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3 years ago

8

An object is propelled vertically upward with an initial velocity of 84 feet per second. The height h (in feet) of the object af

ter a seconds is given by h(t)=-16+ 76t. After how many seconds will the object strike the ground?

1 answer:

Ray Of Light [21]3 years ago

7 0

Answer:

gh

Step-by-step explanation:

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Clara lends half her collection of formal attires to her sister, Susan. Clara then buys four more attires. If she has 12 attires

alukav5142 [94]

Answer:

16

Step-by-step explanation:

Number of attires Clara has initially = x

lends half her collection of formal attires to her sister

Attires remaining after lending = Number of attires Clara has initially - attires she lent her sister

= x - 1/2x

= 1/2x

Clara then buys four more attires

= 1/2x + 4

If she has 12 attires now

12 = 1/2x + 4

12 - 4 = 1/2x

8 = 1/2x

x = 8 ÷ 1/2

= 8 × 2/1

= 16

x = 16

Number of attires Clara has initially = x = 16

6 0

3 years ago

Y=x+12 please answer quickly and plus i need 20 characters<br>

snow_tiger [21]

Answer:

I do not fully know your question, but your slope is m=1, your y-intercept is 12, and your x-intercept would be (-12,0). I hope this helps. Try to reconstruct your question next time.

5 0

3 years ago

Cho khối chóp có diện tích đáy B=3 và chiều cao h=4. Thể tích của khối chóp đã cho bằng

lyudmila [28]

Answer:

D. 4

Step-by-step explanation:

$V =\frac{1}{3}Bh=\frac{1}{3}.3.4=4$

4 0

3 years ago

Write the given expression as a single trigonometric function.

tatiyna

Answer:

Just did it, had a good guess.

Step-by-step explanation:

6 0

3 years ago

(x^2y^3) = (xy^a)^b

Rainbow [258]

Answer:

C. $\frac{3}{2}$

Step-by-step explanation:

To find the value f b, we need to compare the exponents.

The given exponential equation is:

$( {x}^{2} {y}^{3} )^{3} = ( {x} {y}^{a} )^{b}$

Recall and apply the following rule of exponents.

$( {x}^{m} )^{n} = {x}^{mn}$

We apply this rule on both sides to get:

${x}^{2 \times 3} {y}^{3 \times 3} = {x}^{b} {y}^{ab}$

Simplify the exponents on the left.

${x}^{6} {y}^{9} = {x}^{b} {y}^{ab}$

Comparing exponents of the same variables on both sides,

$b = 6 \: and \:\: ab = 9$

$\implies \: 6b = 9$

Divide both sides by 6.

$b = \frac{9}{6}$

$b = \frac{3}{2}$

4 0

3 years ago