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Kipish [7]
3 years ago
7

Solve0.9(7x + 14) = 1.5 - (x + 2)

Mathematics
1 answer:
Triss [41]3 years ago
7 0

\\ \sf\longmapsto 0.9(7x+14)=1.5-(x+2)

\\ \sf\longmapsto 6.3x+12.6=1.5-x-2

\\ \sf\longmapsto 63x+12.6=-x-0.5

\\ \sf\longmapsto 63x+x=-0.5-12.6

\\ \sf\longmapsto 64x=-13.1

\\ \sf\longmapsto x=\dfrac{-13.1}{64}

\\ \sf\longmapsto x=0.2

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Larry rides his bike at a rate of 8.8 inches per second. About how m any miles per hour can Larry ride his bike?
sveta [45]

Larry rides his bike 0.5 miles per hour

<em><u>Solution:</u></em>

Given that Larry rides his bike at a rate of 8.8 inches per second

To find: Speed in miles per hour

So we have to convert 8.8 inches per second to miles per hour

<em><u>Use the conversion factor</u></em>

1 \text{ inch } = \frac{1}{63360} \text{ mile }

1 \text{ second } = \frac{1}{3600} \text{ hours }

<em><u>Convert 8.8 inches per second to miles per hour</u></em>

8.8 \frac{\text{inches}}{\text{second}} = 8.8 \times \frac{1}{63360} \times 3600 \times \frac{\text{miles}}{\text{hour}}

8.8 \frac{\text{inches}}{\text{second}} = 8.8 \times 0.00001578282 \times 3600 \times \frac{\text{miles}}{\text{hour}}\\\\8.8 \frac{\text{inches}}{\text{second}} = 0.5 \frac{miles}{hour}

Thus Larry rides his bike 0.5 miles per hour

5 0
3 years ago
The volume of a cone-shaped hole is 1471 ft. If the hole is 9 ft deep, what is the radius of the hole
Ainat [17]

The volume πr^2*height/3=1471

π*r^2=1471/9*3

π*r^2=490.33(I'm rounding all my numbers to the hundredths digit)

r^2=490.33/3.14(taking 3.14 for pi)=about 156.16

r= sqrt 156.16=about 12.5

Again this answer is not precise but I rounded everything to the hundredths digit because pi is never ending. I hope it helped!

6 0
3 years ago
9 7/8 - ( -2 4/5 - 1/2)
Viefleur [7K]

Answer:

9 7/8 - ( -2 4/5 - 1/2)  = 13.175

Step-by-step explanation:

Hope this is correct and helps.

3 0
3 years ago
If a ratio of 2 to 5 how many people are the ratio of 2 out of 210 people
Wewaii [24]
I'm pretty sure it is 105 people

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3 years ago
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kipiarov [429]

Answer:

so its will be the equal number

Step-by-step explanation:

pls dont get mad if I'm wrong I tried :)

3 0
3 years ago
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