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3 years ago

HELP PLZ, im doing a quiz and i need answers!

Mathematics

2 answers:

igor_vitrenko [27]3 years ago

6 0

Answer:

x= 38 degrees

Step-by-step explanation:

angle 2 and angle 3 is a straight line which is 180 degrees.

So,

4x + 28 = 180

4x = 180 -28

4x = 152

x= 152/4

x=38

KonstantinChe [14]3 years ago

4 0

Answer:

38°

Step-by-step explanation:

3 and 2 would have to equal 180 in total, so

if 3 is 28 then 4x=180-28=152

4x=152

152/4 is equal to 38,

So x=38

To check: 38*4=152 ; 152+28=180

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What is 1/3 of 21, 2/5 of 40 4/7 of 280

Lubov Fominskaja [6]

$\frac{1}{3} \times 21=\frac{21}{3}=\frac{7 \times 3}{3}=7 \\ \\
\frac{2}{5} \times 40=\frac{2 \times 40}{5}=\frac{2 \times 8 \times 5}{5}=2 \times 8=16 \\ \\
\frac{4}{7} \times 280=\frac{4 \times 280}{7}=\frac{4 \times 40 \times 7}{7}=4 \times 40=160$

7 0

3 years ago

Read 2 more answers

12-8.067 please help

Gekata [30.6K]

Answer:

Hope this is hepl full

3.933

Step-by-step explanation:

12.000

-8.067

3.933

6 0

3 years ago

Tell the error and leave if you disagree or agree.

Musya8 [376]

Answer:

Step-by-step explanation:

9. disagree;

error: he should have divided 60 by 4, not subtracted. So the correct answer is x = 15.

10. disagree;

error: it should be 3x + 2 = 127 (opposite angles)

so x = 125/3

8 0

3 years ago

Two cities are 210 km apart. A train traveled this distance in 4 2/3 hours and then made the return trip at a speed of 50 2/5 km

AveGali [126]

$4 \frac{2}{3}= \frac{14}{3}$

So, $\frac{210km}{ \frac{14}{3}hr }= 45km/h$

$50 \frac{2}{5} = \frac{252}{5}$

So, $\frac{252}{5}/45= 1.12$ times greater on the return trip.

7 0

3 years ago

Pleaseeeeee solveee 25 points pleaze help geometry

tatiyna

Answer:

(-3/2, 6)

Step-by-step explanation:

(-3,8) (6,-4)

As we move along the line segment with endpoints (-3,8) and (6,-4) from (-3,8) to (6,-4) x increases by 9 units (from -3 to 6) and y decreases by -12 units (from 8 to -4).

for ratio of 1:5

Since 1+5=6, the point we are looking for is 1/6 of the way from (-3,8) to (6,-4).

So, the desired point is

(-3 + (1/6)(9), 8 - (1/6)(12) )

= (-3 + 3/2 , 8 - 2)

= ( (-6 + 3)/2, 6)

= (-3/2, 6)

for map reference see the image below

8 0

3 years ago