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3 years ago

WILL GIVE BRIANIEST TO CORRECT ONLY

Mathematics

1 answer:

Neko [114]3 years ago

8 0

Answer:

a) 105

b) 75

c) 105

Step-by-step explanation:

a) supplementary angles. 180-75 is 105

b) 75. same as kings ave

c) supplementary angles. also vertical angles 180-75 is 105

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Use substitution process to find x,y,and z from the equations 2x+4y+3z=14 , y+3z=11 , z=4

katen-ka-za [31]

Work backwards.

Start with z = 4.

Now deal with the middle equation

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2 years ago

Erica can run 1/6 of a kilometer her school is 3/4 of a kilometer away from her home at this this speed how long would it take e

shepuryov [24]

Answer:

4 minutes 30 seconds

Step-by-step explanation:

Given:

Erica can run 1/6 of a kilometer in one minute.

Her school is 3/4 of a kilometer away from her home.

Question asked:

How long would it take Erica to run home from school = ?

Solution:

As here distance is given and also speed is given, we will find time taken to run from home to school by using,

$Speed=\frac{Distance}{Time} \\ Time =\frac{Distance}{Speed} \\$

$=\frac{3}{4} \div\frac{1}{6} \\\\ =\frac{3}{4} \times\frac{6}{1} \\\\ =\frac{18}{4} \\ \\ =\frac{9}{2} \\ =4.5 \ minutes$

Therefore, it takes 4 minutes 30 seconds Erica to run home from school.

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2 years ago