Mara writes the expression x + 2(x – 4) – 4x. Which of these expressions are equivalent? Choose the
two correct answers.

1. -x-8
2. -3x-8
3. -2x-6
4. x-4+2x-8
5. x-4x+2x-8

Answer:

Step-by-step explanation:

a. area of rectangle=lxh

lxh

12x6

=72

b.area of triangle =1/2xbxh

1/2xbxh

1/2x3x6

=9

c.area of triangle =1/2xbxh

1/2xbxh

1/2x3x6

=9

d.a=l^2

=6x6

=36

Answer:

b

Step-by-step explanation:

Number is the same as ([tex]4^{-1}[/tex])([tex]2^{3}[/tex] ÷ [tex]4^{-2}[/tex]) is 32.

Option D is correct.

PEDMAS is an acronym for the words parenthesis, exponents, division, multiplication, addition, subtraction. The PEDMAS Rule is a set of rules that prioritize the order of calculations.

Given

([tex]4^{-1}[/tex])([tex]2^{3}[/tex] ÷ [tex]4^{-2}[/tex])

= [tex](4^{-1})[/tex] [tex](\frac{2^{3} }{4^{-2} })[/tex]

= [tex](4^{-1})[/tex][tex](\frac{2^{3} }{4^{-1}. 4^{-1}})[/tex]

= [tex](\frac{2^{3} }{4^{-1} })[/tex]

= [tex]2^{3} . 4^{1}[/tex]

= 8 × 4

= 32

Hence, number is the same as ([tex]4^{-1}[/tex])([tex]2^{3}[/tex] ÷ [tex]4^{-2}[/tex]) is 32.

Option D is correct.

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Answer:

320

Step-by-step explanation:

my work is on the picture pls give brainliest thanks

Answer:

x=3.9

Step-by-step explanation:

Answer:

8/9

Step-by-step explanation:

your adding 1/18 each time

Answer:

[tex]-27x^2\\[/tex]

Step-by-step explanation:

(Assuming you can use a calculator)

[tex]\sqrt[3]{-729x^6} = \sqrt[3]{-1} * \sqrt[3]{729} * \sqrt[3]{x^6} \\\sqrt[3]{-1} =-1\\\sqrt[3]{729} = 27\\\sqrt[3]{x^6} = ((x^6)^{1/3}) = x^(6/3) = x^2\\\\hence\\\sqrt[3]{-729x^6} = -1*27*x^2 = -27x^2[/tex]

Answer:

d

Step-by-step explanation:

Answer: 30 feet

Step-by-step explanation:

10 / 2.5 = 4

7.5 * 4 = 30

Answer:

The answer is 25√3cm²

Answer:

triangles have 3 sides. quadrilaterals have 4 sides. also, you have to know a side lenght and height of a triangle to get its area.

if ur talking about equilateral, then it would be 25√3 cm²

Answer: 36.32

Step-by-step explanation:

Area of circle is π(r^2)

r is d/2

= 3.14*((6.8/2)^2)

=36.32

Answer:

B

Step-by-step explanation:

Answer:

questions mistake look questions and apply the formula 1/2 B×H

if you have a triangle and don't know where are the base and the high use this formula

area = 0.5 × side  × side  × sin the angle between the 2 sides

area = o.5 (32.4) (49.2) (sin 18.5)

         = 797.04 × sin 18.5

          =252.9

Answer:

24 i think

Step-by-step explanation:

hope it helps (:

Answer:

h=12 + c=20

Step-by-step explanation:

a^2+b^2=c^2

9^2+h^2=15^2

15^2-9^2=h^2

225-81=h^2

144=h^2

[tex]\sqrt{144}[/tex] = h

12=h

a^2+b^2=c^2

16^2 + 12^2 = c^2

256+144=c^2

400=c^2

[tex]\sqrt{400}[/tex] = c

20=c

Answer:

its 70% of the speed they expected

Answer:

n= 19/7 I hope this helped!

