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ivanzaharov [21]
3 years ago
14

Frank scored 75% on his spelling test with 40 questions. How many questions did he get right ?

Mathematics
2 answers:
kolbaska11 [484]3 years ago
4 0

Answer:

He got 30 right!

Step-by-step explanation:

BabaBlast [244]3 years ago
4 0

Answer:

30

Step-by-step explanation:

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A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:
aleksandr82 [10.1K]

Answer is<em> </em><em><u>3t²-6t</u></em>

<h3>Step-by-step Explanation:-</h3>

s(t) =  {t}^{3} - 3 {t}^{2} + 8

Now we need to find velocity. The velocity is the first derivative of position, so let's find the derivative of s(t) :-

s'(t) = v(t) = 3 {t}^{3 - 1} - 3 \times 2 {t}^{2 - 1}

So,

v(t) = 3 {t}^{2} - 6t

Therefore, <u>v(t) = 3t²-6t</u>

7 0
2 years ago
Last year, Kaitlin opened an investment account with $8600. At the end of the year, the amount in the account had decreased by 2
musickatia [10]

Answer:

Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.

Step-by-step explanation:

Given that last year Kaitlin opened an investment account with $ 8,600, and at the end of the year, the amount in the account had decreased by 28%, to determine the year-end amount in terms of the original amount both in whole numbers and in decimals, the following calculation must be performed:

100 - 28 = 72

8,600 x 0.72 = X

6.192 = X

Thus, Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.

5 0
3 years ago
A spanish class has a total of 33 students. The number of males is 17 more than the number of females. How many males and how ma
andrezito [222]

Answer:

25 males and 8 females.

Step-by-step explanation:

If x is the number of males and y = number of females we have the system:

x + y = 33

x - y = 17   Adding:

2x = 50

x = 25

so  y = 33 - 25 = 8.

3 0
4 years ago
Odette plants basil from seed and each day measures the height of the plants compared to the soil line. She records her measurem
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Answer: are there any options

Step-by-step explanation:

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3 years ago
What is the TOTAL amount in his account after 2 years
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