An expression is evaluated as shown below.



8 + 3 × (4 ÷ 2) − 7



Step 1: 8 + 3 × 2 − 7

Step 2: 11 × 2 − 7

Step 3: 22 − 7

Step 4: 15



In which step does a mistake first appear?

Explanation: In this expression, +2w, +4w, and +8w are called terms and the numbers in front of the variables, +2, +4, and +8 are called coefficients.

Because the variables are identical,

the three terms in this problem are called like terms.

They can be added together by adding their coefficients.

Since 2 + 4 + 8 is 14, 2w + 4w + 8w is 14w.

Answer:

90

Step-by-step explanation:

Just multiply what the variables equal to

Step-by-step explanation:

[tex] \underline{ \underline{ \text{Given}} }: [/tex]

[tex] \underline{ \underline{ \text{To \: find}}} : [/tex]

[tex] \underline{ \underline{ \text{Solution}}} : [/tex]

Plug the values of x , y & z in the given expression and then multiply !

⇾ [tex] \tt{2 \times ( - 5) \times ( - 9)}[/tex]

⇾ [tex] \tt{( - 10) \times ( - 9)}[/tex]

⇾ [tex] \tt{90}[/tex]

[tex] \red{ \boxed{ \boxed{ \text{Our \: final \: answer : \boxed{ \underline{ \tt{ 90}}}}}}}[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Answer:

the length is 14 yards and the width is 8 yards

Answer:I think is 18 divided by 6

Step-by-step explanation:

Because they are saying each that is your clue word that means you need to divide.

I hope it helps :)

Answer:

use the app called msthway

Answer:

C not sure though

Step-by-step explanation:

Answer:

[tex]\displaystyle 23[/tex]

Step-by-step explanation:

[tex]\displaystyle 4p = p + 69 → -69 = -3p; 23 = p[/tex]

I am joyous to assist you at any time.

Answer:

a=8

Step-by-step explanation:

solve for a by adding 5 on both sides

4a=32

Now divid 4 on both sides

a=8

Answer:

j + 2

Step-by-step explanation:

1/3(3j) + 1/3(6)

1/3(3j) = j

1/3(6) = 2

Answer: j + 2

Answer:

48 sec.

Step-by-step explanation:

8 devided by 10.

Answer:

48 seconds

Step-by-step explanation:

8 min / 10 laps = 0.8 mins

to convert minutes into seconds, multiply by 60

0.8*60 = 48 seconds

Answer:

m∠BAC=135°

Step-by-step explanation:

360- 84=276

276-141=135

Hope this helps!

Please mark me brainliest if you can. :)

Answer:

μy = $6.56 ; σy = 2.77

Step-by-step explanation:

Given the data :

Mean μx= $8.56

Standard Deviation σx ≈ 2.77

Profit, Y on pizza with current promo :

Price off on pizza = $2

Y = x - 2

μx = E(x) = $8.56

μy = μ(x - 2)

μy = μx - $2

μy = $8.56 - $2

μy = $6.56

For the standard deviation of y

σx ≈ 2.77

σy = σ(x - 2)

σy = σx - 2

Constants are treated as 0 for standard deviation

σy = 2.77

Answer:

0.390%

Step-by-step explanation:

100-36=64

25÷64=0.390625

Answer:

2.6

explanation:

100-36=64

64/25= 2.6

Answers

x= -3/2

x= 3i

x= -3i

Step-by-step explanation:

f (x) = 2x3 + 3x2 + 18x + 27

Set 2x^3 + 3x^2 + 18x + 27 equal to 0.

2x^3 + 3x^2 + 18x + 27 = 0

Solve for x.

Factor the left side of the equation.

Factor out the greatest common factor from each group.

x^2 (2x + 3) + 9 (2x + 3) = 0

Factor the polynomial by factoring out the greatest common factor, 2x + 3. (2x + 3) (x^2 + 9) = 0

If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.

2x + 3 = 0

x^2 + 9 = 0

Set 2x + 3 equal to 0 and solve for x.

Set 2x + 3 equal to 0. 2x + 3 = 0

Solve 2x + 3 = 0 for x. Tap for more steps...  

