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3 years ago

1. Simplify 4/2 +72 - 3N2 (1 point) O 2/8 O 8/2 O 86 0 68

Mathematics

1 answer:

viktelen [127]3 years ago

4 0

Step-by-step explanation:

4√2+ 7√2 - 3√2 = (4 + 7 - 3)√2 = 8√2

Topic: Indices and Surds

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WHAT IS S=2PIR^2+2PIRH SOLVE FOR H

grigory [225]

$\\~\qquad\quad S\ =\ 2PIR^2+2PIRH\\\underline{-2PIR^2\qquad-2PIR^2\qquad\quad\ }\\\\ S-2PIR^2=2PIRH\\\\ 2PIRH\ =\ S-2PIR^2\\\underline{ :(2PIR)\qquad :(2PIR)}\\\\\\ H=\dfrac{S-2PIR^2}{2PIR}\\\\\\ H=\dfrac{S}{2PIR}-\dfrac{2PIR^2}{2PIR}\\\\\\ H=\dfrac{S}{2PIR}-R$

or:

$\\~\qquad\quad S\ =\ 2PIR^2+2PIRH\\\\~\qquad\quad S\ =\ 2PIR(R+H)\\\underline{:(2PIR)\qquad :(2PIR)}\\\\\\~\ \ \dfrac{S}{2PIR}\ =\ R+H\\\\\\ \dfrac{S}{2PIR}-R=H\\\\\\ H=\dfrac{S}{2PIR}-R$

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4 years ago

Richard was earning $10/hr working for Diane’s landscaping company. Diane said that productivity was decreasing, so everyone had

pentagon [3]

Answer:

Richard is making $9.6 per hour now

Step-by-step explanation:

Given:

Initial amount Richard was earning = $10/hr

Due to lass in productivity 20% pay was cut

Amount Richard was earning after 20% pay cut = $8/hour.

After few again due to increase in productivity Diane gave a 20% raise.

To Find:

How much is Richard making now = ?

Solution:

Let the amount that Richard is making now be x

Then

x = 8+ 20% of 8

x = $8 + \frac{20}{100} \times 8$

x = $8 + 0.2 \times 8$

x = $8 + 1.6$

x = 9.6

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3 years ago

What is the product of 45 and 23

nexus9112 [7]

Product means multiplication so 45 x 23 = 1035

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3 years ago

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Write a real problem you could answer by solving the equation -8x+60=28

tankabanditka [31]

Bob found out that he can dig 8 inches down every minute. If he wants to put a 5 foot stick in the hole with 28 inches showing, how long does he have to dig?

(so to solve you convert 5 feet to 60 inches then do the equation -8x+60=28 then you add 8x to both sides, subtract 28 then divide by 8 leaving you with 4 minutes)

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3 years ago

Some help would be great, also giving brainliest.

Harrizon [31]

The area of the shaded region would be 64m²

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3 years ago