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Zigmanuir [339]
4 years ago
13

Simplify 22 + 6(3) – 7 and 5x − 2y + 3z − 2x − y + 4z

Mathematics
1 answer:
sergey [27]4 years ago
6 0

22+6(3)-7=22+18-7=40-7=33


5x-2y+3z-2x-y+4z\qquad|\text{combine like terms}\\\\=(5x-2x)+(-2y-y)+(3z+4z)=3x-3y+7z

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What is 854,861 rounded to the nearest ten thousand?
Mademuasel [1]

Answer:

850,000

Step-by-step explanation:

The ten thousand place is the second digit to the left of the comma. In this case, the number is 5. When rounding, you look at the number to the right of it. If the number is five or greater, you round up. If the number is four or less, you round down. The number next to 5 is 4. So you round down to 850,000 instead of 860,000.

4 0
1 year ago
Both lines pass through the point (-3,-4). one has a slope of 4 and the other has a slope of -1/4
Alchen [17]
If the question is to find the slope-intercept form of both lines, here's the answer:
Both lines pass through the point (-3,-4), so we can use these coordinates in both equations. The slope-intercept form is represented by y=mx+b, with m the slope, b the intersection of the line with Y'Y for x=0, y and x the coordinates of a point.
Let's first apply all these for the first line, with a slope of 4.
y = mx + b
y=-3; x=-4; m=4. All we need to do is find b.
-3 = 4(-4) + b
-3 = -16 + b
b=13
So the equation of the first line is y= 4x + 13.

Now, we'll do the same thing but for the second line:
y=-3; x=-4; m=-1/4, and we need to find b.
-3 = (-1/4)(-4) + b
-3 = 1 + b
b= -4
So the equation of the second line is y=(-1/4)x - 4

Hope this Helps! :)
3 0
4 years ago
What number must multiply each side of the equation 25x=10 to produce the equivalent equation x = 25?
insens350 [35]

Answer:

Multiply both sides by \frac{5}{2}

Step-by-step explanation:

Given

\frac{2}{5}x = 10

Required

Get an equivalent of x = 25

To do this, we simply multiply through by \frac{5}{2}

\frac{5}{2} * \frac{2}{5}x = 10 * \frac{5}{2}

\frac{5*2}{2*5} x = 10 * \frac{5}{2}

\frac{10}{10} x = 10 * \frac{5}{2}

\frac{1}{1} x = 10 * \frac{5}{2}

x = 10 * \frac{5}{2}

x =\frac{10*5}{2}

x =\frac{50}{2}

x = 25

5 0
3 years ago
Need help on this question
Lilit [14]

That's a tricky one because x is a function of y but y isn't a function of x.  

(x, x²) is a perfectly good relation.

I'm not totally sure but I'd

Answer: B

D is the other answer that may be accepted but knowing teachers, I'd go with B.

8 0
3 years ago
Give Area of a circle of diameter of 120 meters
Valentin [98]

Answer:

Area=11,309.73

Step-by-step explanation:

area of a circle is πr^2 so half of the diameter is the radius so it's 60.

pi x 60^2= 11,309.73

3 0
3 years ago
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