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Karolina [17]
3 years ago
8

Use elimination method to solve the system of equations -x+y=7 and x+y=1

Mathematics
1 answer:
Sauron [17]3 years ago
8 0

Answer:

(x, y)= (-3, 4)

Step-by-step explanation:

eliminate the variable by adding the equations

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(1 point) In an experiment, a ball is drawn from an urn containing 8 orange balls and 12 yellow balls. If the ball is orange, th
klemol [59]

Answer:

a) 8

b) 12

Step-by-step explanation:

With orange: 2×2×2 = 8

With yellow: 2×2 = 4

Total = 8+4 = 12

3 0
3 years ago
Someone pls help im so close
Sliva [168]

Answer:  A) 126.6

<u>Step-by-step explanation:</u>

Since we know ∠B = 85° and ∠C = 53°, we can use the Triangle Sum Theorem (angles of a triangle = 180°) to calculate ∠A.

∠A + ∠B + ∠C = 180

∠A + 85 + 53 = 180

∠A + 138 = 180

∠A = 42

Now we have:

                       A = 42          B = 85       C = 53

                       a = 85          b = ???       c = ???

We have all of the information for ∠A and side a so we can use the Law of Sines to find b (AC).

\dfrac{\sin 42}{85}=\dfrac{\sin 85}{b}\\\\\\b(\sin 42)=85(\sin 85)\\\\\\b=\dfrac{85\sin 85}{\sin 42}\\\\\\b=\large\boxed{126.547}

4 0
3 years ago
6.338 rounded to the nearest thousand
ANTONII [103]

Answer:

6.338

this is the same because thousandths means 3 decimal places and it already has only 3 places, so it is already rounded to the thousandths. Rounded to hundredths place would be 6.34 and tenths would be 6.3.

8 0
3 years ago
Attendance at a museum more than tripled from Monday to Saturday. On Monday, 186 people went to the museum. How many people went
ira [324]

Answer:

The number of people who visited  museum on Saturday is 558.

Step-by-step explanation:

Number of people went to museum on Monday = 186

Also, the number of people triples on Saturday.

So, Number of people visited on Saturday  

= 3 x Number of people who visited museum on Monday

= 3 x 186 = 558

Hence, the number of people who visited on Saturday is 558.

7 0
3 years ago
If there are 24 blue blocks and six of them are red what percentage of the blocks are red
Tems11 [23]

Answer:

20 % are red

Step-by-step explanation:

I THINK this is what you mean:

24 blue + 6 red = 30 blocks total

6 red / 30 total = 6/30 = .2   = 20 %

4 0
2 years ago
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