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3 years ago

Select the correct answer.

Mathematics

1 answer:

Mariulka [41]3 years ago

5 0

The answer would be B

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An athlete trains for 95 min each day for as many days as possible.Write an equation that relates the number of days d that the

mrs_skeptik [129]

855=95d

855 minutes is equal to 95 minutes times the number of days run

6 0

3 years ago

10. The number of people, N, employed in a chain of cafes is related to the number of cafes, n, by the equation:

il63 [147K]

Answer:

i. N= 10n+120

= 10*14+120

= 260

ii. N = 10n+120

<=> 190=10n+120

<=> n=7

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Line segment NY has endpoints N(-11, 5) and Y(3,-3).

777dan777 [17]

Given:

Line segment NY has endpoints N(-11, 5) and Y(3,-3).

To find:

The equation of the perpendicular bisector of NY.

Solution:

Midpoint point of NY is

$Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)$

$Midpoint=\left(\dfrac{-11+3}{2},\dfrac{5-3}{2}\right)$

$Midpoint=\left(\dfrac{-8}{2},\dfrac{2}{2}\right)$

$Midpoint=\left(-4,1\right)$

Slope of lines NY is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m=\dfrac{-3-5}{3-(-11)}$

$m=\dfrac{-8}{14}$

$m=\dfrac{-4}{7}$

Product of slopes of two perpendicular lines is -1. So,

$m_1\times \dfrac{-4}{7}=-1$

$m_1=\dfrac{7}{4}$

The perpendicular bisector of NY passes through (-4,1) with slope $\dfrac{7}{4}$ . So, the equation of perpendicular bisector of NY is

$y-y_1=m_1(x-x_1)$

$y-1=\dfrac{7}{4}(x-(-4))$

$y-1=\dfrac{7}{4}(x+4)$

$y-1=\dfrac{7}{4}x+7$

Add 1 on both sides.

$y=\dfrac{7}{4}x+8$

Therefore, the equation of perpendicular bisector of NY is $y=\dfrac{7}{4}x+8$ .

6 0

2 years ago

Use the distributive law and then simplify: (3x -2) (x +1)

jenyasd209 [6]

(3x-2)(x+1)
3x*x+3x-2x-2
3x^2+3x-2x-2
3x*2+x-2
I think this is the answer

6 0

2 years ago

Read 2 more answers

A washing machine sells for $201 after being discounted by 40 percent. What was the original price of the washing machine?

olga_2 [115]

Step-by-step explanation:

Let original price be x

Price after 40% discount is $201

Therefore

x × 40% = $201

x = 201 ÷ (40/100)

x = 502.5

Therefore, the original price is $502.5

Hope it helps :)

5 0

3 years ago