PLS HELP PEOPLE!!!

Mathematics

1 answer:

enyata [817]2 years ago

7 0

Answer:

They used 16.4 centimeters

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Two cars leave town at the same time and travel in opposite directions. Speed of car A is 12 km/h more than car B. They are 312k

Zina [86]

Answer:

Speed of car B is 33 km/h and speed of car A is $45\,\,km/h$

Step-by-step explanation:

Let speed of car B be $x$ km/h

Speed of car A is 12 km/h more than car B.

Therefore,

Speed of car A = $(12+x)$ km/h

Distance = Speed × Time

Distance travelled by car A in 4 hours = $4(12+x)$ km = $(48+4x)$ km

Distance travelled by car B in 4 hours = $4x$ km

Also, cars A and B are 312km apart after 4 hours.

$48+4x+4x=312\\48+8x=312\\8x=264\\\\x=\frac{264}{8}\\\\x=33\,\,km/h$

Speed of car B is 33 km/h and speed of car A is $12+x=12+33=45\,\,km/h$

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2 years ago

URGENT: HELP NEEDED NOW PLEASE :(

boyakko [2]

1) -(5.8x14) = -406/5 = -81.2
2) (-1/3)(-1) = 1/3 = 0.3333333....
3) -2 + 1/4 / 1 + 1/2
-7/4 / 3/2
-1.75 / 1.5 = -7/6 = -1.166....7

What do you mean by “and”?????
Is it divided or add??
I’m only sure about the first one but tell me what and mean

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3 years ago

Help pls pls pls pls

Rufina [12.5K]

Answer:

im begging

Step-by-step explanation:

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2 years ago

Square root of 40 + square root of 90

soldier1979 [14.2K]

$\sqrt{40}=2\sqrt{10}\\\sqrt{90}=3\sqrt{10}\\\22\sqrt{10}+3\sqrt{10}=5\sqrt{10}$