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Allushta [10]
3 years ago
12

Simplify (8-2) a + 9b - (3+2) a + 10

Mathematics
1 answer:
andrey2020 [161]3 years ago
3 0

Answer:

a+9b+10

Step-by-step explanation:

use foil method

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I’m honestly done with math
rewona [7]

Answer:

15.

Step-by-step explanation:

8x - 10 = 110    (vertical angles are equal in measure).

8x - 10+ 10 = 110 + 10

8x = 120

x = 120 /8

x = 15.

3 0
3 years ago
A bin contains 25 light bulbs, 5 of which are in good condition and will function for at least 30 days, 10 of which are partiall
Ira Lisetskai [31]

Answer:

The probability that it will still be working after one week is \frac{1}{5}

Step-by-step explanation:

Given :

Total number of bulbs = 25

Number of bulbs which are good condition and will function for at least 30 days = 5

Number of bulbs which are partially defective and will fail in their second day of use = 10

Number of bulbs which are totally defective and will not light up = 10

To find : What is the probability that it will still be working after one week?

Solution :

First condition is a randomly chosen bulb initially lights,

i.e. Either it is in good condition and partially defective.

Second condition is it will still be working after one week,

i.e. Bulbs which are good condition and will function for at least 30 days

So, favorable outcome is 5

The probability that it will still be working after one week is given by,

\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}

\text{Probability}=\frac{5}{25}

\text{Probability}=\frac{1}{5}

5 0
3 years ago
Help pleasee , thank you so much in advance
Tanzania [10]
Pretty sure the answer would be 32. It’s basic subtraction I think.
3 0
3 years ago
Read 2 more answers
Write an expression that represents the sum of 7 and x. Please help :)<br><br><br>Thanks!
eduard

Answer:

the sum of 7 is 7

Step-by-step explanation:

8 0
3 years ago
The graph below shows a system of equations: Draw a line labeled y equals minus x plus 5 by joining the ordered pairs 0, 5 and 5
Montano1993 [528]

Answer:

The x-coordinate of the solution is x=3

Step-by-step explanation:

we have

y=-x+5 ------> equation A

y=x-1 ------> equation B

Solve the system of equations by substitution

Substitute equation B in equation A and solve for x

x-1=-x+5

x+x=5+1

2x=6

x=3

Find the value of y

y=x-1  ------> y=3-1=2

The solution of the system of equations is the point (3,2)

therefore

The x-coordinate of the solution is x=3

5 0
2 years ago
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