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3 years ago

The length of the rectangle is x+2x-3 and the with is 5x+4. what is the perimeter of the rectangle

Mathematics

1 answer:

timurjin [86]3 years ago

6 0

Answer:

$2(8x - 7)$

Step-by-step explanation:

( x + 2x - 3)(2) + (5x + 4)(2) = 2x+4x-6+10x-8

= 16x - 14

= 2(8x-7) (when factorised/simplified)

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Find the exact value of x.

Tom [10]

Answer:

7 $\sqrt{2}$ or 9.89

Step-by-step explanation:

sin45= $\frac{7}{x}$

x= $\frac{7}{sin 45}$

x= 7 $\sqrt{2}$ or 9.89

4 0

3 years ago

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A sample of 260 students enrolled at a university were asked what they intended to do after graduation. The results are shown be

vovikov84 [41]

ANSWER

$30\%$

EXPLANATION

The total number of students can be calculated by adding all the frequencies.

From the graph the total frequency is,

$39+117+78+26 =260$

The number of students who intend to go into state or local government after graduation is 78.

The percentage of students who intend to go into state or local government after graduation

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$= \frac{3}{10} \times 100\%$

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4 years ago

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If 800g of a radioactive substance are present initially and 8 years later only 450g remain, how much of the substance will be p

artcher [175]

A=Pe^(rt)

P = 800g

t = 8 years

A = 450g

r = This is what we will try and find to start with

450=800e^(r*8)

After running the math through a calculator, we end with r = -0.07192

Now we just re-input this information into our equation: A=800e^(-0.07192*16)

A=800e^(1.15072)

Now we will re-write the equation using the negative exponent rule:

A = 800 1/e^1.15072

Combine right side:

A = 800/e^1.15072

Then do the math:

A = 253.12709836......

That will give us A = 253 (rounded to the whole number)

I hope this helps! :)

5 0

3 years ago

Help me this is the last question i just need to know what to use to solve the problem

Genrish500 [490]

Answer:

Not even one day

Step-by-step explanation:

I mean if it uses 4 bags a day . . .

2/5's wont last long at all

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3 years ago

How do the areas of the parallelogram compare?

IrinaK [193]

The first choice is right, area of 1 is 20, area of 2 is 16

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3 years ago

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The length of the rectangle is x+2x-3 and the with is 5x+4. what is the perimeter of the rectangle​

The length of the rectangle is x+2x-3 and the with is 5x+4. what is the perimeter of the rectangle