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3 years ago

The formula for the area of a rhombus is A= 1/2d1d2, where d1 and d2 are the length of the diagonals

Mathematics

1 answer:

Elodia [21]3 years ago

7 0

Answer:

Didn't you mean A = (1/2)d1d2 ?

If so, clear out the fraction by mult. both sides of the eqn by 2:

2A = d1*d2

Now isolate d1 by div. both sides of this result by d2:

------ = d1 (answer)

Step-by-step explanation:

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Simplify: (x - 8) (x + 8) *

padilas [110]

Step-by-step explanation:

(x - 8) (x + 8) = x² - 64

because

x² + 8x - 8x - 64

(a⁵)^-1 = 1/(a⁵)

that is the definition of a negative exponent. it means 1/...

3 0

2 years ago

Find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be

kvasek [131]

The answer is 4+8+16+32+64+128+256+512+1024: This is equivalent to 2044

4 0

3 years ago

Read 2 more answers

Given the slope is -5 and the y-intercept is -2, what is the equation of the line in slope-intercept form? A y = 5x + 2 B y = -5

Law Incorporation [45]

Answer:

B. y = -5x -2

Step-by-step explanation:

Fill in the given values in the form ...

y = (slope)x + (y-intercept)

y = -5x +(-2)

y = -5x -2 . . . . simplify; matches choice B

8 0

3 years ago

if f(1) = -5 and f(n) = f(n-1) +7, find the first four terms and the common difference of the sequence

Alex_Xolod [135]

Answer:

- 5, 2, 9, 16 and d = + 7

Step-by-step explanation:

to obtain the first four terms substitute n = 2, 3, 4 into the recursive formula

f(1) = - 5 ← given

f(2) = f(1) + 7 = - 5 + 7 = 2

f(3) = f(2) + 7 = 2 + 7 = 9

f(4) = f(3) + 7 = 9 + 7 = 16

common difference d = 16 - 9 = 9 - 2 = 2 - (- 5) = 7

6 0

3 years ago

You spin each spinner once. You get $50 if you spin a 2 and a vowel. You get $25 if you spin a 2 and a consonant. You get $5 if

Tom [10]

The expected value of the game is $8.75.

----------------------

The expected value is the <u>sum of each outcome multiplied by it's probability</u>.
A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

The probability of spinning a 2 and a vowel is: $\frac{1}{4} \times \frac{2}{8} = \frac{2}{32}$ .
Thus, $\frac{2}{32}$ probability of getting $50.

The probability of spinning 2 and a consonant is: $\frac{1}{4} \times \frac{6}{8} = \frac{6}{32}$

Thus, $\frac{6}{32}$ probability of getting $25.

The probability of spinning 1 and a vowel is: $\frac{3}{4} \times \frac{2}{8} = \frac{6}{32}$ .
Thus, $\frac{6}{32}$ probability of getting $5.