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2 years ago

Please slove step by step for both

Mathematics

2 answers:

CaHeK987 [17]2 years ago

6 0

Answer:

<h2>First Question:</h2><h3>BD = 28</h3><h2>Second Question:</h2><h3>BD = 56</h3>

Step-by-step explanation:

<h2>First Question:</h2>

BD = BC + CD

21 + 7 = 28

BD = 28

<h2>Second Question:</h2>

BD = CD - CB

73 - 17 = 56

BD = 56

Serggg [28]2 years ago

3 0

Answer:

Step-by-step explanation:

8. 21+7 = 28

9. 73-17 =56

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You deposit $100 in an account earning 4% interest compounded annually. How much will you have in the account in 10 years? Round

rosijanka [135]

Answer:

$148.02

Step-by-step explanation:

In the question

Principal = $100, rate(R) = 4% compounded annually, time(T)= 10 years

we know that the formula for compound interest

A= $P\times_(1+\frac{R}{100} )^{T}$ where A is amount

now putting values in the above formula we get

A= $100\times_(1+\frac{4}{100} )^{10}$

therefore A= $148.024428

rounding off to the nearest penny we get amount as $148.02 and compound interest will be $48.02

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2 years ago

What is the value of x in the equation 2^12 = 2^15x?

Radda [10]

Answer:

X= 1/8

Step-by-step explanation:

i got u

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2 years ago

Y = 7x + 3 <br> what is the X and Y intercepts

Neko [114]

To find the x intercept,plug a zero in for y and solve.
To find the y intercept,plug a zero in for x and solve.
y = 7x + 3
g = 7(0)+3
y = 3
(0,3)

y = 7x + 3
0 = 7x + 3
Subtract 3 from both sides.
-3 = 7x
Divide both sides by 7
-3/7 = x
(-3/7, 0)

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3 years ago

What is the y intercept of a graph containing the two points (3,1) and (7,-2)?

olasank [31]

The y intercept of a graph containing the two points (3,1) and (7,-2) is $\frac{13}{4}$

<em><u>Solution:</u></em>

Given points are (3, 1) and (7, -2)

<em><u>The equation of line in slope intercept form is given as:</u></em>

y = mx + c ------- eqn 1

Where, "m" is the slope of line and "c" is the y intercept

<em><u>Let us first find the slope of line</u></em>

The slope of line is given as:

$m = \frac{y_2-y_1}{x_2-x_1}$

Here the points are (3, 1) and (7, -2)

$(x_1, y_1) = (3, 1)\\\\(x_2, y_2) = (7, -2)$

Substituting in formula, we get

$m = \frac{-2-1}{7-3}\\\\m = \frac{-3}{4}$

To find the y intercept:

$\text{Substitute } m = \frac{-3}{4} \text{ and } (x, y) = (3, 1) \text{ in eqn 1 }$

$1 = \frac{-3}{4} \times 3 + c\\\\1 = \frac{-9}{4} + c\\\\ \text{Simplify the above equation } \\\\1 = \frac{-9+4c}{4}\\\\4 = -9 + 4c\\\\13 = 4c\\\\\text{Divide both sides by 4 }\\\\c = \frac{13}{4}$

Thus y -intercept is $\frac{13}{4}$

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3 years ago

A bag contains 5 blue, 4 red, 7 black and 2 white marbles. What is the probability of selecting a marble that is NOT white?

iogann1982 [59]

Answer:

8/9 (simplified)

Step-by-step explanation:

Total marbles = 18

Total of marbles <em>not</em> white = 16

Numerator = 16 / Denominator = 18

= 16/18

= 8/9 (simplified)

3 0

2 years ago

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