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3 years ago

Help Please! It would help a lot!!!! 20 POINTS!

Mathematics

1 answer:

Mademuasel [1]3 years ago

8 0

Answer:

first are don't know which subject is this English on May $85 - $89 83 - 87 the larger than Tuta Tan Tan Tan Tan that that that that your answer to the end of the three classes example class rur $87 what was the Angry of all three class a spelling your answer to need hundred Mr have the same Test 2 class 1st class $80

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Please help me I don’t understand

Scilla [17]

I think 8. Plug in -4 for x. 1/2-4^2
Using pemdas -4^2 is 16 and 1/2•16 is 8. If there were parenthesis around 1/2x then 1/2•-4 would be -2 and -2^2 is 4 but since there aren’t parentheses then 8

3 0

3 years ago

If tan t=5/7, what is tan(t−Pi)?

sergejj [24]

Answer:

-0.04

Step-by-step explanation:

tan( $\frac{5}{7}$ - π) = -0.04

4 0

3 years ago

The no. Of adel beads to that of claire's beads was the ratio 7 :4 .When adel gave 68 beads to claire the ratio become 25 :41 .

Novosadov [1.4K]

Answer:

37 beads

Step-by-step explanation:

Given that:

Adel : Claire = 7 : 4

Let Adel be = A; &

Let Claire be = C

A: C = 7 : 4

$\dfrac{A}{C} =\dfrac{7}{4}$

7C = 4A

$C = \dfrac{4A}{7}$ --- (1)

When Adel gave 68 beads to claire, we have:

C + 68 = 25:41

$\dfrac{A}{C+68}= \dfrac{25}{41}$

25(C + 68) = 41A

C + 68 = $\dfrac{41}{25}A$

$C = \dfrac{41}{25}A - 68$ --- (2)

Equating (1) and (2) together;

$\dfrac{4 * A}{7} = \dfrac{41 *A}{25} - 68$

$\dfrac{4 * A}{7}-\dfrac{41 *A}{25} = - 68$

$\dfrac{100A - 287 A}{175} =- 68$

$\dfrac{-187A}{175} = -68$

- 187 A = 175 × (-68)

-187 A = - 11900

A = - 11900/ -187

A ≅ 64

From; $C = \dfrac{4A}{7}$

$C = \dfrac{4*64}{7}$

C = 36.57

C ≅ 37 beads

4 0

3 years ago

Pls i need this today help me

kondaur [170]

Answer:

Step-by-step explanation:

a) 4x² + 20 = 0

4x² = -20

x² = -20/4

x² = -5 = i² *5

x = √i²5

x = i√5

b) 4x² + 5 = -7

4x² = -7 - 5

4x² = - 12

x² = -12/4

x² = -3 = 3i²

x = i√3

c) x² + 4x + 20 = 0

a = 1 ; b =4 ; c =20

$x = \frac{-b+\sqrt{b^{2}-4ac}}{2a} and \frac{-b-\sqrt{b^{2}-4ac}}{2a};\\\\x = \frac{-4+\sqrt{16-4*1*20}}{2*1} and\frac{-4-\sqrt{16-4*1*20}}{2*1}\\\\=\frac{-4+\sqrt{16-80}}{2} and \frac{-4-\sqrt{16+80}}{2}\\\\=\frac{-4+\sqrt{-64}}{2} and \frac{-4-\sqrt{64}}{2}\\\\= \frac{-4+8i}{2} and\frac{-4-8}{2}$

= (-2 +4i) & -12/2

= (-2 + 4i) and (-6)

5 0

3 years ago

What comes 100 before and 100 after this number 458

maks197457 [2]

Answer:

358 and 558

Step-by-step explanation:

8 0

3 years ago

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