2 years ago

I need help with 7x8 and 2/5

Mathematics

2 answers:

masya89 [10]2 years ago

5 0

Answer:

Step-by-step explanation:

weeeeeb [17]2 years ago

5 0

Answer:

56 and 0.4

Step-by-step explanation:

1. 7 x 8 = 56 2. 2 ÷ 5 = 0.4

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an experiment consists of flipping a fair coin 4 times. What is the probability of obtaining at least one head?

Dvinal [7]

$\mathbb P(X\ge1)=1-\mathbb P(X=0)$

The probability of getting 0 heads in 4 tosses (or equivalently, 4 tails) is $\dfrac1{2^4}=\dfrac1{16}$ .

So the desired probability is

$1-\dfrac1{16}=\dfrac{15}{16}$

7 0

2 years ago

Find an equation for the line perpendicular to y=-1/2x+4 and goes through the point (-1,10)

Artemon [7]

The slope of the perpendicular line will be 2. Remember, a perpendicular slope is the negative reciprocal.

So, we can make the equation $y=2x+b$ . We need to find b, and put b in.

To find b, put in the numbers of y and x.

$10=2(-1)+b$

Solve for b:

$10=-2+b\\b=10+2\\b=12$

Now replace b in the original equation with 12 and that will be the answer:

The answer is $y=2x+12$ .

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3 years ago

What is the solution to this equation x/5=25

amid [387]

Answer:

x = 125

Step-by-step explanation:

Given

$\frac{x}{5}$ = 25

Multiply both sides by 5 to clear the fraction

x = 5 × 25 = 125

x = 125

6 0

2 years ago

Read 2 more answers

Enter your answer as a decimal.Round only your final answer to the nearest hundreth.

vladimir1956 [14]

52.35 ft^2

1/2times 9.2 times 11.9 times sin(27)

6 0

2 years ago

Write the equation of the circle graphed below.

mojhsa [17]

Answer:

As shown in picture, this circle has radius 1.5 and passes (0, 1.5)

=> According to the general form of equation of circle that has radius r and passes (a, b): (x - a)^2 + (y - b)^2 = r^2, we have:

x^2 + (y - 1.5)^2 = 1.5^2

<=>

x^2 + (y - 1.5)^2 = 2.25

Hope this helps!

6 0

2 years ago