by 3 times
so we have a cube that has area of 400
surface area=legnth times width times 6 since it is a cube and legnth=width
so
SA=w^2 times 6

6w^2=400
divide by 6
w^2=200/3
square root both sides
w=√(200/3)
so w is 3 times larger
(3w)^2 times 6 is new area

w=√(200/3)
(3√(200/3))^2 times 6=9(200/3) times 6=600 times 6=3600

answer is 3600 ml^2
3 0
3 years ago
What would you do to solve the equation below?
solmaris [256]

Answer:

add 3 to both sides of the equal sign

Step-by-step explanation:

to solve the equation you would have to add three

that is because you have to do inverse operations

and you would add because the opposite of subtracting is adding

so solving it would look like this

x - 3 = 12

  +3   +3

x = 15

this is how you check the answer:

15 - 3 = 12

    +3   +3

6 0
3 years ago
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