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3 years ago

A bag contains red and blue marbles, such that the probability of drawing a blue marble is 37.5%

Mathematics

1 answer:

Vanyuwa [196]3 years ago

4 0

I think answer should be d. Please give me brainlest let me know if it’s correct or not okay thanks bye

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The difference between the product of 4 and a number 6

Mice21 [21]

Answer:

If we call our unknown value x, then we can say that

The "product of 4 and a number" is 4x

The "difference between" 4x and 6 is 4x - 6

Step-by-step explanation:

8 0

3 years ago

Can someone please explain y=mx+b

lana [24]

$y=mx+b$ is slope-intercept form, which is a way of writing an equation for a line.

In this equation, $m$ represents the slope and $b$ represents the y-intercept.

$x$ and $y$ are the coordinates of a point on the resulting line.

Here are some examples:

$y=3x+2$

$y=-2x-4$

$y=8x-1$

$y=-7x+5$

7 0

3 years ago

7,,,,,,,,,,,,,,,,,,,,please help

Goryan [66]

Answer:

Step-by-step explanation:

The given expression is

$\frac{2^{\frac{11}{2} }\times 2^{-7}\times 2^{-5}}{2^3\times 2^{\frac{1}{2} }\times 2^{-10}}$

Recall and use

$a^m\times a^n=a^{m+n}$

$\frac{2^{\frac{11}{2} -7-5}}{ 2^{3+\frac{1}{2} -10}}$

$\frac{2^{-\frac{13}{2}}}{ 2^{-\frac{13}{2}}}$

Same bases are dividing, so we write one base and subtract the exponent.

$2^{-\frac{13}{2}+\frac{13}{2}}$

$2^0=1$

8 0

3 years ago

Find the probability.

kvv77 [185]

Answer:

7/36

Step-by-step explanation:

1 die has 6 faces

When two dice are rolled, the total number of outcomes

= 6 × 6 = 36

The Probability of having(5) =

(1 & 4), (2 & 3) , ( 3 & 2), (4 & 1)

= 4

The probability of having (10) =

(5 & 5), (4 & 6) , ( 6 & 4)

= 3

The probability that the score on the dice is either 5 or 10.

P(5) + P(10)

= 4/36 + 3/36

= 7/36

8 0

3 years ago

How to solve this ? I am not sure pls if you know the answer answer it I really neeed it for marks

xz_007 [3.2K]

Answer:

L.S = R.S ⇒ Proved down

Step-by-step explanation:

Let us revise some rules in trigonometry

sin²α + cos²α = 1
sin2α = 2 sin α cosα
cscα = 1/sinα

To solve the question let us find the simplest form of the right side and the left side, then show that they are equal

∵ L.S = csc2α + 1

→ By using the 3rd rule above

∴ L.S = $\frac{1}{sin2\alpha}$ + 1

→ Change 1 to $\frac{sin2\alpha}{sin2\alpha}$

∴ L.S = $\frac{1}{sin2\alpha}$ + $\frac{sin2\alpha}{sin2\alpha}$

→ The denominators are equal, then add the numerators

∴ L.S = $\frac{1+sin2\alpha}{sin2\alpha}$

∵ R. S = $\frac{(sin\alpha+cos\alpha)^{2} }{sin2\alpha}$

∵ (sinα + cosα)² = sin²α + 2 sinα cosα + cos²α

∴ (sinα + cosα)² = sin²α + cos²α + 2 sinα cosα

→ By using the 1st rule above, equate sin²α + cos²α by 1

∴ (sinα + cosα)² = 1 + 2 sinα cosα

→ By using the 2nd rule above, equate 2 sinα cosα by sin2α

∴ (sinα + cosα)² = 1 + sin2α

→ Substitute it in the R.S above

∴ R. S = $\frac{1+sin2\alpha}{sin2\alpha}$

∵ L.S = R.S

∴ csc 2α + 1 = $\frac{(sin\alpha+cos\alpha)^{2} }{sin2\alpha}$

4 0

3 years ago