All categories

2 years ago

Help me please! Will give 20 Brainly points!

Mathematics

1 answer:

Vitek1552 [10]2 years ago

3 0

The first one would be 5 and the second is 3 thanks and mark as brainiliest

You might be interested in

6. Jay has a rope that is 31 ft long. He

SCORPION-xisa [38]

Answer:

No, he does not have enough rope. 0.26 ft short.

Step-by-step explanation:

3 x 10.42 = 31.26

31.26 - 31 = 0.26

3 0

3 years ago

PLEASE ANSWER SOON Has a picture of question

earnstyle [38]

The answer is 21 which comes from 7 * 3.

Draw the four points in a complex plane. From the drawing you can see that the lenght is 4i - (-3i) = 4i + 3i = 7i, and the width is 1 - (-2) = 1 + 2 = 3.

So, the area is 7 * 3 = 21.

8 0

2 years ago

In Class 1, what is the median score? A) 70 B) 70.5 C) 71.5 D) 72

evablogger [386]

Answer:

B) 70.5

Step-by-step explanation:

Median = middle value when the values are placed in order.

If there are two middle values, the median is the mean of those two values.

Class 1

45 46 51 52 53 53 61 63 64 65 66 68 70 70 71 73 76 77 79 81 82 83 84 87 90 92 93 95

There are 28 values in Class 1.

Therefore, there are two middle values: 14th and 15th values

14th value = 70

15th value = 71

$\implies \textsf{Median}=\dfrac{70+71}{2}=70.5$

3 0

1 year ago

Read 2 more answers

If 150 grams of a radioactive isotope are present at 2:00 PM and 10 grams remain at 6:00 PM (the same day), what is the half-lif

pogonyaev

Initial amount, $A_o=150\ g$ .

Final amount, $A =10\ g$ .

Time taken, t = 6:00 - 2:00 = 4 hour.

We know,

$A=A_o(\dfrac{1}{2})^{\dfrac{t}{h}}\\\\10 = 150 \times \dfrac{1}{2}^{\dfrac{4}{h}}\\\\2^{\dfrac{4}{h}}=15\\\\\dfrac{4}{h}= log_215\\\\h = \dfrac{4}{log_215}\\\\h = 1.024 \ hours$

Therefore, the half-life of the isotope is 1.024 hours.

Hence, this is the required solution.

8 0

2 years ago

Please answer ASAP worth 10marks (will also mark Brainiest )

labwork [276]

Answer:

1. [-1,10]

[-3, 9]

2. [-1, 5]

[-12,20]

3. [-6,15]

[-13,19]

4. (I cant read)

5. [30]

6.[20,-10]

[-20,10]

Step-by-step explanation:

4 0

2 years ago