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andrey2020 [161]
2 years ago
10

Someone help plz and thanks

Mathematics
1 answer:
mylen [45]2 years ago
5 0

Answer:

Step-by-step explanation:

Total students = 6 + 6 +8 + 4 + 2 +3 + 7 + 5 = 41

Probability of a chosen student be Physics or Chemistry or both =

\dfrac{8}{41}+\dfrac{4}{41}+\dfrac{5}{41}=\dfrac{17}{41}

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the sale tax rate in Jans town is 7.5% if she buys 3 lamps for $23.59 each and a sofa for $769.99, how much sales tax does she o
masha68 [24]
 Cost of Lamps =
23.59*3= $70.77

Sofa = $769.99
Add them 
769.99+70.77
=840.76
Percentage 
7.5/100 *840.76
= 63.057

She owes $63.057 to sales tax
4 0
3 years ago
A highway had a landslide, where 3,000 cubic yards of material fell on the road, requiring 200 dump truck loads to clear. On ano
Orlov [11]
3,000 yd3 = 200 dtl
Chapter 1: Problem Solving 17 / 21

Rates Question
12 A highway had a landslide, where 3,000 cubic yards of material fell on the road, requiring 200 dump truck loads to clear. On another highway, a slide left 40,000 cubic yards on the road. How many dump truck loads would be needed to clear this slide?
3,000 yd3 = 200 dtl
40,000 yd3 × 200 dtl = 2,667 dtl
3, 000 yd3
6 0
3 years ago
the sun shines on a flagpole, causing a shadow to be cast on the ground. the distance from the base of the pole to the tip of th
kobusy [5.1K]

Answer:

30.17feet high

Step-by-step explanation:

Given the following

the distance from the base of the pole to the tip of the shadow = 49feet (hypotenuse)

angle of elevation = 38°

Required

Height of the flagpole (opposite)

Using the SOH CAH TOA identity

Sin theta = opposite/hypotenuse

Sin 38 = H/49

H = 49sin38

H = 49(0.6157)

H = 30.17feet

Hence the flagpole is 30.17feet high

7 0
2 years ago
Edgar pay $67.86 for 7.8 pounds of fertilizer. What is the price per pound of fertilizer?
prohojiy [21]

Answer:

He pays $8.70

Step-by-step explanation:

You would do $67.86 divided by 7.8 lbs

                 

6 0
3 years ago
Solve this system of equations- x=2y-8 and 4x+y=13
rjkz [21]
(2,5)
thats what i got

8 0
3 years ago
Read 2 more answers
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