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3 years ago

Please answer this correctly

Mathematics

1 answer:

goblinko [34]3 years ago

7 0

Answer:

Car: 60%

Motorcycle: 30%

Truck: 10%

Step-by-step explanation:

Car: $\frac{12}{12+6+2} =\frac{12}{20} =\frac{60}{100}$ or 60%

Motorcycle: $\frac{6}{12+6+2} =\frac{6}{20} =\frac{30}{100}$ or 30%

Truck: $\frac{2}{12+6+2} =\frac{2}{20} =\frac{10}{100}$ or 10%

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Marco model bridge is 9 centimetres taller than joes model bridge. if Joe's bridge is 31 centimetres tall. write an Equation tha

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9 + 31 = x. If Macros bridge is 9 centimeters taller than 31, you just have to do 9 + 31.

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3 years ago

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One solution of x^2-25=0 is 5 what is the other solution

zepelin [54]

Add 25 to both sides:

$x^2 = 25$

Square root both sides.

When you square root a perfect square, you will get a plus/minus result:

$\sqrt{25} = \pm 5$

$x = \pm 5$

$\boxed{x = -5} \land \boxed{x = 5}$

The other solution to this answer is x = -5.

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3 years ago

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Mekhanik [1.2K]

Answer:

Step-by-step explanation:

Perpendicular lines are lines whose slopes are negative reciprocals of each other

To find the slope of the line we are given, we can rearrange the equation

$4x - 5y = 4\\4x - 4 = 5y\\y = \frac{4}{5}(x) - \frac{4}{5}$

The slope of this line is $\frac{4}{5}$ , so the slope of the other line is $\frac{-5}{4}$

next, we can use the given point to find the equation $y = mx +b$

we know m, we can solve for b

$y = \frac{-5}{4}(x) + b\\-3 = \frac{-5}{4}(-2) + b\\-3 = \frac{5}{2} + b\\\frac{-6}{2} = \frac{5}{2} + b\\$

$b = \frac{-11}{2}$

$so,\\y = \frac{-5}{4}(x) - \frac{11}{2}$

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2 years ago

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3 years ago

A new shopping mall records 120 total shoppers on their first day of business. Each day after that, the number of shoppers is 10

Marta_Voda [28]

Answer:

1138

Step-by-step explanation:

From the information given:

We can represent it perfectly in an exponential form:

$m = p(q)^x$

where;

p = initial value = 120

q = base of the exponential form

q = 1 + r

here; r = rate in decimal = 10% = 0.1

Then q can now be = 1 + 0.1 = 1.1

Replacing it into the exponential form, we get:

$m = 120(1.1)^x$

where;

x = number of days and m = number of shoppers

Thus:

For the first day:

$m = 120(1.1)^x$

m = 120

For the second day:

$m = 120(1.1)^1$

m = 132

For the third day:

$m = 120(1.1)^2$

m = 145.2

For the fourth day

$m = 120(1.1)^3$

m = 159.72

For the fifth-day

$m = 120(1.1)^4$

m = 175.692

For the sixth-day

$m = 120(1.1)^5$

m = 193.2612

For the seventh-day

$m = 120(1.1)^6$

m = 212.58732

Thus; the total numbers of shoppers for the first 7 days is:

$= 120+ 132 + 145.2 + 159.72 + 175.692+193.2612+212.58732$

= 1138.46052

≅ 1138

6 0

3 years ago