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adelina 88 [10]
3 years ago
5

A system of equations is shown.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
5 0

Answer:

x=-9.5

Step-by-step explanation:

y=-2x+3

y=22

Substitute the value of y into the given equation

22=-2x+3

Substrate 3 from both sides

19=-2x

Divide both sides by-2

x=-9.5

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I think of a number, add 8 to it and the result is 14. Find the number​
Leya [2.2K]

Answer:

6

Step-by-step explanation:

The equation for this would be:

n+8=14, since we are adding 8 to a number and getting 14

To solve, isolate the variable n, by subtracting 8 from both sides

n+8=14

n+8-8=14-8

n=6

The number is 6

3 0
3 years ago
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Which fractions equal the whole number 4?
Scorpion4ik [409]

Answer:

A, B

Step-by-step explanation:

A. 12/3=4

B. 4/1=4

C. 6/4=1 1/2

D. 4/6=2/3

5 0
3 years ago
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Please help i've been stuck on these for a bit now!
lisov135 [29]

Answer:

Q6. D

Q8. A

Step-by-step explanation:

Q6. In 40 trials, he flipped '2 heads and 1 tail' 16 times.

For 2 heads, probability= 16/40= 4/10

For 120 trials, number of times= 4/10 × 120= 48

Q8.

125x + 200 \geqslant 1200 \\ 125x \geqslant 1200 - 200 \\ 125x \geqslant 1000 \\ x \geqslant 1000 \div 125 \\ x \geqslant 8

Answer is A because the inequality shows that x is equal or greater than 8 so the dot at 8 has to be coloured.

Note that we do not change the inequality sign unless we are dividing the whole thing by -1.

5 0
3 years ago
Find the percent of increase from 1.5 inches to 6 inches.
jeyben [28]
Since 6/1.5 is 4. It increased 400%.
7 0
3 years ago
Tyler went to the supermarket to buy food for a food pantry. He has $36, and can carry up to 20 pounds of food in his backpack.
horrorfan [7]

Answer:

  • solutions: (2, 10), (4, 5)
  • non-solutions: all other points

Step-by-step explanation:

It can be useful to graph the inequalities related to Tyler's limits of money and weight.

  1x +3y ≤ 36 . . . . . . the limit on the cost of the items Tyler can afford

  1x +1.5y ≤ 20 . . . . . the limit on the weight of the items Tyler can carry

Then plotting the given points shows that only (2, 10) and (4, 5) are in the doubly-shaded area that is the solution space. The other points are not a solution.

6 0
3 years ago
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