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12345 [234]
3 years ago
7

PLS HELPpslapskodkdosnsplspslpsl

Mathematics
2 answers:
Sever21 [200]3 years ago
7 0
I believe it is c all the others don’t sound right lemme know if i was right :)
Effectus [21]3 years ago
6 0
It is c! you had it right !!
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10 (4p - 2k)(3)<br> In distributive property?
NeTakaya

Answer:

10 ( 12p - 6k)

Step-by-step explanation:

4p x 3 = 12p

2k x 3 = 6k

you cannot subtract 12p and 6k bcuz they do not have the same variables.

5 0
3 years ago
A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream. What is the rate of
nikitadnepr [17]
<h3>Rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr</h3><h3><u>Solution:</u></h3>

Given that,

A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream

Therefore,

Upstream distance = 165 km

Upstream time = 3 hours

<h3><u>Find upstream speed:</u></h3>

speed = \frac{distance}{time}\\\\speed = \frac{165}{3}\\\\speed = 55

Thus upstream speed is 55 km per hour

Downstream distance = 510 km

Downstream time = 6 hours

<h3><u>Find downstream speed:</u></h3>

speed = \frac{510}{6}\\\\speed = 85

Thus downstream speed is 85 km per hour

<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then</u></em>

Speed downstream = u + v km/hr

Speed upstream = u - v km/hr

Therefore,

u + v = 85 ----- eqn 1

u - v = 55 ----- eqn 2

Solve both

Add them

u + v + u - v = 85 + 55

2u = 140

u = 70

<em><u>Substitute u = 70 in eqn 1</u></em>

70 + v = 85

v = 85 - 70

v = 15

Thus rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr

3 0
3 years ago
Write (2x10) + (9 x 1) + (7 x 0.10 ) + (8 x 0.001) in standard form.
bonufazy [111]

Answer:

hi

Step-by-step explanation:

3 0
3 years ago
To get the color dove-white, Ken mixed black paint and white paint in a ratio of 5:3. He used 20 gallons of black paint. How muc
Over [174]
He used 12 gallons of white paint.

Because 20 divided by 5 = 4. Meaning that 4 gallons is one part.

4 x 5 = 20
4 x 3 = 12
4 0
3 years ago
Read 2 more answers
Please help me with this
Sever21 [200]

Answer:

<u>140 in^2</u>

Step-by-step explanation:

Finding the volume

Length = 4

Width = 7

Height = 5

V = w h l = 7 x 5 x 4 = 140 in^2

7 0
2 years ago
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