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3 years ago

Three is 7 more than one-fifth of a number.

Mathematics

1 answer:

Paha777 [63]3 years ago

5 0

Answer:

3=1/5x+7

Step-by-step explanation:

when it says "Of a number" it means to add a variable, so i added a x. and when it says "more than" it means to add, so 3=1/5x+7 is the answer

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2.6.4 practice algebra 2 you are helping to design a road for a high mountain pass. there are two routes over the pass, but both

lora16 [44]

Answer:

Step-by-step explanation:

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3 years ago

Carrie gave her hair stylist a $4.20 tip. The tip was 15% of the cost of the

Wittaler [7]

The total cost of her haircut was 28 dollars

step by step:

(percentage) 15 x 6 = 90

4.20 x 6 =25.2

(perscentage) 15 divided by 3 = 5

4.20 divided by 3 = 1.4

1.4 + 1.4 = 2.8

25.2 + 2.8 =28

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3 years ago

Find range of f(x) = <img src="https://tex.z-dn.net/?f=1%20%5Cdiv%20%28%20%7Cx%7C%20%20-%20x%29" id="TexFormula1" title

SCORPION-xisa [38]

Step-by-step explanation:

We need to find thr range if

$\frac{1}{ (|x| - x)}$

The absoulte value of something is positive.

$\frac{1}{x - x} = \frac{1}{0}$

This function isn't possible so no range exist.

7 0

3 years ago

Robin is flying a kite. She ties the 50 foot kite string to the ground. If the kite is

krok68 [10]

$\bold{\huge{\orange{\underline{ Solution }}}}$

<h3>Given :-</h3>

We have given in the question that, Robin is flying a kite.
She ties the 50 foot kite string to the ground .
The kite is flying at 40 feet high

We have to find the measure of the angle the string forms with the group that is angle of elevation.

<h3>Let's Begin :-</h3>

According to the given question,

Hypotenuse AC ( Distance of string from the ground) = 50 ft.
Perpendicular height AB ( Distance of the kite from the ground) = 40 ft.

<h3>Therefore, </h3>

By using trigonometric ratios,

{ $\bold{\pink{ Sin Φ = }}{\bold{\pink{\dfrac{Perpendicular}{Hypotenuse }}}}$

$\bold{\red{ Cos Φ = }}{\bold{\red{\dfrac{Base}{Hypotenuse }}}}$

$\bold{\purple{ Sin Φ = }}{\bold{\purple{\dfrac{Perpendicular}{Base }}}}$ }

The Angle of elevation will be 

[ The angle that is formed between the line of sight and base of the triangle is called angle of elevation ]

$\bold{\pink{Sin Φ = }}{\bold{\pink{\dfrac{AB}{AC }}}}$

$\sf{ Sin Φ = }{\sf{\dfrac{40}{50 }}}$

$\sf{ Sin Φ = }{\sf{\dfrac{4}{5}}}$

$\sf{ Sin Φ = 0.8 }$

$\bold{\green{ Φ = 45.83° }}$

Hence, The measure of the angle the string forms with the ground is 45.83° .

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2 years ago

Please, I give 20 score. Find the volume

Elza [17]

Answer:

2388.16 in³

Step-by-step explanation:

1) find volume of cylinder

formula: πr²h

given:

π = 3.14

r = 8/2 = 4 in

h = 9 in

$\pi \: r {}^{2} h$

$(3.14) \times (4 {}^{2} ) \times 9$

$3.14 \times 16 \times 9$

$452.16 \: {in}^{3}$

2) find volume of cuboid

formula: length × width × height

given:

length = 16 in

width = 11 in

height = 11 in

$l \: \times w \: \times h$

$16 \times 11 \times 11$

$1936 \: in {}^{3}$

total volume of figure

= volume of cylinder + volume of cuboid

= 452.16 in³ + 1936 in³

= 2388.16 in³

6 0

3 years ago

Three is 7 more than one-fifth of a number.​

Three is 7 more than one-fifth of a number.