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3 years ago

Solve 7(-1 + 4x) – 12x = 5. Check your solution.

Mathematics

2 answers:

jek_recluse [69]3 years ago

5 0

The answers is 3/4 and if it’s in decimal form it will be 0.75

Rzqust [24]3 years ago

3 0

Answer:

x= $\frac{3}{4}$ or 0.75

Step-by-step explanation:

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You and a friend start riding bikes toward

Setler [38]

Answer:

1.5 hours

I traveled farther

2 miles

Step-by-step explanation:

$\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}$

My speed

$\dfrac{2\dfrac{1}{6}}{\dfrac{1}{4}}=\dfrac{\dfrac{13}{6}}{\dfrac{1}{4}}=\dfrac{26}{3}\ \text{mph}$

Speed of my friend

$7\dfrac{1}{3}=\dfrac{22}{3}\ \text{mph}$

Time passed for both me and my friend will be equal if we start at the same time and the combined distance covered by both of us will be 24 miles. Let $t$ be the time taken to meet

$\text{Distance}=\text{Speed}\times\text{Time}$

$\dfrac{26}{3}t+\dfrac{22}{3}t=24\\\Rightarrow \dfrac{48}{3}t=24\\\Rightarrow 16t=24\\\Rightarrow t=\dfrac{24}{16}\\\Rightarrow t=1.5\ \text{hours}$

So, we meet each other after 1.5 hours.

Distance traveled by me

$\dfrac{26}{3}\times 1.5=13\ \text{miles}$

Distance traveled by my friend

$\dfrac{22}{3}\times 1.5=11\ \text{miles}$

So, I traveled farther by $13-11=2\ \text{miles}$ .

7 0

3 years ago

Help (this for a friend) a 62.1 b 117.4 c 122.1 d 164.5

kramer

Answer:

c. 122.1 cm

Step-by-step explanation:

so l * w + $\frac{\pi r^2}{2}$

since 6 cm is the diameter

6/2 = 3

the radius (or r) is 3

so 18 * 6 + $\frac{3.14 * 3*3}{y}$

108 + $\frac{3.14*9}{y}$

108 + $\frac{28.26}{2}$

108 + 14.13 = 122.13

simplified: 122.1 cm

hope this helps:)

4 0

2 years ago

Read 2 more answers

What is the circumference of the circle in terms of pi? The radius is 2.2

klemol [59]

We will use formula for circumference of circle:
lets name it as O

O = 2*r * pi

when we express r in this formula we get:

O = 2*2.2*pi
O = 4.4*pi

From this we can see that for given radius, answer is 4.4. The formula only depends on pi and that is what "in terms of pi" means.

6 0

3 years ago

Read 2 more answers

Lisa's weekly pay increases from $525 to $546 Calculate her percentage pay increase.

Lana71 [14]

546 - 525 = 21

21 is 4% of 525.

Lisa gained a 4% pay increase.

6 0

3 years ago

What is -12.4 + 9.2 + +1

Sveta_85 [38]

Your answer would be -2.2