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3 years ago

Im in middle school help me

Mathematics

2 answers:

user100 [1]3 years ago

6 0

Answer:

148.5 cm

Step-by-step explanation:

Each blank represents a student, from shortest to tallest.

_, _, _, _

Kylie is the tallest.

_, _, _, Kylie

Jessica is the shortest.

Jessica, _, _, Kylie

Elly is taller than Jessica, but shorter than Elizabeth.

Jessica, Elly, Elizabeth, Kylie

Elizabeth is second tallest.

The heights in order from shortest to tallest are

146.9 cm, 148.2 cm, 148.5 cm, 148.75 cm

Answer: 148.5 cm

Lorico [155]3 years ago

3 0

Answer:148.5

Step-by-step explanation:

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Does anyone know this and can help please

adelina 88 [10]

Answer:

$\frac{y^7z^3}{x}$

Step-by-step explanation:

When variables have negative exponents, switch their positions.

$\frac{x^{-1}y^7}{z^{-3}}=\frac{y^7z^3}{x}$

5 0

3 years ago

The derivative of 1/x? I'm blanking on my simple rules here; thanks, actually thought of that right after i asked this whats the

mote1985 [20]

D(1/x)/dx= d(x^-1)/dx
= -x^-2

the derivatives of the two cases you mentioned is as follows:
(I) f(x)=k/x
d{f(x)}/dx= k×(-x^-2)
= -kx^-2

(ll) f(x)=x/k
d{f(x)}= d(x/k)/dx
= 1/k

you can just simply take out the constant from the derivative and multiply it to the final answer of the derivative of the given function.

6 0

4 years ago

Please help I need help with this badly asap !

evablogger [386]

Answer:

The third option

Step-by-step explanation:

It perfectly represents -24/3.

7 0

3 years ago

What is x, y and z? show your work

Bas_tet [7]

Answer: z = -3 , y = 2 , x = 2

8 0

3 years ago

2 lb 6oz = ________lb

krok68 [10]

2.6 lb

Hope this helps!

5 0

4 years ago

Im in middle school help me​

Im in middle school help me