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3 years ago

Please help me please

Mathematics

1 answer:

Yuri [45]3 years ago

8 0

Answer:

1. 6 2. 8 3. 4 4.40 5 . 4 Step-by-step explanation:

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Find x (steps pls) | x - 7| = 2 (i dunt understand the | in the questions)

kirill [66]

these two bars | | mean absolute value

here's how to find x

| x - 7| = 2

first apply the absolute rule

x - 7 = 2 x - 7 = -2

in both equations add 7 on both sides

x - 7 + 7 = 2 + 7 x - 7 + 7 = -2 + 7

then simplify the expressions

x = 9 x = 5

now combine these two solutions to get your answer

x = 9 or x = 5

hopefully my explanation helps

3 0

3 years ago

Add. Express your answer in simplest form. 5/10+3/10

AlexFokin [52]

Rules in adding fractions:

1) Make sure that they have common denominator.
5/10 + 3/10

2) Since both fraction have a denominator of 10, add the numerator and place the sum above the denominator

5/10 + 3/10 = (5 + 3)/10 = 8/10

3) Simplify the fraction
8/10 can still be simplified into 4/5

8 ÷ 2 = 4
10 ÷ 2 = 5

5/10 + 3/10 = 4/5

8 0

3 years ago

Read 2 more answers

In the graduating class of a certain college, 48 percent of the students are male and 52 percent are female. In this class 40 pe

marishachu [46]

Answer:

Option B is right

Step-by-step explanation:

Given that in the graduating class of a certain college, 48 percent of the students are male and 52 percent are female. In this class 40 percent of the male and 20 percent of the female students are 25 years old or older.

Males Females

48% 52%

25 or more

age 40% 20%

One student in the class is randomly selected,

to find the probability that he or she will be less than 25 years old

= Prob (male and less than 25 years old)+Prob (female and less than 25 years old)

(since mutually exclusive and exhaustive)

= $0.48(1-0.4) + 0.52(1-0.20)\\= 0.288+ 0.416\\= 0.704\\$

After rounding off to 1 one decimal

we get 0.7

Option B is right

8 0

4 years ago

Students were surveyed about their wither break plans.Of the people that stated they were going skiing, 25% did not actually go.

Romashka [77]

Answer:

The number of students who actually went for the skiing is 0.75 times the total number of students .

Step-by-step explanation:

Given as :

Students were surveyed about their wither break plans

The percentage of students who did not go for skiing = 25 %

So, The percentage of students who did not go for skiing =100 % - 25 % = 75%

Let The total number of students = x

So, The number of students actually went for the skiing = 75% of the total number of students

I.e The number of students actually went for the skiing = $\frac{75}{100}$ × x

Or, The number of students actually went for the skiing = 0.75× x

∴ The number of students actually went for the skiing = 0.75 x

Hence The number of students who actually went for the skiing is 0.75 times the total number of students . Answer

7 0

4 years ago

In a plane, line N is parallel to line O, line O is parallel to P, and line L is perpendicular to line N. Which must be true? N.

Leni [432]

The correct answer is:

Line L must be perpendicular to both line O and line P as well.

Explanation:

Since N, O and P are all parallel, any line that intersects N will intersect O and P at the same angle. Since L is perpendicular to N, intersecting at a right angle, this means it must be perpendicular to O and P also.

7 0

3 years ago

Please help me please​

Please help me please