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Verizon [17]
4 years ago
14

I need help in these pretty please :)

Mathematics
2 answers:
GaryK [48]4 years ago
7 0

Answer:

see below

Step-by-step explanation:

1.

= 84 / 3 = 28

= 2 * 28 = 56

= 1 * 28 = 28

2.

280 / 8 = 35

= 3 * 35 = 105

= 5 * 35 = 175

3.

2100 / 7 = 300

= 4 * 300 = 1200

= 3 * 300 = 900

4.

420 / 6 = 70

= 1 * 70 = 70

= 2 * 70 = 140

= 3 * 70 = 210

5.

360/8 = 45

45 * 5 = 225

45 * 1 = 45

45 * 2 = 90

6.

1000 / 25 = 125

jenny = 125 x 5 = 625

chris = 125 x 3 = 375

7.

3000 / 10 = 300

fred = 7 * 300 = 2100

freda = 3 * 300 = 900

8.

2842 / 7 = 406

adults =  5 * 406 = 2030

children = 2 * 406 = 812

Licemer1 [7]4 years ago
5 0

Answer:

Step-by-step explanation:

1.

84 / 3 = 28

2 * 28 = 56

1 * 28 = 28

2.

280 / 8 = 35

3 * 35 = 105

5 * 35 = 175

3.

2100 / 7 = 300

4 * 300 = 1200

3 * 300 = 900

4.

420 / 6 = 70

1 * 70 = 70

2 * 70 = 140

3 * 70 = 210

5.

360/8 = 45

5 * 45 = 225

1 * 45 = 45

2 * 45 = 90

6.

1000 / 25 = 125

jenny = 125 x 5 = 625

chris = 125 x 3 = 375

7.

3000 / 10 = 300

fred = 7 * 300 = 2100

freda = 3 * 300 = 900

8.

2842 / 7 = 406

adults =  5 * 406 = 2030

children = 2 * 406 = 812

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Sergeeva-Olga [200]
Hello, there!

He could use answer D. 8 feet by 3 feet.

The formula for area of a rectangle is L * W = A

The length is 8 and and the width is height

8 * 3 = A

8 * 3 = 24

Therefore, the answer is D.


I hope helped!

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6 0
4 years ago
What is the slope of the line that passes through the points (-2, -3) and (5,4) ? -3 3 -1 1
Andrews [41]

Answer:

\boxed{\textsf{ The slope of the line is \textbf{1}.}}

Step-by-step explanation:

Two points are given to us and we need to find the slope of the line that passes through these two points . The two points are (-2,-3) and (5,4) .As we know that the slope of the line is given by \tan\theta

<u>Slope </u><u>of </u><u>a </u><u>line </u><u>is </u><u>:</u><u>-</u>

\boxed{\boxed{ \sf Slope =\dfrac{ y_2-y_1}{x_2-x_1}=\tan\theta }}

On using this formula we can find the slope of the line .

<u>Putting</u><u> the</u><u> </u><u>respective</u><u> values</u><u> </u><u>:</u><u>-</u>

\sf\implies Slope = \dfrac{y_2-y_1}{x_2-x_1}\\\\\sf\implies Slope = \dfrac{ -3-4}{-2-5} \\\\\sf\implies Slope =\dfrac{-7}{-7}\\\\\sf\implies\boxed{\pink{\sf Slope = 1 }}

8 0
3 years ago
The 20 girls in the class represent 55% of the students in the class. How many students are in the class?
Reptile [31]

Answer:

36 students

Step-by-step explanation:

1. Set up a proportion. Since we are trying to find out the number of students in the class, that number will be x. We can say that 20/x=55/100, because 55% is 55/100.

2. Simplify in which we can find x. Multiply x on both sides and multiply by 100 on both sides (or just cross multiply). You would get that 55x=2000, and if you divide by 55 on both sides, it would be x = 36.3636364, and since you can't have a fraction of a person, you round it to the nearest whole number.

Answer: There are 36 students in the class.

8 0
3 years ago
Susie school is due west of her house into south of her friend Alana‘s house. The distance between the school and Alana‘s house
mel-nik [20]

\huge\boxed{\sqrt{44.33}\ \text{miles}\ (\approx 6.66\ \text{miles})}

(See the attached diagram.)

We know one leg of a right triangle as well as its hypotenuse. We need to find the other leg using the Pythagorean Theorem.

The Pythagorean Theorem states that a^{2}+b^{2}=c^{2}, where a and b are the legs and c is the hypotenuse.

Insert the known values into the equation. The distance between Susie's house and the school will be represented by b.

5.6^{2}+b^{2}=8.7^{2}

Convert the decimals to fractions.

(\frac{28}{5})^{2}+b^{2}=(\frac{87}{10})^{2}

To raise a fraction to a power, raise both the numerator and the denominator to that power.

\frac{784}{25}+b^{2}=\frac{7569}{100}

Multiply both sides of the equation by 100.

3136+100b^{2}=7569

Subtract 3136 from both sides.

100b^2=7569-3136

Subtract.

100b^{2}=4433

Divide both sides by 100.

b^{2}=44.33

Take the square root of both sides.

b=\boxed{\sqrt{44.33}\approx6.66}

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3 years ago
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Gnoma [55]

Answer:

Option B is correct answer.

Step-by-step explanation:

We need to solve the expression sec2xcot2x.

We know sec x = 1/ cos x and cot x = 1/ tan x and tan x = sin x/cos x and 1/tanx = cosx /sinx

Since in question we 2x instead of x so, replacing x with 2x and Putting values:

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So, Option B is correct answer.

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3 years ago
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