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3 years ago

Can someone help me out? (serious answers only)

Mathematics

2 answers:

maxonik [38]3 years ago

6 0

Answer:

Step-by-step explanation:

Good Luck

Marina86 [1]3 years ago

5 0

The answer is D -60.

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Which of the following expressions would give the number of ways to choose a group of 7 from a group of 15?

OLga [1]

Answer:

Step-by-step explanation:

The number of ways to choose a combination of 7 objects from a group of 15 objects is 15! / (7! 8!)

5 0

2 years ago

Oliver earns five dollars for each lawn he mowed.If he he’d six lawns to move but forgot to mow three of them how much money did

snow_lady [41]

$15

Explanation:

For each lawn he mows = $5

<u>He should mow 6 lawns but did only 3 lawns as other 3 he forgot to mow.</u>

earned:

mows lawn-d * $5

3 * $5

3 0

3 years ago

What is the rule for a line that has a slope of 2 and passes through ( 10,17 )

ella [17]

Answer:

Therefore the equation of the line has a slope 2 and passes through ( 10 , 17 ) is

2x - y = 3

Step-by-step explanation:

Given:

Slope = 2 = m ( say )

Let,

point A( x₁ , y₁) ≡ ( 10 , 17 )

To Find:

Equation of Line AB =?

Solution:

Equation of a line passing through a points A( x₁ , y₁) and having slope m is given by the formula,

$(y - y_{1} )=m\times(x-x_{1}) \\$

Substituting the given values in a above equation we get

$(y-17)=2\times (x-10)\\ \\(y-17)=2(x-10)\\\\y-17=2x-20\\2x-y=3\\2x-y=3...............\textrm{which is the required equation of the line AB}$

Therefore the equation of the line has a slope 2 and passes through ( 10 , 17 ) is

2x - y = 3

3 0

3 years ago

If 15% of 4x is 20 less than x, what is the value of x?

Bess [88]

The sentence "15% of 4x is 20 less than x"

translates to 0.15 • (4x) = x – 20

Solving that…

0.15(4x) = x - 20 multiplipy 0.15•4

0.6x = x - 20 subtract x from both sides

-0.4x = - 20 divide both sides by -0.4

x = 50

4 0

3 years ago

Assume a mats price from the start is "X" USD. Write an expression for what the mat would cost after being reduced by P % (unkno

natka813 [3]

Answer:

Step-by-step explanation:

$cost \ price = X\\Deduction = P \%\\Deduction \ Price = P \% of X = \frac{P}{100} \times X = \frac{XP}{100} \\\\Cost \ price \ after \ deduction = X -\frac{XP}{100}$

OR SIMPLIFY FURTHER

$X - \frac{XP}{100} = X( 1 - \frac{P}{100} )$

7 0

3 years ago