3 years ago

The challenge one on the other one couldn’t see so I made another photo lol plz help

Mathematics

1 answer:

Natalka [10]3 years ago

8 0

Drawing an odd number from a bag, when the bag is full of even numbers

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Calculate the size of ?

LUCKY_DIMON [66]

Answer:

p=122 q=80 r=80

Step-by-step explanation:

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3 years ago

4. x^2+13x=-42

Mrrafil [7]

$x^2+13x=-42\ \ \ |+42\\\\x^2+13x+42=0\\\\x^2+6x+7x+42=0\\\\x(x+6)+7(x+6)=0\\\\(x+6)(x+7)=0\iff x+6=0\ \vee\ x+7=0\\\\x=-6\ \vee\ x=-7$

Anaswer: <span>a. x = -6 or x = -7</span>

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3 years ago

If sin 20 degree=a and cos20 degree=b then which of the following represents the correct value of sin 70 degree in terms of a an

Scorpion4ik [409]

ANSWER

3) b

EXPLANATION

Given that:

$\sin(20 \degree) = a$

and

$\cos(20 \degree) = b$

Recall that the sine and cosine functions are equal for complementary angles.

This implies that,

$\sin(70 \degree) = \cos(20 \degree)$

$\sin(70 \degree) = b$

5 0

3 years ago

Assume the annual day care cost per child is normally distributed with a mean of $9000 and a standard deviation of $1000. What

Tpy6a [65]

Answer:

65.54% (nearest hundredth)

Step-by-step explanation:

Given:

$\sf \mu=9000$

$\sf \sigma=1000$

$\sf X \sim N(\mu, \sigma^2)\implies X \sim N(9000,1000^2)$

P(X > 8600) = 1 - P(X ≤ 8600)

= 1 - 0.3445782584

= 0.6554217416

= 65.54%

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2 years ago

Three friends go grocery shopping together and each buys same kind of oranges. Lamar buys 2 pounds and pays 7.00 Enrico buys 3 p

xenn [34]

Answer: B

Step-by-step explanation:

8 0

3 years ago

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