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Rashid [163]
3 years ago
6

The odometer of the family car shows 15,951 miles. The driver noticed that this number is palindromic: it reads the same backwar

d as forward. “Curious,” the driver said to himself. “It will be a long time before that happens again.” But 2 hours later, the odometer showed a new palindromic number. How fast was the car traveling in those 2 hours?
Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
The next palindromic number is 16061, so he traveled 110 miles. 110 miles/2 hours = 55 mph.
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Y=3x^2+11x-4 and y=10x-1. solve the system of equations
Mashcka [7]
3x^2+11x-4=10x-1
3x^2+11x-10x-4+1=0
3x^2+x-3=0
Δ=1^1-4*3*(-3)=1+36=37
x1=(-1+V37)/6

x2=( -1-V37)/6
7 0
3 years ago
PLEASE HELP URGENTLY! ASAP RIGHT ANSWERS WILL BE MARKED BRAINLIEST!!!
WINSTONCH [101]

Answer:

Step-by-step explanation:

the formula for the circumference of a circle is 2rπ

the formula for the area of a circle is (r^2)π

the formula for the diameter of a circle is 2r

π=3.14

---------------------------------------------------------------

1. diameter =2r.    since diameter=24, r=12

2. circumference=2rπ.     since circumference = 314.     314=2rπ       r=49.9746

3. circumference=2rπ                                           area=(r^2)π

   since r=7, circumference=14π=43.98229      since r=7, area is 49π=153.9380

4. Since the diameter is 20 the radius is 10. so just insert it into the formulas as before:    circumference=20π=62.8318 and area=100π=314.15926

5.  the formula for the diameter is 2r=d        2(18)=d,    36=d

6. 2rπ=circumference = 2(5)π=10π=31.415926

Hope that helps :)

8 0
3 years ago
3x+4/5=7-2x Please tell me man
jekas [21]

Answer:

Exact Form:

x = 31/25

Decimal Form:

x = 1.24

Mixed Number Form:

x = 1  6/25

Step-by-step explanation:

Hope this helps

6 0
3 years ago
Read 2 more answers
In the derivation of the formula for the volume of a cone, the volume of the cone is calculated to be times the volume of the py
scZoUnD [109]

Answer:

B :it is the ratio of the area of the circle to the area of the square from a cross section.

Step-by-step explanation:

had this question on ed2020 and got it right^

5 0
3 years ago
Read 2 more answers
Explain the steps necessary to convert a quadratic function in standard form to vertex form
SIZIF [17.4K]

Answer:

See below.

Step-by-step explanation:

Here's an example to illustrate the method:

f(x) = 3x^2 - 6x + 10

First divide the first 2 terms by the coefficient of x^2 , which is 3:

= 3(x^2 - 2x) + 10

Now  divide the -2 ( in -2x) by 2 and write the x^2 - 2x in the form

(x - b/2)^2 - b/2)^2  (where b = 2) , which will be equal to x^2 - 2x in a different form.

= 3[ (x - 1)^2 - 1^2 ] + 10 (Note: we have to subtract the 1^2 because (x - 1)^2 = x^2 - 2x  + 1^2  and we have to make it equal to x^2 - 2x)

= 3 [(x - 1)^2 -1 ] + 10

= 3(x - 1)^2 - 3 + 10

= <u>3(x - 1)^2 + 7 </u><------- Vertex form.

In general form the vertex form of:

ax^2 + bx + c  = a [(x - b/2a)^2 - (b/2a)^2] + c .

This is not easy to commit to memory so I suggest the best way to do these conversions is to remember the general method.

3 0
2 years ago
Read 2 more answers
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