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3 years ago

Help please please I really wanna pass!

Mathematics

1 answer:

galina1969 [7]3 years ago

6 0

Answer:

See below

Step-by-step explanation:

1) x = 4

2) x = 12

3) x = 45

4) x= 5.56

5) x = 35/18

6) x = 3/2

7) x = 19/3

8) x = 3/35

9) x = 47/5

10) x+4 = 17/2 so x = 9/2

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Nine less than five times a number is equal to -30.

notka56 [123]

Answer: 5x-30-9

-159

Step-by-step explanation:

-159 is the answer

6 0

2 years ago

What is the principal solution to the equation?

ikadub [295]

First step: x= ± √ 121
Second step and correct answer: x= ± 11

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2 years ago

Janelle has 5 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the

VikaD [51]

Answer:

The distance cover by him walking back is 11.25 miles

Step-by-step explanation:

Given as :

Time for Janelle to spend on training = 5 hours

The running speed of Janelle = 9 mph

The walking back with 3 mph

Let The distance for running and walking is same i.e D miles

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

∴ 5 = $\frac{D}{9}$ + $\frac{D}{3}$

Or, 5 × 9 = D + 3 D

Or, 45 = 4 D

∴ D = $\frac{45}{4}$ = 11.25 miles

Hence The distance cover by him walking back is 11.25 miles Answer

6 0

3 years ago

What is y=-x-14 y=-8x

Marina86 [1]

Substitute y in the first equation.

-8x = -x - 14
+x +x

-7x = -14
-7x/-7 = -14/-7
x = 2

Now solve for y.

y = -18(2)
y = -36

Answer: (2, -36) or y = -36 and x = 2

6 0

2 years ago

Estimate the total cost of 31 televisions at £196.50 each and 19 DVD players at £50.99 each

Gwar [14]

Answer:

Solution,

Cost of one television=£196.50

cost of 31 televisions:

 $= 196.50 \times 31 \\ = 6091.5$ 

Cost of one DVD player=£50.99

Cost of 19 DVD player:

 $= 50.99 \times 19 \\ = 968.81$ 

Now,

Total cost

= cost of 31 televisions + cost of 19 DVD player

=6091.5+968.81

=£7060.31

Hope this helps...

Good luck on your assignment..

3 0

3 years ago

Read 2 more answers