3 x = − 2

Set x2 + 9 equal to 0 and solve for x.

Set x2 + 9 equal to 0. x2 + 9 = 0

Solve x2 + 9 = 0 for x.

x = 3i, −3i

The final solution is all the values that make (2x + 3) (x2 + 9) = 0 true.

x = − 3/2 , 3i, −3i

Answer:

The best course grade your friend can earn is 0.867 = 86.7%.

The minimum score would your friend would need on the final to earn a 75% for the course is of 0.61 = 61%.

Step-by-step explanation:

This is a weighed average problem, in which we multiply each grade by its weight.

We have that:

In 70% of the course, the friend has a grade of 81%.

In the other 30%, he will have x.

What is the best course grade your friend can earn?

This will happen if he earns 100% = 1 on the final test. So

[tex]G = 0.7*0.81 + 0.3*1 = 0.867[/tex]

The best course grade your friend can earn is 0.867 = 86.7%.

What is the minimum score would your friend would need on the final to earn a 75% for the course?

This is x, when the grade is 0.75. So

[tex]0.75 = 0.7*0.81 + 0.3x[/tex]

[tex]0.3x = 0.75 - 0.7*0.81[/tex]

[tex]x = \frac{(0.75 - 0.7*0.81)}{0.3}[/tex]

[tex]x = 0.61[/tex]

The minimum score would your friend would need on the final to earn a 75% for the course is of 0.61 = 61%.

The probability that the numbers on the broken calculators are at least 16 will be 0.9997.

Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.

There are 30 calculators numbered 1-30 in a case. If 4 of the calculators are broken.

Then the probability that the numbers on the broken calculators are at least 16 will be

Number of ways to get a sum less than 16 = 1234, 1235, 1236, 1237, 1238, 1239, 2345, 2346 = 8

Probability = 1 – 8 / (³⁰C₄) =  1 – 8/27405 = 0.99970808246

More about the probability link is given below.

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Answer:

A.

Step-by-step explanation:

cause its congruent just flip and get

ZYX

brainliest appreciated

Answer: The exact answer is 17.662 so I would assume the answer is 18 because it rounds up

Step-by-step explanation:

Answer:

the material when you get a chance can you send me the material

Answer:

yes

Step-by-step explanation:

y=5+5/1

5/1= rise/run

Answer:

Yes

Step-by-step explanation:

when you go over one (x), you go up five (y), on the chart. That's the definition of a slope - rise/run.

Answer:

Ty for the free poiunts!

Step-by-step explanation:

You got the answer right LLO

Answer:

Yea the answer is right

Step-by-step explanation:

Answer:

104.4 for A.

Step-by-step explanation:

que

Step-by-step explanation:

usye sane epañol...

Answer:

All of the answers are correct.

Answer:

all the answers are right bc if u look at them their all the same i also took the test

Step-by-step explanation:

Apply l'Hopital's rule:

[tex]\displaystyle\lim_{x\to\pi}\frac{\displaystyle\int_\pi^x (1+\tan(t))\,\mathrm dt}{\pi\sin(x)}=\lim_{x\to\pi}\frac{1+\tan(x)}{\pi\cos(x)}=\frac{1+\tan(\pi)}{\pi\cos(\pi)}=\boxed{-\frac1\pi}[/tex]

where

[tex]\displaystyle\frac{\mathrm d}{\mathrm dx}\left[\int_\pi^x(1+\tan(t))\,\mathrm dt\right]=1+\tan(x)[/tex]

follows from the fundamental theorem of calculus.

The number of the trees that will be left after 10 years will be 2.3 billions.

A rate of change is negative when the output decreases as the input increases or when the output increases as the input decreases.

Given that, the number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees.

The expression will be:

A = P(1-r)ⁿ

A = final amount

P = initial amount

r = rate

n = time

Therefore,

A = 2500000000(1-00.5)¹⁰

A = 2500000000(0.995)¹⁰

A = 2300000000

Hence, the number of the trees that will be left after 10 years will be 2.3 billions.

Learn more about decreasing rate, click;

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