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3 years ago

What is the solution to the equation + 5= 8?

Mathematics

2 answers:

evablogger [386]3 years ago

8 0

Answer: 3 + 5 = 8

Step-by-step explanation: if you subtract 5 from 8 (8-5=3) you get 3 so that is your answer

egoroff_w [7]3 years ago

7 0

Answer:

x=13x=13

Step-by-step explanation:

x−5=8

Add 55 to both sides.

x=8+5x=8+5

Simplify 8+58+5 to 1313.

x=13x=13

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Drag steps and expressions into place to explain and show how to evaluate x⋅y for x=3 and y=9.

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3 years ago

Read 2 more answers

Which statement can be represented by the equation shown? 9x-2=8x

NARA [144]

Answer:

first option

Step-by-step explanation:

angelo: 9x means it increases by 9 and the 2 means it starts at 2

tom: 8x means it increases by 8 and there's no starting rate so it's just 0

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3 years ago

An opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign. How many pe

77julia77 [94]

Answer:

The number of people would have participate in opinion poll

n = 15,267

Step-by-step explanation:

Step(i):-

Given data an opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign.

Given proportion = 36% =0.36

Given the margin of error = 1% =0.01

Level of significance = 99% 0 r 0.01

Z₀.₀₁ = 2.576

step(ii):-

The margin of error of Population proportion is determined by

$M.E = \frac{Z_{0.01} \sqrt{p(1-p)} }{\sqrt{n} }$

$0.01 = \frac{2.576 \sqrt{0.36(1-0.36)} }{\sqrt{n} }$

$\sqrt{n} = \frac{2.576 \sqrt{0.36(1-0.36)} }{0.01 }$

√n = 123.648

Squaring on both sides , we get

n = 15,267

final answer:-

The number of people would have participate in opinion poll

n = 15,267

7 0

3 years ago

A school wants to have a metal gate placed around it. However they only want to cover three sides of the school and they only ha

Fofino [41]

Answer:

Width = 139.445 ft and Length = 1721.11 ft or

Width = 860.555 ft and Length = 278.89 ft

Step-by-step explanation:

If the school has a rectangular shape, we have that its perimeter and area are:

Perimeter = 2*Length + 2*Width

Area = Length * Width

If we just want to cover 3 sides of the school, we can affirm that:

2000 = Length + 2*Width (eq1)

And the area is 240,000 ft2, so:

240000 = Length * Width (eq2)

From (eq1), we have that:

Length = 2000 - 2*Width

Using this value in (eq2), we have:

240000 = (2000 - 2*Width) * Width

240000 = 2000*Width - 2*Width^2

Width^2 - 1000*Width + 120000 = 0

Using Bhaskara's formula, we have:

Delta = 1000^2 - 120000*4 = 520000

sqrt(Delta) = 721.11

Width1 = (1000 + 721.11)/2 = 860.555 ft

Width2 = (1000 - 721.11)/2 = 139.445 ft

If we use Width = 139.445 ft, we will find Length = 1721.11 ft

If we use Width = 860.555 ft, we will find Length = 278.89 ft

Both pairs of dimensions are valid answers, as they would use 2000 feet of gate and the area of the school would be 240,000 ft2

3 0

3 years ago

Write an equation of a line through the point (-5, -2) that is perpendicular to the x-axis. State the slope of the line.

zmey [24]

Perpendicular to x axis means then that the euation is x=something
given
(-5,-2)
(x,y)
so x=-5 is da equation

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3 years ago