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Vadim26 [7]
3 years ago
9

Helpppppppppppppppppppppppppp

Mathematics
1 answer:
Firlakuza [10]3 years ago
6 0

Answer:

Option D.

Step-by-step explanation:

==>27

r = 3

9r

which means 9x3 = 27.

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Can I get help on each one and not just answers please
harina [27]

1. To get the decimal, you divide 8 by 7 and add that to the back of ten. One eighth is .125. .125*7= 0.875, so your answer is 10.875.

2. A fifth is .2, so your answer is 9.8.

3. One ninth is .11..., which that repeating forever, so 8/9 is .89. You round the last eighth up.

4. 11 goes into 24 twice. Subtract 22 to get 2. Add a decimal and a zero. 11 goes into 20 once. Subtract 11 to get 9. Add another zero. 11 goes into 90 8 times. Subtract 88 to get 2. So your answer is 9.2. Sorry, it's hard to do long division on Brainly haha.

5. 6/27 is equal to 3*2/3*9, which is equal to 2/9. 2/9s is .22...

6. I can't see this one.

7. 8.7/1.4 is basically your problem. Move over the decimals in both of them so that you have 87/14 so that you can actually divide. So put them in long division format, and add a zero so you have 140. 87 goes in once, and you subtract 87 from 140 to get 53. Add another zero. 87 goes into 530 six times. Subtract 522 to get 8. Round .16 to .2 Your answer is .2

8. I'll teach you a fun property. Dividing is the same as multiplying by the reciprocal of something - or the upsidedown version. So if you have .1/1, then you multiply .365 by 1/.1. When you divide by .1, you get 3.65.

9. Do the same thing here. .01/1 flipped is 1/.01. You get 4270.9.

10. Move the decimal over the left three times: .00247

11. Move the decimal over to the left three times: .00039

12. Can't read all of this one.

Hope I helped!

4 0
4 years ago
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit
coldgirl [10]
Changing the equation into slope form: y = mx + c, where m is the slope [gradient] and c is the y-intercept.

2x+3y=1470
3y = -2x+1470
y= - \frac{2}{3}x+ \frac{1470}{3}
y=- \frac{2}{3}x+490

The gradient is - \frac{2}{3} and y-intercept is at y=490

Graphing y=- \frac{2}{3}x+490 using slope-intercept method:
a) The slope is a negative slope. The line will go 'down hill'
b) The line must pass the point (0, 490)
c) The line will intercept the x-axis at y = 0
    0 = - \frac{2}{3}x+490
    \frac{2}{3}x = 490
    2x = 1470
    x = \frac{1470}{2}
    x = 735
    So, x-intercept is at (735, 0)

The graph of this function is shown below. The intercepts are labelled at:
y = 490
x = 735

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

Next month's profit equation

2x+3y=1593

Rewriting this into slope-equation form

3y = -2x+1593
y=- \frac{2}{3}+ \frac{1593}{3}
y= - \frac{2}{3}+531

The gradient, m, equals to - \frac{2}{3}
The y-intercept, c, equals to 531

The equation still has the same gradient with last month's profit equation but different y-intercept. 

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

A linear graph show points of (0, 300) and (450, 0)

We work out the slope: 
\frac{300-0}{0-450} = \frac{300}{-450}=- \frac{20}{30}  =- \frac{2}{3}


Y-intercept at x = 0, so it's at y = 300

Equation y = - \frac{2}{3}+300

6 0
3 years ago
How many goths of a bulletin board will each student decorate
sweet [91]

Answer:

by dividing the fraction with multipication

Step-by-step explanation:

solve the fraction using division and multipication

7 0
3 years ago
Why were roads important to the military expansion of the Roman Republic?
ankoles [38]

Answer:

#3

Step-by-step explanation:

Similar to the US highway system Rome realized if they wanted to control their territory they were going to need to be able to squash resistance that wasn't in the immediate area and move resources form place to place easily

3 0
3 years ago
Read 2 more answers
If we are given the value of α. How can we find the value of β?
Cloud [144]

Answer:

β = 140   - α

we know that the "missing" angle is 40° since 40 + 140 = 180

we also know that the total sum of angles in a triangle is 180

so  β = 180 - 40 - α

or β = 140   - α

Step-by-step explanation:

4 0
4 years ago
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