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DENIUS [597]
2 years ago
14

Student answers 90% of the questions on the math exam correctly if she answers 27 questions correctly how many questions are on

exam
Mathematics
2 answers:
ddd [48]2 years ago
8 0

Answer:

There are 30 total questions on the exam

Explanation:

90% = 0.9

0.9 x TOTAL = 27

27/ 0.9 = TOTAL

30 = TOTAL

liubo4ka [24]2 years ago
4 0

Answer:

30 questions

Step-by-step explanation:

if you cross multiply and divide like this,

\frac{27}{x}= \frac{90}{100}

27 x 100 = 2700

2700 / 90 = 30

you'll get ; 30 !

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25. The figure shows a pie chart drawn to show the amount of white, yellow and pink flowers in a
harina [27]

Answer:

zgtz yzuzibzibjahsyssgs

Step-by-step explanation:

svgzhzybzvtztczy xuvxyvxyvxyxvyxvyxvydvdvydyvdbudubdbudbudbudyvdu d udub

7 0
3 years ago
(1+2i) (2+5i)
Lostsunrise [7]

Answer:

Step-by-step explanation:

first multiply 1 with 2+5i then multiply 2i with 2+5i and you will get

2+5i+4i+10i^2

then in the next step add 4i and 5i you will get 9i

in the next step put i^2=-1 and you will get -10

in the last step just substract 2-10 you will get -8 and 9i

and your answer will be -8+9i

5 0
3 years ago
5/8-11/20=?<br><br> Help what’s the answer I’m stuck on finding the LCM of the denominators
zhannawk [14.2K]

Answer:

3/40

Step-by-step explanation:

  • \frac{5}{8} - \frac{11}{20}
  • \frac{25}{40} - \frac{22}{40} (LCM is 40)
  • \frac{25-22}{40}
  • \frac{3}{40}

Therefore, the answer is 3/40!

4 0
2 years ago
What is the explicit formula for the sequence?
Aleksandr [31]

Answer:

a_{n} = n - 2

Step-by-step explanation:

Note the difference between consecutive terms is constant, that is

0 - (- 1) = 0 + 1 = 1

1 - 0 = 1

2 - 1 = 1

3 - 2 = 1

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 1 and d = 1, thus

a_{n} = - 1 + n - 1 = n - 2

7 0
3 years ago
Point 23 plus brainliest
Oksi-84 [34.3K]

Answer:

The answer is

<h2>4m ( m + 3x) ( m - 2)</h2>

Step-by-step explanation:

4m³ + 12xm² - 8m² - 24xm

Factorize the GCF out

The GCF of 4 , 12 , 8 and 24 is 4

So we have

4( m³ + 3xm² - 2m² - 6xm)

Next factor m out

We have

4m( m² + 3xm - 2m - 6x)

Factorize the terms in the bracket

That's

4m[ m( m + 3x) - 2 ( m + 3x) ]

Next factor ( m + 3x) out

We have the final answer as

<h3>4m ( m + 3x) ( m - 2)</h3>

Hope this helps you

5 0
3 years ago
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