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2 years ago

Help me solve this test :)

Mathematics

2 answers:

lakkis [162]2 years ago

5 0

Answer:

D: (5 * 3)^3

D: 125 x 27

Step-by-step explanation:

andre [41]2 years ago

5 0

(5•3)^3 = 3,375

First step you do is 5•3 = 15 and then 15^3 = 3,375

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A line graph titled Text messages sent has time of day on the x-axis and number of text on the y-axis. Girls sent 10 in the morn

slavikrds [6]

Answer:

Boys sent more text messages than girls during the

✔ night

In the morning, girls sent about

✔ 5

more text messages than boys.

Both boys and girls sent the most text messages in the

✔ evening

During the afternoon, the students sent a total of approximately

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text messages.

Step-by-step explanation:

7 0

3 years ago

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I need help to find the slope of the line the answers are A: 4 B:-1/4 C:-4 D:1/4

dolphi86 [110]

Answer:

-1/4

Step-by-step explanation:

Take two points on the line

(-4,-1) and (0,-2)

Using the slope formula

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3 years ago

Elena painted 5/9 of a wall, Matthew painted 3/9 of the wall. Kevin painted the rest of the wall. What fraction of the wall did

WINSTONCH [101]

Add 5/9 and 3/9 to get 8/9 which is what the others painted so kevin painted 1/9 which is the rest of the wall so it is a

4 0

3 years ago

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Two angles of a quadrilateral are of measures 75° and 117° respectively and the other two angles are equal find the measure of e

insens350 [35]

Answer:

Step-by-step explanation:

The sum of interior angles of a quadrilateral is 360°.

If we consider the measure of one of the unknown angles to be $x$ °, we can set up the following equation:

$x + x + 75^\circ + 117^\circ = 360^\circ$

Now we can solve for $x$ :

⇒ $2x + 192^\circ = 360^\circ$

⇒ $2x = 360^\circ - 192^\circ$ [subtracting 192° from both sides]

⇒ $2x = 168^\circ$

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⇒ $x = \bf84^\circ$

Therefore, the other two angles each have a measure of 84°.

4 0

2 years ago

A woman has eight keys on a key ring, one of which fits the door she wants to unlock. Sherandomly selects a key and tries it. If

natulia [17]

Answer:

The expected number of keys she will try before she opens the door is 4.5.

Step-by-step explanation:

A woman has eight keys on a key ring, one of which fits the door she wants to unlock.

Each of them is equally as likely to be the one to work, which means that this situation is represented by an uniform distribution with lower bound $a = 1$ and upper bound $b = 8$ .

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The expected value of the uniform distribution is given by:

$E = \frac{a + b}{2}$

Considering $a = 1, b = 8$ , as is the case in this exercise:

$E = \frac{1 + 8}{2} = 4.5$

The expected number of keys she will try before she opens the door is 4.5.

3 0

3 years ago