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3 years ago

There are 88 Keyes on a piano.some keys are black and some keys are white .

Mathematics

2 answers:

skad [1K]3 years ago

6 0

88 - x

x less than 88 is the # of black keys

shepuryov [24]3 years ago

5 0

It would be C.88-x and there are 36 black keys on an 88 key piano

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Please answer. I will mark Brainliest

den301095 [7]

Statement: 1) Triangle ABC
2) 2x 3)x=52

Reason: I’m not sure but probably addition

4 0

3 years ago

Combine Like Terms:<br><br> 3(p+5) - 8 + 11p

kykrilka [37]

Answer:

14p+7

Step-by-step explanation:

Distribute

3p+15-8+11p

6 0

3 years ago

Read 2 more answers

Carl bought 19 apples of 2 different varieties to make a pie.The total cost of the apple was $5.10.Granny Smith apples cost $0.2

disa [49]

For this case we propose a system of equations:

x: Let the variable representing the quantity of Granny Smith apples

y: Let the variable representing the number of Gala apples

According to the statement we have:

$x + y = 19\\0.25x + 0.30y = 5.10$

From the first equation we have to:

$x = 19-y$

replacing in the second equation:

$0.25 (19-y) + 0.30y = 5.10\\4.75-0.25y + 0.30y = 5.10\\4.75 + 0.05y = 5.10\\0.05y = 5.10-4.75\\0.05y = 0.35\\y = \frac {0.35} {0.05}\\y = 7$

So, Carl bought 7 Gala apples

On the other hand:

$x = 19-7 = 12$

So, Carl bought 12 Granny Smith apples

Answer:

Carl bought 7 Gala apples and 12 Granny Smith apples

8 0

3 years ago

Which of the following (-1,8) and (5,-2) are the distance of the line segment

olganol [36]

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have the points (-1, 8) and (5, -2). Substitute:

$d=\sqrt{(5-(-1))^2+(-2-8)^2}=\sqrt{6^2+(-10)^2}=\sqrt{36+100}=\sqrt{136}\\\\=\sqrt{4\cdot34}=\sqrt4\cdot\sqrt{34}=\boxed{2\sqrt{34}}$

8 0

3 years ago

One question please help! Thanks guys in advance!!!

Ede4ka [16]

Y = kx
80 = 16k
k = 80/16 = 5

direct variation

The first 2 choices are corect

5 0

3 years ago