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SpyIntel [72]
2 years ago
15

I need help on number 8

Mathematics
1 answer:
ehidna [41]2 years ago
7 0

Answer:

y=4x

Step-by-step explanation:

y=mx+b is our frame equation for a linear function.

b=the y intercept, or when the line crosses the y axis, whenever x=0, so in this chart it is (0,0), b=0

y=mx+0

m= the slope, to find m you can either use the slope formula or plug in a point and solve for m

8=m(2) + 0

m=4

we don't need to put 0 in our final answer because it doesn't change anything

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How to substitute x=-2 and x=5 into 2x^2+6-20=0 to check my work
Komok [63]
First answer (x=-2)
...
(2)[(-2)^2]+6-20
2(4)+6-20
8+6-20
14-20
<em>-6 (answer)
</em><em>
</em><em />Second answer (x=5)
...
(2)[(-5)^2]+6-20
2(25)+6-20
50+6-20
56-20
<em>36 (answer)
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4 0
3 years ago
In a two-digit number, the tens digit is 5 less than the units digit. The number itself is five more than three times the sum of
Luden [163]

Given:

In a two-digit number, the tens digit is 5 less than the units digit.

The number itself is five more than three times the sum of its digits.

To find:

The number.

Solution:

Let the two digit number is ab. So,

ab=10a+b

Tens digit is 5 less than the units digit.

a=b-5       ...(i)

The number itself is five more than three times the sum of its digits.

10a+b=3(a+b)+5

10a+b=3a+3b+5

10a+b-3a-3b=5

7a-2b=5          ...(ii)

Using (i) and (ii), we get

7(b-5)-2b=5

7b-35-2b=5

5b=5+35

5b=40

b=8

Putting b=8 in (i), we get

a=8-5

a=3

Therefore, the required number is 38.

5 0
2 years ago
Read 2 more answers
Can someone help me with this
Anon25 [30]

Answer:

1] x=4.21

2] 52.5

3] 3.82

4] 38.73

5] 32.005

6] 31.21

Step-by-step explanation:

8 0
2 years ago
It is known triangles abc is congruent to def . If AB=5 and BC=10, AC=8 and DF=2x-6 solve for x.
Pepsi [2]
So df = 8 so then 2x-6=8 which means that x is 7
5 0
2 years ago
The sum of two consecutive integers is 145145. find the two integers.
Serhud [2]
1st integer: x
2nd integer: x+1 

Add them up: 2x+1= 145145 
2x= 145146
x=72,573 

Answer; 
1st integer: 72573
2nd integer; 72,574 

Rate high and send a personal message if you want more help with math. 
6 0
2 years ago
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