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bogdanovich [222]
3 years ago
12

write the correct Equation and Solve. Use x for the variable. The difference of four times a number and seven is thirteen​

Mathematics
1 answer:
Verizon [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Let the number be x

4times a number  =4x

The difference of four times a number and seven : 4x - 7

4x - 7 = 13

      4x = 13 + 7

      4x = 20

        x = 20/4

        x = 5

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John is driving to his office to attend a meeting. In the first 10 minutes, he covers a distance of 1 mile every minute. Then he
Georgia [21]

Answer:

The total distance cover by John is 15 min to reach his office .

Step-by-step explanation:

Given as ;

In the first 10 minutes , the distance cover is 1 miles every minutes

So, for 10 minutes , total distance cover by John = 10 × 1 = 10 miles

Again ,

John cover distance of 0.5 miles for every minutes , he travel for next 10 min

So, for next 10 min, total distance cover by John = 10 × 0.5 = 5 miles

So, The total distance cover by john = 10 miles + 5 miles = 15 miles

Hence The total distance cover by John is 15 min to reach his office . Answer

5 0
3 years ago
A cone and its dimensions are shown in the diagram. What is the volume of the cone in cubic inches?
Vinvika [58]

Answer:

The exact value of the volume is equal to

V=19\frac{397}{512}\pi\ in^{3}

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2} h

we have

D=5\frac{5}{8}\ in

convert to an improper fraction

D=5\frac{5}{8}\ in=\frac{5*8+5}{8}=\frac{45}{8}\ in

r=(45/8)/2=\frac{45}{16}\ in

h=7\frac{1}{2}\ in=\frac{7*2+1}{2}=\frac{15}{2}\ in

substitute in the formula of volume

V=\frac{1}{3}\pi (\frac{45}{16}^{2})(\frac{15}{2})=\frac{30,375}{1,536}\pi\ in^{3}

Simplify  

\frac{30,375}{1,536}=\frac{29,184}{1,536}+\frac{1,191}{1,536}=19\frac{397}{512}

substitute

V=19\frac{397}{512}\pi\ in^{3}

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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6x + x = 1 - 2

7x = -1  (divide by 7)

x = -1/7

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What is 37/4 as a mixed number
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The answer is 9 1/4
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2 years ago
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