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3 years ago

Selena’s Work

Mathematics

2 answers:

PtichkaEL [24]3 years ago

4 0

Answer:

selena is correct

Step-by-step explanation:

galben [10]3 years ago

4 0

Answer:

its b:) i jsut did the quiz

Step-by-step explanation:

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sam deposits 10000 into a savings account that earns 4.25% interest compounded annually. What will be the total amount in the ac

mote1985 [20]

Answer:

With the compound interest calculator, you can accurately predict how profitable ... The total compound interest is $3,926.8. ... Note that in the case where you make a deposit into a bank (e.g., put money in your savings account), you have, ... You invest $10,000 for 10 years at the annual interest rate of 5%.

Step-by-step explanation:

7 0

3 years ago

Tan 0 = -2, 0

julsineya [31]

Answer:

Sin O = $\frac{2\sqrt{5} }{5}$

Cos O = $-\frac{\sqrt{5} }{5}$

Cot O = $-\frac{1}{2}$

Csc O = $\frac{\sqrt{5} }{2}$

Sec O = $-\sqrt{5}$

Step-by-step explanation:

Do you know the definitions of all the trig functions? If not, you need to memorize them. Also, you need to memorize which functions are positive in each quadrant. All functions are positive in quad I, sine and reciprocal are positive in quad II, tan and reciprocal are positive in quad III, and cos and reciprocal are positive in quad IV. OK?

Tan of an angle is opposite side/adjacent side of a right triangle

If the tan O = - 2. let the opp. side = 2 and adjacent side = 1. Then the hypotenuse = $\sqrt{2^{2} + 1^{2} } = \sqrt{4 + 1} = \sqrt{5}$

Sine is positve and equals opp/hyp = $\frac{2}{\sqrt{5} } = \frac{2\sqrt{5} }{5}$

Cos is negative and equals adj/hyp = $-\frac{1}{\sqrt{5} } = -\frac{\sqrt{5} }{5}$

Cot is negative and is the reciprocal of the tan or adj/opp = $\frac{-1}{2}$

Csc is positive and is the reciprocal of the sine or hyp/opp = $\frac{\sqrt{5} }{2}$

Sec is negative and is the reciprocal of the cos or hyp/adj = $-\sqrt{5}$

5 0

3 years ago

Simplify:<br><br> 5x+2(3−2x)+7<br><br><br> x + 13<br><br> 12x<br><br> 9x + 13

katrin [286]

Answer:

x+13

Step-by-step explanation:

The answer would be 1 or uh.. x+13

6 0

3 years ago

Which of the following represents the factorization of the polynomial below?<br> 2x2 +11x +5

beks73 [17]

Answer:

(2x + 1)(x + 5)

Step-by-step explanation:

2x² + 11x + 5 =

= 2x² + 10x + x + 5

= 2x(x + 5) + (x + 5)

= (2x + 1)(x + 5)

3 0

3 years ago

The cross section of rectangular prism A measures 1. 5 units by 1 unit. The cross section of triangular prism B has a base that

dmitriy555 [2]

Volume of an object is the measure of the space that object occupies. The correct comparison of volume of considered objects is: Volume of A = Volume of B

<h3>How to find the volume of a right rectangular prism?</h3>

Suppose that the right rectangular prism in consideration be having its dimensions as 'a' units, 'b' units, and 'c' units, then its volume is given as:

$V = a\times b \times c \: \rm unit^3$

<h3>How to find the volume of right triangular prism?</h3>

It can be obtained by multiplying the cross sectional triangle's area to the height of the considered triangular prism.

Thus, for the given case, we get:

Volume of rectangular prism:

Its dimensions are 1.5 units by 1 units by 1.81 units

Thus, $V_A = 1.5 \times 1 \times 1.81 = 1.5 \times 1.81 = 2.715 \: \rm unit^3$

Volume of triangular prism:

Its cross section triangle has base of 2 units and height of 1.5 unit. The height of the prism is equal to the height of the considered rectangular prism = 1.81 units,

Thus,

$V_B = \text{Area of triangular cross-section} \times 1.81 = \dfrac{1}{2} \times 2\times 1.5 \times 1.81 \: \rm unit^3\\V_B = 2.715\: \rm unit^3\\\\$

Thus, we get $V_A = V_B$ ((Volume of A = Volume of B)

Learn more about volume of triangular prism here:

brainly.com/question/8565162

6 0

2 years ago