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3 years ago

6

Help me plz these are my last points and my las try the answer i did said its wrong

2 answers:

irga5000 [103]3 years ago

4 0

Answer:

b=8h, not 8/h

tell me if it help

Butoxors [25]3 years ago

3 0

Answer:

i will give away free points and pls add me so i can give you points

Step-by-step explanation:

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How to do linear equations 27, 28,28,30

Mekhanik [1.2K]

#27.
First cross multiply
2 (2a-3) = 3 (a-1)
next use the distribute property on both sides
4a - 6 = 3a - 3
combine like terms, subtract 3a from both sides and add 6 to both sides
a = 3

#28
cross multiply
3x = 4, then divide both sides by 3
x = 4/3

#30
add 1/4 to both sides
3/x = 1/2 + 1/4, find a common denominator for the right side fractions
3/x = 2/4 + 1/4 = 3/4
therefore, x = 4

6 0

3 years ago

Which of these is the best definition of an ellipse?

MArishka [77]

Answer:

I think it's B.

Step-by-step explanation:

Sorry if I'm wrong :/

4 0

3 years ago

Read 2 more answers

-<br> Evaluate the following expression <br> 22 - 53 +3

astraxan [27]

Answer:

-28

Step-by-step explanation:

Remember the order of operations: pemdas (<u>p</u>arenthesis, <u>e</u>xponent, <u>m</u>ultiply, <u>d</u>ivide, <u>a</u>dd, <u>s</u>ubtract). Just simplify the expression.

22 - 53 + 3

(22-53) + 3

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5 0

3 years ago

Read 2 more answers

A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a speed of 6

Burka [1]

Answer:

Tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

Step-by-step explanation:

Given : In the figure attached, Length of girl EC = 4 ft

Length of street light AB = 25 ft

Girl is moving away from the light with a speed = 6 ft per sec.

To Find : Rate ( $\frac{dw}{dt}$ ) of the tip (D) of the girl's shadow (BD) moving away from th

light.

Solution : Let the distance of the girl from the street light is = x feet

Length of the shadow CD is = y feet

Therefore, $\frac{dx}{dt}=6$ feet per sec. [Given]

In the figure attached, ΔAFE and ΔADE are similar.

By the property of similar triangles,

$\frac{x}{21}=\frac{x+y}{25}$

25x = 21(x + y)

25x = 21x + 21y

25x - 21x = 21y

4x = 21y

y = $\frac{4x}{21}$

Now we take the derivative on both the sides,

$\frac{dy}{dt}=\frac{4}{21}\times \frac{dx}{dt}$

= $\frac{4}{21}\times 6$

= $\frac{8}{7}$

≈ 1.14 ft per sec.

Since w = x + y

Therefore, $\frac{dw}{dt}= \frac{dx}{dt}+\frac{dy}{dt}$

$\frac{dw}{dt}=6+1.14$

= 7.14 ft per sec.

Therefore, tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

3 0

3 years ago

In order to graduate from Ohio, you need to earn 3 points on an Algebra EOC or score remediation

White raven [17]

so the picture is not loading....

3 0

3 years ago