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trapecia [35]
4 years ago
5

HELP please ASAP!!!!!

Mathematics
1 answer:
Alja [10]4 years ago
3 0
Try the first one.....
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Solve for zzz.<br> 42=-7(z-3)
katen-ka-za [31]

Answer:

z=-3

Step-by-step explanation:

42 = -7z+21

-7z=21

z=-3

4 0
3 years ago
Read 2 more answers
PLS ANSWER THESE QUESTIONS. I WILL GIVE 20 POINTS AD BRAINLIEST.
erastova [34]

Answer:

1. 3x + 6

2. \frac{99}{14} or 7.071

3. -\frac{1}{2}

Step-by-step explanation:

1. 3 consecutive even integers

If the first is x, the 2nd is x+2, and the 3rd is x+4

x + (x+2) + (x+4)

= 3x + 6

2. The equation for circumference is

C=2\pi r

If the diameter is 1\frac{4}{5} = \frac{9}{5}

The the radius is half of that.

So the circumference is

\pi * \frac{9}{4} *\frac{1}{2} * 2\\= \pi * \frac{9}{4}\\=\frac{22}{7} * \frac{9}{4}\\= \frac{198}{28}\\ =\frac{99}{14} \\=7.071

3. To divide we multiply by the reciprocal.  So flip the fraction that we are dividing by.

\frac{1}{7} / -\frac{2}{7}\\ = \frac{1}{7} * -\frac{7}{2} \\= -\frac{1}{2}

4 0
4 years ago
Before polishing, a steel plate was 2.342 inches thick. After polishing, it was 2.087 inches thick. How much was removed in poli
myrzilka [38]

Thickness of the plate before polishing = 2.342
Thickness of the plate after polishing. = 2.087
How much was removed = 2.342- 2.087 = 0.255
Hence , the answer 0.255 which is option B

5 0
3 years ago
Read 2 more answers
How do I complete this 3x^3+4x^2
Iteru [2.4K]
3x<3+4x<2
3x-3<4x<-1
-3<x<-1
8 0
3 years ago
What is the y-intercept of the line?
kramer

Answer:

the y intercept would be 4 pr (0,4)

6 0
2 years ago
Read 2 more answers
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