Step-by-step explanation:

Answer:

2.714285714285714

Step-by-step explanation:

Answer:

x intercept = (0.3, 0)

y intercept = (0, 0.4)

Answer:

x: (0.3,0)

y: (0,0.4)

Answer:

y=(0.1)x and y=2(1/4)x represent exponential decay

the rest all are an equation used for exponential growth

Answer:

1, 3, 9, 27, 81, . . .

Step-by-step explanation:

Got it right on edg

Answer:

Step-by-step explanation: bro use sin=opposite/hypotenuse

Answer:

[tex]P(E) = 26 \%[/tex]

Step-by-step explanation:

Given

[tex]P(F) = 46\%[/tex]

[tex]P(E\ and\ F) = 10\%[/tex]

[tex]P(E\ or\ F) = 62\%[/tex]

Required

Find P(E)

In probability:

[tex]P(E\ and\ F) = P(E) + P(F) - p(E\ or\ F)[/tex]

Substitute the right values

[tex]10\% = P(E) + 46\% - 62\%[/tex]

[tex]10\% = P(E) -16 \%[/tex]

Collect Like Terms

[tex]P(E) = 10\% +16 \%[/tex]

[tex]P(E) = 26 \%[/tex]

It is a probability because all probabilities are within the range 0 to 100%

Answer:

x=14

PN=MN=85

Step-by-step explanation:

It is an isosceles triangle because PQ=MQ and QN is perpendicular to PM. PN=MN

8x-27=6x+1

2x=28

x=14

PN=MN=85

Answer:

Step-by-step explanation:

[tex]8 x- 27 = 6x + 1[/tex]

8x-27

8.14-27

85

The Answer is

A.(x+12)2 = -60

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

The formula for (a + b)² = a² + 2ab + b²

The equation x² + 24x + 60 = 0 in the form (x + p)² = q is

(x + 12)² = 84

Option A is the correct answer.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

x² + 24x + 60 = 0

We can write this as,

x² + 2 x 12 x (x) + 60 = 0

The formula for (a + b)² = a² + 2ab + b²

Add 144 on both sides.

x² + 2 x 12 x (x) + 60  + 144 = 0 + 144

x² + 2 x 12 x (x) + 144 + 60 = 144

[ 12² = 144 ]

Subtract 60 on both sides.

x² + 2 x 12 x (x) + 144 = 144 - 60

x² + 2 x 12 x (x) + 12² = 84

(x + 12)² = 84

Thus,

The equation x² + 24x + 60 = 0 in the form (x + p)² = q is

(x + 12)² = 84

Option A is the correct answer.

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Answer:

jsjsjsjsjjsjsj

Step-by-step explanation:

gyygyhdvvvzhNshxyJcjdjx

Answer:

a) 0.25 stands for 25 cents per mile

b) 32 stands for $32 just to rent the car

Step-by-step explanation:

Answer:

what is the question

Step-by-step explanation:

Answer:

Step-by-step explanation:

L = 2×π×r

9π cm = 2πr

9 cm = 2r

r = 4.5 cm

Answer:

The price to pay is $16.22

Step-by-step explanation:

From the question, the regular price is $24.95

now, there is a discount

So the price to pay is the regular minus the discount

Mathematically, we have this as:

24.95 - 35% of 24.95

= 24.95 - 0.35(24.95)

= $16.2175

This is approximately $16.22

Answer:

209 degrees

Step-by-step explanation:

Answer:

£43.05 (I believe, refer to step-by-step explanation.)

Step-by-step explanation:

Let's compare both of these tubs if we were to buy either of them for 14 days.

Starting with the 1 kilogram tub we need to do the calculation:

£3.20 × 14 = £44.80

(Type 3.2×14 into your calculator or write on paper this way to calculate.)

Now let's do the 2 kilogram tub.

£6.15 × 7 = £43.05

(Type 6.15×7 into your calculator or write on paper this way to calculate.)

The reason why I have put 7 instead of 14 is because it is 2 kilograms. Since Pippa uses 1 kilogram per day, you only need to buy 7. 2 × 7 = 14

So comparing either of these prices, buying 7 2-kilogram tubs is much cheaper compared to the 14 1-kilogram tubs.