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andrey2020 [161]
3 years ago
14

Plz help me I have no I dea what I am doing write know plz help!!!!

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0
I think is the last option
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1. Solve the following equation. -5p = -75
aliya0001 [1]

Answer:

15

Step-by-step explanation:

-5 x 15 = -75

This is according to the rule -a ÷ a = -a and -a x a = -a. Where a negative divided/multiplied by a positive number equals a negative number.

-75 ÷ -5 = 15

-75 ÷ 15 = -5

6 0
3 years ago
In the file below. (Sorry, question has pictures can't write it out.)
UNO [17]
As what I can observe, the pathway can be formed with 2 right triangles. Thus, I'll get the area of the 2 right triangles and multiply its area by the paving cost per square meter.

Area of Right Triangle: ab / 2
a = 6 2/3 m ⇒ 20/3 m; b = 3m

Area of 1 triangle= (20/3 m * 3 m) ÷ 2 = 20 ÷ 2 = 10 m²   

Area of 2 triangles = 10m² * 2 = 20 m²

Total cost = $40 * 20m² = $800 
5 0
3 years ago
In 2009, two tickets to a Certain American band's concert and two tickets to a certain British band's concert cost, on average,
dlinn [17]
The answer to the problem is 278
3 0
3 years ago
Consider the following.3x + 3y = 8(a) Find y' by implicit differentiation.(b) Solve the equation explicitly for y and differenti
ludmilkaskok [199]

Answer:

a.y'=-1

b.y'=-1

c.Yes

Step-by-step explanation:

We are given that consider a function

3x+3y=8

Implicit function: That function is a relation in which dependent variable can not be expressed in terms of independent variable

Explicit function: It is that function in which dependent variable can be expressed in terms of independent variable.

a.3x+3y=8

Differentiate w.r.t x then we get

3+3\frac{dy}{dx}=0

3\frac{dy}{dx}=-3

\frac{dy}[dx}=\frac{-3}{3}=-1

\frac{dy}{dx}=y'=-1

b.3x+3y=8

3y=8-3x

y=\frac{8-3x}{3}

Differentiate w.r.t x then we get

\frac{dy}{dx}=\frac{-3}{3}=-1

\frac{dy}{dx}=y'=-1

When we substituting the value of y obtained from part b into a solution of part a then we get

y'=-1

Hence, solutions are consistent.

8 0
3 years ago
Find the value of two numbers if their sum is 23 and their difference is 3.
Yakvenalex [24]

x+y=23

x-y=5

First, add the equations.

2x=28

x=14

Then...

14+y=23

y=9

Therefore the answer is...

x=14  y=9

3 0
4 years ago
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