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Morgarella [4.7K]
3 years ago
15

Rewrite in simplest terms 9v-8(10v-9)

Mathematics
2 answers:
Mars2501 [29]3 years ago
6 0

Answer:

-71v+72

Step-by-step explanation:

Hope this helps. Plz give brainliest.

cricket20 [7]3 years ago
3 0

Answer:

9v-8.(10v-9)

result:72-71v

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Find the value of x and y using matrix method. 2x – 5y = 7 -2x + 4y = - 6
juin [17]

9514 1404 393

Answer:

  (x, y) = (1, -1)

Step-by-step explanation:

The augmented matrix of coefficients for these equations is ...

  \left[\begin{array}{cc|c}2&-5&7\\-2&4&-6\end{array}\right]

The row-reduction function of your calculator can find the solution to the system of equations. The result of using that function is ...

  \left[\begin{array}{cc|c}1&0&1\\0&1&-1\end{array}\right]

This tells you the solution is (x, y) = (1, -1).

6 0
3 years ago
Possible
irina [24]

Answer:

  about 520,000

Step-by-step explanation:

Following directions, we evaluate the equation by putting the value where the variable is and doing the arithmetic.

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The value of x will be the number of days between May 26 and May 12. That value is ...

  x = 26 -12 = 14

Then the number of mosquitos is estimated to be ...

  y = 230,000(1.06^14) ≈  520,008

About 520,000 mosquitos will inhabit the city on May 26.

_____

<em>Additional comment</em>

Typically, an "estimate" is one or two significant figures. So, 520,000 is a reasonable estimate. 520,008 has more precsision than can be justified.

8 0
2 years ago
Solve -7/2=-28 please solve and show work
Assoli18 [71]

Step-by-step explanation:

-7/2 = -28

-7 = -28 × 2

-7 = -56

5 0
3 years ago
Kiran surveyed a random sample of students in her school district, and she found these statistics:
kkurt [141]
These statistics are impossible: all students who ride bike and use crossing guard ride a bike, so the proportion of students who ride a bike and use the crossing guard must be less than or equal to the proportion of students who ride a bike. This is not true in the given stats; 0.12 > 0.1
3 0
3 years ago
Read 2 more answers
Two cyclists start from 98 miles apart and begin racing toward each
kati45 [8]

The speed of one bicyclist was 14.5mph, speed of the other bicyclist was 17.5mph.

Let the speed of one bicyclist=x mph

Let the speed of the other bicyclist=(x+3) mph

Hence:

Speed of one bicyclist:

3x+3(x+3)+2=98

3x+3x+9+2=98

6x=87

Divide both side by 6x

x=87/6

x=14.5 mph

Speed of the other bicyclist:

x+3 mph

14.5 mph+3 mph

=17.5 mph

Inconclusion the speed of one bicyclist was 14.5mph, speed of the other bicyclist was 17.5mph.

Learn more here:

brainly.com/question/18839894

3 0
2 years ago
Read 2 more answers
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