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3 years ago

Solve the following equation for x: 2x + 5y = 8.

Mathematics

1 answer:

Veseljchak [2.6K]3 years ago

3 0

Answer:

$\pmb{x=-\dfrac{5}{2}y+4 }$

Step-by-step explanation:

$2x+5y=8\\\\2x=-5y+8\\\\x=\dfrac{-5y+8}{2}\\\\x=\dfrac{-5}{2}y+4$

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HELP NEEDED PLEASE HELP

vova2212 [387]

Answer:

300

it is given that 12% were rotten

12% = 36

then let total no of apple be X

then , x*12/100 = 36

x= 36*100/12

x = 300

hence total apple were. = 300

hope it helps

6 0

2 years ago

Read 2 more answers

Point N(7, 4) is translated 5 units up.

lutik1710 [3]

It is given in the question that

Point N(7, 4) is translated 5 units up.

And we have to find the coordinates of its image after this transformation.

Since the point translated up by 5 units, so the x coordinate remains same and we have to add 5 to y coordinate.

So the new coordinate after the transformation is

$N'(7+5,4)
\\
N'(12,4)$

And that's the required coordinate after the given transformation .

5 0

3 years ago

PLEASE HELP TIMED. Verify which of the following are identities.

Scrat [10]

A. both the equations are identities , i’m pretty sure

4 0

2 years ago

The new ointment was applied to four locations, and a control was applied to the other four. How many different choices were the

lubasha [3.4K]

Answer:

there are 70 possible choices for the four locations to apply the new ointment

Step-by-step explanation:

Since we have a total of 8 locations ( 4 to the new ointment and 4 to the control) , each one can be chosen and since the order of the locations that are chosen for the new ointment is not relevant , then we know that the number of choices is given by the number of combinations of 4 elements in 8

number of combinations = 8 possible locations to the first ointment * 7 possible locations to the second ( since the first one was already located) * 6 to the third * 5 locations for the fourth / number of times the same combination is repeated ( the same locations but in different positions) = 8*7*6*5 / (4 possible positions for the first ointment* 3 possible positions to the second ointment (since the first one was already located * 2 possible positions of the third * 1 possible position of the fourth)

therefore

number of combinations = 8*7*6*5/(4*3*2*1 ) = 8!/((8-4)!*4!) = 70 possible combinations

thus there are 70 possible choices for the four locations to apply the new ointment

6 0

3 years ago

The volume of a cone is 1540cm³. If its radius is 7cm, calculate the height of the cone. (Take pi = 22/7)

Ann [662]

Answer:

$h=30$

Step-by-step explanation:

Volume of a cone=1540 $cm^{3}$ , Radius=7cm.

The height of a cone=h

When we need to find the height of a cone, we can use the formula of the volume of a cone, which is $\frac{1}{3} \pi r^{2} h$ to find the height of a cone.