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3 years ago

Please help me find the values and explain how you got the answer :))

Mathematics

1 answer:

Deffense [45]3 years ago

3 0

Step-by-step explanation:

it is an iscoceles triangle so a = b

use pythagorus theorem

a^2 + b^2 = c^2

a^2 + a^2 = 2^2

2a^2 = 4

a = square root 2

b = square root 2

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Josephine solved a quadratic equation. Her work is shown below.

mariarad [96]

Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49 means : (x + 7)² = 7²

(x + 7)² - 7²=0 use identity : a²-b² = (a-b)(a+b)

a=x+7 and b= 7

(x+7-7)(x+7+7) = 0

x(x+14)=0

x=0 or x+14=0

so : x=0 or x= -14

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4 years ago

Work out 5/8−2/5 Give your answer in its simplest form.

Inessa05 [86]

$\frac{5}{8} - \frac{2}{5}$

First, find the LCD (least common denominator) of the two fractions.
List the multiples of each denominator and find the one that is common.
Multiples of 8: 8, 16, 24, 32, 40
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
40 is your LCD.

Second, what can you divide by to make the denominators of each fraction '40'? Whatever you do to the bottom you must do to the top.
$\frac{5*5}{8*5} - \frac{2*8}{5*8}$

Third, multiply.
$\frac{25}{40} - \frac{16}{40}$

Fourth, since the denominators are the same now, we can combine them.
$\frac{25-16}{40}$

Fifth, subtract '25 - 16' to get 9.
$\frac{9}{40}$

Since $\frac{9}{40}$ is already in the simplest form, it is your answer.

Answer as fraction: $\frac{9}{40}$
Answer as decimal: $0.225$

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3 years ago

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andrew11 [14]

If it’s linar it would be across right? So it’s not linar is exponential

Answer: what I just said xD

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Amiraneli [1.4K]

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Its B

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3 years ago

Garth is giving 10 of the action figures from his collection to his brother. If a represents the number of action figures Garth

lawyer [7]

The answer is “a-10”
have a great dayyy!!! :)

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