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maksim [4K]
4 years ago
6

Evaluate the following for x = 5 and y=4. 79 - 4x

Mathematics
2 answers:
denis-greek [22]4 years ago
4 0
The answer is 59 because x=5 and that means you do 4 times 5 getting you 20, and 79-20 equals 59
notka56 [123]4 years ago
3 0
The answer is 59. First you multiply 4 by 5 (20), then subtract 20 from 79 (59).
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Round 43,276 to the nearest 100
bezimeni [28]

Answer:

43,300

Step-by-step explanation:

Starting with 2 since its in the hundredths and going over one place to the tenths, we see 7 <em>is </em> greater than 5 so we make the 2 a 3 and replace everything after with 0's

43,300!!

4 0
3 years ago
determine the value of m and n for mx^3 +20x^2+ nx-36 when divided by (x+1) gives remainder 0 and when divided by (x-2) gives re
soldi70 [24.7K]

Given:

The given polynomial is

mx^3+20x^2+nx-36

When it divided by (x+1) gives remainder 0 and when divided by (x-2) gives remainder of 45.

To find:

The values of m and n.

Solution:

According to the remainder theorem, if a polynomial P(x) is divided by (x-c), then the remainder is P(c).

Let the given polynomial be P(x).

P(x)=mx^3+20x^2+nx-36

When it divided by (x+1) gives remainder 0. So, P(-1)=0.

P(-1)=m(-1)^3+20(-1)^2+n(-1)-36

0=-m+20-n-36

0=-m-n-16

m+n=-16                   ...(i)

When P(x) is divided by (x-2) gives remainder of 45. So, P(2)=0

m(2)^3+20(2)^2+n(2)-36=45

8m+80+2n-36=45

8m+2n+44=45

8m+2n=45-44

8m+2n=1                  ...(ii)

Multiply 2 on both sides of (i).

2m+2n=-32                   ...(iii)

Subtract (iii) from (ii).

6m=33

m=\dfrac{33}{6}

m=5.5

Putting m=5.5 in (i), we get

5.5+n=-16

n=-16-5.5

n=-21.5

Therefore, the values of m and n are 5.5 and -21.5 respectively.

7 0
3 years ago
If (x - 2)2 + 5(x - 2) = -6, which of the following could be the value of x - 2?
BaLLatris [955]

Answer: A. -1

Step-by-step explanation:

(x - 2)2 + 5(x - 2) = -6

2x-4 + 5x -10= -6

Combine like terms

7x-14=-6

Add 14 to both sides

7x=8

Divide

X= 8/7 or 1.14 (rounded)

1.14 - 2= -0.86 which can be rounded to -1

3 0
3 years ago
65/156 with the denominator 12
tatuchka [14]
65/156 = (13x5)(13x12) = 5/12
6 0
3 years ago
HELPPP.. ill give the heart and stuff
amm1812

Answer:

19) y = 3/2x + 1

20) y = x + 4

21) a: 4/5 b: y = 4/5x + 4 c: 16 feet d: 4

22) a: y + 1 = 4(x - 6)

8 0
3 years ago
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